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If the surrounding air temperature is 350C, determine the heat loss from an unlagged horizontal stem pipe (emissivity =0.9 ) with an outside diameter of

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If the surrounding air temperature is 350C, determine the heat loss from an unlagged horizontal stem pipe (emissivity =0.9 ) with an outside diameter of 40mm and at a temperature of 465C, by: 1. Radiation (10) 2. Convection

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