Why does the temperature drop to 148 when 99% pure hydrogen at 170℃ is mixed with *** at 190℃℃
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Dear teachers, the thermometer shows an accurate reading of 148°C – why then does the temperature drop?
In expansion refrigeration, does the pressure change before and after the material enters the system?
This post was last edited by liu530014416 on 2022-10-8 11:36. *** is a liquid, and the heat exchanger has nozzles that spray it into a mist. According to the pressure transmitter, the pressure change is minimal; the pressure of the *** liquid phase is 165 Kpa, while the pressures of hydrogen and *** in the gas phase are 180 Kpa, indicating an increase in pressure instead.
A portion of the *** vaporizes to reach a new gas-liquid equilibrium with hydrogen; heat is absorbed and then the temperature drops.