Download - Thermal Inventory
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Air Flow Latent Heat
Steam Leak or Flow & Cost of Steam
Heat Flow by Conduction
Thermal End-Use Inventory
Air Flow - Sensible Heat
Hot or Cold Fluid
Heat Moved by a Refrigeration System
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Air Flow Thigh Tlow Heat Flow Monthly
litres/sec C C kW Hours kWh GJ
18,000 20 5 332.6 732 243,492 876.6- - -
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Calculation assumes are at or about 50% RH and 21C, for other conditions adjust constant: 1.232 J-litre-1
C-1
Air Flow - Sensible Heat
Monthly Energy
Description
Main Plant Exhaust
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Air Flow Thigh RHhigh Tlow RHlow Hhigh Hlow Heat Flow Monthly
litres/sec ( C ) (%) ( C ) (%) g/kg g/kg kW Hours kWh GJ
2,000 40 90% 20 50% 43.8 7.3 219.8 732 160,920 579.3- - -- - -- - -- - -- - -- - -- - -- - -- - -- - -
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This calculation assumes conditions found in HVAC or plant exhaust for which the constant is: 3.012 J-litre-1
Ambient atmospheric pressure: 101,325 Pa
Air Flow - Latent Heat
Monthly Energy
Description
Dryer Exhaust
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Heat
Flow Capacity Thigh Tlow Heat Flow Monthlykg/s kJ/kg-C C C kW Hours kWh GJ
0.350 4.200 40 10 44.10 732 32,281 116.2- - -- - -- - -
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Hot or Cold Fluid
Monthly EnergyDescription
Chemical Reactor Cooling
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Steam Steam Steam Steam
Flow Pressure Flow Enthalpy Heat Flow Monthly
Type kPA guage kg/hr kJ/kg kW Hours kWh GJ
Plume Length (mmx100) 20.0 520 105.6 2,758 81 732 59,245 213.3
Estimation of the Cost of Saturated Steam
Incremental Cost of Fuel $0.25 /unitEnergy Content 37.60 MJ/unitBoiler Efficiency 76%Saturated Steam Pressure (gauge) 700.0 kPa guageSteam Enthalpy (Vapour + Water) 2769 kJ/kgCost per 1000 kg $24.23 /1000 kg
Cost per 1000 lbs $11.01 /1000 lb
Note: Steam enthalpies are calculated for saturated steam using an approximation with an accuracy of +/- 1%.
Steam Flow, Leak & Cost
Monthly Energy
Description
Small Dryer in Plant B
Size Specifier
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Power Heat Flow Monthly
Input (kW) COP kW Hours kWh
100.0 3.20 320.00 732 234,240- -- -- -- -- -
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Refrigeration
Monthly
Description
Molding Machine Chillers
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Area Conductance Thigh Tlow Heat Flow Monthly
m2
W/m2C C C kW Hours kWh GJ
100 0.900 20 5 1.35 732 988 3.6- - -
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Monthly Energy
Conduction
Description
Warehouse Roof