Coal Boiler Buffer Tank, Any Success or Failure Stories ?

Re: Coal boiler buffer tank, any success or failure stories ?

PostBy: Kenbod On: Mon Feb 28, 2011 10:29 pm

I can prove that a boiler tank with a Kaa-2 (which only holds about 24 gals) will improve efficiency. There is no doubt.

But most folks burn coal for reasons of economics. What I cannot prove is that such improvements in efficiency would ever save the owner any money.

My Kaa-2 system would save around 5% in overall efficiency with such a unit. If one is considering the Ergomax at around $1200+ installed, I would advise caution. $1200 buys me (in CNY) almost 5 tons. The return on investment would be longer than the anticipated lifespan of the Ergomax. An older electric water heater or galvanized well tank from Tractor Supply fro $200 would pay back much faster.

Remember, you can heat with electricity at about 100% efficiency. But you don't. You heat with coal at about 80% efficiency because it costs 75% less.
Stove/Furnace Make: Van Wert Simplex Multitherm
Stove/Furnace Model: Keystoker Kaa-2

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Re: Coal boiler buffer tank, any success or failure stories ?

PostBy: lsayre On: Mon Feb 28, 2011 10:38 pm

As Indirect Hot Water tanks go the Ergomax E23 is priced right in there tit-for-tat with nearly all of them, so if you are buying it as an Indirect Hot Water tank, you are getting its boiler buffering feature essentially for free.
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Blaschak Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW)