A Carnot engine performs work at the rate of 470 kW while using 650 kcal of heat per second. If the temperature of the heat source is 590°C, at what temperature is the waste heat exhausted?
The low temperature of a freezer cooling coil is -18°C and the discharge temperature is 34°C. What is the maximum theoretical coefficient of performance?
An ideal refrigerator-freezer operates with a COP = 5.0 in a 26°C room. What is the temperature inside the freezer?
What volume of water at 0°C can a freezer make into ice cubes in 1.4 hours, if the coefficient of performance of the cooling unit is 8.0 and the power input is 1.0 kilowatt?