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# Help mee!! Q1. Heat conduction & convection (38 pt). Hot water flows in a steel pipe...

## Question

###### Help mee!! Q1. Heat conduction & convection (38 pt). Hot water flows in a steel pipe...
Help mee!! Q1. Heat conduction & convection (38 pt). Hot water flows in a steel pipe of 0.1 m inside diameter at a flow rate of 0.2 m/h and at an average temperature of 70 °C. The pipe length is 2.5 m and the inside pipe wall temperature is 60 °C Assume that the pipe thickness is small and the steel heat conductivity is high enough so that the thermal resistance of the pipe wall is negligible. Calculate: (a) The convective heat transfer coefficient on the inside pipe wall; (b) The heat loss from the pipe to the cold air, if the outside ambient temperature is 20 °C and the outside convective heat transfer coefficient is 17 W/(m2K). Assume steady-state conditions.

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