Water supply for steam line.
Water supply for steam line.
(OP)
Hello,
We are designing a steam line and some debate has been risen regarding the amount of water that will supply our steam demand. We know how much steam we need to run our application (liters/hour), according to a specific flow that we need inside the equipment tha uses it, but the question now is how to calculate the amount of water to feed our boiler in order to get the amount of steam we need?
Could anybody give a detailed explanation, please?
Thank you in advance.
acr
We are designing a steam line and some debate has been risen regarding the amount of water that will supply our steam demand. We know how much steam we need to run our application (liters/hour), according to a specific flow that we need inside the equipment tha uses it, but the question now is how to calculate the amount of water to feed our boiler in order to get the amount of steam we need?
Could anybody give a detailed explanation, please?
Thank you in advance.
acr





RE: Water supply for steam line.
RE: Water supply for steam line.
Let start with the easiest: Steam losses on the system (valve stems, leaky flanges, condensate traps).
The second group of water losses are induced by the purification system to feed your boiler with adequate water quality. This will depend on the quality of the water and the operation conditions of the boiler. For example a reverse osmosis system losses up to 25% of the incomming water.
The third group of water losses is created by the blowdown of the boiler. The water will evaporate and all salts will stay inside of the boiler. To aviod precipitation and other problems a part of the boiler water has to be disposed. Depending on the feed water quality you clould have around 10% but I have already seen more than this in Boilers operating only with softeners and no condensate return.
Kind regards
RE: Water supply for steam line.
The detailed explanation about the points where I could loose steam has enable me to calculate in a more accurate way the amount of water I would need for our system. I am checking all the "leaking spots" , how much the purification would consume (we will use distilled water) and how is the boiler blow down. Based on that, I am also adding a security factor of 15%, just in case.
Thanks a lot once again :)
RE: Water supply for steam line.
RE: Water supply for steam line.
1GL approx. 8.3 Lbs
1 lb of water = 1 lb of steam
so I would multiply the result x 2 to account for losses/leaks and blowdown.
ER