Making your fireplace more efficient, heat exchanger build
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- เผยแพร่เมื่อ 13 ต.ค. 2024
- Wood burning fireplaces are extremely inefficient as most of the heat goes out the chimney. One way to mitigate some of the loss is to use a heat exchanger that is coupled to a fan and pushes ambient air through the heated pipes. The wood is placed straight on the pipes.
I’m doing your exact build. With leftover fire tube from a boiler at work. I’m not doing any bends 90 degrees only. Mig welding all my joints. Super cool idea man !!
Good luck. Let me know how it come out.
I just bult one very similar out of schd 80 2" stainless pipe . Ran out to a 280cfm inline fan built into a box with a reostat ..... Whick i had the patience ro film stuff
Tell your client I want to see it with flames 🔥
Are the curves aesthetic and/or functional? If functional please elaborate. Beautiful craftsmanship. I want the utility of exchanger but my skills and tools necessitate 90 degree angles. Wondering what relevant effects/consequences are present when exchanger air must travel at 90 degree angle instead of gentle and gradual turn.
Most of the inspiration came from commercially available units so I can’t claim any air flow calculations. If I was to make a purely observational assessment I would say the air flow difference would not be noticeable if you went with a 90. If you have a decent fan there is a slight back pressure in the exchanger but you can only go so far before it starts to whistle.
Seems you would get no air moving.
how much?im interested to try. if works well i can recommend tbis to my family & friends let me know thanks
I don’t really make them commercially, the client was a friend so the price reflected that. There are similar units available at multiple retailers if you are looking to get one. Just google fireplace heat exchanger.
I like your design. When I looked up schedule 40, there were all sorts of diameters. Do you know what you used? And was it just steel pipe? I am obviously a rookie here. Thanks
It was 1.5” schedule 40 steel pipe. The outside diameter for that is 1.9”.
Do you sell these?
This one was custom order for a friend but you can buy them online already made in a similar style.
Do you see any reason I can’t just assemble something out of black or galvanized pipe from Home Depot?
Using galvanized steel would likely generate some toxic fumes while burning the coating so I would avoid it. I am not sure if the black pipe has any similar limitations. From a build perspective I think it’s a fine idea and should work.
@@asquaregarden thinking black pipe then that I pre-burn before using it within the home
I have a few questions if you don't mind. Is that 2"x1/8 or 3/16 wall tubing? The other question I have is about capping the holes and making them smaller, what is their purpose? Great job! Thank you.
It’s schedule 40 pipe, I believe the wall thickness is .145”. The capping is so you build up a little pressure and increase air velocity, like putting you finger on the end of a garden hose.
Is this just inside a fire place or does some tubes need to come out? Im trying to find a way to collect more heat and make the wood burn hotter, ive heard some ppl putting stainless steel backplates to reflect heat back to the door is that true?
You connect a piece of stainless exhaust hose and an in-line fan to the input that blows the hot air in the room. I’ve seen the heat deflectors before but not in action so I have no experience with it. They do claim some 40% more heat in the room.
@@asquaregarden do you think this could be done by running it trough the ash compartment if you drilled holes for the outlet and inlet? And respect my man not everyone even botheres tp anwser
I would have concerns about efficiency if it got covered by ash and insulating it to a degree. That is why burning right on it is an optimal solution in my mind at least.
I want one 🤠
I want your belt sander. Will you adopt me please.