Calculation of the relief temperature for safety valves under fire conditions
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Experts, under fire conditions, is the discharge temperature of a safety valve the dew point temperature or the bubble point temperature at the discharge pressure? The medium discharged by the safety valve is entirely gas; I think it is reasonable to use the dew point as a criterion. However, some people say that using the dew point implies that all the liquid in the tank will vaporize. So, in the event of a fire, will all the liquid in the tank indeed vaporize? Also, how should the temperature and pressure at the safety valve outlet be determined (i.e., determining the design temperature and design pressure of the outlet pipeline)?
Please share your opinions on the discharge temperature of safety valves under fire conditions, and provide the most authoritative results.