(b) How much heat in kilocalories would it pump into the warm environment if 3.60 x 107 J of work (10.0 kw · h) is put into it? 4.287e4 V kcal (c) Assume the cost of this work input is 10c/kw · h. Also assume that the cost of direct production of heat by burning natural gas is 81.0c per therm (a common unit of energy for natural gas), where equals 1.055 x 10° J. Compare the cost of producing the same amount of heat by each method. cost of heat pump cost of natural gas 0.692
(b) How much heat in kilocalories would it pump into the warm environment if 3.60 x 107 J of work (10.0 kw · h) is put into it? 4.287e4 V kcal (c) Assume the cost of this work input is 10c/kw · h. Also assume that the cost of direct production of heat by burning natural gas is 81.0c per therm (a common unit of energy for natural gas), where equals 1.055 x 10° J. Compare the cost of producing the same amount of heat by each method. cost of heat pump cost of natural gas 0.692
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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![(a) What is the best coefficient of performance for a heat pump that has a hot reservoir temperature of 53.3°C and a cold reservoir temperature of -12.2°C?
4.982
(b) How much heat in kilocalories would it pump into the warm environment if 3.60 x 107 ) of work (10.0 kw · h) is put into it?
4.287e4
v kcal
(c) Assume the cost of this work input is 10c/kW · h. Also assume that the cost of direct production of heat by burning natural gas is 81.0c per therm (a common unit of energy for natural gas), where a therm
equals 1.055 x 10° J. Compare the cost of producing the same amount of heat by each method.
cost of heat pump
= 0,692
cost of natural gas
Check unit conversions and your calculations.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6ac9d050-1fff-4e75-b553-243d63aa5f64%2F5dcaab60-7543-48dd-bab9-bab8701f07f3%2Fhdzk1ds_processed.png&w=3840&q=75)
Transcribed Image Text:(a) What is the best coefficient of performance for a heat pump that has a hot reservoir temperature of 53.3°C and a cold reservoir temperature of -12.2°C?
4.982
(b) How much heat in kilocalories would it pump into the warm environment if 3.60 x 107 ) of work (10.0 kw · h) is put into it?
4.287e4
v kcal
(c) Assume the cost of this work input is 10c/kW · h. Also assume that the cost of direct production of heat by burning natural gas is 81.0c per therm (a common unit of energy for natural gas), where a therm
equals 1.055 x 10° J. Compare the cost of producing the same amount of heat by each method.
cost of heat pump
= 0,692
cost of natural gas
Check unit conversions and your calculations.
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