Question: 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

  • 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.

  • a. Determine the exit temperature of water.

  • b. Determine the heat loss to the environment.

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To solve this problem well use the energy balance equation for the pipe The rate of heat transfer from the water to the environment must equal the rat... View full answer

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