Issues related to temperature changes at high and low thermal scores
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The hot heavy fraction oil enters the hot light fraction after being depressurized by a corner valve, with its temperature rising from 260 degrees to 266 degrees. Could you please explain the detailed mechanism behind this?
One more question: for the high-pressure feed pump in our hydrogenation pretreatment unit, the inlet temperature is 182 degrees, the pressure increases to 9.0 Mpa at the outlet, and the temperature rises to 187 degrees. What is the reason for this?
The issue of energy conversion: work done generates heat