Find the specific heat transfer from the cold space
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What is the mass flow rate of the R-134a, and what is the low-temperature heat transfer rate? What is the mass flow rate of air at 10oC?
After the compressor, the temperature is measured to be 60oC. Find the actual compressor work and the actual cycle COP.
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A heat pump uses R410a with a high pressure of 3000 kPa and an evaporator operating at -10oC. Find the COP and the temperature at which it can deliver energy.
Find the specific heat transfer from the cold space and that to the hot space, the COP, and the isentropic efficiency of the compressor.
A heat pump for heat upgrade uses ammonia with a low temperature. If it receives 1 MW of shaft work, what is the rate of heat transfer at the high temperature?
Find the high temperature, the condensing temperature and the COP if it is used in a standard cycle with high and low pressures of 6 MPa and 3 MPa respectively.
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A new air conditioner using R-410a is used in heat pump mode. Find the COP, the heating rate, and the rate of entropy generation for the heat pump.
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