A frictionless piston of diameter D p = 50 mm, thickness = 10 mm, and density

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A frictionless piston of diameter D= 50 mm, thickness δ = 10 mm, and density p = 8000 kg/mis placed in a vertical cylinder of total length L = 100 mm. The cylinder is bored into a material of very low thermal conductivity, and a mass of air M= 75 X 10-6 kg is enclosed in the volume beneath the cylinder. The surroundings re at Tsur = 300 K while the bottom surface of the cylinder is maintained at T1. The emissivity of all the surfaces is ε = 0.3.

What is the distance between the bottom of the piston and the bottom of the cylinder, Lb, for T= 300, 450, and 600 K? What is the piston temperature?

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Fundamentals Of Heat And Mass Transfer

ISBN: 9780470501979

7th Edition

Authors: Theodore L. Bergman, Adrienne S. Lavine, Frank P. Incropera, David P. DeWitt

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