Seeking advice on the overall heat transfer coefficient of heat exchangers
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Recently, I simulated a heat exchanger in which steam was used to heat heat transfer oil, and it was found that the overall heat transfer coefficient was higher when the steam flowed through the tube side rather than the shell side. What is the principle behind this? Is it the steam in the tube side that results in a high heat transfer coefficient?
It is because the heat transfer coefficient when the heat transfer oil flows in the shell side is greater than that when it flows in the tube side, that the overall heat transfer coefficient increases.
Your simulated data is hard to believe; you should conduct more actual measurements. Logically, this overall heat transfer coefficient should be determined by the side with the heat transfer oil, so the result should be the opposite. Moreover, whether from an economic perspective or from the standpoint of heat transfer, it’s a bit illogical to use steam to heat thermal oil. I hope this can help you.
The overall heat transfer coefficient is influenced by the heat transfer oil; the flow of this oil in the shell side facilitates the formation of turbulence, thereby increasing the heat transfer coefficient.
The 4th floor is the correct answer; for the 3rd floor, I would say that our company uses steam to heat the heat transfer oil
The 4th floor is the correct answer; for the 3rd floor, I would say that our company uses steam to heat the heat transfer oil