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Unformatted text preview: 16.25. Set Up: For a Carnot refrigerator, Also, where is the heat that must be removed from the water to cool it to and freeze it. For water, and where is the heat expelled to the room. Solve: (a) (b) must be removed from the water to convert it to ice at (c) (d) Reflect: More energy is expelled to the room than is removed from the water. K is larger when is close to less energy must be expelled to move heat energy through a smaller temperature difference. 16.26. Set Up: For an isothermal process of an ideal gas, For an adiabatic process of an ideal gas, The Carnot cycle is sketched in Figure 16.11 in Chapter 16. Solve: and is positive. and is negative. For the adiabatic processes, and Dividing one equation by the other gives and This says so 16.27. Set Up: For an engine, W and are positive and is negative. For a refrigerator, is positive and W and are negative. A heat pump air conditioner takes in heat at a cool place and expels heat into a warm place. A heat pump house heater takes in heat at a cool place and expels heat into a warm place. For both types of heat pumps,heat pump house heater takes in heat at a cool place and expels heat into a warm place....
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This note was uploaded on 03/06/2009 for the course PHYS 114 taught by Professor Shoberg during the Spring '07 term at Pittsburg State Uiversity.
- Spring '07