BTU
Furnace output unit
BTU stands for British thermal unit, a measure of heat energy.
One BTU is the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.
The unit appears most often in specifications for heating and cooling equipment: a 12,000-BTU air conditioner, a furnace rated at 80,000 BTUs.
Despite the name, BTUs are more common in American than British usage.
Enclosed heat-producing structure
- boilerWater-heating vessel
- radiatorHeat transfer device
- heat outputEnergy emitted as warmth
- fireplaceIndoor structure for burning
space heater · central heating · heat pump · burner · pilot light · thermostat · warmth · blower
Mechanical cooling system
- refrigerationHeat removal for preservation
- chillerRefrigeration unit or horror
- AC unitClimate control device
- window unitFrame-mounted cooling appliance
central air · compressor · evaporator · condenser · tonnage · coolant · dehumidifier · climate control
Thermodynamic total heat quantity
- heat capacityEnergy to raise temperature
- specific heatEnergy needed per degree
- latent heatPhase transition thermal energy
- heat transferMovement of thermal energy
calorimetry · heat absorption · exothermic · endothermic · heat exchange · heat flow · temperature change
Enclosed campus lawn
- jouleSI energy quantity
- calorieUnit of thermal energy
- kilowatt-hourUnit measuring electrical consumption
- energy ratingAppliance consumption classification
megajoule · kilocalorie · heat measurement · foot-pound · energy conversion
furnace
Enclosed heat-producing structure
- boilerWater-heating vessel
- radiatorHeat transfer device
- heat outputEnergy emitted as warmth
fireplace · space heater · central heating · heat pump · burner · pilot light · thermostat · warmth · blower · convection
air conditioner
Mechanical cooling system
- refrigerationHeat removal for preservation
- chillerRefrigeration unit or horror
- AC unitClimate control device
window unit · central air · compressor · evaporator · condenser · tonnage · coolant · dehumidifier · climate control · refrigerant
enthalpy
Thermodynamic total heat quantity
- heat capacityEnergy to raise temperature
- specific heatEnergy needed per degree
- latent heatPhase transition thermal energy
heat transfer · calorimetry · heat absorption · exothermic · endothermic · heat exchange · heat flow · temperature change
quad
Enclosed campus lawn
- jouleSI energy quantity
- calorieUnit of thermal energy
- kilowatt-hourUnit measuring electrical consumption
energy rating · megajoule · kilocalorie · heat measurement · foot-pound · energy conversion
- HVACair conditioner, furnaces, furnace, ductwork, central air
- energyelectricity, power, oil, fuel, gas
- abbreviationsMr, Mrs, Ms, Dr, Jr
- measurementscales, gauging, balance, metering, gram
- heatheat transfer, heatwave, radiation, convection, insulators
- unitsunit, angstrom, yard, meter, base units
BTUjoule
SI energy quantity
kilojoule · calorie · kilocalorie · watt-hour · kilowatt-hour