Help calculate how much heat exchange area is needed? ?
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Help calculate how much heat exchange area is needed? ? Air: Air flow rate of 3000 m3/h, temperature at room temperature (taken as 10°C); the temperature is to be increased to 40°C. The steam used is saturated steam at 0.2 MPA. Could someone help calculate the required heat exchange area? It would be great if the calculation process and the underlying data could also be provided. Thank you!
:L:L This is way too simple; I can’t figure it out
Sincerity doesn’t count – the conditions you’ve given are too simple
What other conditions are needed? ? ?
Under such conditions, only the heat load can be calculated. The specific heat exchange area depends on factors such as the heat exchange method and the material used; it is generally calculated by the manufacturer of the heat exchanger equipment. But now there are manuals, software, and things like that that can be used for estimation. Once the heat exchanger is available, the steam consumption can be calculated based on the thermal efficiency and heat load.
It is best to use a dedicated air heater. The heat transfer coefficient on the steam side is high, while that on the air side is low; therefore, it is necessary to enhance heat transfer on the air side by using finned tubes； Steam flows inside the tube, while air flows outside the tube