What is the design approach for selecting heat exchanger circuits? !
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Should more custom-designed solutions be used, or standard heat exchangers selected and then subjected to verification calculations? Using a standard heat exchanger would be much cheaper, right?
Generally, calculations are done first, and then, based on the heat exchange area obtained from those calculations, standard tubes are selected as much as possible.
First, the type of heat exchanger is usually selected based on the process conditions and the heat transfer medium, as well as the flow direction of the medium. Then, the amount of heat that needs to be transferred is calculated, and the heat transfer area is estimated using the heat transfer coefficient; finally, the specific model of heat exchanger is determined. The information from Baidu is for reference only.
During the design phase, once the calculations are completed in the planning stage, standard sizes should be preferred as much as possible; thereafter adjustments are made based on the layout of the equipment, with installation considerations being key – making efficient use of space is very important.
Standard heat exchanger or standardized heat exchanger? Whether it’s a custom order or not, drawings must be provided before production can begin. The diameter of the cylinder, the curvature of the end caps, and the diameter of the tubes are all standard dimensions; the prices are more or less the same. Pre-made versions are cheaper, as they can be purchased directly
It seems that the vast majority of heat exchangers are still custom-made. . .