Issues with the design parameters of heat exchangers
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In a heat exchanger, the hot fluid is water at 85°C, which is cooled to 65°C, while the cold fluid is water at 32°C, which is heated to 40°C. Here comes the problem. How can we ensure that the hot medium does not drop below 65°C and that the cold medium does not rise above 40°C? If no additional control measures are implemented. Is it possible to rely solely on accurately determining the heat exchange area of the heat exchanger? If that’s the case, it becomes difficult to control the operating parameters when the heat exchange area of the heat exchangers designed by our company is made too large. What do everyone think about this issue? Please give me some advice!
It is difficult to calculate the heat exchange area of a heat exchanger with precision; even when calculation software is used, these calculations are often based on empirical equations and test reports, which result in certain deviations. Therefore, to accurately control the inlet and outlet temperatures, additional control measures must be implemented, such as using temperature control sensors to regulate the inlet flow rate.