Two parallel pipes are buried very deep in the earth at a location where they are in

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Two parallel pipes are buried very deep in the earth at a location where they are in contact with a rock formation having k = 3.5 W/m· ºC. One pipe has a diameter of 20 cm and carries a hot fluid at 120ºC while the other pipe has a diameter of 40 cm and carries a cooler fluid at 20ºC. The distance between centers of the pipes is 1.0 m and both pipes are very long in respect to their diameters and spacing. Calculate the conduction heat transfer between the two pipes per unit length of pipe. Express as W/m length.
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Heat Transfer

ISBN: 978-0073529363

10th edition

Authors: Jack Holman

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