Two panels of different materials are spaced 6m apart and at a 30-degree angle. The top panel is 2m x 1m. The top panel has an emissivity of 0.6. The bottom panel is made of a translucent material and has an absorptivity of 0.2 and a reflectivity of 0.5. a) If the top panel is kept at 100oC and the bottom panel at −50oC, how much radiation is the top panel emitting to the bottom panel? b) How much of that radiation passes through the bottom panel? c) What is the irradiation power, G?

Two panels of different materials are spaced 6m apart and at a 30-degree angle. The top panel is 2m x 1m. The top panel has an emissivity of 0.6. The bottom panel is made of a translucent material and has an absorptivity of 0.2 and a reflectivity of 0.5. a) If the top panel is kept at 100oC and the bottom panel at −50oC, how much radiation is the top panel emitting to the bottom panel? b) How much of that radiation passes through the bottom panel? c) What is the irradiation power, G?

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

Chapter42: Heat Gains And Heat Losses In Structures

Section: Chapter Questions

Problem 16RQ: Which of the following is(are) true regarding the solar gain on windows? A. The solar gain due to...

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