【Weekly Topic】【HVAC Version 20160406】
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Participation reward: 2 Wealth. Reward for correct answer: 9 wealth. The heating coefficient of the heat pump is 5; when used as a refrigerator, its cooling coefficient is ( ). A. 3 B, 4 C. 5 D. 6 【HaiChuan Thanksgiving】--Production Region 【Production and Management Region】is seeking moderators and technical discussants to join us
B, 4 ~~~~~~~~~~
The heating coefficient of the heat pump is 5; when used as a refrigerator, its cooling coefficient is (B). A. 3 B, 4 C. 5 D. 6
The last edit to this post was made by ydm4585 on 2016-4-6 at 14:05. The coefficient of heat supply for heat pumps refers to the amount of heat that can be generated per unit of power consumed. (Note: This is the exact opposite of the efficiency of a heat engine, where η = W/q1; in one case work is produced from heat, while in the other case heat is extracted to produce work.) The working substance releases heat q1 to the heat source and absorbs heat q2 from the cold source, with the heat source having a temperature of T1 and the cold source having a temperature of T2. Input work: W = q1 – q2. The heating coefficient λ = q1/W = q1/(q1 – q2) = T1/(T1 – T2). The cooling coefficient ω = T2/(T1 – T2); therefore, ω = λ – 1 = 5 – 1 = 4. Thank you to the original poster; I almost forgot again: L