• Consider a thin-walled 2 -cm diameter pipe through which water flows at a mass flow rate of 0.2 kg/s. The inlet temperature of water is Tmi= 25 oC. The pipe is located outdoors in an environment where the air temperature is -10 ^oC and the convective heat transfer coefficient is ho = 20 W/m² -K. To reduce heat loss, the pipe is insulated with a 1 cm-thick insulation of kins = 0.1 W/m-K. The length of the pipe is L= 200 m.
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• a. Determine the exit temperature of water.
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• b. Determine the heat loss to the environment.