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Posted by Boiler Guy on August 08, 2007 at 18:05:36:
In Reply to: Economizer posted by john on August 08, 2007 at 17:38:39:
: can a person build thier own economizer to preheat feedwater?
Sure assuming they:
1) Have an ASME fabrication program including ability to perform all required QC as well as hydrotest the unit
2) Have an insurance carrier that is willing to accept the liability of having it's installation in the facility
3) Understand what is involved with putting a piece of equipment in the stack of a boiler and its impact on burner, water pumps, and other system operations
4) invest in the one-time engineering to allow for the design of the heat exchanger
5) Have the ability to accurately and confidently rate the performance of their unit
6) Understand how to build the casing including allowing for expansion, loadings, and other operational issues
7) Utilizes the proper materials of construction to provide for a viable life span
8) Knows where to source the appropriate finned tube and casing materials
9) Have the fabrication equipment required to fabricate such a unit such as a shear, press brake, tube bender, welding machine, and other.
10) Is willing to take on all of the risk and cost simply to undercut an established manufacturer in an effort to save a few bucks.
I have a rule of thumb I live by "You either know or you do not know, there is no in between and no such thing as thinking you know". If you do not know what you are getting yourself into you shouldn't be considering such an endeavor.
You appear to be located in Kansas, contact Hughes Machinery at (913) 492-0355. Economizer manufacturers are listed on this site as well, you should also contact them.
Boiler Guy.