CONVERSIONS Term
Description
Conversion
BHP kWh
Boiler Horsepower
1 BHP = 33,476 BTUh; 1 BHP = 33.476 MBh
Kilowatt-hours Horsepower
1 kWh = 3,413 BTU 1 HP = 0.746 kW kW/ton = 12 / EER
HP
kW/ton kW/ton
Kilowatt per ton of cooling Kilowatt per ton of cooling Coefficient of Performance Coefficient of Performance Energy Efficiency Ratio Energy Efficiency Ratio
kW/ton = 12 / (COP x 3.413)
COP COP EER EER
COP = EER / 3.413
COP = 12 / (kW/ton x 3.413)
EER = 12 / kW/ton EER = COP x 3.413 1 Ton = 12,000 BTUh 1 MBh = 1,000 BTUh
Ton
Unit of capacity for cooling equipment
MBh
1,000 BTUh 100,000 BTU
Therm
1 Therm = 100,000 BTU (or 100 CF or 0.1 MCF) 1 CF = 1 cubic foot (= approximately 1,000 BTU)
CF
Quantity of natural gas Quantity of natural gas Quantity of natural gas
CCF MCF
1 CCF = 100 cubic feet
1 MCF = 1,000 cubic feet (or 10 CCF or 10 Therms)
SOURCES Terms defined in the Glossary were referenced from the following sources: ari.org www1.eere.energy.gov focusonenergy.com energy.gov energystar.gov
www1.eere.energy.gov engineeringtoolbox.com energy.ca.gov lennox.com/resources/glossary.asp
ashrae.org/resources--publications/free-resources/ashrae-terminology energy.gov/eere/energybasics/articles/glossary-energy-related-terms
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