A 20 mm diameter copper pipe is used to carry heated water, the external surface of the pipe is subjected to a convective heat transfer coefficient of 6 W/m^2 K, Calculate the following: (i) The heat loss by convection per meter length of the pipe when the external surface temperature is 80oC and the surrounding are at 20 C. (ii) Assume black body radiation what is the heat loss by radiation (iii) Conclude your recommendation after calculation of heat loss by convection and radiation.

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