Calculation of the discharge capacity of the safety valve in a water cooler
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For a tubular heat exchanger in which high-pressure gas flows through the tube side and cooling water flows through the shell side, determine the discharge capacity of the safety valve. Three operating conditions are considered: 1. Incorrect shutdown at both ends of the circulating water system ； 2. External fire: Excessive heat input causes the circulating water to vaporize ； 3. The heat exchange tube is cracked. I would like to ask everyone for the quantitative calculation formulas for these three scenarios. Especially for the third scenario, the specification HG/T 20570.2-95 provides a calculation formula for the installation and selection of safety valves, but it states that this formula is only applicable when the high-pressure fluid is in liquid form. I wonder if anyone has paid attention to the relevant foreign regulations; they might provide more detailed information.
No one knows? So, how is the leakage rate for each **water cooler generally calculated?
Refer to “Calculation of the Maximum Discharge Capacity of Safety Valves in Shell and Tube Heat Exchangers”; this paper can be found online, but its calculation process is very complex.
Generally, choosing the smallest channel type “D” is sufficient