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 C One pipe has a diameter of 20 cm and carries a hot fluid at 120C while the other pipe has a diameter of 40 cm and carries a cooler fluid at 20C 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

Question: Two parallel pipes are buried very deep in the earth at a location where they are in contact with a rock formation having k =

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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