By removing energy by heat transfer from a room, a window air conditioner maintains the room at 20°C on a day when the outside temperature is 28°C. (a) Determine, in kW per kW of cooling, the minimum theoretical power required by the air conditioner. (b) To achieve required rates of heat transfer with practical sized units, air conditioners typically receive energy by heat transfer at a temperature below that of the room being cooled and discharge energy by heat transfer at a temperature above that of the surroundings. Consider the effect of this by determining the minimum theoretical power, in kW per kW of cooling, required when TC = 16°C and TH = 32°C, and determine the ratio of the power for part (b) to the power for part (a).
By removing energy by heat transfer from a room, a window air conditioner maintains the room at 20°C on a day when the outside temperature is 28°C. (a) Determine, in kW per kW of cooling, the minimum theoretical power required by the air conditioner. (b) To achieve required rates of heat transfer with practical sized units, air conditioners typically receive energy by heat transfer at a temperature below that of the room being cooled and discharge energy by heat transfer at a temperature above that of the surroundings. Consider the effect of this by determining the minimum theoretical power, in kW per kW of cooling, required when TC = 16°C and TH = 32°C, and determine the ratio of the power for part (b) to the power for part (a).
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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By removing energy by heat transfer from a room, a window air conditioner maintains the room at 20°C on a day when the outside temperature is 28°C.
(a) Determine, in kW per kW of cooling, the minimum theoretical power required by the air conditioner.
(b) To achieve required rates of heat transfer with practical sized units, air conditioners typically receive energy by heat transfer at a temperature below that of the room being cooled and discharge energy by heat transfer at a temperature above that of the surroundings. Consider the effect of this by determining the minimum theoretical power, in kW per kW of cooling, required when TC = 16°C and TH = 32°C, and determine the ratio of the power for part (b) to the power for part (a).
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