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heat transfer questions...

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Heat transfer questions
3· The inside temperature of a 3 m by 10 m wall is 140 °C, wall is 2.5 cm thick and has a thermal conductivity of 1.4 w/m °C. The outside air temperature is 40 C. What does the convective heat transfer coefficient need to be to keep the outer wall temperature at 44°C

3· The inside temperature of a 3 m by 10 m wall is 140 °C, wall is 2.5 cm thick and has a thermal conductivity of 1.4 w/m °C. The outside air temperature is 40 C. What does the convective heat transfer coefficient need to be to keep the outer wall temperature at 44°C

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