Heat exchange temperature difference between cold and hot fluids at the heat exchanger outlet
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What is the typical heat exchange temperature difference between the cold and hot fluids at the outlet of a heat exchanger? Is it related to the type of heat exchanger?
Consider medium properties, process requirements, as well as investment and operating costs!
Based on actual needs, medium properties, and process requirements. If the heat exchanger must ensure the process parameters of the medium, the investment cost becomes secondary.
It depends on the medium used in your heat exchanger; for example, the temperature difference in the circulating water is 8-10 degrees
He was asking about the temperature difference of cold and hot logistics being exported, not the temperature difference at the inlet and outlet for cold or hot logistics.
For process design, the temperature difference between the cold and hot streams at the outlet of the low-pressure heat exchanger should be maintained at no less than 5 degrees； The high-pressure heat exchanger only needs to ensure that the outlet temperature of the hot stream is higher than that of the cold stream.
It depends on the process requirements and the physical properties of the hot and cold fluids
The cold-side temperature difference in shell-and-tube heat exchangers is usually not less than 5°C, typically ranging from 6 to 8°C, while that in plate heat exchangers is usually 3°C.