How can one distinguish between the hot high-pressure, cold high-pressure, hot low-pressure, and cold low-pressure processes?
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This post was last edited by jordan569 on 2013-1-6 at 22:13. How can we distinguish between hot high pressure, cold high pressure, hot low pressure, and cold low pressure? What are the relationships between them? . Note $ # , $ $
How can we distinguish between hot high pressure, cold high pressure, hot low pressure, and cold low pressure? What are the relationships among them? Thermal high pressure: High temperature and high pressure, such as superheated steam at high pressure, 540°C, 12 MPa steam ； Cold high pressure: normal temperature or low temperature under high pressure, such as in air separation units. Hot low pressure: High temperature and low pressure, such as in catalytic cracking units, at 700°C and 0.16 MPa. Cold low pressure: Low temperature and low pressure, such as in the vacuum flashing process of liquid oxygen and liquid nitrogen, allowing temperatures of -176 to 196°C to be achieved℃