CLAY POT HEATER TEST | Does It Actually Work?!
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- Опубліковано 28 вер 2024
- Infrared gun, amzn.to/3GVQfvX
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Tea candles, amzn.to/3KCg7iP
This test will show you if the clay pot, flower pot or terracotta heater actually works with tea candles. It will also show how you can make your own with tools and equipment that you may already have in your house. This is a three hour test to see if a small room (bathroom in this case) can be heated up. These can also work for Van Life or in emergency or power out situations.
I ran 6 candles in about 4 inch terra cotta pots, 1 candle each. You get about 6 hours each, if you keep the temperature of the wax low that is. Hence 1 potfor each. When you run 10 hour shifts, and your only awake at home for maybe a total of 6 hours, it can help alot. Especially when you have a one room apartment with nothing included
I've got one running now, and I'll tell you can use an old saucepan. Metal, of course is a terrific conductor, and just the same as the clay pot it traps the hot air and converts convection heating into conduction radiation heating. Just remember, the limitation is the candle.
Yes that’s true!
so candle + pot = more heat than just the candles?
is this what you are saying?
@@blindcamel6236 What happens is the heat is transferred to the pot then is radiated from the greater surface area in the form of ambient heat. The pot also acts as a thermal mass as well, where the candle would literally push the heat directly up by convection and you wouldn't feel heat from it unless you literal scrunched up against it. You can get a similar effect by boiling water, you want to slow the heat from going straight up into an ambient surface. The energy yield total would be the same, it's just how you transfer the heat so you can make better use of the energy used.
@@blindcamel6236 Hold your hand 1 foot above a tea light - your hand will feel hot.
Hold your hand a foot about the pot - your hand will feel mildly warm.
The candles are still producing the same heat with the pot; it's just that less is being launched up into your ceiling!
@@MrWirelesscaller What do you put on top of Pan? & Does Candle go into Pot or underneath? Thank you.
You should to another experiment using only the candles and no pots. See if the heat is the same with and without the pots.
indeed
That's exactly what I was going to ask. If he did the experiment with just the candles first 🤷
Probably similar and that's what I was gonna ask too...when you eat at a table with two long candles, sometimes it gets too hot just with that so imagine....but food in a clay pot is better so who knows what's true..
The heat output is the same, but its up near the ceiling. What this system does is force the heat into the bottom of the room with radiant and convection heat.
I use waste fat in my burner. So it is free heat, and quite significant heat too.
I use this type of heater all winter in my greenhouse. And I use it in the house too.
@@sallygiakalis4761 awesome idea for the greenhouse!
Instead of the cylinder drill to separate the two pots use three small pebbles (or similar). That way the hot air rises inside the inner pot then down in between the inner and outer pots. The way you have it set up the hot air doesn't flow as freely inside the gap between the two pots.
Good idea!
This should be pinned or put in the description... very good advice.
@@Ascender4ever Cheers. It's all about getting convection going and maximising surface area. I use this idea in very cold weather in my greenhoues, costs me pennies in tealights rather than pounds in kerosene or electricity.
It doesn't matter how you set it up. A tea candle will produce about 30 watts of heat, and you can't increase that.
Let's say your candle will burn for 4 hours, and produce about 30 watts of heat. You'd need 20-30 candles, replacing them every 3-4 hours, to heat a 10 by 10 room. And it doesn't matter if they're under a clay pot or not, they aren't going to produce anymore heat.
It's not an effective way to heat, and it's not cost effective. Taking the mid range...25 candles changed every 3.5 hours...you'd need 171 candles a day. The cheapest candles I could find in a quick search were $7/125, so you'd be spending roughly $9.50 a day for heat.
You're also risking a fire, because they can flash and explode. It's not safe, it's not cost effective, ad it doesn't work if you're only burning 4-8 candles at a time.
@@davidpaylor5666 Sorry, but no. A tea light only produces about 30 watts of heat. No matter how you set it up, you can't increase that. The laws of physics are against you on this one.
Ive made a few of those to save heating fuel. I like to enclose my desk and use one under there while working or spending time at the computer. It works wonderful and will heat the whole room eventually. Ditch those cheap tea candles and use a candle with a thicker wick and you will see a huge difference in the temp it creates. 👍
Jewish Shabbat candles are the way to go. Widely available, and burn for ages
I kinda disagree - the tea lights do have some pros - firstly their time of burning is well known in advance - say like 4h which means they are predictable in that regard which is a pro for some people.
Tea lights are also easy to regulate how much heat you want - more or less just by using more or less of them. And ofc tea lights can be bought in bulk quantity and each one is basically dirt cheap.
That's so crazy! You can heat for 5 euros for like two weeks with that. I want to do van living when I put together enough money, this will come in handy.
Be very careful with the candle.
I would like to see you repeat the test just using the candles on top of the ceramic tile
real practicle experiment ,you could even build this into a compact box with vents put it on castors and it would be portable around the home ,either way it far better than sitting in the cold ,good post btw .
Thanks so much!
good video im going to try this, since the energy prices have gone batshit-crazy - also its impressive and gratifying to discover that the President of the Ukraine finds time to make these helpful youtube vids ;)
☺yes!
President of Ukraine 🤣
Did this last year and the huge problem is the soot. No matter how often you trim the candle wicks they still like to turn sooty after a few hour burning and it is most noticeable when you blow your nose the next morning and see all the black you inhaled all night. I was using two pots with two candles and the pots themselves was encased in a long box with a fan on one end. It put out good heat yet the soot is not good for your lungs and wasnt worth it in my opinion.
Yeah that can be an issue
Use Beeswax candles. I use beeswax candles.
100% pure beeswax candles burn clean and have their own natural honey/floral scent even when not burning. Unlike paraffin candles, they do not contain any additives, synthetic chemicals or leave behind black soot from smoke when they are burned.
Beeswax candles are the healthiest choice in candles. Made from the caps of bee honeycombs, beeswax candles burn clean, are very long-burning, and give off a pleasant natural fragrance as they burn. Beeswax candles are dripless when burned properly, and release negative ions which help clean the air in a room.
Yes, the clay pot heater does work very well but be extremely careful as the melted wax has the potential to ignite and once that happens the flame can get easily out of control and set off the smoke alarm. Multiple small 5 or 6 inch clay pot heaters with a single tea lite candle is much much safer and better alternative to using a single big clay pot with multiple tea lite candles.
Clay flower pots are extremely cheap and so are tea lite candles.
If safety is a main concern then one should choose the single clay pot and single tea lite candle route.
The clay pot heater doesn't work any better than burning the same number of candles without the clay pot, because they don't add any energy by adding a pot. All you did was make a hand warmer.
Thank you. I was thinking of buying a double walled pot heater now I'm gonna buy one for emergencies
Underfloor heating works very well because it's all over the floor, under the carpet and the heat rises slowly due to the close temperature differential between the heat source and the air temperature. Unfortunately it uses electricty to heat the cables and it's not the cheapest way at present.
Very true!
Don't place the candles touching each other. Space them a little ways apart.
Right on man! Thanks for testing this out. I'm going to do it at home. Anything to keep that furnace from kicking on earlier and more often. Thanks again.
Cheers!
candles are signficantly more expensive per btu than whatever is powering your furnace
Try capping the inner pot or even not at all, you can create a convection effect that way which works better. I have the two smaller pots bolted together, I use a long bolt and get one of the candles straight under it to maximize heat but use enough nuts and washers to ensure the pots aren't touching, and then have a larger pot sitting over the top so the heat can rise up out the small hole in the large pot. I have a second set up with just two pots with no holes capped at all (usually cap the top hole with a coin for about 30 mins to begin with) which pours much more heat out the top and strangely less paraffin smell.
the candles emit a finite amount of Btu's. Nothing is going to change that.
@@uberdome1 yeah no shit, thanks for that. You clearly haven't tried it out yet. It's about saving up the heat from earlier in the terracotta which can then warm more air as it gets sucked through, the pots also radiate heat too. I've tested every method including just a bunch of candles by them selves. I use an actual heater for the first hour but then save on power for the the rest of the day. Good for single room use.
If you’re looking for heat transfer, fire to air, wouldn’t it be the same as letting those burn in the open?
It's facinating watching these experiments, as if by magic you are going to heat the whole room all over by 3 degrees C, it will never work. A few basic facts, hot air rises, you can't stop it. Putting a clay pot over the naked flame flame will slow it down a bit as it heats the pot up, but eventually, the hot air will rise up and heat the ceiling area. Hot air will not flow sideways, it will rise up. If you have a cold room, say the air temp is 3 degrees C, close to freezing, with any heat source such as the clay pot, the hot air will rise faster due to buoyancy because of the differential of the air temperature and hot air, just as on a freezing winter's day the smoke out of a chimney goes straight up vertically and fast. Get yourself a four poster bed with curtains on the top and sides and try the experiment again, you have a much air smaller space above the bed, and it will warm up quicker, but you may not wake up the next morning. Anyway, the average human body gives off 600 watts of heat which is probably more than a few tea light candles, so, get yourself a four poster bed and a thick duvet and you will be toasty warm , especially if there's two of you in there exercising.
I think you should repeat the experiment, without the pots... (with the same starting room temperature). That would really tell if the pots make a difference, or if it is just the tea light flames.
I would assume that the solution of just the candles would allow for the heat to just travel up through convection, and you would very much be heating the room top down.
This method traps the heat lower down the room, in the mass of the pot allowing for an element of radiation.
That being said, this is really just a very crude "radiator" which are miss-named, as the vast majority of heat released into the room is most certainly not through radiation, but convection.
I really can't see it having a meaningful impact on a room of any size, and is far more a "personal" heater, and the notion of having a set of naked flames is just reckless and dangerous.
Nah.................................It doesn't TRAP heat lower in the room, ALL heat rises. And there is absolutely no additional heat from the terra cotta pot. No net gain. @@DouglasFurlong
you are joking right? you have to be. that's too funny
🤣🤣🤣
@@kaylisperry6454 Dave, Benny and Doug aren't joking. 🤣😂🤣😂
That terra Cotta pot does nothing to increase the heat in the room. It might help diffuse it in the same manner that a globe or lampshade diffuses light.
People seem to not grasp the basic laws of physics.
I would like to see a controlled experiment of this pot v.s. just the candles. My bet is that just the candles heats the room quicker and last longer because of the colder slower burning wax. The pot is merely a safety shield to prevent fire but actually stops heat energy from getting to the air keeping a certain amount of it trapped in the pot.
Yes, a controlled experiment is the way to go. Two rooms, same dimensions, same insulation, same air flow, etc, as equal a possible. I will accept your bet but say the rooms will heat the same as long as the candle flames remain the same. That part could be hard to control.
I used three different size clay pots inside each other, on a clay bottom flower pot saucer , all pots bolted to a threaded rod with nuts and washer spacers. With three small feet (short bolts with nuts and washers. All drilled through the clay. Be careful drilling as the clay will pop out a crater when the drill comes out the other side. Drill just enough to see a small hole, then finish the hole from the other side. No craters ! I put one in my workshop on the floor close to where I stand. I noticed a difference in the temp. after a while. Cheap bag of candles from various stores too. Just shop around for the best prices. Cheap heat, lower electric bills and barely any smell !!!! FYI
Good heat capture?
What is really effective is using a few pots threaded over a bolt. The last pot has a series of nuts and washers.
I made one and it put out insane heat.
No, it didn't. (Apologies if I am missing sarcasm here...).
@@thedubwhisperer2157 ever try it?
Might make a video on this one! Great idea!
@philg a video on UA-cam is where i learned it. Same concept but more pots above that heat up.
There is also a ton of home made furnace concepts that use candle oils.
I have insomnia a lot so I go down the rabbit hole quite a bit lol.
Oddly lower temperatures like 67f feel warm if warming from 66 but feel chilly if cooling from 68. The green lobby seem to have got most of the world accepting being cold now, normal indoor temperatures were 70-72 (21-22c) but now people are accepting 66-67.
I guess I need to find a girlfriend to cuddle up!
Since it is a very small space, I wonder how warm it would get from just being in the room without the candle. I know from experience working in a closed off bathroom that it gets rather warm quickly.
I'm thinking the light bulbs did a lot of the heating.
Try again with the lights off.
You don't need the lights on for the experiment to work.
How many Watts were the light bulbs?
Were the light bulbs energy saving, or LED?
use carbon felt as your wick and vegetable oil. The carbon felt will wick up the oil. The wick will last indefinitely without burning up like the candle wick.
What about the fumes given off ?????? ... all fumes from burning any oil or wax are toxic ... FFS people way the fuck up ... Oh sorry you can't cos you're dead.
@@mickeymouse4897 Who said anything about locking yourself in an unventilated bathroom?
How much would the room heat up if you just burned the candles??
thank you for posting this. it all helps.
From my tries your pots look to high from the candles.
To create a eating system, terra-cotta must be hot to redistribute the heat.
But a specific pot designed specifically for heating can be considered as well.
Oh that’s a good point I will have to make another Test
I stuck one tea light in a Dakota fire pit in an area where I wasn't supposed to have a fire and stayed warm enough when I was right by the fire.
a better method would be to trap the heat in the smaller pot, and allow it the heat air around it in side the larger pot. that air then rises out of the top of the large pot. sucking more cooler air into the bottom. and repeat.
You're the exact opposite of a genius.
@@anotheryoutubed why? That's how a convection elemt works.
It suck cold air from the bottom through the heating spine and it goes out of the top.
The original terracotta tealight heater sat on a base with tealights and there's always a hole in the bottom of a terracotta pot.
@@tiddybearkush and that heating element requires what to hear the air? An enclosed space? What have you proved here exactly? Lighting a candle isn't a convection element you ducking dolt.
@@anotheryoutubed I'm just saying that removing the cap of the hole make air circulate like a convector element.
@@anotheryoutubed hot air rise 🤦🏼♂️
You should try the test with some water in the little top that you covered the pots with. I think the temperature would be a little higher in the room because of the humidity.
Thanks for the tip!
Very interesting and easy to follow . Thanks
So based on your test, you achieved a 3 degree rise in 3 hours. In a survival situation if you were in a room that size at 0 degrees F, after three hours it might be 3 degrees F. Wow, what a life saver.
Lmao 🤣
a little physics lesson. Don't worry it won't hurt.
You get about 270 btu/hr of heat energy from each of the 6 candles, thats 1620 btu/hr total or 475 watts of heat energy. That's the only source of heat energy in the apparatus. It's not a lot of heat energy. Consider: a small electric space heater makes 1500 watts of heat energy. So does a hair dryer.
spoiler: use a finned copper plate instead of the terra cotta pot, and use a non-electric fan to force air through those fins. You'll get MUCH better radiant and convective heat transfer; making the best use of your candles heat energy.
If you're not interested in the details, skip to the bottom and look at the heat loss calculator section.
The terra cotta pots are a merely a landing spot for soot from the candles. They're not hot enough to contribute much to the spread of "radiant heat"; since radiant heat spread is proportional to the 4th power of the temperature in Kelvin.
The terra cotta got up to 71C, or 344.15K, its 4th power is ~14,027,849,426 or 14 billion things (the units are not important to this discussion).
If you replace the terra cotta with an ⅛ inch (3mm) copper plate positioned closer to the flames, the copper would reach a much higher temperature ... goal is 250C --- hot enough to sear a steak (or a finger). This is achievable since the flames of the candle may exceed 1000C. Aside: aluminum is a more economical choice than copper, but copper has a much higher thermal conductivity than aluminum [ copper = 400 and aluminum = 240] and will transfer 67% more radiant heat than aluminum.
back to the temperature: 250C is 523.15K, its 4th power is 74,903,984,174 ... or 75 billion things. Thus the copper plate will be (75-14)/14 = 4.4 times (440%) more effective at spreading radiant heat than the terra cotta.
But wait, there's more.
Convective heat transfer is fluid flow across a heated object, in this case the fluid is "air". Convective heat transfer is proportional to the differences in temperature (object - ambient). With the terra cotta the difference is (71C - 20C) = 51C, with the copper plate the difference in temperatures is (250C - 20C) = 230C. So the copper plate is (230 - 51)/51 = 3.5 times (350%) more effective at convective heat transfer than the terra cotta.
And more.
Convective heat transfer is also proportional to the surface area of the heated object exposed to the fluid (air) ... that's why computer CPU coolers have oodles of fins (or pins). So rather than a flat copper plate use a copper plate with lots of fins (or pins). Aside: the design of optimal fins or pins layout is a hot topic in computational fluid dynamics (CFD). If you want to go down that rabbit hole google "CFD pins or fins"
And still more.
Forced convective heat transfer in air is up to 10 times (1000%) more effective than natural (un-forced) convection. So add a fan blowing air through those fins/pins on the copper plate (again like a computer CPU cooler) In particular add a non-electric stove-fan, they use the thermo-electric effect (they convert differences in temperature into electricity) to power the fan. One such fan (a 4 blade unit by Voda) starts spinning at 55C and is most efficient at 250C, but don't operate above 350C, it will damage the fan.
Botton line ... use a copper plate with fins/pins instead of the terra cotta pot, and use a non-electric fan to force air through those fins/pins. You'll get MUCH more effective radiant and convective heat transfer.
heat-loss calculation:
There are lots of heat-loss calculators online. They ask about the size of a room, the insulation, the outside temperature and the desired inside temperature (maybe square footage of windows) ... and calculate the amount of heat energy required to achieve that inside temperature in btu/hour or maybe watts
From this you can calculate how many candles you need, remember a candle makes about 270 btu/hour, or 80 watts.
For example: a 16x12x8 room (LxWxH in feet), with "mediocre" insulation, 0F outside and 45F desired inside; needs 3550 btu/hour. That's 3550/270 = 13.1 candles. Note paraffin wax makes 19,900 btu per pound when burned. So you will be going through 24*3550 = 85,200 btu's a day OR 85,200 / 19,900 = 4¼ pounds of paraffin candles a day. If you buy paraffin in bulk (50 pounds) it costs $2 / pound. So $9 a day for candles. If you buy premade candles at retail, you will pay a LOT more.
It you had a propane heater, you would need (58,200 btu/day) / (91,452 btu/gallon) = 0.636 gallons / day, which costs $3.69 a gallon (delivered), for a cost of (0.636 * $3.69) = $2.34 / day.
Whether you use candles or propane or a wood stove ... make sure you install CARBON_MONOXIDE detectors. Carbon monoxide is odorless, colorless, it doesn't make you cough; it just quietly kills people.
I appreciate the initial use of the word "Emergency." I'm a 33 year HVAC professional and candles of all sorts put out more soot, and add pollutants to the ambient more than is readily apparent. This system DOES work, but there is no free lunch. I am concerned about unattended candles, and soot. Once, again, the presence of soot, and the degradation of Indoor Air Quality is not readily apparent. Regular, and often use of candles, when other heating means are available, is not generally a great idea.
People also don't realise in an enclosed small room Carbon Monoxide can kill you.
I use three terracotta pots inside one another separated with a long bolt, nuts and penny washers. Penny washer placed over the outside hole, bolt through, penny washer inside then nut to hold in place. Several large nuts or stack of penny washers then next terracotta held in place with penny washer and nut. More large nuts or stack of penny washers then last terracotta layer held in place and if there is any length of bolt left more penny washer held in place with a nut. The idea is to get a large volume of metal in place that collects then irradiated the heat.
Four 8hr tealights are then placed on a house brick with two house bricks one each side laid to form a U shape. light tealights and place the assembled pots over the top.
The room I heat is 12 x 14 x 10 and it reaches a comfortable 14c with two of those in the room.
For many that would be to low a temperature. However, when coming in from a freezing cold outside it is a very balmy room to enter. As long as you layer up if you are going to be sitting in the room it will be enough.
EDIT:
Forgot to add I keep a pair of oven gloves close by so the tealights can be replaced once they burn out every 8 hrs.
thanks so much for giving us the facts
My pleasure!
OK. I think this is neat but my question is, how is this better than burning the candles to heat the surrounding air. The candles arent generating any more heat just because they are under a clay pot, so I don't really understand the benefit.
Thank you
Covered pot of water will do as well and be much safer !!
The combustion of paraffin generates the same amount of BTUs whether just the candles alone or with this contraption. Simple physics.
You sure? I will make another video to test this.
Will it give the same heat without the terra-cotta pots? Seems like a lot of work for a few degrees increase.
Are the tea lights cost efficient compared to an average space heater?
Yes, very, but you will stay cold...
I got mine for Xmas
No electricity!
It'd work in greenhouses to keep warm heat inside. However I'd use cheap vegetable oil as a fuel to create flame for burning.
Do you message temperatures in celcius in Canada?
I watched a tea light flame jump out of the tea light onto my dresser and start a fire. Make sure you put tea lights in a protected container where the flames cannot escape!
Ohh yikes!
Conservation of energy….never had a physics course in my life, but even I know it’s about the burning candles, not about the clay pots..
The pots only add additional mass that must also be heated, in addition to the space you’re trying to warm. Add insulation around the space, not more mass to the space
Exactly, clay pot just contains the heat.
Here's a bit of information for you. Six candles would probably give off more heat without the terracotta pots 👍🏼
But can it be duplicated in freezing weather, where this would be a more realistic setting for one to use this system? How long would it take to go from 32F (0C) to say, 45F (7.2C) (coats and other clothing and blankets could help keep it warm enough to survive)?
Thanks for sharing. I was laughing, I thought I heard an Alexa going off in the background.
The original one (from Wales I believe) said to use a metal bolt to join the 2 pots, with washers to create the space between. That way the metal gets hot and spreads the heat to the pots. Would be curious to see if there is a difference.
That's exactly how I made mine, hHe 3 of them and used about 500+ candles over winter. £3.75 per 100 candles. Hopefully wont need them from mid march but they do Heat up my rooms enough to not need the heating on during the day.
Executive summary: No.
Don't need the pots, the heat output is exactly the same, you may miss out on some radiant heat from the pot, but not significantly.
I dig it, thank you.
Did you close the door when you entered each time
Yes I did!
How did you find tea light candles that burn over 3 hours?!?!?!
For the next experiment, keep the lights off. Believe it or not, lights provide a lot of heat in a room through radiation and convection.
I remember back in the day, in S. Dakota, during a really severe winter storm, we used the incandescent lamps to heat the apartment that was otherwise almost uninhabitably cold. If those bathroom lamps were LEDs, then they were merely interferiing ith the result. If they were incandescent, then the result was not necessarily due to the terra-cotta heater acting alone.
Exactly
Depends on what kind of lights they are, incandescent bulbs give off lots of heat, while some LED bulbs give off almost none.
Next time try it without the pots for exactly the same results.
@@gavsmith1980 given the color rendering of the phone watching the digital thermometer and the background "white" light, then these lights are definitely old-school incandescent lamps, so throw in 100W or so of extraneous heating...
I tried this in my 10 ft by 10ft bedroom when the heater went out on us, I had electric heaters in the other parts of the house but decided to see if this would work in my room, the temperature outside was 14 degrees F inside my room at the time was 31 degrees F after 9 hours and changing the candles many times because they would burn out, the temp in my room was not changed at all, in fact it went down to 29 degrees F....lol This is a good idea if you want to sit next to it and warm your hands, and it may raise the temp of a room that is already fairly warm, but there are other things you have to keep in mind, the sun warming up the house can also raise the temperature of the room, things like that. Do this at night in a very cold room when the sun can't warm up the house, and make sure there is not heat coming into the room from any other source and you will see for your self that is simply is a waste of time and money. I mean if your heater goes out and it's really cold, you can't depend on something like this to even heat up a bedroom let alone an entire house. and if you did all those open flames would be very dangerous to have around, especially if you have little children or pets like dogs that can knock things over. Long story short, even my electric heaters didn't get the house up to temp with it being 14 degrees F outside, one in each room only kept the house at about 50 degrees F but I didn't want to use more because I didn't want to pay a thousand dollar electric bill....lol
Also there is the CO2 level to consider. How many candles were used? Did you keep 1 room unheated to compare temps of those 2 rooms? If the other room dropped considerably lower than 29F, if so, then this candle thing might be worthwhile. Having several people in 1 room would also raise the temp and allow for shared body heat under blankets. In an emergency, this might be something to try. But the CO2 would still be a concern.
@@JohnDoe-ff2fc They also produce small amts. of CO, SO2 and some other bad stuff depending on the type of candle.
@@wholeNwon There are safe or just safer candles? If so, could you share which? Should I ever be is such a situation, I'd like to know what will kill me faster and what actions could limit potential problems.
@@wholeNwon Oh, and thanks for sharing any info.
@@JohnDoe-ff2fc Don't know. I'd avoid the scented ones, of course. Sounds like a good Google search topic. But heat is heat. There's obviously nothing about a clay pot that can produce more heat than is put in...PERIOD! But a greater portion of the total heat produced could be radiated laterally than upward. If you burn any hydrocarbon, you will get at least some CO and CO2. Always have a CO detector in the room.
YES !
In inches, what size are the clay pots?
So after 3 hours it was still only 67 degrees. I’m not sure I would say. “ wow I’m warm now”. I suppose you could do multiple set ups of this in your room if needed. But it is a good method for SUPPLEMENTAL heat
You should tell us if it's day or night and what the outside temp is.
Now the question. What would be the result if you didn’t use the flower pots
You do not want to have the inner pot to have a hole at the top. You want to cover the drainage hole. The inner pot will get much hotter in turn heating the room temperature higher.
I'd use Sterno. It's not good to breath the candles burning.
Good point
So... you build a small heater... and on the heater you put an isolation in form of a second pot? Which reduces the efficiency in terms of radiation and trades it for energy-conservation of the inner pot. Or in other words: Putting a second pot on it, keeps the inner pot warm for a longer time but does give up less heat to the room.
Candles heat rooms, is all this proves. Something everyone knew. The clay pots radiate the energy, istead of merely having candles convect hot air via differential density.
You sure?
@@philg Does clay provide heat?
Now you need to coat the pots in graphite and they will radiate the infrared heat far more effectively.
The pots will get up to 40-45c
Also just use 1 pot, you're wasting energy by heating up 2 pots.
Saved loads on heating this way.....only have to rebuild the house after it burnt down, candles ARE NOT for heating
Use the Crisco small can with three wicks. Would last many hours.
How do we know it wasn't the lights being on that heated the room?
You really only need one candle at a time. Last longer as well. But I’d use something other than those teacup candles. Probably go sterno status.
The same candles will put out the same exact amount of heat BTUs, British Thermal Units, for the same exact amount of time if used without anything around them. Adding material, clay in this example, doesn't increase the candle heat output a millionth.
The temperature reached is relative to the outside temperature and the room outside wall and ceiling
insulation rating.
Even so, the test shows a valuable temperature increase if a house furnace stops working.
There are dangers caused from heating any and all enclosures using do-it-yourself stove types.
1 is the oxygen in the room or enclosure is being quickly used and not replaced quickly enough, and many people have died from asphyxia - fatal lack of oxygen.
Another danger is, people get very sleepy while asphyxiation grows, removing the ability to quickly get themselves outside and into air.
Another danger is people lose their ability to make rational decisions as the asphyxiation increases.
Bottom line is, keep yourself from getting into such situations, and provide enough cross-flow fresh air ventilation if you find you must resort to such a risky remedy.
Remember, everything alive must have air ventilation.
Good presentation
Yeah and that's just with small candles if you use a big Crisco one it'll be way hotter
Starting at 18.1Degrees C in a small bathroom isn't really a cold temp to start with. It then takes 3 hours to increase the temp by 1.5 Degrees C ( abut .5 Degrees C an hour ) that's by no means any great achievement. Where I live a standard living room would be about 4 times the size of a small bathroom and from October onwards temperatures in an unheated room would be between 1 Degree C to 5 Degrees C depending on how mild a day would be (colder at night) So it would take an awful lot of pots and an awful lot of candles and an awful lot of time to get it up to the 19.6 Degrees C you achieved in your demonstration. So I dont think your demonstration shows anything other than Terracotta pots get extremely hot when they're placed over candles but as a practical solution to home heating they're little more than a placebo.
I agree. A candle will produce a certain amount of heat energy. A ceramic pot covering is not going to change that. If it did it would violate the laws of physics. All these videos of candle heaters show just how lacking science education is.
where do you live where it is so cold?
@@freppie_ I live in the Repubic of Ireland, Its a small island country off the west coast of Europe and England.
Very interesting
I’ve used oil lamps for years, one large oil lamp heated a bedroom for hours.
Have you tested that for CO2 emissions. Was wondering about that. Have 2 for emergencies. The flame can be adjusted so it burns cleanly. Believe they make a smoke free oil as well and could possibly use kerosene as well.
So, with a few hundred candles you could heat water to make steam to turn electric turbines to generate electricity to power your city and become a millionaire!
Should we work on a business plan?
Dude, I cant believe you didnt make another video putting a end to chats debate.
I read an account of someone in my town burning their house down with one of these cobbled together open flame things. Oh, and they burn oxygen, so you need to open a window or door when they're burning or you'll go to sleep permanently. BAD IDEA
Put one of those fans for a wood furnace on the top of the pot and it will make a huge difference.
Where's the pc fan to pull the hot air out ?
So it raised the temp about 2°F after several hours?
no, 2 °c which is 3.6 °F DIFFERENCE
Can't believe no one has made or created something a little better than candles & pots to help people in these .. cold Situations when electricity goes out...I'm trying to figure out a product myself...just saying.
Thx alot man our bullshit goverment here in Sweden closed down our nuclear power plants so energy is really expensive! So ill try this to get a few celsius warmer 👍🏻
I don't think 3 degrees gain is worth the trouble. I like the idea the though.
The difference between sitting in a room at 17 degrees and one at 20 degrees,I find huge.
3 degrees makes a massive difference actually.
@@marco69tits I keep mine at 14. My dad has his at 17 and I find it too hgh.
turn the lights out, they would affect the test, my small shed heats up with a lamp
Super!
I’m no physicist, but I’m pretty sure there are laws on how thermodynamics works, and this wouldn’t change anything.
That's a smaller room than my living room , wondered how many pots are needed to get the same effect in an average livingroom?
PLEASE NEVER PROCREATE.
do not do this wax gets to hot and you have a big problem when it goes up in flames . do the same but use carbon felt wick and cooking oil . you can tip the flame and still not have a problem
A tealight candle puts out approximately 32 watts of heat energy there is no way you can change this....doesn't matter what you do.. does it matter what kind of elaborate device you make a candle put out 32 watts and that's it... you could increase the energy output by pouring alcohol over it or maybe setting fire to your house
You can't increase the heat anything produces by putting inert things around it. One candle makes one candle of heat. That's all.
A candle gives you about the same heat as a 30 Watt light bulb (not a LED bulb).
You need 75 to 100 Watts to heat a square meter of your home, depending on isolation of your home.
So you need about 3 candles for every square meter of your home to make it warm.
You won't get more heat out of these candles with those pots.
Yes, the pots get hot, but to heat the room they have to emit the heat as much as possible.
That is why heating radiators have a surface that is as big as possible.
These pots trap as much as heat as possible in them.
Radiant heat doesn't warm up the air directly.
Radiant heat is like the sun when you're outside in winter.
The temperature doesn't rise, but the infrared radiation penetrates your skin, make it feel warm.
The pots emit far less IR radiation than the sun on a winter day.
You can't feel the warmth of the pot on your face when you enter the room.
The laws of thermodynamics.
You should have prepared for this a long time ago, instead of having some makeshift heating.
I have propane lamps that give 10 times more heat, and light.
I put a clay pot on my car's exhaust pipe, and now it goes twice as fast, and gets 100mpg.
how?
Best comment ever.
@@alistairclark6814 I put a fuel-saving magnet on my fridge, and now it levitates.
My gets 200mpg
@@用愛發電-h8o Did you use two?
Whenever I watch a vlog, I know in the first 10 seconds if someone is from Canada. Oewt, aboewt
Okay so I'm the only person catching on to his completely incorrect conversion from Celsius to Fahrenheit there is no way that bathroom is no 150-160° f... I believe that 28° c is equivalent to 82° Fahrenheit so your numbers are all off
I dont get it. Those candles are going to put out the exact same amount of heat without all the other pieces, so what is the purpose?
The purpose is to add efficiency to the heat source.
The pot add an big surface for moisture in the air to evaporate on.
Removing moisture from air make you feel warmer seen moisture that evaporate from your clothes and your skin create an cooling effect.
When comparing a convector element to an oil element they say that an oil element give a more even heat source that feel more pleasant because of the mass it radiate heat after it is turned of on the set temperature.
I think one can see it a bit like that.
This device originally is to take the edge out of the cold by removing moisture and not used to heat a room in a sense we today look at it, i mean it's not an electric element.
@@tiddybearkush With all due respect, I think you are confusing some terms here. To remove moisture from the air it would need to condense, not evaporate (the opposite). And in order to condense moisture you need a surface significantly colder than ambient - which a heater obviously can't do. But yes, having a lower air humidity would insulate your body-heat better and require less energy to heat up a volume of air.
Apart from insulating the warmed area you can't really increase the efficiency of a heater because that process is already 100% efficient at creating wanted products - ie. mostly heat, and a bit of light.
Maybe the intention is to create more radiant heat like you mention, just because it feels more pleasant to sit near. It could work a bit for that I guess - but it won't actually heat the area any better.
@@tiddybearkush Better off using a dehumidifier. But the moisture is taken out of the air into the tank by condensing (cooling) fins. This then does make the room a touch warmer.