What is the range of the heat transfer coefficient for air condensation at a relative humidity of 100%?

2018-09-18View Original

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The air temperature is reduced from 55°C to 45°C through cooling with cold water; since the air contains water vapor, a large amount of condensation occurs during cooling. How should the heat transfer coefficient on the air side be calculated? Or what range? Is it necessary to break the membrane when using finned tubes? Based on the fin area, the heat transfer coefficient for pure air is 30-40 W/m2K. However, over 90% of the heat transfer power is due to condensation heat transfer, resulting in a large amount of condensation. So how high will the heat transfer coefficient increase? Please ask an expert for help.

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What is the range of the heat transfer coefficient for air condensation at a relative humidity of 100%?

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