Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Chapter 11, Problem 8RQ
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Consider a flat-plate solar collector placed horizontally on the flat roof of a house. The collector is 1.3 m wide and 2.8 m
long, and the average temperature of the exposed surface of the collector is 42°C.
The properties of air at 1 atm and the film temperature are k=0.02551 W/m-°C, v = 1.562 × 10-5 m²/s, Pr = 0.7286, and ẞ=
0.003356 K-1
Determine the rate of heat loss from the collector by natural convection during a calm day when the ambient air temperature is 8°C.
The rate of heat loss from the collector by natural convection is
W.
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Chapter 11 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 11 - What does "calibrating an instrument" mean?Ch. 11 - Three reference points that may be used to check...Ch. 11 - Prob. 3RQCh. 11 - Temperature-measuring instruments may be designed...Ch. 11 - Glass stem thermometers are being replaced by...Ch. 11 - True or False: To check the temperature leads of...Ch. 11 - Accuracy of a thermometer is more important in the...Ch. 11 - Prob. 8RQCh. 11 - Prob. 9RQCh. 11 - What should a gauge manifold reading indicate when...
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