12 Volt Cooktop PROTOTYPE - First Test! Pure DC No Inverter Hotplate
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- čas přidán 21. 08. 2024
- Cooking with NO Inverter! I believe an affordable 12 volt cooktop should be available to everyone. Check out my pure 12 volt DC powered cooktop PROTOTYPE. A cheap 12 Volt portable cooktop (or hotplate) should exist on store shelves. I often cannot find good 12 volt cooking appliances, which motivates me to build them here in the solar workshop. This hot plate is currently just a prototype and has many drawbacks, but this video proves the idea works and it can be done.
The project was more difficult than expected, I encountered several technical and safety challenges while building. Not surprisingly I found many off the shelf cooktops impossible to crack into, and it was hard to know which ones were best to use as a foundation for this project.
The most surprising challenge was the fireproof material found inside common cooktops. It is very dusty and looks exactly like an Asbestos based substance. Even with breathing protection I was concerned. Because of this I had to stop working on the project as of February 2024, and send samples of the material to a laboratory for testing. If the substance found inside is Asbestos, I guess I will have to rethink the plan...
Second challenge, the temperatures inside the cooktop / hotplate were exceedingly higher than I expected, burning many common high temperature insulation materials - literally to a crisp. Even metal materials I often use with heating elements were affected negatively and were not reliable.
During early testing, the prototype started to burn internally and emit poisonous smoke. Eventually I had to rebuild the whole thing again, at which time it seemed to work well enough for a test. So I hooked the cooktop up to my 12 volt LiFePo4 batteries and put on a pot of noodles. On February 29th, the cooktop successfully boiled and cooked a pot of noodles, straight off of a small 12 volt battery - with NO inverter! That's when I recorded this video.
I hope to finish the project asap. If there is enough demand, I may create a how-to-build video. But it needs to be a safe project and not dangerous.
If you like this kind of work, please stay tuned. I am working on several 12 volt cooking prototypes and hope to finish, test and document those soon.
This channel is about using solar power more efficiently and effectively. High tech prepping and preparedness means using technology wisely and not being overly dependent on it.
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Notes from my work on recent cooktop prototypes:
1. Thermal Transfer: hot plates / cooktops like this have an unusual looking heating element insulated with a fibrous ultra high temp material I could not identify at the time of this video. The heat projects upwards into the cookware. Internal temps inside the element chamber are very high. There is practically zero space between the heated radiative surface and the cookware. Because of this, thermal transfer is good. Vast majority of the heat goes into the cookware. A thin stainless pan or pot works incredibly well, heating within seconds.
2. Efficiency: a native 12 hot plate does not use complicated electronic circuits such as DC-AC inverters and induction circuits. Therefore this type of hot plate can cook with much less DC power and efficiency exceeds 90% with no moving parts.
3. Cost: this type of appliance is hard to build DIY, BUT very cheap to mass-produce in a factory. Therefore it's 100% possible to mass produce with cost
Great work Dave!!!!
@hyltonvillet9362 Thank you :) :D
This looks like a party I wanna be invited too. 👍🤣 I’ll be doing a bunch of this stuff this summer. I’m about 60% done my first prototype and living inside it currently. Ive been building out the shop in preparation for the last push. This summer I’m on solar and power, axles and exterior siding. I’m also diesel swapping my hummer, which is my company tow rig. My plan is to make redundant, easy to fix, off-road, multi purpose trailers and survival rigs. Custom built for the customers needs.
@TinyGoHomes Very cool! :D I am interested in tiny houses. Been wanting to build one for years. Have room in the driveway, just need some obstacles out of the way so I can get something decent started. Your projects sound very interesting 👍
Great work!
@chriserb2645 Thank you sir!! :)
Very interested in how to build one. Hope you are able to make a video on this.
@waynehutson6225 Hello, right on. If I can do that I will surely upload. Looking for a way to make a safer DIY build.
Maybe a good company will see them and build a million for us - I hope!
you´re so right. The worlt really nead more 12V and solar cooking! I will make a new facebook Group about this topic
@marcelb.7224 Awesome! hopefully a factory will start shipping these out someday
I'm not vegan, but I have a dairy intolerant child and a wife that can't really eat beef or pork. So we eat a lot of vegan alternatives to dairy and meat products. I'm just thankful for the nice vegans creating a market for awesome alternative products. Vegans tend to be extremely overbearing but this lady is coocoo
I totally understand where vegans are coming from. My diet is highly restricted due to migraines, not fun! :)
Wussy kid and high maintenance picky wife?
If i was the man of the house, their tune would change.
Yes solar edge, people are getting weak and wussy and soft. Soft asses.
Just eat it and stfu.
Keep going
@p0tr3bit3l Right on! Working on a 12 volt oven project, hope to have that posted asap
On a nice sunny day, have you tried using a solar panel directly to the hotplate..? I'm sure it would work, I just have done it. Yeah.. a short circuit with a rheostat. Yes.. I'm subscribed.
@OFFGRID_Trucker Hi! thanks for subscribing - I haven't tried it but it would surely work with enough solar panels. Rheostats and solar can be fun!
Can you supply to Africa, can be a solution to most poor people without electricity. Most house hold are using battery for power. Great job.
@kha2Musie Right, I hope a factory can start manufacturing them... there is no reason why they can't be made available at low cost to the world. High current 12 volts DC is a bit more challenging than 120v AC, but the appliance should still be affordable and mass-produced
South Africa has no power, clowns
Africa doesnt deserve anything.
How about a 12v induction cooktop? Would eliminate the high temperature inside the burner problem.
@MarkSpohr Yes, good idea. I am looking into giving it a try, been trying to sort out the details. My goal on this project was reliability, simplicity and low cost, hence I usually avoid electronics when possible. But induction technology works well. If I get anything working with induction I will upload the results.
@@solarpoweredge yes, looks like you have to build an electronic oscillator which makes it more complicated
I just looked on Amazon. Found 12v rice cooker, roaster, sauce pan and slow cooker. Think you have a good idea but there are cooking appliances that run on 12v DC out there already
Yep, been seeing those for years. Could never find a standard hot plate... or cook top whatever it's called. They are needed because any cookware will fit on top. Why these simple cheap kitchen devices are not sold everywhere in 12/24v continually perplexes me.
They, the appliances you mentioned are indeed available but they take a very long time to reach cooking temperature.
@@JT-lq4ydyes, I have only ever seen 12v cookers under 200w. I'm glad I'm not the only one who noticed!
I used my Ecoflow Delta to power my electric griddle to fry a couple of eggs and warmed up\toasted some bread this morning. I also have and use my Roadpro mini skillet to warm up\cook a can of soup or chill occasionally.. So yeah.. I do some low voltage cooking frequently myself. Also use a NUWAVE hotplate? to boil water with my Delta as well. I'm not much of a cook.. so I don't get too creative. On this subject.. I wonder if anyone has ever put together a 12v cookbook.. lol..
@OFFGRID_Trucker Good going... yeah there should be a 12 volt cook book
Have you looked at induction cook tops? They are basically a rotating disk of magnets. The faster you spin them, the hotter it gets. Convert the motor to 12v? Not sure, never pulled one apart, but worth looking at. May be better than a hot coil
@denniskwasnycia1950 Hello, yes I bought a quite small induction cook top, it's really neat! It does require an inverter and has an internal power driver circuit. I am thinking for grid-down scenarios simple, robust tech is cheaper and easier to service and repair. A resistance cooktop should not require power electronics, at least they'd be optional and could work without it
I didn't think induction cooking uses a motor, but instead uses the native properties of AC for the oscillation needed for the heat.
@@MarcillaSmith Magnetic induction is a rotating disk with magnets on it of alternating poles to create eddy currents to heat aluminum or copper. The motor is used to rotate the disk of magnets
@@denniskwasnycia1950 as used in the kitchen of chef Rube Goldberg himself
@@denniskwasnycia1950induction is achieved with a rotating magnetic field in a static coil using a zvs(zero voltage switching) circuit. This can 100% be done on DC power and is fully adjustable.