Steam issue
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I have a few steam-related issues right now, which I’m raising here; I hope everyone will actively discuss them. 1. What is the difference between superheated steam and saturated steam? 2. Does the pressure change when saturated steam becomes superheated steam? If it remains unchanged, what is the reason? I hope everyone will engage in active discussions
When all the water in the wet saturated steam vaporizes, it becomes dry saturated steam; at this point, the temperature of the steam remains at the boiling point. If saturated steam is further heated, raising its temperature above the boiling point, the resulting steam is called superheated steam. Superheated steam does not contain any liquid water, whereas ordinary saturated steam generally contains liquid water. Superheated steam involves a constant-pressure process; that is, as the temperature changes, the volume also changes, and it is considered using fluid flow models (where volume varies with temperature) ； Saturated steam involves a constant-volume process; that is, as the temperature changes and the pressure changes, it is considered using a constant-volume fluid model (the volume does not change with temperature) ； This post was last edited by bingyu252 on 2008-2-17 18:20.]
The answer was very detailed, thank you!
Superheated steam. Definition of superheated steam: When all the water in wet saturated steam vaporizes, it becomes dry saturated steam; at this point, the temperature of the steam remains at the boiling point. If saturated steam is further heated, raising its temperature above the boiling point, the steam obtained at this point is called superheated steam. Applications of superheated steam: Superheated steam has its own areas of application, such as in the turbines of power generation units, where it is directed through nozzles to the motor to drive it. However, superheated steam is rarely used in the heat transfer processes of industrial processes. This is because superheated steam must first be cooled to its saturation temperature before it can release its latent heat of vaporization. Obviously, the amount of heat released when superheated steam is cooled to saturation temperature is much smaller compared to that of saturated steam, which in turn reduces the performance of the equipment used in these processes.
Thank you for the answer from the second floor; I’ve learned something.
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