I have been asked to check the need for a vacuum vent valve on a pressurized liquid storage sphere. The sphere was designed for pressure and not full vacuum (but it will withstand a partial vac). The question is - does it need to be designed for full vac? I know the sphere diameter, metal...
There is some disagreement in the office on how to convert ppmw to ppmv for a liquid system. The majority favors the following formula:
ppmv = ppmw * spgr (of the solution)
