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High efficiency boiler question? guskz 08-04-2006
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Posted by on August 4, 2006, 5:41 pm

1. Any one have a High efficiency boiler, has your fuel consumption
gone down, if so how much % wise?


2. It takes more energy for a furnace in a home to heat 70F air instead
of 100F air. Likewise a high efficiency boiler's Air Vent Intake with
air of -10F in winter cannot possibly be 92% efficient????????
(Those AFUE values are probably done in spring like weather?)


3. Actually I'm a little suspicious why high efficiency boilers need an
air intake but not regular cast iron boilers, my point of vue is they
need cold air from the air intake to promote condensation which defeats
the purpose and any $ savings???


Posted by daytona on August 4, 2006, 5:50 pm
1. My customers 30 - 50 %

2 not 92%....94.6%

3 It has been proven to use outside air to combust fuels, because you are
not using inside air that has already been heated. Thus causing a vacuum to
the point you are drawing outside from some place to equal the air being
drafted up the chimney. Where do you think the O comes from to combust
fuels?????


4. if you wonder so much....you can design a more efficient hot water
heating boiler then


> 1. Any one have a High efficiency boiler, has your fuel consumption
> gone down, if so how much % wise?
> 2. It takes more energy for a furnace in a home to heat 70F air instead
> of 100F air. Likewise a high efficiency boiler's Air Vent Intake with
> air of -10F in winter cannot possibly be 92% efficient????????
> (Those AFUE values are probably done in spring like weather?)
> 3. Actually I'm a little suspicious why high efficiency boilers need an
> air intake but not regular cast iron boilers, my point of vue is they
> need cold air from the air intake to promote condensation which defeats
> the purpose and any $ savings???
>



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