【Help】The temperature difference before and after the cryogenic throttle valve is as high as 25 degrees
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New user seeking help: A secondary refrigeration system using isopentane, propane, ethylene, methane, and nitrogen is in use. The temperature before the LNG product valve is 10 degrees lower than that before the cryogenic valve, while the temperature after the cryogenic valve is 25 degrees lower than before it. What could be the reason for this? Is it due to an inappropriate choice of refrigerant? ? I seek your advice!
Reduced pressure leads to a decrease in temperature. The higher temperature of the LNG product downstream of the valve compared to upstream may be due to the temperature measurement point being too close to the pressure reduction valve, which results in an increased flow rate and inaccurate temperature readings; we have encountered this issue as well, with a difference of around 5 degrees
Thank you. After making adjustments, it turned out that there was indeed too much nitrogen; the pressure at the compressor outlet was high, so I released some of it\ud83d\ude02\ud83d\ude02\ud83d\ude02, and then added more again
You have so much nitrogen – how did you get it in there?
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