Find the temperature after decompression
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It is known that the pressure in front of the valve is 4MPA, 40 degrees, the pressure behind the pressure reducing valve is 0.5MPA, and the flow rate is 1000NM3/H. What is the temperature after pressure reduction? How to calculate? Thanks
The temperature after decompression needs to be calculated based on the ideal gas equation of state or the first law of thermodynamics, but detailed answers to such questions usually involve complex calculations that require extensive knowledge of physics and chemistry. This requires knowing other more conditions, such as the type of gas, whether the process is considered isentropic (whether it is adiabatic), etc. If the process is isentropic (adiabatic), it can be calculated using the isentropic process formula. First of all, it should be clear that an accurate value cannot be given directly because several variables are involved, including the specific heat capacity ratio of the gas. Complex issues such as this usually require more sophisticated theoretical analysis and simulation, or experimental measurements. It is recommended that you seek more accurate help from physics or thermodynamics professionals. Sorry this may not fully answer your question, but hopefully it gives you some direction. .
You can calculate it with aspen.
Down to 17.5 degrees, communication is possible
40.74143℃, please refer to the troubleshooting of Yushi Network for the detailed process.
The aspen simulation directly outputs the results. If you want to calculate it yourself, you have to iterate.
This is what I calculated before, and it’s almost the same as this! http://www.fishsting.com/xxjh/soft/jwjyjs.html