4.20 How much work must be done in order to cool the air in an otherwise empty room of dimensions 5.0 m x 5.0 m x 3.0 m from 303 K to 295 K when the ambient temperature is (a) 293 K (b) 303 K? Take specific heat of air to be 29 kJ/kmolK and density to be 1.2 kg/m'.

Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter1: Heat, Temperature, And Pressure
Section: Chapter Questions
Problem 6RQ: One British thermal unit will raise the temperature of _____ 1b of water _____F.
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4.20 How much work must be done in order to cool the air in an otherwise empty room of
dimensions 5.0 m x 5.0 m x 3.0 m from 303 K to 295 K when the ambient temperature
is (a) 293 K (b) 303 K? Take specific heat of air to be 29 kJ/kmolK and density to be
1.2 kg/m'.
Transcribed Image Text:4.20 How much work must be done in order to cool the air in an otherwise empty room of dimensions 5.0 m x 5.0 m x 3.0 m from 303 K to 295 K when the ambient temperature is (a) 293 K (b) 303 K? Take specific heat of air to be 29 kJ/kmolK and density to be 1.2 kg/m'.
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