Heat exchanger design temperature
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Please tell me, prawns: Is there something wrong with marking the design temperature on the drawing?
The operating temperature is minus 8 degrees Celsius, and the design temperature should not be higher than minus 8 degrees Celsius.
This post was last edited by Niu Niuhu on 2021-2-1 20:05 Teacher, that is, should the design temperature be marked ≥-8 degrees?
The third-party supervisor put forward the same opinions as the fourth floor
Lower than or equal to -8 degrees, such as -10 degrees
Because the temperature is not lower than -20°C, the design temperature can be as shown in the drawing, but low temperature should be considered when selecting materials, and a leveling test below the minimum operating temperature such as -10°C should be required. If the temperature is lower than -20°C, it should be selected according to the design requirements of low-temperature vessels in Appendix 150.
I think the inlet/outlet temperatures should be -8/5 respectively. How do you understand this?
There is no design temperature for low temperature and the calculation needs to be checked.