Presently the water is being heated with steam. There are two applications
800 GPM
400 GPM
Temperature rise 35 - 190 deg F
The steam system is in poor repair and a new boiler is needed. In order to keep down the size of the boiler(s), the plant would like to take these two applications off of the potential load so a smaller boiler(s) can be purchased. The job is presently being accomplished by two large hot water storage tanks heated by steam. The steam comes from a very inefficient boiler plant that would be dismantled. It is over a mile away from the application and the steam main would need to be re insulated, so the new boilers will be placed closer to the application. We are considering a more "instantaneous" solution.
These loads will not be part of the new boiler-house. I've looked at direct fired heaters, but will probably need several for each application. I've considered a hot water boiler, but I don't think this is the right application for it as the water is completely utilized by the process and not recirculated. Real estate is a problem as well. If the storage tanks are kept in play, we can spread the load out over time, but the tanks are leaky and the sparging is inefficient. The room for the solution would be recovered by removing the tanks, but if we can't remove the tanks...
Any ideas on possible ways to do this?
Comments rated to be "almost" Good Answers: