Assume that a human forearm may be approximated by a cylinder 4 in. in diameter and 1

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Assume that a human forearm may be approximated by a cylinder 4 in. in diameter and 1 ft long. The arm is exposed to a dry-air environmental temperature of 115oF in a 10-mi/h breeze on the desert and receives a radiant heat flux from the sun of 350 Btu/h · ft2 of view area (view area for the cylinder = Ld). If the arm is perspiring so that it is covered with a thin layer of water, estimate the arm surface temperature. Neglect internal heat generation of the arm. Assume an emissivity of unity for the water film.
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Heat Transfer

ISBN: 978-0073529363

10th edition

Authors: Jack Holman

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