Calculation of pressure difference at different opening degrees of control valves
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As the title suggests, I’m seeking help from experts. It is known that the calculated CV value for the control valve is 68, while a CV value of 128 has been chosen. At a normal flow rate of 50 m3/hr, the resulting pressure difference is 0.07 Mpa; the maximum pressure difference that can be tolerated is 1 Mpa (which, in my understanding, refers to the pressure difference when the valve is fully closed). I wonder if it’s possible to determine the pressure differences at various opening degrees of the control valve
Is a medium component required? Personal opinion
The medium is liquid condensate, with a temperature of 133°C and a density of 931 kg/m3
The medium density and flow rates under various conditions should also be required. Then it should be possible to determine the differential pressure corresponding to the opening degree of that control valve at a certain flow rate.