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The coefficient of performance or COP (sometimes CP or CoP) of a heat pump, refrigerator or air conditioning system is a ratio of useful heating or cooling provided to work (energy) required. [1] [2] Higher COPs equate to higher efficiency, lower energy (power) consumption and thus lower operating costs. The COP is used in thermodynamics.
Typical EER for residential central cooling units = 0.875 × SEER. SEER is a higher value than EER for the same equipment. [1] A more detailed method for converting SEER to EER uses this formula: EER = −0.02 × SEER² + 1.12 × SEER [2] Note that this method is used for benchmark modeling only and is not appropriate for all climate conditions ...
The formula for ESEER can then be presented as follows: ESEER = (EER@100% load × 0.03) + (EER@75% load × 0.33) + (EER@50% load × 0.41) + (EER@25% load × 0.23) [ 1 ] Eurovent publishes EER and ESEER values in its Directory of Certified Products together with cooling capacity and power input for standard conditions at full load for a wide ...
Example: For a heat pump delivering 120,000,000 BTU during the season, when consuming 15,000 kWh, the HSPF can be calculated as : HSPF = 120000000 (BTU) / (1000) / 15000 (kWh) HSPF = 8. The HSPF is related to the non-dimensional Coefficient of Performance (COP) for a heat pump, which measures the ratio of heat delivered to work done by the ...
SEER, EER, and COP. Next, regarding the relationship between the SEER, the EER, and the COP (coefficient of performance), the SEER and the EER are both ratios (and ratings) for air conditioning systems. In contrast, the COP is a ratio for heat pumps and is not specifically defined by some industry standard as being a rating.
For example, some products contained the phrase “rich in protein,” and others listed the amount of protein in the product. Researchers found that 13% of the examined products, or 561 items ...
“As an example, a serving of alcohol-- 12 ounces of light beer, 5 ounces of wine, or 1.5 ounces of liquor-- is generally between 100 to 150 calories.” Ahead, read on to learn tips for making ...
GAO—Government Accountability Office (General Accounting Office) (US) (government) GATT—General Agreement on Tariffs and Trade (government) GDP—gross domestic product (economics) GEF—Global Environmental Facility (environment) Genco—Any company doing electricity generation (US) (electricity) GFN—Global Footprint Network