How should the value for “medium density under discharge conditions” calculated for the safety valve in SW6 be filled in?
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Given conditions: The working pressure indicated on the drawings is 0.7, the opening pressure of the safety valve is 0.8, the design pressure is 0.88, the maximum operating temperature is 80°C, the design temperature is 100°C, the overpressure limit is 0.08, the medium is air with a mass density of M=28.97, and the discharge pressure of the relief device is 0.98. It is necessary to determine the density ρ of the medium under these discharge conditions. Please provide the calculation formula and the underlying principles. Thank you.
I want to know too, once the experts solve it
10.10591421
Could you provide the calculation basis and formulas? Thank you, expert!
You can consult the chemical medium manual; by checking the charts based on pressure and temperature, you can find what you need: victory:
Firstly, the data you provided is incorrect; the overpressure limit is 0.088 MPa. The relief pressure should be calculated in accordance with GB/T150-2011, and it should be 1.068 MPa (absolute pressure). The poster, who needs to know the density of the medium under discharge conditions, is likely trying to calculate the safe discharge volume of the container. This does not necessarily have to be determined using the density under discharge conditions; it can be obtained from the flow rate at the inlet of the equipment.