Posted 20 hours ago

Diplomat Chimney Fireplace Flue Heat Exchanger/Hot Air Exchanger, Exhaust Gas Cooler Black, XL Diameter 130 mm, 5 Pipes with Damper

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because I had initial high hopes when I saw the printout saying that as well, before noticing the boiler's rated efficiency when new is something like 80%, then looked a bit closer and saw that it was combustion not system efficiency. The exhaust heat and gases travel upward through the flue, circulating around, and heating, the ten heat-exchanger tubes. My intent is to sweep it anyway and from the top - at which point I can see what is coated on it up top. The less draw the more time for flue gasses to cool and the less effective the draft through the flue is. I wanted to build this heat exchanger to reclaim some of the heat that is lost up the chimney of my wood stove.

The problem is that if the flue is too cold, a, it won't draw properly and b, tars and acids will condense in the flue and run down to rot out your cooker. I am thinking getting the exhaust down to a single tube that meshes with the flue pipe is preferable. Economisers -- which is essentially what you were thinking of -- condense that water, and can be used and are used. New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging . Here you have a heating ring main where the main hot water flows and you tee off to each property to a plate heat exchanger.I Canada I have seen the flue from a wood stove go across the kitchen ceiling, into the lounge then up through the floor and into the bedroom, across the room at shoulder height across the landing to the other bedroom and up out through the roof. Finance is provided by PayPal Credit (a trading name of PayPal UK Ltd, Whittaker House, Whittaker Avenue, Richmond-Upon-Thames, Surrey, United Kingdom, TW9 1EH). Adding a condensing portion to a conventional boiler is frequently done on large commercial boilers.

I have a nice CAD drawing of it but the CAD program keeps crashing today, so I'll post a drawing later.

The reason being it would allow the hot gasses to pass over more metal inside the heat exchanger on which baffles can be placed to pass air over said hot metal surface areas. As noted with the tubes/pipes - it might help to get more opening (by diameter or quantity) so as to not restrict the flow of exhaust gasses from the wood burning too much. Alum is almost 5X as thermally conductive as steel, and copper is almost 8X as thermally conductive as steel. I could put any number of ports through the heat exchanger, then cap them off on the top with another box that goes to a single larger pipe. Doing this would allow the unit to retain more heat and re-distribute the heat as the fire dies down, keeping heat output more constant.

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