How to calculate the full-open flow rate when a temperature and pressure reducer fails?
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How to calculate the full-open flow rate when a temperature and pressure reducer fails? It seems a Cv value is needed; is there any formula for that? Since the capacity of the safety valve depends on the capacity of the temperature and pressure reducer
What medium flows through the pressure reducer? Are you referring to a pressure reducing valve? Pressure? Throat diameter of pressure relief valve? Pressure and the medium determine the flow velocity V, while the throat diameter determines the flow area A. AXV represents the volumetric flow rate; if the mass flow rate is required, it can be calculated using the density of the medium. I specialize in the design of low-temperature and ultra-low-temperature valves; I hope my proposal will be accepted! Thank you
Based on the maximum Cv value of the selected valve, the maximum flow rate is calculated inversely. @jiaguoyun
We were told about this during our review, but I wonder in which specific book it is mentioned, and whether there are any relevant formulas?
Isn’t a temperature and pressure reducer a small set of equipment used in steam systems? What does \"fail-open\" mean? Is the high-pressure condensate pump broken or is the condensate control valve broken? I didn’t understand what the original poster was asking, nor did I know which valve’s CV value the replies above were referring to
This falls within the scope of calculations for control valves: calculating flow rate based on the opening degree. Due to the need for coefficient adjustments, manufacturers are generally asked to provide the back-calculated flow rates. According to general experience, the flow capacity of the PSV should be no less than twice the normal process flow rate. @jiaguoyun