I have a question regarding heat exchangers
Thread Content
Rich-lean liquid heat exchanger. The inlet temperature of the lean liquid is 120, and the outlet temperature is 73. Heat the rich liquid 50 to 93. I don’t quite understand why the temperature at the outlet of the lean liquid can be lower than that at the outlet of the rich liquid
This is normal; the rich liquid takes away the heat from the lean liquid
The inlets and outlets for the shell and tube sides are located at both ends of the heat exchanger. The temperature of the lean fluid is never lower than 50°C below the inlet temperature of the rich fluid; however, it may be lower than the outlet temperature, which is quite normal.\ud83d\ude31
The flow direction of the fluid in the tube side and that in the shell side is countercurrent, which is easy to achieve; if their flow directions were co-current, it would be impossible to do so.
Oh, I’ve learned about counterflow heat exchange – the outlet is around 120 degrees away from the inlet