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Boiler efficiency = power out / power in = q hg hf /

Boiler efficiency = power out / power in = (q * (hg - hf)) / (q * gcv) * %. Four oz beers of your choice! If you see a public highway grid or drain is blocked then you can let us know about it by using this online form. What did you do to get it working then? You don't have to use your energy provider's.

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