Amount of cooling water used after switching from high-pressure steam to medium-pressure steam
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I need everyone’s help. The current process conditions are 3.9 MP, 317°C, with high-pressure steam at 24 t/h, and cooling water at 5.2 MP and 125°C to produce steam at 1.8 MP and 215°C. It is necessary to change this to medium-pressure steam at 1.6 MP and 244°C, with cooling water used to produce steam at 1.6 MP and 215°C. I urgently need to know the amount of medium-pressure steam required as well as the amount of cooling water needed ! !
Calculate the enthalpy difference of the steam before and after temperature and pressure reduction; this enthalpy difference represents the heat required to vaporize the cooling water, and from this it is possible to determine the amount of cooling water needed.
I didn’t understand. There’s a small software called “Collection of Practical Software for Chemical Engineering Design”, which includes calculation functions; otherwise, one has to do the calculations by hand.