Let’s ask a simpler question
Thread Content
Steam is a commonly used heating source; I usually come into contact with saturated steam. So under what conditions is superheated steam used? Why use superheated steam? Besides, when the steam is superheated and its temperature rises, doesn’t the pressure increase as well?
You are right; the pressure and temperature of superheated steam are higher than those of saturated steam. Superheated steam has a high energy quality and is generally used for power generation, such as in turbines.
For devices where phase changes are not allowed, such as steam turbines, shouldn’t superheated steam be used?
Superheated steam does not condense easily. Suitable for doing work.
Superheated steam has high quality and should not condense during transportation. Equipment used to generate steam from water can generally only produce saturated steam; superheated steam is obtained by reducing pressure or through heat exchange. This process relies on natural pressure for propulsion and flow, and it is not possible to increase the pressure.
http://wenku.baidu.com/link?url= ... 8YQPyTTlon6JRQyxbHK This explanation is pretty good, take a look.
In the gasification furnace, a mixture of superheated steam and oxygen is used; it features high pressure, high temperature, low moisture content, and a fast reaction rate, but its cost is higher than that of saturated steam.