Determine the rate of heat loss from the steam pipe

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Reference no: EM131277145

A 200-ft-long section of a steam pipe whose outer diameter is 4 in passes through an open space at 50°F. The average temperature of the outer surface of the pipe is measured to be 280°F, and the average heat transfer coefficient on that surface is determined to be 6 Btu/h · ft^2· °F. Determine

(a) the rate of heat loss from the steam pipe and

(b) the annual cost of this energy loss if steam is generated in a natural gas furnace having an efficiency of 86 percent, and the price of natural gas is $1.10/therm (1 therm = 100,000 Btu).

Reference no: EM131277145

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