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Load and Energy Estimates:
Mechanical Technical Report 2B Lehigh Valley Heritage Center
October 29, 2003
Jarod F. Stanton
Mechanical Option Primary Faculty Consultant: Prof. Srebric
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Jarod F. Stanton Lehigh Valley heritage center Mechanical Emphasis Allentown, PA October 29, 2003 Primary Faculty consultant: Prof.
Srebric
Executive Summary . The contents of this report are building load and energy estimates as well as an estimate of the annual energy consumption and operating cost of the Lehigh Valley Heritage Center. The calculations were evaluated by both simple “hand calculations” and by a computer-based method using Carriers Hourly Analysis Program 4.10. The calculations are being used to determine whether the design conditions will satisfy the loadings directed on and located within the building. The “hand calculations” were performed on Excel, using basic calculations to determine the electrical, occupant, fenestration/envelope, and outdoor air loadings. Fundamental knowledge of heat transfer and approximations were used in the determination of the heat gain into the building. The Lehigh Valley Heritage Center is located in Allentown, Pennsylvania. The ASHRAE Handbook, 2001 Fundamentals, lists the design conditions for outdoor air temperatures of cities/towns located throughout the world. For Allentown, PA, the outdoor air temperature for design in the winter time is 5 Degrees F, (99.6% annual percentile) while the outdoor air temperature for design in the summer time is 90 Degrees F (0.4% annual percentile). The range of weather can greatly affect a buildings heat loss or gain by means of temperature gradients, convective winds and/or radiation effects through glass areas. Internal sources of heat are of high importance too, especially with the growing and expanding era of electronic devices and hardware. Specific rooms of the Heritage Center will house computers, networking lines, security devices, and a vast majority of lighting. The Heritage Center will also be a host to many visitors which contribute sensible and latent heat to be conditioned by the building system(s). Below is a summary of the calculated, designed and simulated data for the load analysis. Cooling ft2/ton: Total Supply Air cfm/ft2 Ventilation Supply cfm/ft2
Calculated 915.38 0.809 0.359 Designed 290.5 1.053 0.274
Simulated 207.52 1.42 1.44 An annual energy consumption was computed using user written equations and by Carriers analysis program. Because the building is not yet constructed, there is no utility bill or energy consumption summary. Through online resources, the monetary values of utilities from PP&L Co. were roughly estimated to be $6.28/Dekatherm for natural gas and $0.0775/kWhr for electricity. The electric rate was given via phone conversation on Monday October 29, 2003, by a commercial representative of PP&L Co. for a mid. size, secondary service, GS3 rate building. No demand charges were given, nor inflation or tax rates. An assumed tax rate of 5% was used in the Carrier program. No energy analysis was performed by the mechanical engineer during the design phase. The building was confirmed to adhere to PA Labor and Industry Act 222, which is a predecessor of Standard 90.1-1999. Building load calculations were performed using Elite’s CHVAC program, although. The simulated vs. designed cost is: $33,148 vs. $51,729, with a price per sq.ft of: $1.36 vs. $1.86. Clearly the simulation data is more accurate because it accounts for solar loads, below grade walls, duct leakage, pipe leakage and efficiency.
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Jarod F. Stanton Lehigh Valley heritage center Mechanical Emphasis Allentown, PA October 29, 2003 Primary Faculty consultant: Prof.
Srebric
Design Load Estimate
Lighting Load estimates were performed using an Excel spreadsheet with basic psychometric and heat transfer
equations. First, the spaces were put into the spreadsheet along with their corresponding square footage, which was retrievable from the first technical assignment. Each room contained a designed amount of light represented in Watts, which was taken from technical assignment 2a, and placed in the corresponding spreadsheet. Task lighting was only given in special spaces, such as the offices, reading room and the work stations. These rooms will have lamps for individuals to use on their desks to better illuminate their workspace since it is at a more isolated spot in the room(s).
Equipment Next was the determination of equipment in the spaces. Equipment in this case does not represent the mechanical equipment of the building but instead copiers, computers, printers, coffee machines, facsimile machines, etc. According to ASHRAE Fundamentals 2001, there are several basic W/ft2 estimates one can use for the different types of equipment in the space ranging from 0.5 to 2.0. In the typical office spaces on the second floor, a value of 1.5 W/ft2 was used. In other spaces, such as the reading room, processing room and school program, a value of 1.0 W/ft2 . And in some extreme cases such as the copy room, typical values for large scale copiers were used to estimate the equipment load. The values for the copy equipment also came from ASHRAE Fundamentals 2001, which were just estimations of the pieces of equipment contained in those rooms. After the lighting and equipment loads were computed, the resulting loads were added together for each space and converted to units of energy, Btu/hr. This step now makes finding the volumetric flow rate of supply air much easier as the estimate process continues on.
Occupancy The occupancy for each space was determined from the design plans, as well as the first technical assignment. It was assumed that the people were in a relaxed pose, not doing any significant physical work, which would increase their metabolic rate. The typical design factors for sensible loss heat and latent loss heat are 245 Btu/hr person and 205 Btu/hr person respectively, given in the ASHRAE Fundamentals 2001. The full load occupancy was used in order to account for the worst possible situation regarding heat pickup. Although the latent heat is included in the spreadsheet it should be noted that it is not included in the calculation for volumetric flow rate of supply air.
Fenestration and Building Envelope Typical walls and windows were chosen to make the estimation of the building load as simple as possible. The values are very similar to the values specified in technical assignment 2a. Each space was evaluated to determine wall and window area that would allow heat gain and loss. A typical wall U value is 0.047 Btu/hr F ft2 while a typical glass U value is 0.452 Btu/hr F ft2 . The wall values were estimated using the Carrier HAP program. The general formula used for calculating the heat transfer through the wall is:
Q=UA (Tout-Tin) {Btu/hr}
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Jarod F. Stanton Lehigh Valley heritage center Mechanical Emphasis Allentown, PA October 29, 2003 Primary Faculty consultant: Prof.
Srebric which is positive for heat gain and negative for heat loss. This equation was also used for the glass and roof areas. Please note that only the height of the wall extending from the floor to the suspended ceiling were used in the calculations for the wall areas while the entire second floor was calculated as having a heat gain/loss from the ceiling.
Supply Air Calculation and Ventilation rate After the lighting, equipment, occupant and fenestration calculations have been processed; they are all added up (Btu/hr) and placed in the given equation below to calculate the supply air in scfm:
Q=1.8*scfm*(Tout-Tin) where scfm=Q/ (1.8*(Tout-Tin)) This is the amount of air being brought in at temperature Tin that will condition the space according to the amount of energy being emitted. The ventilation rate was difficult to determine since the ventilation cfm were not marked on the plans. As a general rule of thumb, a value of 20 cfm/person was used to determine the minimum ventilation rate for the spaces.
Design Air Conditions According to the ASHRAE Fundamentals 2001, a building located in Allentown, Pennsylvania will have a heating dry bulb of 5 degrees F for an outdoor air design temperature (99.6 annual percentile) and a cooling dry bulb of 90 degrees F for an outdoor air design temperature (0.4 annual percentile). The cooling dry bulb temperature was used as the outdoor air temperature, while a dry bulb temperature of 75 degrees F was used for the indoor air design temperature. This basis was used on all calculations involving temperatures and temperature differences.
Comparison of Calculated, Designed and Simulated Data
Simulated Data can be found in Appendix A while calculated data is the link Load Calculation Spreadsheet (due to size). The following table will compare/contrast the different values given for the building load conditions. Cooling ft2/ton: Total Supply Air cfm/ft2 Ventilation Supply cfm/ft2
Calculated 915.38 0.809 0.359 Designed 290.5 1.053 0.274
Simulated 207.52 1.42 1.44 There is some discrepancy on the square footage being evaluated. The simulation data does not account for all space in its calculation. It tends to leave out about 6000 square foot of space, while my hand calculations leave out about 4000 square foot. These discrepancies are caused by program/human error. Wall thicknesses can also leave out a considerable amount of space if they are not accounted for properly. Other factors that cause fallacious values are the fact that the hand calculations do not account for the solar angle, wind speed or even a ballast factor for the lights in energy production. The importance of the solar gain is crucial because it is a large contributor of envelope loads. The values for the Total Supply Air seem to be the most accurate of all three
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Jarod F. Stanton Lehigh Valley heritage center Mechanical Emphasis Allentown, PA October 29, 2003 Primary Faculty consultant: Prof.
Srebric methods of calculation. The Cooling column is mostly off because of an error or the fact that no-one has ever been in it just yet. The Ventilation Supply is slightly off because of user input and the fact that the simulation data is always putting out 100 percent outdoor air.
Annual Energy Estimate Starting the annual energy estimate contains the first steps of the design load portion. A spreadsheet was set up according to the weather data retrieved from Bin Maker Plus. The weather data contained dry bulb temperatures, hours those temperatures were met, humidity ratios and enthalpies for specific times during the months of the year. First the humidity ratio at the given temperatures is calculated using the equation:
RH= (i-(0.24*t)/(1061.2+0.444*t))*7000 {lbmv/lbma}
Where i = enthalpy Btu/lbm t = temperature F
Outdoor Air Load
The second step is to figure out the outdoor air load, both sensible and latent. This is accomplished by these two equations:
Qsensible =1.08*scfm*(Tout-Tin) {Btu/hr}
Qlatent =0.68*scfm*(Wout-Win) {Btu/hr}
Where W: humidity ratio
Occupancy Load After calculating the outdoor air loads, calculate the occupancy load using the same basis as above in the
design estimate with 245 Btu/hr*person sensible and 205 Btu/hr*person latent. Multiply these terms by the number of people to get a total Btu/hr. After determining the latent load of the people, add it to the latent load of the outdoor air. If the answer is negative then the outdoor air cannot do any latent conditioning and a zero should be put in place of the negative number.
Qlatent total = Qlatent people + Qlatent outdoor Qlatent total >= 0
Lighting and Equipment Load
This process follows the exact same process as the design estimate, except at the end it needs to be multiplied by the number of hours at that temperature to convert it into kWhr.
Overall Building Load
This process follows the same steps as the design estimate. The equation is as follows:
Q = UA (Tout-Tin) {Btu/hr}
Where Tout is the Bin temperature
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Jarod F. Stanton Lehigh Valley heritage center Mechanical Emphasis Allentown, PA October 29, 2003 Primary Faculty consultant: Prof.
Srebric
Equipment containing fans and pumps Equipment containing fans as well as pumps connected to the chilled water system must be converted
into a heat source. For the fans contained in the air handling and roof top units, the horsepower of the motors that drives the fans was given, therefore a simple conversion factor of 0.746 multiplied to the horsepower converted it to kW. After converting it, multiply it by the number of hours that that temperature occurred so that the final units are kWhr. The pumps were converted in the same fashion since their horsepower was also known as well as the hours of the temperature occurrence.
Chiller The chiller is selected by adding up all the loads calculated except for the pump loads. One must be
careful to convert all units of load to a similar unit in order to add the values. Once the chiller has been sized, one can proceed with solving for the total load. IMPORTANT: the chiller cannot have a negative value, if it does, the value assigned to it is zero. If the chiller shows a negative value, it means it is not running and will be shut off, even though the pumps might circulate the water for freeze protection.
Previous Energy Analysis
There was no previous energy analysis on this building, according to the engineer, Matthew Lesoine. Mr. Lesoine explained that the building was confirmed to adhere to PA Labor and Industry Act 222, which is a predecessor of Standard 90.1-1999. Building load calculations were performed using Elite’s CHVAC program, although.
Utility Rates Utility rates for the Heritage Center were estimated from rates on-line and from a conversation with a PP&L Co. employee. A basic price for natural gas was found to be $6.23 per Dekatherm from PP&L Co. A basic rate for electric for a mid size, secondary service, GS3 rate building is $0.0775 per kWhr. This value of electricity pricing was given by an employee of PP&L Co.
Schedules
Two basic schedules were used in the program. One was based on the time of the day and the percentage of occupants in the space during the week. That schedule was modified so that no one was in over the weekends or from 8pm-6am during the week. The other schedule was a thermostat schedule based on occupancy (either occupied or unoccupied). This schedule follows the same time frame and occupancy as the first schedule, no one in during the weekends or from 8pm-6am during the week.
RTU's Fans HP kW 10 7.458968 7.5 5.594226
13.05319
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Jarod F. Stanton Lehigh VAlley heritage center Mechanical Emphasis Allentown, PA October 29, 2003 Primary Faculty consultant: Prof.
Srebric
Annual Costs From Calculations: Cooling Cost/yr: $51,729 $1.86/sq.ft
Heating Cost/yr: $111 $0.004/sq.ft Fan Cost/yr: $8,289 $0.30/sq.ft Pump Cost/yr: $3,806 $0.14/sq.ft Lights and Equipment Cost/yr: $17,279 $0.62/sq.ft From Simulation Data: Component LCHC
($) Air System Fans 4,694
Cooling 2,838
Heating 202
Pumps 1,393
Cooling Tower Fans 0
HVAC Sub-Total 9,127
Lights 14,157
Electric Equipment 4,198
Misc. Electric 4,520
Misc. Fuel Use 1,147
Non-HVAC Sub-Total 24,021
Grand Total 33,148
From Design: NO INFORMATION GIVEN OR OBTAINED AS OF 10/29/03.
Component LCHC ($/ft²)
Air System Fans 0.193
Cooling 0.117
Heating 0.008
Pumps 0.057
Cooling Tower Fans 0.000
HVAC Sub-Total 0.376
Lights 0.583
Electric Equipment 0.173
Misc. Electric 0.186
Misc. Fuel Use 0.047
Non-HVAC Sub-Total 0.990
Grand Total 1.366
Gross Floor Area (ft²) 24270.0
Conditioned Floor Area (ft²) 24270.0
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Jarod F. Stanton Lehigh Valley heritage center Mechanical Emphasis Allentown, PA October 29, 2003 Primary Faculty consultant: Prof.
Srebric
Conclusion Based on the results of this paper, a simulated building can prove to be a great benefit when asked about systems, utilities and loads on buildings. It is more accurate than doing it by hand and much faster. The only drawback is human mistake, which can affect anything at anytime. The simulation data accounts for solar angles, below ground wall structures, and most equipment. Although not all systems can be accurately simulated, it proves to be a time saver and provides general ballpark figures. I would be more comfortable with reading the simulation data rather than the hand calculations.
The simulation data seems fairly reasonable based on the assumptions of the data being placed in the computer program. Although the utility information was not 100% accurate, the program still responded to the inputs. The average value of $1.37/sq.ft seems a little low, but then most of the building is storage anyway, plus the fact that my schedules are telling the program that no one is occupying the building at certain hours.
Also, the simulation data provides the closest estimate to the design of the building, which is a
reassuring factor that the building loads were accounted for and that any mistakes between the programs used are either similar or negligible. As the building progresses more towards bidding and construction, it will be easier to talk to representatives, workers and owners about utility pricing and similar buildings that would share a similar utility usage. Following up on this idea is important to future evaluations of this building, considering a re-design as well.
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Jarod F. Stanton Lehigh Valley heritage center Mechanical Emphasis Allentown, PA October 29, 2003 Primary Faculty consultant: Prof.
Srebric
Appendix A Contents:
Simulation Design Output Simulation Energy Output
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Air System Information Air System Name .................... Air Handling Unit One Equipment Class ........................................... CW AHU Air System Type .................................................... VAV
Number of zones ............................................................ 5 Floor Area .............................................................. 9140.0 ft²
Sizing Calculation Information Zone and Space Sizing Method:
Zone CFM ........................... Peak zone sensible load Space CFM ................... Individual peak space loads
Calculation Months ......................................... Jan to Dec Sizing Data ..................................................... Calculated
Central Cooling Coil Sizing Data
Total coil load ........................................................ 29.3 Tons Total coil load ...................................................... 352.1 MBH Sensible coil load ................................................ 237.6 MBH Coil CFM at Jul 1500 ............................................ 7614 CFM Max block CFM at Jul 1700 ................................ 11993 CFM Sum of peak zone CFM ..................................... 12122 CFM Sensible heat ratio .............................................. 0.675 ft²/Ton .................................................................. 311.5 BTU/(hr-ft²) ............................................................ 38.5 Water flow @ 10.0 °F rise ................................... 70.46 gpm
Load occurs at .................................................... Jul 1500 OA DB / WB ..................................................... 90.0 / 73.0 °F Entering DB / WB ............................................ 90.0 / 73.0 °F Leaving DB / WB ............................................. 60.7 / 59.2 °F Coil ADP .................................................................... 57.4 °F Bypass Factor .......................................................... 0.100 Resulting RH ................................................................ 57 % Design supply temp. .................................................. 55.0 °F Zone T-stat Check .................................................. 5 of 5 OK Max zone temperature deviation ................................. 0.0 °F
Humidifier Sizing Data
Max steam flow at Jan 1900 ............................... 16.91 lb/hr Airflow Rate .......................................................... 3326 CFM
Air mass flow ..................................................... 14759.28 lb/hr Moisture gain ......................................................... .00115 lb/lb
Supply Fan Sizing Data
Actual max CFM at Jul 1700 .............................. 11993 CFM Standard CFM .................................................... 11828 CFM Actual max CFM/ft² ............................................... 1.31 CFM/ft²
Fan motor BHP ........................................................ 11.80 BHP Fan motor kW ............................................................ 8.80 kW
Outdoor Ventilation Air Data Design airflow CFM ............................................ 11993 CFM CFM/ft² .................................................................. 1.31 CFM/ft²
CFM/person ............................................................. 99.94 CFM/person
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DESIGN COOLING DESIGN HEATING COOLING DATA AT Jul 1500 HEATING DATA AT DES HTG COOLING OA DB / WB 90.0 °F / 73.0 °F HEATING OA DB / WB 5.0 °F / 3.1 °F Sensible Latent Sensible LatentZONE LOADS Details (BTU/hr) (BTU/hr) Details (BTU/hr) (BTU/hr)Window & Skylight Solar Loads 207 ft² 4661 - 207 ft² - -Wall Transmission 2258 ft² 2508 - 2258 ft² 16829 -Roof Transmission 0 ft² 0 - 0 ft² 0 -Window Transmission 207 ft² 1102 - 207 ft² 6216 -Skylight Transmission 0 ft² 0 - 0 ft² 0 -Door Loads 0 ft² 0 - 0 ft² 0 -Floor Transmission 6920 ft² 0 - 6920 ft² 2465 -Partitions 0 ft² 0 - 0 ft² 0 -Ceiling 0 ft² 0 - 0 ft² 0 -Overhead Lighting 15725 W 45622 - 0 0 -Task Lighting 960 W 3003 - 0 0 -Electric Equipment 4195 W 13358 - 0 0 -People 120 23903 24600 0 0 0Infiltration - 0 0 - 0 0Miscellaneous - 0 0 - 0 0Safety Factor 0% / 0% 0 0 0% 0 0>> Total Zone Loads - 94158 24600 - 25511 0Zone Conditioning - 108015 24600 - -11348 0Plenum Wall Load 0% 0 - 0 0 -Plenum Roof Load 0% 0 - 0 0 -Plenum Lighting Load 0% 0 - 0 0 -Return Fan Load 7614 CFM 0 - 2400 CFM 0 -Ventilation Load 7614 CFM 110243 89852 2400 CFM 85113 8306Supply Fan Load 7614 CFM 19361 - 2400 CFM -9910 -Space Fan Coil Fans - 0 - - 0 -Duct Heat Gain / Loss 0% 0 - 0% 0 ->> Total System Loads - 237619 114452 - 63854 8306Central Cooling Coil - 237619 114452 - 0 0Humidification Load - - 0 - - 8306Terminal Reheat Coils - 0 - - 63854 ->> Total Conditioning - 237619 114452 - 63854 8306Key: Positive values are clg loads Positive values are htg loads Negative values are htg loads Negative values are clg loads
Air System Information Air System Name ................. Air Handling Unit Three Equipment Class ........................................... CW AHU Air System Type .................................................... VAV
Number of zones ............................................................ 2 Floor Area .............................................................. 2640.0 ft²
Sizing Calculation Information Zone and Space Sizing Method:
Zone CFM ........................... Peak zone sensible load Space CFM ................... Individual peak space loads
Calculation Months ......................................... Jan to Dec Sizing Data ..................................................... Calculated
Central Cooling Coil Sizing Data
Total coil load ........................................................ 12.3 Tons Total coil load ...................................................... 147.3 MBH Sensible coil load .................................................. 91.8 MBH Coil CFM at Aug 1500 .......................................... 2596 CFM Max block CFM at Oct 1100 ................................. 3055 CFM Sum of peak zone CFM ....................................... 3146 CFM Sensible heat ratio .............................................. 0.623 ft²/Ton .................................................................. 215.1 BTU/(hr-ft²) ............................................................ 55.8 Water flow @ 10.0 °F rise ................................... 29.48 gpm
Load occurs at .................................................. Aug 1500 OA DB / WB ..................................................... 90.0 / 73.0 °F Entering DB / WB ............................................ 90.0 / 73.0 °F Leaving DB / WB ............................................. 56.8 / 55.5 °F Coil ADP .................................................................... 53.1 °F Bypass Factor .......................................................... 0.100 Resulting RH ................................................................ 51 % Design supply temp. .................................................. 55.0 °F Zone T-stat Check .................................................. 2 of 2 OK Max zone temperature deviation ................................. 0.0 °F
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Supply Fan Sizing Data
Actual max CFM at Oct 1100 ............................... 3055 CFM Standard CFM ...................................................... 3013 CFM Actual max CFM/ft² ............................................... 1.16 CFM/ft²
Fan motor BHP .......................................................... 3.30 BHP Fan motor kW ............................................................ 2.46 kW
Outdoor Ventilation Air Data Design airflow CFM .............................................. 3055 CFM CFM/ft² .................................................................. 1.16 CFM/ft²
CFM/person ............................................................. 49.27 CFM/person
DESIGN COOLING DESIGN HEATING COOLING DATA AT Aug 1500 HEATING DATA AT DES HTG COOLING OA DB / WB 90.0 °F / 73.0 °F HEATING OA DB / WB 5.0 °F / 3.1 °F Sensible Latent Sensible LatentZONE LOADS Details (BTU/hr) (BTU/hr) Details (BTU/hr) (BTU/hr)Window & Skylight Solar Loads 75 ft² 1396 - 75 ft² - -Wall Transmission 373 ft² 289 - 373 ft² 1237 -Roof Transmission 0 ft² 0 - 0 ft² 0 -Window Transmission 75 ft² 399 - 75 ft² 2252 -Skylight Transmission 0 ft² 0 - 0 ft² 0 -Door Loads 0 ft² 0 - 0 ft² 0 -Floor Transmission 0 ft² 0 - 0 ft² 0 -Partitions 0 ft² 0 - 0 ft² 0 -Ceiling 0 ft² 0 - 0 ft² 0 -Overhead Lighting 7656 W 22213 - 0 0 -Task Lighting 0 W 0 - 0 0 -Electric Equipment 1645 W 5238 - 0 0 -People 62 12350 12710 0 0 0Infiltration - 0 0 - 0 0Miscellaneous - 0 0 - 0 0Safety Factor 0% / 0% 0 0 0% 0 0>> Total Zone Loads - 41885 12710 - 3489 0Zone Conditioning - 48462 12710 - -8872 0Plenum Wall Load 0% 0 - 0 0 -Plenum Roof Load 0% 0 - 0 0 -Plenum Lighting Load 0% 0 - 0 0 -Return Fan Load 2596 CFM 0 - 1240 CFM 0 -Ventilation Load 2596 CFM 36131 42796 1240 CFM 36071 0Supply Fan Load 2596 CFM 7197 - 1240 CFM -3900 -Space Fan Coil Fans - 0 - - 0 -Duct Heat Gain / Loss 0% 0 - 0% 0 ->> Total System Loads - 91789 55506 - 23300 0Central Cooling Coil - 91789 55506 - 0 0Terminal Reheat Coils - 0 - - 23300 ->> Total Conditioning - 91789 55506 - 23300 0Key: Positive values are clg loads Positive values are htg loads Negative values are htg loads Negative values are clg loads
Air System Information Air System Name .................... Air Handling Unit Two Equipment Class ........................................... CW AHU Air System Type .................................................... VAV
Number of zones ............................................................ 2 Floor Area .............................................................. 3470.0 ft²
Sizing Calculation Information Zone and Space Sizing Method:
Zone CFM ........................... Peak zone sensible load Space CFM ................... Individual peak space loads
Calculation Months ......................................... Jan to Dec Sizing Data ..................................................... Calculated
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Central Cooling Coil Sizing Data
Total coil load ........................................................ 11.4 Tons Total coil load ...................................................... 137.2 MBH Sensible coil load .................................................. 95.3 MBH Coil CFM at Jul 1500 ............................................ 3164 CFM Max block CFM at Jan 0000 ................................ 4214 CFM Sum of peak zone CFM ....................................... 4214 CFM Sensible heat ratio .............................................. 0.695 ft²/Ton .................................................................. 303.5 BTU/(hr-ft²) ............................................................ 39.5 Water flow @ 10.0 °F rise ................................... 27.46 gpm
Load occurs at .................................................... Jul 1500 OA DB / WB ..................................................... 90.0 / 73.0 °F Entering DB / WB ............................................ 90.0 / 73.0 °F Leaving DB / WB ............................................. 61.7 / 60.2 °F Coil ADP .................................................................... 58.6 °F Bypass Factor .......................................................... 0.100 Resulting RH ................................................................ 63 % Design supply temp. .................................................. 55.0 °F Zone T-stat Check .................................................. 2 of 2 OK Max zone temperature deviation ................................. 0.0 °F
Humidifier Sizing Data
Max steam flow at Jan 0900 ................................. 6.53 lb/hr Airflow Rate .......................................................... 2140 CFM
Air mass flow ....................................................... 9497.12 lb/hr Moisture gain ......................................................... .00069 lb/lb
Supply Fan Sizing Data
Actual max CFM at Jan 0000 ............................... 4214 CFM Standard CFM ...................................................... 4156 CFM Actual max CFM/ft² ............................................... 1.21 CFM/ft²
Fan motor BHP .......................................................... 4.60 BHP Fan motor kW ............................................................ 3.43 kW
Outdoor Ventilation Air Data Design airflow CFM .............................................. 4214 CFM CFM/ft² .................................................................. 1.21 CFM/ft²
CFM/person ............................................................. 39.38 CFM/person
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DESIGN COOLING DESIGN HEATING COOLING DATA AT Jul 1500 HEATING DATA AT DES HTG COOLING OA DB / WB 90.0 °F / 73.0 °F HEATING OA DB / WB 5.0 °F / 3.1 °F Sensible Latent Sensible LatentZONE LOADS Details (BTU/hr) (BTU/hr) Details (BTU/hr) (BTU/hr)Window & Skylight Solar Loads 0 ft² 0 - 0 ft² - -Wall Transmission 2088 ft² 1491 - 2088 ft² 6922 -Roof Transmission 3470 ft² 5114 - 3470 ft² 6253 -Window Transmission 0 ft² 0 - 0 ft² 0 -Skylight Transmission 0 ft² 0 - 0 ft² 0 -Door Loads 0 ft² 0 - 0 ft² 0 -Floor Transmission 0 ft² 0 - 0 ft² 0 -Partitions 0 ft² 0 - 0 ft² 0 -Ceiling 0 ft² 0 - 0 ft² 0 -Overhead Lighting 713 W 2176 - 0 0 -Task Lighting 0 W 0 - 0 0 -Electric Equipment 1735 W 5525 - 0 0 -People 107 21314 21935 0 0 0Infiltration - 0 0 - 0 0Miscellaneous - 0 0 - 0 0Safety Factor 0% / 0% 0 0 0% 0 0>> Total Zone Loads - 35619 21935 - 13174 0Zone Conditioning - 40270 21935 - -3576 0Plenum Wall Load 0% 0 - 0 0 -Plenum Roof Load 0% 0 - 0 0 -Plenum Lighting Load 0% 0 - 0 0 -Return Fan Load 3164 CFM 0 - 2140 CFM 0 -Ventilation Load 3164 CFM 46163 19925 2140 CFM 57271 6726Supply Fan Load 3164 CFM 8906 - 2140 CFM -6331 -Space Fan Coil Fans - 0 - - 0 -Duct Heat Gain / Loss 0% 0 - 0% 0 ->> Total System Loads - 95338 41860 - 47364 6726Central Cooling Coil - 95338 41860 - 0 0Humidification Load - - 0 - - 6726Terminal Reheat Coils - 0 - - 47364 ->> Total Conditioning - 95338 41860 - 47364 6726Key: Positive values are clg loads Positive values are htg loads Negative values are htg loads Negative values are clg loads
Air System Information Air System Name ................................... Fan Coil Unit Equipment Class ................................................ TERM Air System Type ............................................. PKG-FC
Number of zones ............................................................ 1 Floor Area ................................................................ 800.0 ft²
Sizing Calculation Information Zone and Space Sizing Method:
Zone CFM ....................... Sum of space airflow rates Space CFM ................... Individual peak space loads
Calculation Months ......................................... Jan to Dec Sizing Data ..................................................... Calculated
Air System Information Air System Name ................................... Fan Coil Unit Equipment Class ................................................ TERM Air System Type ............................................. PKG-FC
Number of zones ............................................................ 1 Floor Area ................................................................ 800.0 ft²
Sizing Calculation Information Zone and Space Sizing Method:
Zone CFM ....................... Sum of space airflow rates Space CFM ................... Individual peak space loads
Calculation Months ......................................... Jan to Dec Sizing Data ..................................................... Calculated
14
DESIGN COOLING DESIGN HEATING COOLING DATA AT Aug 1200 HEATING DATA AT DES HTG COOLING OA DB / WB 85.5 °F / 71.8 °F HEATING OA DB / WB 5.0 °F / 3.1 °F Sensible Latent Sensible LatentZONE LOADS Details (BTU/hr) (BTU/hr) Details (BTU/hr) (BTU/hr)Window & Skylight Solar Loads 37 ft² 1837 - 37 ft² - -Wall Transmission 1570 ft² 1083 - 1570 ft² 5205 -Roof Transmission 0 ft² 0 - 0 ft² 0 -Window Transmission 37 ft² 134 - 37 ft² 1111 -Skylight Transmission 0 ft² 0 - 0 ft² 0 -Door Loads 0 ft² 0 - 0 ft² 0 -Floor Transmission 685 ft² 0 - 685 ft² 849 -Partitions 0 ft² 0 - 0 ft² 0 -Ceiling 0 ft² 0 - 0 ft² 0 -Overhead Lighting 799 W 2349 - 0 0 -Task Lighting 0 W 0 - 0 0 -Electric Equipment 685 W 2146 - 0 0 -People 2 378 410 0 0 0Infiltration - 0 0 - 0 0Miscellaneous - 0 0 - 0 0Safety Factor 0% / 0% 0 0 0% 0 0>> Total Zone Loads - 7927 410 - 7164 0Zone Conditioning - 9106 410 - 6980 0Plenum Wall Load 0% 0 - 0 0 -Plenum Roof Load 0% 0 - 0 0 -Plenum Lighting Load 0% 0 - 0 0 -Return Fan Load 0 CFM 0 - 0 CFM 0 -Ventilation Load 40 CFM 338 620 40 CFM 2725 0Supply Fan Load 0 CFM 0 - 0 CFM 0 -Space Fan Coil Fans - 57 - - -57 -Duct Heat Gain / Loss 0% 0 - 0% 0 ->> Total System Loads - 9502 1030 - 9647 0Terminal Unit Cooling - 9502 1033 - 0 0Terminal Unit Heating - 0 - - 9647 ->> Total Conditioning - 9502 1033 - 9647 0Key: Positive values are clg loads Positive values are htg loads Negative values are htg loads Negative values are clg loads
Air System Information Air System Name ......................... Roof Top Unit One Equipment Class ....................................... PKG ROOF Air System Type .................................................... VAV
Number of zones ............................................................ 3 Floor Area .............................................................. 3725.0 ft²
Sizing Calculation Information Zone and Space Sizing Method:
Zone CFM ........................... Peak zone sensible load Space CFM ................... Individual peak space loads
Calculation Months ......................................... Jan to Dec Sizing Data ..................................................... Calculated
Central Cooling Coil Sizing Data
Total coil load ........................................................ 39.4 Tons Total coil load ...................................................... 472.9 MBH Sensible coil load ................................................ 288.2 MBH Coil CFM at Jul 1500 ............................................ 7768 CFM Max block CFM at Jun 1600 ................................ 8280 CFM Sum of peak zone CFM ....................................... 8529 CFM Sensible heat ratio .............................................. 0.609
ft²/Ton .................................................................... 94.5 BTU/(hr-ft²) .......................................................... 127.0 Water flow @ 10.0 °F rise ....................................... N/A
15
Load occurs at .................................................... Jul 1500 OA DB / WB .................................................... 90.0 / 73.0 °F Entering DB / WB ............................................ 90.0 / 73.0 °F Leaving DB / WB ............................................. 55.2 / 54.0 °F Coil ADP .................................................................... 51.3 °F
Bypass Factor .......................................................... 0.100 Resulting RH ................................................................ 48 % Design supply temp. .................................................. 55.0 °F Zone T-stat Check .................................................. 3 of 3 OK Max zone temperature deviation ................................. 0.0 °F
Supply Fan Sizing Data
Actual max CFM at Jun 1600 ............................... 8280 CFM Standard CFM ...................................................... 8166 CFM Actual max CFM/ft² ............................................... 2.22 CFM/ft²
Fan motor BHP ........................................................ 10.00 BHP Fan motor kW ............................................................ 7.46 kW
Outdoor Ventilation Air Data Design airflow CFM .............................................. 8280 CFM CFM/ft² .................................................................. 2.22 CFM/ft²
CFM/person ............................................................. 47.31 CFM/person
Air System Information Air System Name ......................... Roof Top Unit Two Equipment Class ....................................... PKG ROOF Air System Type .................................................... VAV
Number of zones ............................................................ 8 Floor Area .............................................................. 4495.0 ft²
Sizing Calculation Information Zone and Space Sizing Method:
Zone CFM ........................... Peak zone sensible load Space CFM ................... Individual peak space loads
Calculation Months ......................................... Jan to Dec Sizing Data ..................................................... Calculated
Central Cooling Coil Sizing Data
Total coil load ........................................................ 20.7 Tons Total coil load ...................................................... 248.8 MBH Sensible coil load ................................................ 156.6 MBH Coil CFM at Jul 1600 ............................................ 4636 CFM Max block CFM at Jul 1600 .................................. 6209 CFM Sum of peak zone CFM ....................................... 6532 CFM Sensible heat ratio .............................................. 0.629 ft²/Ton .................................................................. 216.8 BTU/(hr-ft²) ............................................................ 55.3 Water flow @ 10.0 °F rise ...................................... N/A
Load occurs at .................................................... Jul 1600 OA DB / WB ..................................................... 89.4 / 72.8 °F Entering DB / WB ............................................ 89.4 / 72.8 °F Leaving DB / WB ............................................. 57.7 / 56.4 °F Coil ADP .................................................................... 54.2 °F Bypass Factor .......................................................... 0.100 Resulting RH ................................................................ 49 % Design supply temp. .................................................. 55.0 °F Zone T-stat Check .................................................. 8 of 8 OK Max zone temperature deviation ................................. 0.0 °F
Supply Fan Sizing Data
Actual max CFM at Jul 1600 ................................ 6209 CFM Standard CFM ...................................................... 6123 CFM Actual max CFM/ft² ............................................... 1.38 CFM/ft²
Fan motor BHP .......................................................... 7.50 BHP Fan motor kW ............................................................ 5.59 kW
Outdoor Ventilation Air Data Design airflow CFM .............................................. 6209 CFM CFM/ft² .................................................................. 1.38 CFM/ft²
CFM/person ........................................................... 221.75 CFM/person
DESIGN COOLING DESIGN HEATING COOLING DATA AT Jul 1600 HEATING DATA AT DES HTG COOLING OA DB / WB 89.4 °F / 72.8 °F HEATING OA DB / WB 5.0 °F / 3.1 °F Sensible Latent Sensible LatentZONE LOADS Details (BTU/hr) (BTU/hr) Details (BTU/hr) (BTU/hr)Window & Skylight Solar Loads 495 ft² 23903 - 495 ft² - -Wall Transmission 1603 ft² 1074 - 1603 ft² 5313 -Roof Transmission 4385 ft² 1805 - 4385 ft² 7901 -Window Transmission 495 ft² 2597 - 495 ft² 14865 -Skylight Transmission 0 ft² 0 - 0 ft² 0 -Door Loads 0 ft² 0 - 0 ft² 0 -Floor Transmission 0 ft² 0 - 0 ft² 0 -Partitions 0 ft² 0 - 0 ft² 0 -Ceiling 0 ft² 0 - 0 ft² 0 -Overhead Lighting 9771 W 20073 - 0 0 -Task Lighting 1320 W 3874 - 0 0 -Electric Equipment 5178 W 16564 - 0 0 -People 28 5662 5740 0 0 0Infiltration - 0 0 - 0 0Miscellaneous - 0 0 - 0 0Safety Factor 0% / 0% 0 0 0% 0 0>> Total Zone Loads - 75551 5740 - 28080 0Zone Conditioning - 80447 5740 - 13117 0Plenum Wall Load 0% 0 - 0 0 -Plenum Roof Load 70% 4211 - 0 0 -Plenum Lighting Load 30% 10001 - 0 0 -Return Fan Load 4636 CFM 0 - 560 CFM 0 -Ventilation Load 4636 CFM 47475 86478 560 CFM 28950 0Supply Fan Load 4636 CFM 14439 - 560 CFM -5040 -Space Fan Coil Fans - 0 - - 0 -Duct Heat Gain / Loss 0% 0 - 0% 0 ->> Total System Loads - 156574 92218 - 37027 0Central Cooling Coil - 156574 92218 - 0 0Terminal Reheat Coils - 0 - - 37027 ->> Total Conditioning - 156574 92218 - 37027 0Key: Positive values are clg loads Positive values are htg loads Negative values are htg loads Negative values are clg loads
17
Table 1. Annual Costs Component
LCHC ($)
Air System Fans 4,694
Cooling 2,838
Heating 202
Pumps 1,393
Cooling Tower Fans 0
HVAC Sub-Total 9,127
Lights 14,157
Electric Equipment 4,198
Misc. Electric 4,520
Misc. Fuel Use 1,147
Non-HVAC Sub-Total 24,021
Grand Total 33,148 Table 2. Annual Cost per Unit Floor Area
Component LCHC ($/ft²)
Air System Fans 0.193
Cooling 0.117
Heating 0.008
Pumps 0.057
Cooling Tower Fans 0.000
HVAC Sub-Total 0.376
Lights 0.583
Electric Equipment 0.173
Misc. Electric 0.186
Misc. Fuel Use 0.047
Non-HVAC Sub-Total 0.990
Grand Total 1.366
Gross Floor Area (ft²) 24270.0
Conditioned Floor Area (ft²) 24270.0 Note: Values in this table are calculated using the Gross Floor Area. Table 3. Component Cost as a Percentage of Total Cost
Component LCHC
( % ) Air System Fans 14.2
Cooling 8.6
Heating 0.6
Pumps 4.2
Cooling Tower Fans 0.0
HVAC Sub-Total 27.5
Lights 42.7
Electric Equipment 12.7
Misc. Electric 13.6
Misc. Fuel Use 3.5
Non-HVAC Sub-Total 72.5
Grand Total 100.0
18
Table 1. Annual Costs Component
LCHC ($)
HVAC Components
Electric 8,924
Natural Gas 202
Fuel Oil 0
Propane 0
Remote HW 0
Remote Steam 0
Remote CW 0
HVAC Sub-Total 9,127
Non-HVAC Components
Electric 22,874
Natural Gas 1,147
Fuel Oil 0
Propane 0
Remote HW 0
Remote Steam 0
Non-HVAC Sub-Total 24,021
Grand Total 33,148 Table 2. Annual Energy Consumption
Component LCHC
HVAC Components
Electric (kWh) 109,671
Natural Gas (Therm) 3,070
Fuel Oil (na) 0
Propane (na) 0
Remote HW (na) 0
Remote Steam () 80,846
Remote CW (na) 0
Non-HVAC Components
Electric (kWh) 281,094
Natural Gas (Therm) 17,393
Fuel Oil (na) 0
Propane (na) 0
Remote HW (na) 0
Remote Steam () 0
Totals
Electric (kWh) 390,765
Natural Gas (Therm) 20,463
Fuel Oil (na) 0
Propane (na) 0
Remote HW (na) 0
Remote Steam () 80,846
Remote CW (na) 0
19
Table 3. Annual Emissions
Component LCHC CO2 (lb) 0
SO2 (kg) 0
NOx (kg) 0 Table 4. Annual Cost per Unit Floor Area
Component LCHC ($/ft²)
HVAC Components
Electric 0.368
Natural Gas 0.008
Fuel Oil 0.000
Propane 0.000
Remote HW 0.000
Remote Steam 0.000
Remote CW 0.000
HVAC Sub-Total 0.376
Non-HVAC Components
Electric 0.943
Natural Gas 0.047
Fuel Oil 0.000
Propane 0.000
Remote HW 0.000
Remote Steam 0.000
Non-HVAC Sub-Total 0.990
Grand Total 1.366
Gross Floor Area (ft²) 24270.0
Conditioned Floor Area (ft²) 24270.0 Note: Values in this table are calculated using the Gross Floor Area.
20
Table 5. Component Cost as a Percentage of Total Cost
Component LCHC
( % )
HVAC Components
Electric 26.9
Natural Gas 0.6
Fuel Oil 0.0
Propane 0.0
Remote HW 0.0
Remote Steam 0.0
Remote CW 0.0
HVAC Sub-Total 27.5
Non-HVAC Components
Electric 69.0
Natural Gas 3.5
Fuel Oil 0.0
Propane 0.0
Remote HW 0.0
Remote Steam 0.0
Non-HVAC Sub-Total 72.5
Grand Total 100.0
14.2% Air System Fans
8.6% Cooling0.6% Heating 4.2%Pumps
42.7%Lights
12.7% Electric Equipment
13.6% Misc. Electric
3.5% Misc. Fuel Use
14.2% Air System Fans
8.6% Cooling0.6% Heating 4.2%Pumps
42.7%Lights
12.7% Electric Equipment
13.6% Misc. Electric
3.5% Misc. Fuel Use
1. Annual Costs
21
Component Annual Cost
($) ($/ft²)Percent of Total
(%) Air System Fans 4,694 0.193 14.2
Cooling 2,838 0.117 8.6
Heating 202 0.008 0.6
Pumps 1,393 0.057 4.2
Cooling Tower Fans 0 0.000 0.0
HVAC Sub-Total 9,127 0.376 27.5
Lights 14,157 0.583 42.7
Electric Equipment 4,198 0.173 12.7
Misc. Electric 4,520 0.186 13.6
Misc. Fuel Use 1,147 0.047 3.5
Non-HVAC Sub-Total 24,021 0.990 72.5
Grand Total 33,148 1.366 100.0 Note: Cost per unit floor area is based on the gross building floor area. Gross Floor Area ....................................... 24270.0 ft² Conditioned Floor Area ............................. 24270.0 ft²
26.9% HVAC Electric
0.6%HVAC Natural Gas
69.0%Non-HVAC Electric
3.5% Non-HVAC Natural Gas
26.9% HVAC Electric
0.6%HVAC Natural Gas
69.0%Non-HVAC Electric
3.5% Non-HVAC Natural Gas
1. Annual Costs
22
Component Annual Cost
($/yr) ($/ft²)Percent of Total
(%)
HVAC Components
Electric 8,924 0.368 26.9
Natural Gas 202 0.008 0.6
Fuel Oil 0 0.000 0.0
Propane 0 0.000 0.0
Remote Hot Water 0 0.000 0.0
Remote Steam 0 0.000 0.0
Remote Chilled Water 0 0.000 0.0
HVAC Sub-Total 9,127 0.376 27.5
Non-HVAC Components
Electric 22,874 0.943 69.0
Natural Gas 1,147 0.047 3.5
Fuel Oil 0 0.000 0.0
Propane 0 0.000 0.0
Remote Hot Water 0 0.000 0.0
Remote Steam 0 0.000 0.0
Non-HVAC Sub-Total 24,021 0.990 72.5
Grand Total 33,148 1.366 100.0 Note: Cost per unit floor area is based on the gross building floor area. Gross Floor Area ....................................... 24270.0 ft² Conditioned Floor Area ............................. 24270.0 ft²
27.5% HVAC
72.5%Non-HVAC
27.5% HVAC
72.5%Non-HVAC
23
1. Annual Costs Component
Annual Cost($/yr) ($/ft²)
Percent of Total (%)
HVAC 9,127 0.376 27.5
Non-HVAC 24,021 0.990 72.5
Grand Total 33,148 1.366 100.0 Note: Cost per unit floor area is based on the gross building floor area. Gross Floor Area ....................................... 24270.0 ft² Conditioned Floor Area ............................. 24270.0 ft² 1. Annual Coil Loads Component
Load (kBTU) (kBTU/ft²)
Cooling Coil Loads 808,703 33.321
Heating Coil Loads 358,920 14.789
Grand Total 1,167,623 48.110 2. Energy Consumption by System Component
Component Site Energy
(kBTU) Site Energy
(kBTU/ft²)Source Energy
(kBTU)Source Energy
(kBTU/ft²) Air System Fans 196,816 8.109 702,913 28.962
Cooling 118,980 4.902 424,929 17.508
Heating 387,890 15.982 387,890 15.982
Pumps 58,402 2.406 208,578 8.594
Cooling Towers 0 0.000 0 0.000
HVAC Sub-Total 762,087 31.400 1,724,310 71.047
Lights 593,582 24.457 2,119,936 87.348
Electric Equipment 176,009 7.252 628,604 25.901
Misc. Electric 189,503 7.808 676,796 27.886
Misc. Fuel Use 1,739,304 71.665 1,739,304 71.665
Non-HVAC Sub-Total 2,698,398 111.182 5,164,640 212.799
Grand Total 3,460,485 142.583 6,888,949 283.846 Notes: 1. 'Cooling Coil Loads' is the sum of all air system cooling coil loads. 2. 'Heating Coil Loads' is the sum of all air system heating coil loads. 3. Site Energy is the actual energy consumed. 4. Source Energy is the site energy divided by the electric generating efficiency (28.0%). 5. Source Energy for fuels equals the site energy value. 6. Energy per unit floor area is based on the gross building floor area. Gross Floor Area ............................................ 24270.0 ft² Conditioned Floor Area .................................. 24270.0 ft² 1. Annual Coil Loads Component
Load (kBTU) (kBTU/ft²)
Cooling Coil Loads 808,703 33.321
Heating Coil Loads 358,920 14.789
Grand Total 1,167,623 48.110 2. Energy Consumption by Energy Source
24
Component Site Energy
(kBTU) Site Energy
(kBTU/ft²)Source Energy
(kBTU)Source Energy
(kBTU/ft²)
HVAC Components
Electric 374,198 15.418 1,336,422 55.065
Natural Gas 307,043 12.651 307,043 12.651
Fuel Oil 0 0.000 0 0.000
Propane 0 0.000 0 0.000
Remote Hot Water 0 0.000 0 0.000
Remote Steam 80,846 3.331 80,846 3.331
Remote Chilled Water 0 0.000 0 0.000
HVAC Sub-Total 762,088 31.400 1,724,311 71.047
Non-HVAC Components
Electric 959,093 39.518 3,425,333 141.134
Natural Gas 1,739,304 71.665 1,739,304 71.665
Fuel Oil 0 0.000 0 0.000
Propane 0 0.000 0 0.000
Remote Hot Water 0 0.000 0 0.000
Remote Steam 0 0.000 0 0.000
Non-HVAC Sub-Total 2,698,397 111.182 5,164,637 212.799
Grand Total 3,460,485 142.583 6,888,948 283.846 Notes: 1. 'Cooling Coil Loads' is the sum of all air system cooling coil loads. 2. 'Heating Coil Loads' is the sum of all air system heating coil loads. 3. Site Energy is the actual energy consumed. 4. Source Energy is the site energy divided by the electric generating efficiency (28.0%). 5. Source Energy for fuels equals the site energy value. 6. Energy per unit floor area is based on the gross building floor area. Gross Floor Area ............................................ 24270.0 ft² Conditioned Floor Area .................................. 24270.0 ft²
0
250
500
750
1000
1250
Cos
t ($)
MonthJan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Air System Fans Cooling Heating Pumps
Lights Electric Equipment Misc. Electric Misc. Fuel Use
1. HVAC Component Costs
25
Month Air System Fans
($) Cooling
($) Heating
($)Pumps
($)Cooling Towers
($) HVAC Total
($)January 321 21 60 182 0 584
February 281 24 47 189 0 541
March 300 17 22 98 0 437
April 368 107 6 77 0 558
May 449 259 0 86 0 794
June 489 556 0 100 0 1,145
July 538 662 0 116 0 1,316
August 484 671 0 110 0 1,265
September 451 351 0 99 0 901
October 399 107 1 86 0 593
November 296 46 15 80 0 437
December 318 18 51 171 0 558
Total 4,694 2,838 202 1,393 0 9,127 2. Non-HVAC Component Costs
Month Lights
($)
Electric Equipment
($) Misc. Electric
($)Misc. Fuel Use
($)Non-HVAC Total
($) Grand Total
($)January 1,248 370 398 101 2,117 2,701
February 1,085 322 346 88 1,841 2,382
March 1,139 338 364 92 1,933 2,370
April 1,193 354 381 97 2,025 2,583
May 1,193 354 381 97 2,025 2,819
June 1,139 338 364 92 1,933 3,078
July 1,248 370 398 101 2,117 3,433
August 1,139 338 364 92 1,933 3,198
September 1,193 354 381 97 2,025 2,926
October 1,248 370 398 101 2,117 2,710
November 1,085 322 346 88 1,841 2,278
December 1,248 370 398 101 2,117 2,675
Total 14,157 4,198 4,520 1,147 24,021 33,148
0
250
500
750
1000
1250
1500
1750
2000
Cos
t ($)
MonthJan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
HVAC Electric HVAC Natural Gas
Non-HVAC Electric Non-HVAC Natural Gas
1. HVAC Costs
26
Month Electric
($) Natural Gas
($) Fuel Oil
($)Propane
($)
Remote Hot Water
($)Remote Steam
($)
Remote Chilled Water
($)January 524 60 0 0 0 0 0
February 493 47 0 0 0 0 0
March 415 22 0 0 0 0 0
April 552 6 0 0 0 0 0
May 793 0 0 0 0 0 0
June 1,145 0 0 0 0 0 0
July 1,316 0 0 0 0 0 0
August 1,264 0 0 0 0 0 0
September 901 0 0 0 0 0 0
October 592 1 0 0 0 0 0
November 422 15 0 0 0 0 0
December 507 51 0 0 0 0 0
Total 8,924 202 0 0 0 0 0 2. Non-HVAC Costs
Month Electric
($) Natural Gas
($) Fuel Oil
($)Propane
($)
Remote Hot Water
($)Remote Steam
($) January 2,016 101 0 0 0 0
February 1,753 88 0 0 0 0
March 1,840 92 0 0 0 0
April 1,928 97 0 0 0 0
May 1,928 97 0 0 0 0
June 1,840 92 0 0 0 0
July 2,016 101 0 0 0 0
August 1,840 92 0 0 0 0
September 1,928 97 0 0 0 0
October 2,016 101 0 0 0 0
November 1,753 88 0 0 0 0
December 2,016 101 0 0 0 0
Total 22,874 1,147 0 0 0 0 1. Monthly Energy Use by System Component
27
Component Jan Feb Mar Apr May Jun Jul Aug Sep
Air System Fans (kWh) 3950 3454 3681 4521 5514 6014 6615 5947 5547 Cooling
Electric (kWh) 264 289 212 1312 3177 6829 8137 8240 4309
Natural Gas (Therm) 0 0 0 0 0 0 0 0 0
Fuel Oil (na) 0 0 0 0 0 0 0 0 0
Propane (na) 0 0 0 0 0 0 0 0 0
Remote HW (na) 0 0 0 0 0 0 0 0 0
Remote Steam () 0 0 0 0 0 0 0 0 0
Remote CW (na) 0 0 0 0 0 0 0 0 0 Heating
Electric (kWh) 0 0 0 0 0 0 0 0 0
Natural Gas (Therm) 907 705 338 90 1 0 0 0 0
Fuel Oil (na) 0 0 0 0 0 0 0 0 0
Propane (na) 0 0 0 0 0 0 0 0 0
Remote HW (na) 0 0 0 0 0 0 0 0 0
Remote Steam () 10206 8423 12046 14791 5650 2784 121 592 2704 Pumps (kWh) 2231 2320 1205 945 1057 1229 1421 1350 1212 Clg. Tower Fans (kWh) 0 0 0 0 0 0 0 0 0 Lighting (kWh) 15331 13331 13998 14664 14664 13998 15331 13998 14664
Electric Eqpt. (kWh) 4546 3953 4151 4348 4348 4151 4546 4151 4348
Misc. Electric (kWh) 4894 4256 4469 4682 4682 4469 4894 4469 4682 Misc. Fuel
Natural Gas (Therm) 1533 1333 1399 1466 1466 1399 1533 1399 1466
Propane (na) 0 0 0 0 0 0 0 0 0
Remote HW (na) 0 0 0 0 0 0 0 0 0
Remote Steam () 0 0 0 0 0 0 0 0 0 1. HVAC Energy Use Month
Electric (kWh)
Natural Gas (Therm)
Fuel Oil(na)
Propane(na)
Remote HW(na)
Remote Steam()
Remote CW(na)
Jan 6,444 907 0 0 0 10,206 0
Feb 6,063 705 0 0 0 8,423 0
Mar 5,098 338 0 0 0 12,046 0
Apr 6,778 90 0 0 0 14,791 0
May 9,748 1 0 0 0 5,650 0
Jun 14,072 0 0 0 0 2,784 0
Jul 16,173 0 0 0 0 121 0
Aug 15,537 0 0 0 0 592 0
Sep 11,068 0 0 0 0 2,704 0
Oct 7,275 17 0 0 0 6,597 0
Nov 5,188 232 0 0 0 8,587 0
Dec 6,227 779 0 0 0 8,347 0
Totals 109,671 3,070 0 0 0 80,846 0
28
2. Non-HVAC Energy Use
Month Electric
(kWh) Natural Gas
(Therm) Fuel Oil
(na)Propane
(na)Remote HW
(na)Remote Steam
()Jan 24,771 1,533 0 0 0 0
Feb 21,540 1,333 0 0 0 0
Mar 22,617 1,399 0 0 0 0
Apr 23,694 1,466 0 0 0 0
May 23,694 1,466 0 0 0 0
Jun 22,617 1,399 0 0 0 0
Jul 24,771 1,533 0 0 0 0
Aug 22,617 1,399 0 0 0 0
Sep 23,694 1,466 0 0 0 0
Oct 24,771 1,533 0 0 0 0
Nov 21,540 1,333 0 0 0 0
Dec 24,771 1,533 0 0 0 0
Totals 281,094 17,393 0 0 0 0 1. Component Charges Billing Period
Energy Charges ($)
Demand Charges ($)
CustomerCharges
($)Taxes
($)Total Charge
($)Jan 2,419 0 0 121 2,540
Feb 2,139 0 0 107 2,246
Mar 2,148 0 0 107 2,255
Apr 2,362 0 0 118 2,480
May 2,592 0 0 130 2,721
Jun 2,843 0 0 142 2,986
Jul 3,173 0 0 159 3,332
Aug 2,957 0 0 148 3,105
Sep 2,694 0 0 135 2,829
Oct 2,484 0 0 124 2,608
Nov 2,071 0 0 104 2,175
Dec 2,402 0 0 120 2,522
Totals 30,284 0 0 1,514 31,799 2. Totals
Billing Period
Total Charges ($)
Total Consumption
(kWh) Avg Price
($/kWh)Jan 2,540 31,215 0.0814
Feb 2,246 27,603 0.0814
Mar 2,255 27,715 0.0814
Apr 2,480 30,472 0.0814
May 2,721 33,442 0.0814
Jun 2,986 36,689 0.0814
Jul 3,332 40,944 0.0814
Aug 3,105 38,154 0.0814
Sep 2,829 34,762 0.0814
Oct 2,608 32,046 0.0814
Nov 2,175 26,728 0.0814
Dec 2,522 30,998 0.0814
Totals 31,799 390,768 0.0814
29
3. Consumption Totals Billing Period
Peak (kWh)
Mid-Peak (kWh)
Normal Peak(kWh)
Off-Peak(kWh)
Overall(kWh)
Jan 0 0 0 0 31,215
Feb 0 0 0 0 27,603
Mar 0 0 0 0 27,715
Apr 0 0 0 0 30,472
May 0 0 0 0 33,442
Jun 0 0 0 0 36,689
Jul 0 0 0 0 40,944
Aug 0 0 0 0 38,154
Sep 0 0 0 0 34,762
Oct 0 0 0 0 32,046
Nov 0 0 0 0 26,728
Dec 0 0 0 0 30,998
Totals 0 0 0 0 390,768 4. Billing Demands Billing Period
Peak (kW)
Mid-Peak (kW)
Normal Peak(kW)
Off-Peak(kW)
Overall(kW)
Jan 0.0 0.0 0.0 0.0 92.0
Feb 0.0 0.0 0.0 0.0 91.9
Mar 0.0 0.0 0.0 0.0 112.9
Apr 0.0 0.0 0.0 0.0 134.0
May 0.0 0.0 0.0 0.0 137.2
Jun 0.0 0.0 0.0 0.0 156.3
Jul 0.0 0.0 0.0 0.0 146.6
Aug 0.0 0.0 0.0 0.0 150.7
Sep 0.0 0.0 0.0 0.0 150.0
Oct 0.0 0.0 0.0 0.0 121.1
Nov 0.0 0.0 0.0 0.0 119.2
Dec 0.0 0.0 0.0 0.0 99.6 5. Maximum Demands Billing Period
Peak (kW)
Mid-Peak (kW)
Normal Peak(kW)
Off-Peak(kW)
Overall(kW)
Jan 0.0 0.0 0.0 0.0 92.0
Feb 0.0 0.0 0.0 0.0 91.9
Mar 0.0 0.0 0.0 0.0 112.9
Apr 0.0 0.0 0.0 0.0 134.0
May 0.0 0.0 0.0 0.0 137.2
Jun 0.0 0.0 0.0 0.0 156.3
Jul 0.0 0.0 0.0 0.0 146.6
Aug 0.0 0.0 0.0 0.0 150.7
Sep 0.0 0.0 0.0 0.0 150.0
Oct 0.0 0.0 0.0 0.0 121.1
Nov 0.0 0.0 0.0 0.0 119.2
Dec 0.0 0.0 0.0 0.0 99.6
30
6. Time Of Maximum Demands Billing Period
Peak (m/d/h)
Mid-Peak (m/d/h)
Normal Peak(m/d/h)
Off-Peak(m/d/h)
Overall(m/d/h)
Jan n/a n/a n/a n/a 1/1/1300
Feb n/a n/a n/a n/a 2/14/1400
Mar n/a n/a n/a n/a 3/28/1300
Apr n/a n/a n/a n/a 4/28/1300
May n/a n/a n/a n/a 5/22/1700
Jun n/a n/a n/a n/a 6/17/1400
Jul n/a n/a n/a n/a 7/3/1400
Aug n/a n/a n/a n/a 8/28/1600
Sep n/a n/a n/a n/a 9/5/1600
Oct n/a n/a n/a n/a 10/15/1400
Nov n/a n/a n/a n/a 11/5/1700
Dec n/a n/a n/a n/a 12/2/1400