eltjo
Chemical
- Feb 13, 2008
- 22
Hello,
I'm working on a project where a Plate Steam Condensor is used to heat district water for urban houses.
In short, I have:
- superheated steam of 42 bar(g) @ 430 C and condensate of approximately 7 bar(g).
- The supply must be 1 MWth to 50 MWth
- District water pressure is at minimum 4 bar(g)
The discussion with a vendor is that he says that at minimum flow the pressure of the steam (and temperature) must be reduced to the pressure of the district water. This tot reduce the risk of the district water locally boiling in the Plate Heatexchanger. This because the temperature-border (don't know correct term but I mean the highest temperature in the plate) will be at the district water side. At higher flows the pressure can go up because the temperature-border in the plate will move more to the steamside and therefore reducing the risk of boiling district water.
Main question: Is it true the pressure at low flows must be equal to prevent boiling effect of the district water
I'm working on a project where a Plate Steam Condensor is used to heat district water for urban houses.
In short, I have:
- superheated steam of 42 bar(g) @ 430 C and condensate of approximately 7 bar(g).
- The supply must be 1 MWth to 50 MWth
- District water pressure is at minimum 4 bar(g)
The discussion with a vendor is that he says that at minimum flow the pressure of the steam (and temperature) must be reduced to the pressure of the district water. This tot reduce the risk of the district water locally boiling in the Plate Heatexchanger. This because the temperature-border (don't know correct term but I mean the highest temperature in the plate) will be at the district water side. At higher flows the pressure can go up because the temperature-border in the plate will move more to the steamside and therefore reducing the risk of boiling district water.
Main question: Is it true the pressure at low flows must be equal to prevent boiling effect of the district water
