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Heat Pumps and Air Conditioning Basic Theory

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Heat Pumps and Air Conditioning Basic Theory ( heat-pumps-and-air-conditioning-basic-theory )

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• Carnot engine efficiency= W/QH=1‐TL/TH=(TH‐TL)/TH= 1‐ (0+273.15)/(60+273.15)= 0.18 QH EW • Heat pump COP= QH/W= 1/(.18)=5.6 QL Carnot Heat Pump • Suppose we want to transfer heat from outside (0 C) to an air heating TH coil at 60 C • If we needed to heat only to 40C, the COP would be (40+273.15)/(273.15)=7.8 TL

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Heat Pumps and Air Conditioning Basic Theory

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