Is it possible for phase change to occur on both sides of a plate heat exchanger?
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There is a large amount of steam at atmospheric pressure being released directly in the plant; its temperature is around 100°C and its flow rate is 0.6 t/h. Currently, this steam is discharged directly. To save energy, it is planned to install a plate heat exchanger, with the steam flowing on one side and tap water at a flow rate of 0.2 t/h flowing on the other side. Initially, it is intended to create a slight negative pressure at the outlet on the water side using an ejector, in order to produce saturated steam at 95°C. Is this theoretically possible? Additionally, preliminary calculations indicate that the amount of steam is certainly excessive; that is, after heat exchange, what comes out of the heat exchanger should also be a mixture of steam and water. Is it easy to remove such a steam-water mixture? (After all, condensers in steam turbines are equipped with vacuum pumps to remove non-condensable gases.)
That’s not appropriate, right? Use a plate heat exchanger with phase change. . . It’s better to use a flash tank
If a flash tank is used, circulation should be established to maintain continuous heating, as the latent heat of vaporization is relatively high after all