DIY Sand Battery Air Heaters! w/heat powered fans! no electricity needed! sand battery room heater!

3 simple DIY "Sand Battery" Air Heaters! all w/non-electric "heat powered" fans! all 3 units run totally off-grid! the hot sand in the 'sand battery' heats the air AND runs the stove fans! no electricity is needed! the hot air rises off the sand and the fans blow that hot air into the living space of a room. hot sand heat storage is a new and exciting technology. sand is great for storing heat *and can store it at very high temperatures. once the sand is heated, the unit (and it's fan) can run for hours! 3 different sand batteries are shown (along with 3 different size stove fans). the on-grid options for heating the sand are stove top or oven. off-grid options are numerous and include campfires, rocket stoves coal stoves, propane stoves, alcohol stoves.
(a fresnel lens, a parabolic dish or a solar oven can also be used). a fresnel lens would probably heat the sand very fast. 🟢 Thanks for watching and please like, comment, subscribe and share the video around! 🙂🙂

About the fans: the fans have a thermoelectric chip in them. it converts the heat in the sand into electricity and that electricity powers the fans motor.

Note that some larger sand batteries heat air through the use of pipes embedded in them. room temperature air is blown through the pipes and heats up. the resulting air that exits the pipe is very hot and is vented into the room.

[Darkice]

I've been using sand batteries for years. My wood stove is in the basement, the exhaust pipe is double walled but single walled where it goes through three 50 gallon drums filled with playground sand. The three 50 gallon drums are upstairs in the main rooms and get super hot. Almost as hot as the stove itself. Every night the fire goes out and 6 hours later the upstairs drums are still super hot. I heat my entire house on just 6 medium sized logs a day. The sand batteries distribute the heat better and retain a ton of it.

[ericg]

I use an electric oil radiator heater all winter here in Manitoba, Canada to keep my garage at 8 degrees Celsius or so throughout the winter. Ceiling and walls insulated. I put a stainless steel bucket full of sand on top of it. Last night, I was screwing with my sons frozen car battery and threw a breaker but didn't notice. The heater shut off. Today, I went back to the garage and it was only plus 2 Celsius. I'm glad to have had the sand battery to keep the temp above freezing.

[judyutah]

Need a bit more explanation - I love this idea. 1. How long does one need to heat the sand (in the oven or stove top)? 2. Where did you get the fan that has 5 curled shapes, and what's it's name? 3. Have you examined the cost of heating up the sand vs. the 'free' heat you get from it? Thank you.

[siguie]

Instead of that copper strip you should look at computer "Heat Pipes" they are closed/sealed pipes with liquid inside. The liquid vapourizes and condenses like a fridge system but transports heat faster than solid metal. They are also reasonably cheap and come in different sizes and shapes.

[danestarbird]

Saw a video a few months ago where they were using a solar reflector or fesnal lense to focus solar radiation one a sand battery during the day and bringing inside at night to release the heat. Buckets of sand were maintaining high levels of heat for over 9 hours. Your idea of using the thermal fans is awesome !!!

[nixonsmateruby]

Can someone put loads of fans in the Sahara and point them towards England please so we can be warm.

[Finnmark]

I do this too. Its brilliant. I heat the sandbattery with 4 candles. Drilled 4 1 cm holes in the tin box, and put twinned 5mm copper wire thru there. So the candles hit the wires and the sand very quickly.
Also possible to put a bucket filled with sand on the oven. The oven get cold long time before the sand. Hours.

[Ihavetwoearsandonemouth]

Every day is a schoolday! Fascinating.

[ResponseDigitalMedia]

So for how long does it take to get the sand hot enough on a stovetop, and how long does it hold the heat or for how long will the fans work? In other words tell us more about the “battery” properties of sand.

[Chris-Moore]

Really excited to see how you implement the TEG chips into your own designs!

[ericg]

I live in Canada. I heat my detached, 25 by 25, insulated garage with a simple oil filled, radiator style heater (120 volt). It keeps everything from freezing at about 5 Celsius. On top of it is a metal pail filled with sand. The sand is a heat battery in case the power goes out. The sand keeps radiating heat that it has stored. Saved my ass keeping things above freezing a number of times.

[lisav]

I would want to stick my feet in the sand after a few hours...just like beach sand. Great idea!

[Jack_Wolfe]

1:55 does the fan need to be exposed to the sands rising heat? or is it conducted through the core? if so can you store heat for longer if you insulate the sand with a lid?

[mikefeddersen]

This is such a good idea for desert areas that get high heat during the day, but cool off quickly at night. An insulated container or wall that gets heat during the day?
I heard of a house that had a big wall in it's interior and they used it to cool the house during the day.

[JohnSmith-krxd]

*That design could turn a magnet and coil setup that sends charge to a battery bank couldn't it? Seems like you can charge batteries with wood/coal/oil (whatever heat source) and just a few of these fans. It could be a nice way to charge solar/wind systems when sun and wind are none existent.*

[smithpianoservicing]

Does it make a room cozy? Or just keep it above freezing?

[wolin]

Very nice! I've been heating my home with your cast iron skillet heater and stove fan. I use free hand sanitizer that I was gifted for fuel (I got cases upon cases of it) It works just like gel fuel. Free heat! Will try your sand battery idea too. But maybe I'll heat the sand with hand sanitizer! You engineer such great ideas. Thanks!

[johnthomas]

so, what is the heat temp about 3 meters from the heat fan?

[justmefolks]

I just got one of those fans to use for a power outage. It barely spins on top of my radiator style heaters at half power. In front of a larger heater though it goes nuts. I think it would do well on top of the brick style alcohol stoves.

[johndevries]

Hi sir, Last summer I asked you about the parts for a cooler in my living room, unfortunately I wasn't able to test it as the temperature started to drop again and I didn't need it anymore. This what you are showing now is very interesting. No batteries are required to run the fan. Would it be possible to also run these fans to move cold air so instead of putting this fan on something warm put the thing on ice cubes. Greetings from Rotterdam.😉