hotwell temperature
hotwell temperature
(OP)
for improvement of boiler efficiency the hotwell temperatures should be a bit high enough for reduction in coal consumption to be realised. what is the maximum temperature allowable considering the use of multistage pumps whose impellers can be affected by heat and obviously a poor life .





RE: hotwell temperature
RE: hotwell temperature
The reason you want the hotwell to be "hot" is that what ever temperaure is lost to sub-cooling must be made up by burning fuel, coal in your case.
However, in any case, the hotwell temperature is not going to be "hot" enough to have any detrimental effects on pump metallurgy. Some condensate systems heat the feedwater as high a 3-400F before the multistage BFP's ever see it. Obviously, they are designed to live in that service.
There have been some interesting threads on "condensate sub-cooling," and condenser problems. A search of this site using those words should turn up something.
One helpful thread to read would be 391-81838.
rmw