When heating from 280°C to 310°C, can saturated water vapor at 330°C be used as a utility?
Thread Content
When heating from 280°C to 310°C, can saturated water vapor at 330°C be used as a utility?
This post was last edited by ylb913 on 2015-8-9 at 10:36. A temperature difference of 20 degrees should be sufficient. However, the pressure of saturated steam at 330 degrees is around 12.8 MPa – is it possible to have such high-pressure saturated steam available?
Steam at 330 degrees Celsius – that’s an extremely high temperature; the pressure is likely to be high as well. I’ll need to check a table to find out the exact values. For steam at such a high temperature, the pipes used must be pressure pipes; it’s not clear whether they are high-pressure or medium-pressure. Theoretically, it is possible to achieve this; I’m not sure if it can be done in reality.
It’s not realistic; the temperature difference seems too small, which requires a large heat exchange area. Additionally, the saturation pressure of 330 is quite high. It is recommended to use superheated steam at 3.5 MPa and a temperature of 350–400 degrees
I understand what the original poster means, but with superheated steam, only the sensible heat portion can be utilized, which results in a particularly high consumption of steam. My original intention was to use the latent heat of steam to heat the material.
Theoretically, it’s possible for me to do it, but I’m not sure if it can be achieved in actual industrial processes.
Why not choose other substances, like silicone oil or something?
Substances like silicone oil are merely circulating media; in reality, oil furnaces rely on electricity to function. To achieve the same results, using electricity is far too expensive.
Such high temperatures are usually achieved by using heat transfer oil for heating; steam pressure at such levels is extremely high and poses a great risk. It is recommended to use a heat transfer oil boiler instead.
Generally, the steam pressure in high-pressure boilers is 100 bar; for your case, a supercritical boiler is required
Theory is fine, the pressure is too high. In the case of interwall heat transfer, the heat transfer coefficient is not high either ； Also, does your factory environment permit such high-pressure pipes and equipment?