Calculation of the flow rate in the tube side of a heat exchanger
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I’m looking for a method to calculate the flow rate in the tube side of a heat exchanger. The manual states that a specific range of values should be used as a reference; but how should one calculate the actual value?
In actual operation, as the load changes, the flow rate inside the equipment also changes!
The flow rate is not constant; it can meet various operating conditions
Under normal circumstances, are there any reference formulas?
I think it should be calculated based on the total cross-sectional area of the heat exchange tubes and the total flow rate. This is just my opinion; please feel free to correct me
This post was last edited by Sight_QOEH on 2019-3-13 at 19:38. “Handbook of Chemical Engineering Machinery: Heat Exchangers” – Selection of flow rate: The flow rate of the fluid not only directly affects the convective heat transfer coefficient but is also related to the fouling thermal resistance, thereby influencing the overall heat transfer coefficient. Especially for fluids containing particles prone to deposition such as sediment, too low flow rates can lead to pipeline blockages, severely affecting the operation of the equipment. However, increasing the flow rate will significantly increase fluid resistance; therefore, it is very important to select an appropriate flow rate.
Volume flow rate/tube cross-sectional area. But in reality, if the liquid flow rate is low, it’s hard to say whether it will all flow through the pipe or not