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
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter1: Basic Modes Of Heat Transfer
Section: Chapter Questions
Problem 1.19P: 1.19 A cryogenic fluid is stored in a 0.3-m-diameter spherical container is still air. If the...
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