The typical practical value for a heat pump is in the range 2 - 4.
The Energy Efficiency Ratio - EER - is a measure of the cooling efficiency of a heat pump.
EER can be expressed as
EER = hc / Pw (2)
EER = Energy Efficiency Rating
hc = cooling heat (Btu/h)
Pw = electrical power (W)
An air conditioner or heat pump in cooling mode draws 1000 W of electric power to produce 10000 Btu/h of cooling. The EER can be calculated as
EER = (10000 Btu/h) / (1000 W)
The Heating Season Performance Factor - HSPF - is a measure of the overall heating efficiency of a heat pump during the season.
HSPF = hs / 1000 Pws (3)
hs = heat produced during the season (Btu)
Pws = electrical power consumed during the season (kWh)
The HSPF can be regarded as an "average" COP for an entire heating season. It is common to compare BTUs of heat output to watts of electrical energy input. HSPF of 6.8 can be compared with an average COP of 2. A HSPF in the range of 5-7 is acceptable.
For a heat pump deliver 120,000,000 Btu during the season when consuming 15,000 kWh the HSPF can be calculated as
HSPF = (120000000 Btu) / (1000 (15000 kWh))
Seasonal Energy Efficiency Ratio is a measure of the seasonal cooling efficiency of a heat pump or a consumer central air conditioning system.
The SEER should be at least 13 to be sold in the United States. SEER above 20 is a very efficient system.
Air Conditioning systems - heating, cooling and dehumidification of indoor air for thermal comfort.
Heating systems - capacity and design of boilers, pipelines, heat exchangers, expansion systems and more.
Calculating chiller and cooling tower refrigeration loads - in tons.
Performance and efficiency terminology related to heat pumps and air condition systems.
Convert between cooling load units like kW/ton, COP and EER.
Efficiency is the ratio useful energy output to energy input.
Steam radiators and steam convectors - heating capacities and temperature coefficients.
Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!
We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.
Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.