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1. Consider a flat plate solar collector placed horizontally on the flat roof of a house. The collector is 5 ft wide Ty50°F sky and 15 ft long, and the average temperature of the Solar collector 70°F exposed surface of the collector is 100'F. The emissivity of the exposed surface of the collector is 0.9. Determine the rate of heat loss from the collector by convection and radiation during a calm day when the ambient air temperature is 70°F and the effective sky temperature for radiation exchange is 50°F. Take the convection heat transfer coefficient on the exposed surface to be 2.5 Btu/h ft2. F

1. Consider a flat plate solar collector placed horizontally on the flat roof of a house. The collector is 5 ft wide Ty50°F sky and 15 ft long, and the average temperature of the Solar collector 70°F exposed surface of the collector is 100'F. The emissivity of the exposed surface of the collector is 0.9. Determine the rate of heat loss from the collector by convection and radiation during a calm day when the ambient air temperature is 70°F and the effective sky temperature for radiation exchange is 50°F. Take the convection heat transfer coefficient on the exposed surface to be 2.5 Btu/h ft2. F

Elements Of Electromagnetics
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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1. Consider a flat plate solar collector placed horizontally on the flat roof of a house. The collector is 5 ft wide Ty50°F sky and 15 ft long, and the average temperature of the Solar collector 70°F exposed surface of the collector is 100'F. The emissivity of the exposed surface of the collector is 0.9. Determine the rate of heat loss from the collector by convection and radiation during a calm day when the ambient air temperature is 70°F and the effective sky temperature for radiation exchange is 50°F. Take the convection heat transfer coefficient on the exposed surface to be 2.5 Btu/h ft2. F
Transcribed Image Text:1. Consider a flat plate solar collector placed horizontally on the flat roof of a house. The collector is 5 ft wide Ty50°F sky and 15 ft long, and the average temperature of the Solar collector 70°F exposed surface of the collector is 100'F. The emissivity of the exposed surface of the collector is 0.9. Determine the rate of heat loss from the collector by convection and radiation during a calm day when the ambient air temperature is 70°F and the effective sky temperature for radiation exchange is 50°F. Take the convection heat transfer coefficient on the exposed surface to be 2.5 Btu/h ft2. F
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