This " equivalent ton " is defined as the heat rejection in cooling 3 US gallons / minute ( 1, 500 pound / hour ) of water 10 �F ( 6 �C ), which amounts to 15, 000 BTU / hour, assuming a chiller coefficient of performance ( COP ) of 4.0.
32.
In electrically-powered heat pumps, the heat transferred can be three or four times larger than the electrical power consumed, giving the system a coefficient of performance ( COP ) of 3 or 4, as opposed to a COP of 1 for a conventional electrical resistance heater, in which all heat is produced from input electrical energy.
33.
Geothermal pump systems reach fairly high coefficient of performance ( CoP ), 3 to 6, on the coldest of winter nights, compared to 1.75 2.5 for air-source heat pumps on cool days . Ground source heat pumps ( GSHPs ) are among the most energy efficient technologies for providing HVAC and water heating.
34.
ISO 13602-1 describes a means of to establish relations between inputs and outputs ( net energy ) and thus to facilitate certification, labelling, comparable characterizations, coefficient of performance, energy resource planning, environmental impact assessments, meaningful energy statistics and forecasting of the direct natural energy resource or energyware inputs, technical energy system investments and the performed and expected future energy service outputs.
35.
Also if you are using a heat pump then even if it is really the case, you're still going to usually spend more energy then you would have otherwise because of the better coefficient of performance for the heat generated ( may be a bit confusing in the context because not all of the energy input is going to make heat but even that which is, can basically be considered akin to an electrical heater ).
36.
BEET-IT solicited projects regarding energy efficient cooling technologies and air conditioners ( AC ) for buildings to save energy and reduce GHG emissions in the following areas : 1 ) cooling systems that use refrigerants with low global warming potential; 2 ) energy efficient air conditioning ( AC ) systems for warm and humid climates with an increased coefficient of performance ( COP ); and 3 ) vapor compression AC systems for hot climates for re-circulating air loads with an increased COP.
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