Let us use a heat pump to cook dinner! You set up a heat pump that has 40 % of its theoretical maximum COP, and you want to use heat from the kitchen at 24°C to supply 600 W of heat energy for boiling soup. Assume the soup is mostly water and that you want to heat it to 100°C. (a) How much electrical energy must the heat pump use? The heat pump uses _______J of electrical energy. (b) How much better is this than simply using an electric hot plate to supply the 600 W of heat energy? Using a heat pump is _____ times better than using an electric hot plate.
Let us use a heat pump to cook dinner! You set up a heat pump that has 40 % of its theoretical maximum COP, and you want to use heat from the kitchen at 24°C to supply 600 W of heat energy for boiling soup. Assume the soup is mostly water and that you want to heat it to 100°C. (a) How much electrical energy must the heat pump use? The heat pump uses _______J of electrical energy. (b) How much better is this than simply using an electric hot plate to supply the 600 W of heat energy? Using a heat pump is _____ times better than using an electric hot plate.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Let us use a heat pump to cook dinner! You set up a heat pump that has 40 % of its theoretical maximum COP, and you want to use heat from the kitchen at 24°C to supply 600 W of heat energy for boiling soup. Assume the soup is mostly water and that you want to heat it to 100°C.
(a) How much electrical energy must the heat pump use?
The heat pump uses _______J of electrical energy.
(b) How much better is this than simply using an electric hot plate to supply the 600 W of heat energy?
Using a heat pump is _____ times better than using an electric hot plate.
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