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A new material has a measured thermal conductivity k of 200 BTU-in/hr-ft2 -°F. Is this material...

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Mechanical Engineering

A new material has a measured thermal conductivity k of 200BTU-in/hr-ft2 -°F. Is this material a thermal insulator or aconductor? Calculate the R and U values for a block of thismaterial that is 3 inches thick. Now sandwich this block ofmaterial between two sheets of R-0.8 fiberboard. What is the neweffective U value?

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3.8 Ratings (454 Votes)
A thermal insulator is a material which provides a largeresistance to heat flow through it Consider a well known thermalinsulator woodOak wood has a thermal    See Answer
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