ctg hvac calculation
TRANSCRIPT
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CTG BUILDING HVAC CALCULATION
R0 08-02-2010 Released for Construction UCS UCS
01 27-01-2010 Incorporating with FTI comments UCS UCS
00 13-01-2010 UCS UCS
Rev. Date Description DSGN CHKD APPD
Project Title:
Al Qatrana Power Project
The Hashemite Kingdom of JordanThe Ministry of Energy and Mineral Resources
Owner :
Owner’s Technical advisor :
EPC Contractor :
Engineering Company:
Sub-Vendor’s Name:
Project No. Job No. Scale Sheet No.
3480870001 - - -
Document No.
KP-170-28-001
Sub-Contractor Document No.:
Sub-Supplier:
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CONTENTS
Section 1 General Information
i. General Project Informationii. Applicable Codes, Standards and Referencesiii. Calculation Method
Section 2 Design Parameters
i. Weather Dataii. Indoor Criteria
Section 3 HVAC Systems Designation
i. System Definition
Section 4 Overall Heat Transfer Coefficients (U Factors)
i. U Value Summaryii. U Value Detailed Calculations
Section 5 Outdoor Air Sizing
i. Outdoor Air Sizing
Section 6 Calculation Input Data
i. Space Input Dataii. Schedule Input Dataiii. System Input Data
Section 7 Calculation Results
i. Results Summaryii. Air System Sizing Summaryiii. Zone Sizing Summaryiv. System Design Load Summaryv. Space Load Summaryvi. Results Calculation
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SECTION 1
GENERAL INFORMATION
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i. GENERAL PROJECT INFORMATION
− Project : Al Qatrana Power Project
− Location : Jordan - Qatrana
− Building : Steam Turbine Generator
ii. APPLICABLE CODES, STANDARDS & REFERENCES
− ASHRAE ( American Society of Heating, Refrigerating and Air Conditioning Engineers).
− Jordanian National Code.
iii. HVAC CALCULATION METHOD
Supplied air flow rate for a space is determined by the zone load requirements, any possible makeupair needs due to direct exhaust and pressurization requirements. Outdoor air quantity of spacesis determined as per applicable standard to maintain acceptable indoor air quality in the space.
The software programs used for load calculation are Carrier E20-II / HAP V.4.40 & Carrier E20-II / Block Load V.3.05.
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SECTION 2
DESIGN PARAMETERS
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i. WEATHER DATA
As per 2006 ASHRAE Fundamentals Handbook design condition for Amman
Latitude : 31.98° N
Daily Range : 11.3 °C
− Outdoor Design Conditions ( Ventilation system ):
The maximum outdoor temperature considered for design of ventilation system shall be 38.9 °
− Indoor Design Conditions ( Ventilation system ):
The temperature rise of air above the design ambient temperature : + 5 °C .
Positive pressure to be maintained insides CTG building : 25 Pa
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Prepared by: UCs Page: 1
January 12, 2010
DESIGN TEMPERATURE REPORT
Location: Amman, Jordan
Block Load 3.05
Latitude 32.0 Degree
Elevation 766.9 m
Summer Design Dry Bulb Temp 38.9 C
Summer Coincident Wet Bulb Temp 21.1 C
Daily Temperature Range 13.9 K
Winter Design Dry Bulb Temp 0.6 C
Atmospheric Clearness Number 1.00
Data Source User Defined
Hour DB WB
000 15.8 10.0
100 15.1 9.8
200 14.4 9.5
300 13.8 9.2
400 13.4 9.0
500 13.3 9.0
600 13.5 9.1
700 14.2 9.4
800 15.5 9.9
900 17.3 10.7
1000 19.4 11.5
1100 21.7 12.4
1200 24.0 13.3
1300 25.6 13.9
1400 26.7 14.3
1500 27.2 14.4
1600 26.7 14.3
1700 25.8 14.0
1800 24.2 13.4
1900 22.4 12.7
2000 20.6 12.0
2100 19.1 11.4
2200 17.7 10.8
2300 16.6 10.4
DB
WB
T e m p e r a t u r e
Hour of the day
0
5
10
15
20
25
30
0 2 4 6 8 10 12 14 16 18 20 22 24
January
TABLE 1. DESIGN PARAMETERS
TABLE 2. COOLING DESIGN TEMPERATURE PROFILES (DB/WB in C)
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Latitude 32.0 Degree
Elevation 766.9 m
Summer Design Dry Bulb Temp 38.9 C
Summer Coincident Wet Bulb Temp 21.1 C
Daily Temperature Range 13.9 K
Winter Design Dry Bulb Temp 0.6 C
Atmospheric Clearness Number 1.00
Data Source User Defined
Month NE E SE S SW W NW N HOR
January 92.7 553.0 784.1 777.3 784.1 553.0 92.7 74.3 556.1
February 203.6 646.0 782.8 695.8 782.8 646.0 203.6 86.4 684.3
March 338.6 716.8 716.3 553.9 716.3 716.8 338.6 99.4 795.3
April 462.1 715.3 590.6 362.7 590.6 715.3 462.1 112.1 854.2
May 535.2 693.9 487.6 232.7 487.6 693.9 535.2 120.8 872.7
June 556.0 676.6 439.9 190.6 439.9 676.6 556.0 147.6 871.1
July 526.2 679.6 474.6 226.1 474.6 679.6 526.2 126.0 860.7
August 446.0 690.2 569.8 350.1 569.8 690.2 446.0 117.3 836.7
September 324.4 678.6 688.5 540.0 688.5 678.6 324.4 102.9 769.1
October 200.1 616.4 755.1 676.7 755.1 616.4 200.1 88.9 671.5
November 93.0 544.6 772.3 766.2 772.3 544.6 93.0 75.3 552.7
December 68.8 512.4 777.3 794.2 777.3 512.4 68.8 68.8 499.6
Prepared by: UCs Page: 1
January 12, 2010
DESIGN SOLAR REPORT
Location: Amman, Jordan
Block Load 3.05
TABLE 1. DESIGN PARAMETERS
TABLE 2. MAXIMUM SOLAR HEAT GAINS (W/sqm)
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ii. INDOOR CRITERIA
INDOOR CONDITIONSOUTDOOR
AIRINTERNAL HEAT GAINS
SUMMER WINTER EQUIP DISSIPITEM SPACE
TEMPDB(°C)
RH(%)
TEMPDB(°C)
RH(%)
INDOORPRESS.
(Pa)REQ.
PEOPLE(No.)
LIGHTS(W/m
2)
SENS.(W)
LAT.(W)
1GAS
TURBINEAREA
43.9 NA NA NA +25 12 ACH - 21.5 514000 -
1GENERATOR
AREAS43.9 NA NA NA +25 12 ACH - 21.5 130000 -
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SECTION 3
HVAC SYSTEMS DESIGNATION
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i. SYSTEM DEFINITION:
SYSTEM-1 EQUIPMENT
NO. DESCRIPTION TYPE UNIT TAG SERVED AREANOTES
1 VENTILATION SYSTEM AIR HANDLING UNIT CTG-AHU-1GAS TURBINE
AREA
DUTY- 13.3%
2 VENTILATION SYSTEM AIR HANDLING UNIT CTG-AHU-2GAS TURBINE
AREA
DUTY- 13.3%
3 VENTILATION SYSTEM AIR HANDLING UNIT CTG-AHU-3GAS TURBINE
AREA
DUTY- 13.3%
4 VENTILATION SYSTEM AIR HANDLING UNIT CTG-AHU-4GAS TURBINE
AREA
DUTY- 13.3%
5 VENTILATION SYSTEM AIR HANDLING UNIT CTG-AHU-5GAS TURBINE
AREA
DUTY- 13.3%
6 VENTILATION SYSTEM AIR HANDLING UNIT CTG-AHU-6GAS TURBINE
AREA
DUTY- 13.3%
7 VENTILATION SYSTEM AIR HANDLING UNIT CTG-AHU-7GENERATOR
AREAS
DUTY- 10.0%
8 VENTILATION SYSTEM AIR HANDLING UNIT CTG-AHU-8GENERATOR
AREAS
DUTY- 10.0%
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SECTION 4
OVERALL HEAT TRANSFER COEFFICIENTS
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− ROOF
ITEM DESCRIPTIONTHICKNESS
(mm)
HEATTRANSFER
FILM COEFF.(h)
(W/m2.K)
THERMALCONDUCTIVITY
(k)(W/m.K)
THERMALRESISTANCE
(R)(m
2.K/W)
REFERENCES/NOTES
2 ROOF
2.1INDOOR AIR FILM
HEAT FLOW8.33 0.12
JORDANIAN NATIONALCODES
2.2 SHEET METAL NEGLIGIBLEJORDANIAN NATIONAL
CODES
2.3 POLYSTYRENE 130 0.034 3.82JORDANIAN NATIONAL
CODES
2.4 SHEET METAL NEGLIGIBLEJORDANIAN NATIONAL
CODES
2.5OUTDOOR AIR FILM
HEAT FLOW,18 km/h WIND
16.6 0.06JORDANIAN NATIONAL
CODES
OVERALL THERMALRESISTANCE
(R)(m2.K/W)
4.00
OVERALL HEATTRANSFER COEFF.
(U)(W/ m2.K)
0.25
− FLOOR
ITEM DESCRIPTIONTHICKNESS
(mm)
HEATTRANSFER
FILM COEFF.(h)
(W/m2.K)
THERMALCONDUCTIVITY
(k)(W/m.K)
THERMALRESISTANCE
(R)(m
2.K/W)
REFERENCES/NOTES
3 FLOOR
3.1INDOOR AIR FILM
HEAT FLOW8.83 0.12
JORDANIAN NATIONALCODES
3.2 RCC 300 1.2 0.25JORDANIAN NATIONAL
CODES
OVERALL THERMALRESISTANCE
(R)(m2.K/W)
0.77
OVERALL HEAT
TRANSFER COEFF.(U)(W/ m2.K)
1.30
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− EXTERIOR DOORS
ITEM DESCRIPTION
THICKNESS
(mm)
HEATTRANSFER
FILM COEFF.(h)(W/m
2.K)
THERMALCONDUCTIVITY
(k)(W/m.K)
THERMALRESISTANCE
(R)(m
2.K/W)
REFERENCES/NOTES
4 EXTERIOR DOORS
DOUBLE SKINNED PRESSEDSTEEL DOOR
OVERALL THERMALRESISTANCE
(R)(m2.K/W)
0.17JORDANIAN NATIONAL
CODES
OVERALL HEATTRANSFER COEFF.
(U)(W/ m2.K)
5.8
− WINDOWS
ITEM DESCRIPTIONTHICKNESS
(mm)
HEATTRANSFER
FILM COEFF.(h)
(W/m2.K)
THERMALCONDUCTIVITY
(k)(W/m.K)
THERMALRESISTANCE
(R)(m
2.K/W)
REFERENCES/NOTES
5 WINDOWS
Double glazing, 6mm airspace, vertically installed,operable, aluminum frame
OVERALL THERMALRESISTANCE
(R)(m2.K/W)
0.29JORDANIAN NATIONAL
CODES
OVERALL HEATTRANSFER COEFF.
(U)(W/ m2.K)
3.5
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SECTION 5
OUTDOOR AIR SIZING
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i. OUTDOOR AIR SIZING:
MINIMUM OUTDOOR AIR
REQUIREMENTSMINIMUM EXHAU
REQUIREME
RATE RATE
S Y S T E M
E Q U I P ME N T
S P A C E
F L
O OR A R E A
( m2 )
C E I L I N G
H E I GH T
( m )
S P A C E
V OL U ME
( m 3 )
P R E S S U R
( P a )
P E OP L E
( n o. )
ACH L/S.per L/s.m2
AIR
FLOW(m
3/h)
REF.
ACHL/S.per
L/S.m
2
F(m
CTG-AHU-
1
CTG-AHU-
2
CTG-AHU-
3
CTG-AHU-
4CTG-AHU-
5CTG-AHU-
6
GAS
TURBINE AREA
1295 22 28490
CTG-AHU-
7
1
CTG-AHU-
8
GENERATORAREAS
580 10.1 5860
+25 - 12 - - 468300AS PER
DESIGN
REQ.- - -
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SECTION 6
CALCULATION INPUT DATA
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TYPE 1 TYPE 2 TYPE 3
WALL DETAIL
U-Value (W/sqm/K ) 0.250 0.570 0.570
Weight (kg/sqm) 361 361 361
Color Medium Light Light
ROOF DETAILU-Value (W/sqm/K ) 0.250 0.740 0.740
Weight (kg/sqm) Medium Medium Medium
Color Medium Light Light
GLASS INFORMATION
U-Value (W/sqm/K ) 3.500 3.010 3.010
Glass Factor 0.50 0.51 0.51
Interior Shades No No No
SHADE INFORMATION
Window Height (m) 1.0 2.4 2.4
Window Width (m) 1.0 1.2 1.2
Reveal Depth (mm) 0.0 0.0 0.0
Overhang Height (mm) 0.0 0.0 0.0
Overhang Ext (mm) 0.0 0.0 0.0
Fin Separation (mm) 0.0 0.0 0.0
Fin Extension (mm) 0.0 0.0 0.0
GENERAL ZONE DATA
Zone Name CTG HALL
Floor Area 1,875.0 sqm
Building Weight Medium
LIGHTING DATA
Lighting Usage 21.53 W/sqm
Unoccupied Diversity 0 %
Wattage Multiplier 1.10
Fixture Type Recessed, Not Vented
OTHER ELECTRIC
Usage 644,000 Watts
Unoccupied Diversity 0 %
PEOPLE
Occupancy 1.0 People
Unoccupied Diversity 0 %
Activity Level Seated At Rest
Sensible Gain 67.4 W /person
Latent Gain 35.2 W /person
MISCELLANEOUS LOADS
Sensible 0.0 W
Latent 0.0 W
Unoccupied Diversity 0 %
INFILTRATION
Cooling .00 L/s/sqm
Heating .00 L/s/sqm
SLAB
Area 1,659.0 sqm
Perimeter 288.0 m
Depth 0.30 m
Prepared by: UCs
ZoneName: CTG HALL Block Load 3.05
Location: Amman, Jordan
ZONE INPUT REPORT
February 02, 2010
Page: 1
TABLE 1. GENERAL ZONE DATA
TABLE 2. BUILDING MATERIAL
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Partition 1 Partition 2 Partition 3
Net Area (sqm) 0.00 0.00 0.00
U-Value (W/sqm/K ) .568 .568 .568
Adjacent Region Temp
Cooling 32.2 C 32.2 C 32.2 C
Heating 32.2 C 32.2 C 32.2 C
Wall Gross Glass Glass Shade Glass Glass Shade
Exposure Type Area Type Area Type Type Area Type
(sqm) (sqm) (sqm)
East 1 1,967.3 1 74.0 0 0 0.0 0
West 1 1,967.3 1 74.0 0 0 0.0 0
South 1 495.0 1 12.0 0 0 0.0 0
North 1 495.0 1 18.0 0 0 0.0 0
Roof 1 1,659.0 0 0.0 0 0 0.0 0
Prepared by: UCs
ZoneName: CTG HALL Block Load 3.05
Location: Amman, Jordan
ZONE INPUT REPORT
February 02, 2010
Page: 2
TABLE 3. EXPOSURE AREA
TABLE 4. PARTITION DATA
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All zones served by a common air handler
1
Prepared by: UCs
System: Ventilation
Page: 1
February 02, 2010
SYSTEM INPUT REPORT
Location: Amman, Jordan
Block Load 3.05
1) CTG HALL
THERMOSTAT SETPOINTS
Cooling (Occ.) 43.0 C
Cooling (Unocc.) 43.0 C
Heating 21.0 C
RETURN AIR PLENUM No
FAN
Configuration Blow Thru
Static Pressure 250.00 Pa.
System Type Clg and Warm Air Ht
System Start :00
Duration 24 hrs
SIZING SPECIFICATIONS
Supply 38.0 C
Ventilation 15.00 L/s/Per
Exhaust 0.00 L/s
FACTORS
Coil Bypass 0.050
Safety (Sens) 0 %
Safety (Latent) 0 %Heating Safety 0 %
Selected Zones:
Total Zones Selected:
System Arrangement:
TABLE 2. SYSTEM ZONING INFORMATION
TABLE 1. HVAC SYSTEM DESCRIPTION
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SECTION 7
CALCULATION RESULTS
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i. RESULTS SUMMARY:
SUMMER
INDOORCOND.
COOLINGLOAD
INDOCON
TEM SPACEFLOORAREA(m
2)
CEILINGHEIGHT
(m)
SPACEVLOUME
(m3)
PRESS.REL. TO
ADJ.SPACE
(Pa)
D B ( ° C )
R H ( % )
S E N .
( k W )
L A T .
( k W )
SUPPLYAIIRFLOW
(m3/h)
RETURNAIIRFLOW
(m3/h)
EXHAUSTAIIRFLOW
(m3/h)
OUTDOORAIR
(m3/h)
D B ( ° C )
1.1 CTG 1659 23 38157 +25 43 NA - - 476000 - - 476000 -
TOTAL 476000 476000
CTG-AHU1
63500 63500
CTG-AHU2
63500 63500
CTG-AHU3
63500 63500
CTG-AHU4
63500 63500
CTG-AHU5
63500 63500
CTG-AHU6
63500 63500
CTG-AHU7 47500
47500
CTG-AHU8
47500 47500
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Design Load: July 17:00
Db/Wb Temp 37.5/ 20.7 C
Winter Design Temp 0.6 C
Prepared by: UCs
System: Ventilation
Page: 1
February 02, 2010
DETAILED SYSTEM LOAD REPORT
Location: Amman, Jordan
Block Load 3.05
Total Cooling Cooling Heating
Net Area Transmission Solar Load Transmission
Component (sqm) (W ) (W ) (W )
NE 0 0 - 0
E 1,893 -546 - 9,651
SE 0 0 - 0
S 483 -674 - 2,462
SW 0 0 - 0
W 1,893 -1,727 - 9,651
NW 0 0 - 0
N 477 -928 - 2,431
NE 0 0 0 0
E 74 -1,867 5,976 5,281
SE 0 0 0 0
S 12 -303 524 856
SW 0 0 0 0
W 74 -1,867 10,747 5,281
NW 0 0 0 0
N 18 -454 778 1,285
Hor 0 0 0 0
Design Cooling Loads Design
Sensible Latent Heating
Load Component Details (W ) (W ) (W )
Solar Loads 178 sqm 18,024 - -
Wall Transmission 4,747 sqm -3,874 - 24,194
Roof Transmission 1,659 sqm 1,700 - 8,456
Glass Transmission 178 sqm -4,492 - 12,702
Skylight Transmission 0 sqm 0 - 0
Partitions 0 sqm 0 - 0
Lighting 21.53 W/sqm 44,323 - -Other Electric 343.47 W/sqm 643,620 - -
People 1 People 67 35 -
Infiltration 0 0 0
Miscellaneous 0 0 -
Slab 1,659 sqm - - 6,403
Pulldown/Warm-Up 0 - -
Safety Factor 0/0/0 % 0 0 0
Total Zone Loads 699,368 35 51,756
Ventilation Load 12 L/s -73 -35 269
Supply Fan Load 126,997 L/s 58,792 - -
Plenum Load thru Wall 0 % 0 - -
Plenum Load thru Roof 0 % 0 - -
Plenum Load - Lights 0 % 0 - -
Reheat Load 0 - -
Total Coil Loads 758,087 0 52,025
Walls:
Glass:
TABLE 1. CALCULATION INFORMATION
TABLE 3. WALL AND GLASS BREAKDOWN
TABLE 2. LOAD COMPONENT SUMMARY
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Prepared by: UCs
System: Ventilation
Page: 1
February 02, 2010
DETAILED ZONE LOAD REPORT
Location: Amman, Jordan
Block Load 3.05
Total Cooling Cooling Heating
Net Area Transmission Solar Load Transmission
Component (sqm) (W ) (W ) (W )
NE 0 0 - 0
E 1,893 -546 - 9,651
SE 0 0 - 0
S 483 -674 - 2,462
SW 0 0 - 0
W 1,893 -1,727 - 9,651
NW 0 0 - 0N 477 -928 - 2,431
NE 0 0 0 0
E 74 -1,867 5,976 5,281
SE 0 0 0 0
S 12 -303 524 856
SW 0 0 0 0
W 74 -1,867 10,747 5,281
NW 0 0 0 0
N 18 -454 778 1,285
Hor 0 0 0 0
Design Cooling Loads Design
Sensible Heating
Load Component Details (W ) (W )
Solar Loads 178 sqm 18,024 -
Wall Transmission 4,747 sqm -3,874 24,194
Roof Transmission 1,659 sqm 1,700 8,456
Glass Transmission 178 sqm -4,492 12,702Skylight Transmission 0 sqm 0 0
Partitions 0 sqm 0 0
Lighting 21.53 W/sqm 44,323 -
Other Electric 343.47 W/sqm 643,620 -
People 1 People 67 -
Infiltration 0 0
Miscellaneous 0 -
Slab 1,659 sqm - 6,403
Pulldown/Warm-Up 0 -
Safety Factor 0/ 0 % 0 0
Total Zone Loads 699,368 51,756
Zone Name: CTG HALLSystem Name: Ventilation
Design Load: July 17:00
Db/Wb Temp: 37.5/ 20.7 C
Glass:
Walls:
TABLE 3. WALL AND GLASS BREAKDOWN
TABLE 2. LOAD COMPONENT SUMMARY
TABLE 1. GENERAL INFORMATION
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P:\U00-238-03\calcs\mech\CTG\CTG HVAC CALCULATION (23-01-2010).rtf Page 19
vi. RESULTS CALCULATION:
− Solar Loads = 18,024 W (From E20 II-Block Load)
− Wall Transmission = -3,874 W (From E20 II-Block Load)
− Roof Transmission = 1,700 W (From E20 II-Block Load)
− Glass Transmission = -4,492 W (From E20 II-Block Load)
− Lighting = 44,323 W (From E20 II-Block Load)
− Heat dissipation in generator building = 130,000 W
− Heat dissipation from GT building = 514,000 W
Total Load = 699,681 W
Temperature difference = 5 °C
Specific heat at constant pressure (Cp) = 1.007 kJ/kg.°C
Density of air @ 38.9 °C ambient condition ()= 1.1 kg/m3
To find the Air Flow required for ventilation:
Heat Load = Q X Cp X X T
699,681 = Q X 1.007 X 1.1 X 5
Q1 = 126,330 l/s (Based on waste heat removal basis)
= 454788 m3/hr
Q2 = ACH X Volume (Based on air change method)
= 12 X ((1295 X 22)+(2 X 290 X10.1))
= 412176 m3/hr
To maintain ( P = 25 Pa) inside CTG building we need air flow = 13415 m3 /hr
Total air flow required for ventilation = 457884 + 13415
= 468,292 m3 /hr
476,000 m3/hr
Distribution of fans shall be as follows:
- Heat dissipation in generator building = 130,000 W- Heat dissipation from GT building = 514,000 W
Percentage of heat in generator building = 130 / (514 +130) = 20%
Therefore, 20% of the required air will be supplied to generator areas and 80% to turbine area.
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Exhaust air quantity = 476000 -13415
= 462,585 m3/hr
= 128.5 m3/s
Exhaust air velocity = 1.75 m/s
Required area for roof vent = 128.5 / 1.75
= 73.4 m2
= 74 m2
Required area (A) = Available area – area blocked by rafters.
= AAV - AR
Available area (AAV) = L x W
where, L = Available span length for roof vent (84.0m)
W = Throat width (m)
Area blocked by rafters (AR) = LR x WR x N
where, LR = Length of the rafter blocking exhaust air flow i.e nothing but throat width (W)
WR = Rafter width (0.229 m)
N = No. of rafters (17 nos.)
A = AAV - AR
= (L x W - LR x WR x N)
74.0 = (84.0 x W – W x 0.229 x 17)
W = 74.0 / 80.11
= 0.924 m
Throat size for roof vent = 950 mm