FUEL CONSUMPTION BY HEAING UNITS
The amount of fuel required for annual heating can be calculated using the formula:
F = H / (e x FHC)
Where
• F = Quantity of fuel consumed (in gallon, MCF, kW, etc.) per year for heating
• H = Annual heating load in BTUH
• e = efficiency of the heating unit in decimal fraction (coefficient of performance in case of a heat pump)
• FHC = fuel heat content Btu per gal or kW
FUEL CONSUMPTION BY COOLING UNITS
The amount of fuel required for annual cooling can be calculated us ing the formula:
F = C / (SEER x 1000)
Where
• F = Electrical energy required in kWh per year for cooling
• C = Annual cooling load in Btu
• SEER = Seasonal Energy Efficiency Ratio of the cooling unit (Quantity of heat removed in BTUH for an input of 1 watt)
Fuel Cost
USD ($) = F x cost per unit (unit being gallon, mcf, kW, etc.)
