Connecting the statistical and macroscopic approaches to irreversible processes
Home thermodynamic pump A heat pump collects thermal energy from outside air at 5 °C and delivers it into a house at 40 °C. (a) Determine the maximum coefficient of performance (the maximum coefficient is determined in the same way as for a thermodynamic engine). (b) If the motor of the heating pump uses 1000 J of electrical energy to do work during a certain time interval, how much thermal energy is delivered into the house through heating, assuming the heating pump works at the maximum coefficient of performance? (c) Repeat (b) for a coefficient of performance of 2.0.
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