6 years ago The speed will make up for some of the downsides of a smaller propeller when it comes to the amount of air moved.I have a similar problem if I were to build one, but I would have bought two small motors, two propellers and two TEG modules. Maybe I'll give the amazon fan to my mom for Christmas after I build my own. It looks like you did a great job, I will have to read it more thoroughly when I get a chance. The last thing you want after rushing home from work to gather wood, chop kindling, and get the fire started before the house freezes over, is to shiver all night while it heats up. Fluesystems Eco 4 Heat Powered Stove Fan: Amazon.co.uk: DIY & Tools Select Your Cookie Preferences We use cookies and similar tools to enhance your shopping experience, to provide our … With an innovative design, it will compliment any stove. I will have to look into that, as any kind of silicone lubricant would probably help with heat transfer. Happy making - Hulkbuild. You could use other metals but they won't be as lightweight. I don't have a lathe, so to turn down the part I fed a small headless bolt (I cut the head off with a hacksaw) through the fitting and put a nut on the threaded end. I use the white stuff because just looks the same, but use the brown black stuff on extension cord plugs I've had out in the weather for years or other plugs.. . Dielectric grease, white type is similar to what auto manufacturers use in ignition distributors and is easier to find than heat type grease and supposedly works near the same available at most auto parts stores or anywhere that sells hardware. 4-blade heat powered wood stove fan from Aliexpress This heat powered stove fan is very similar to the previous one, although it is roughly 20% cheaper than its Amazon counterpart. With maximum RPM of … Silent The best aspect of a wood stove fan is that ‘it’s powered by heat … Yup, the peltier will act as a thermoelectric generator! By circulating the heat … I cleaned up the top part nicely, then set the chainsaw engine block on top of it. Drill I would suspect that if you were drawing more air through the plates of the heat sink, you'd be cooling that side of your Peltier more quickly, thus reducing the chances of damaging your Peltier. Take two radiators They have to be big enough for your needs and wet them with thermal fan paste on the … Hello, I'm trying to make one myself, however the height can't be over 10 cm. 85 Get it by Tomorrow, … I didn't have this but you might want it: Aluminum heat sinks like the ones used to cool computer processors work really well for this project, and they are easy to obtain. It worked... sort of. I had some brass pieces laying around, so I used those, though I did have to modify one of them considerably, as I will get into in a minute. 112 – 2 Blade Heat Powered Stove Fan The 112 2 blade heat powered fan is UK Stove Fans’ original fan. It was candle driven only though. Set it on top of a wood stove and it blows warm air around the room. No because the Peltier module generates DC. It's got a couple of new features the old one didn't like overheat protection. I read somewhere online about dielectric grease and it specific for preventing or protecting from heat transfer and or also to protect from corrosion, and not as a grounding assistant, I always thought it was for enhancing conductivity but only does by protecting from moisture, corrosion where contacts might not be tight. The pictures above show three of the four brass fittings I used, and how I put them together. But when placed on the stove I guess I am losing the temp difference. This peltier cooler is used in cooling cpus to tabletop wine coolers. You might check out my solution here: https://www.instructables.com/id/Improved-Stove-Top-Fan-from-Junk/, 2 years ago Good luck in the contest, and if you get something posted let me know and I will give it a vote. I made my own fan blade by cutting it out of a sheet of aluminum. This would be the point where you would want to spread heat conductive paste between the mating surfaces of peltier and the different heat sinks, to help with heat transfer. I simply held my fan blade down on a board and pushed down on the unsupported part (the part hanging off the edge of the board) to make the desired bend. The fan gets its power from a peltier element that is used in reverse, i.e. Oh, and sorry if I spoiled your trash to treasure plans. The brass parts in the previous step accomplished a lot, namely making a 90 degree turn and adapting up to the size of the motor. As for the cooler side, we will attach a chunk of metal to that as well. Share it with us! For one thing, many of us have an antiquated/not-working desktop computer or two lurking in a closet somewhere. Have just bought a commercially produced one of these and has a very simple overheat design. These step-by-step instructions show how to install a solar-powered fan that's low maintenance. Okay, so lets jump to assembly. 85 Get it by Monday, … I also bought the high temp version, which raised the price considerably (which I have found isn't quite necessary as the module never gets that hot enough). What I use as cold side is one cpu-heatsink, the warm side is one "Aluminum Alloy Heat Sink For Solid State Relay SSR Heat Dissipation". Put the motor in its place and tighten it down. The drawback is that heat will be conducted through the bolts, and this will hurt efficiency. Vaseline also supposedly works, but might melt out.. Model airplane propellers an alternative to making one... Or for something that doesn't end up looking like a motor. However, many of the parts can be obtained free. Stove Fan with Magnetic Thermometer 4 Blade Stove Fans Heat Powered Fireplace Fan Aluminium Eco-Friendly for Wood Log Burner Fireplace,Gold 5.0 out of 5 stars 1 $45.99 $ 45 . 11 months ago. I feel a little bad that it didn't occur to me to do that in the first place, but thanks for being such a good sport about it. Or, better you don't use glue, as you might want to take the thing apart. Then, I had to grind/file the remainder down until I could drive it into the elbow fitting as seen in the second picture. All you have to do is get your hands on a CD player, or even a computer CD drive, and tear it apart. The hot side is the one that should go against the I-beam. I always wanted to build a Stirling engine but the complexity was a little too much for me, but this project was easily doable as a weekend project! Somewhere around the shop I have a little fan blade I was saving for the sterling project that I can probably attach to the motor shaft; if not I'll just buy an RC plane prop or make something out of a beer can. Reply I had the brass fittings installed up to the elbow, but you will have to determine the best way to feed the wires. Steel is comparatively poor at transferring heat and is very hard to machine, so it isn't recommended for this project. 【Upgrade Heat Powered Stove Fan】- The dual-motor hot air stove fan with 8 blades can produce more warm air and improve the efficiency of the product. yeah I guess maybe i should try it with a taller riser block... You're not alone with this problem. My question is why it doesn't run a 12v fan? Great Idea!You can salvage high temperature cables from an old Iron and crimp them to the cables close to the Peltier Element - do not solder! I'm not totally sure what it is for though. Great Savings & Free Delivery / Collection on many items (6) 6 product ratings - EcoFlow Heat Powered Stove/log Wood Coal Burner Fan new for 2020 Flue Pipe Fan Heat Powered Stove Fan , EIVOTOR 4-Blade Auto-sensing Fireplace Fan for Wood/Log Burner/Fireplace,Eco Friendly and Efficient wood stove fan 4.5 out of 5 stars 127 $55.55 $ 55. .) Glad to know you are part of the community. I chose the engine from a chainsaw, an old Stihl 02 WoodBoss. The fan works perfectly if I place it on a burner , where heat in more centered under the fan . 6x nuts and bolts For this project, we will use the peltier plate in reverse: heat transfer from one side to the other = power out. It's relatively easy to build. Materials required: Do you remember them,,,,,I had no temp control so used to move it to rear of stove, but of course the day came that the mind was elsewhere and my little peltier got fried. Next, lay the peltier on the I-beam, followed by another piece of metal to bridge the hole in the bottom of the engine block (I cut mine from a scrap part of the I-beam I cut off). Now, finish assembling the brass parts if you haven't already. on Introduction, This looks really cool. The temperature difference between the bottom and top of the base causes the peltier cooler to produce low voltage electricity which then powers the electric fan … Sends the heat which rises off the stove out towards you, and round the room, or which ever direction you point the fan, instead of going up to heat the ceiling first before getting down to heat you, comfy in your chair in front of your stove. It then chucked the bolt shaft into a drill and as it spun the brass fitting I held a flat metal file against it. I also had to drill all the way through it, so that the wires to the motor could pass through. The very last thing to do is attach the fan blade and place the whole thing on a hot stove and see if it spins. I suppose you could also tap the holes and bolt it right on, but I wanted to keep it simple to build. It helps distribute heat more evenly throughout a room and allow it to warm up faster than it would without a fan. Happy making, Hulkbuild out. This eco-friendly fan is powered by the heat produced by your fireplace or wood burning stove. I too wanted to build a sterling engine but somehow have never quite gotten around to it. If so (and I haven't seen the idea anywhere else on the net), how about showing me some love with a link in your 'able? Ebay or any computer component sales, but watch out for the prices, as some are quite expensive! Okay, so maybe you don't have access to a free piece of an aluminum I-beam, but if you do just put it in the vise between two pieces of two-by-four and saw off a chunk with the hacksaw! If all the above are all ok, then adding a fan or more to your radiator should help.This design uses 12V fans, powered by a plug-in power-supply, so it’s mains-safe and suitable for home … It works real well as a base but just about any chunk of metal will work. I already had the base heat sink for that project sitting around, so now I just ordered the top heat sink, motor, and peltier chip. heat transfer from one side to the other = power out. When used in this way, a peltier acts as a solid state heat pump. It’s sleek and slender design combined with its mini blade size makes this fan … 2 years ago. The fan base heatsink is a Pentium II heatsink that I had laying around. What you have to do is to get a faster spinning motor with a smaller propeller + you will have to live with a little noise from the device because of it's speed. I have used a small hobby motor which won't operate at this voltage. Solder the wires of the motor to the ones of the peltier. Wow...this was a pretty cool version of these types of fans... i actually made one a couple years ago but my stove gets so hot it melted the plastic parts in the motor... lol but it worked pretty nicely for the ten or 15 minutes that it did work... lol, Reply cant one use two or three pelletiers wired in series to get more power to a bigger motor? I'm hoping to eventually build one for my various heaters,, could also build one for taking camping... tent use.. If the motor spins the wrong direction, you will have to switch the wires going to it. For you, a simpler way to make the brass part may be to buy a dishwasher elbow or something like that. I have one on my computer, it's for the CPU, the processor. I attached one using the existing holes and bolts that held the muffler on. For me the easiest way to do it was to bolt the two halves to each other. Hi,I have read your input on my problems. The pencil lines in the pictures show where the bends have to be made. 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