suggestions for condensate

leo g_96

run the condensate through the nuteralizer, then out to a storage tank, and water your lawn with it!

leo g

leo g_13

another

how about for using the condensate full strength for glass etching?

leo g

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jaybee

condensate furnace

I still dont really understand the theory why condensate furnaces are more efficient. For some reason im missing the consept. Will some try and explain it to me.

jaybee

condensate furnace

I still dont really understand the theory why condensate furnaces are more efficient. For some reason im missing the consept. Will some try and explain it to me.

Constantin

Condensate Furnaces...

Whenever you have less-than-perfect combustion, you produce several byproducts: heat, water, CO2, and a number of other gases + impurities. At the most basic level, the hydrocarbons found in fuels (usually strings of Carbon and Hydrogen Atoms) and Oxygen combine to form Water (H2O) and Carbon Dioxide (CO2). Thus, any form of typical atmospheric combustion will produce water.

The water coming out of a non-condensing furnace/boiler is in the form of steam. That is, at sea-level and regular atmospheric pressure its temperature is at 212 deg F or 100 deg C. Increase pressure and the temperature can be higher (pressurized steam systems for example).

Water exists in three phases: solid, liquid, or steam. When water goes from liquid to steam form, the temperature stays the same but an enormous amount of energy is required to make this so-called phase change.

In condensing boilers/furnaces, the exhaust gases are run through a heat exchanger, where cold return water/air entering the boiler/furnace lowers the temperature of the steam to the point where water condenses back into liquid form. This reverse phase change releases a lot of the energy used to make the steam.

Thus, quite a bit of the energy that would have been lost with steam up the exhaust pipe is kept inside the house. From what I can tell, condensing heating appliances typically have AFUE ratings ~8% higher than the best non-condensing units. This is also why condensing appliances need to be connected to a sewer to allow the accumulating condensate to drain away.

The lower exhcaust temperature of condensing appliances also easily allow side-venting instead of relying on chimneys to carry the exhaust away. Since exhaust temperatures in high-efficiency non-condensing appliances are lower than the yesteryear units they replace, some older, typically oversized and unlined chimneys will require liners.

Otherwise, the exhaust gases might condense inside the chimney (cold walls act like the HX in the condensing appliance) and cause a lot of water damage.

GEO_3

Sure

Just picture taking the flu gasses leaving your 80% furnace and squeezing them through another heat exchanger. The additional heat transfer yields another 10% efficency. In doing this you lower the temperature of the gases below the dew point, forming the condensate, a by product, I know it's an over simplification but thats it in a nutshell.

jaybee

condensate

Thanks once again guys . Its people like u that make this a really great place to learn!!!!!

leo g_13

and another

save some in a 5 gallon pail, then when you need to clean your cement workshop floor, you don't have to buy muriatic acid!

leo g

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leo g_13

> save some in a 5 gallon pail, then when you need

> to clean your cement workshop floor, you don't

> have to buy muriatic acid!

>

> leo g

>

> _A

> HREF="http://www.heatinghelp.com/getListed.cfm?id=

> 286&Step=30"_To Learn More About This

> Professional, Click Here to Visit Their Ad in

> "Find A Professional"_/A_

leo g_13

and another

use the condensate full strength to kill weeds in your garden!

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[Deleted User]

For example

If you know about latent heat?

Simplified its like this...Water can exist as either water or ice at 32°, similarly it can be steam or water at 212°. the difference in the state depends on the amount of latent heat added or removed.

SO... if you take 1 lb of water at 32° and raise it to 212° it will require 180 BTU's (remeber: 1 bTU is the energy needed top raise 1# H2O 1° F)

To take that same water at 212° and turn it into steam takes 970 btu's...5 TIMES the energy to go from freezing to boiling without raising it 1° in temperature.

a 100,000 btu/h can condense almost 8 - 10 lbs of water an hour..thats an additional 7000-10000 btu's just by condensing the water out of the flue gases..

Clear as mud??

Mike