2.71 WP A heat pump cycle delivers energy by heat transfer to a dwelling at a rate of 11.7 kW. The coefficient of performance of the cycle is 2.8. a. Determine the power input to the cycle, in kW. b. Evaluating electricity at $0.10 per kWh, determine the cost of electricity during the heating season when the heat pump op- erates for 1800 hours.

2.71 WP A heat pump cycle delivers energy by heat transfer to a dwelling at a rate of 11.7 kW. The coefficient of performance of the cycle is 2.8. a. Determine the power input to the cycle, in kW. b. Evaluating electricity at $0.10 per kWh, determine the cost of electricity during the heating season when the heat pump op- erates for 1800 hours.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.

Question

2.71 WP A heat pump cycle delivers energy by heat transfer to a
dwelling at a rate of 11.7 kW. The coefficient of performance of the
cycle is 2.8.
a. Determine the power input to the cycle, in kW.
b. Evaluating electricity at $0.10 per kWh, determine the cost
of electricity during the heating season when the heat pump op-
erates for 1800 hours.

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