Design specifications for the heat transfer temperature difference in plate heat exchangers
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Are there any requirements regarding the heat transfer temperature difference for plate heat exchangers? The minimum heat transfer temperature difference calculated is i°C; it’s not clear whether this value can be achieved in practice. If not, the process flow will need to be adjusted.
Generally 3~5C; the most advanced systems abroad may reach around 1C
Could you provide more detailed information? Or are there any standards I can refer to?
A logarithmic mean temperature difference of 1 degree can be achieved using plate heat exchangers, but strict requirements are placed on the plate design: firstly, it must have shallow, dense corrugations; secondly, it should have a large length-to-width ratio, with an NTU value generally greater than 7. Generally, only manufacturers that have experience with cold air conditioning applications have such panel designs. I recommend a company; Siping Juyuan can handle it.
Our company also has several types of plates with shallow to medium corrugations. We hope that when asking questions, people will provide details about the specific operating conditions; this will make it easier to choose the appropriate option and allow for more accurate responses.
I have been recently studying the minimum temperature difference for plate heat exchangers cleaned with *liquid nitrogen, and I am hoping to get some help.
It’s actually possible, but not all boards and media will work; specific process conditions are needed to determine whether it’s feasible. It is recommended to provide those process conditions.
The temperature difference between the two plate outlets for contaminated nitrogen in the high-pressure plate heat exchanger is 27 degrees Celsius. Does this mean that there will be significant heat losses?