Some settlements in rural Africa, India, and Pakistan still use this technology for refrigeration as electricity is not readily available. Plus kerosene is already used for lighting & cooking. Coming to think of it, kerosene might be a better option than propane for an off-grid fridge. It's less bulky as you can use plastic fuel containers & not a heavy specialised metal tank, plus you can easily pour it into smaller containers. Of course, the smell is a downside...
No moving parts so they last forever. Since it just needs heat it can be run off propane which was useful before solar and batteries got good and cheap.
I want to thank you for the amazing information you provide to your viewers. This is fascinating material. I appreciate all of your efforts. Many thanks!
When you add heat you increase pressure and that serves to purposes 1-liquifying gas 2-make pressure difference so gas before entering evaporator gonna pass through small hole called expansion valve , gas then expand and drop pressure and temperature and gases boil at average-40 at atmospheric pressure , now why we liquified gas and want it to has low boiling point? because substance when change phase like(liquid to gas) they absorb a lot of heat it’s called latent heat , if gas go to evaporator at gaseous state they would absorb only 1%of the heat a liquefied gas would absorb during boiling or phase changing
@@mohammed88air All good except for one important thing: You can't liquify any gas by adding heat to it. All you do is increase the temperature and pressure. Thee important factor in gas-powered and kerosene powered fridges is that the latent heat of vaporisation varies with temperature pressure. For example, water at atmospheric pressure (1 bar) boils ta 100 C and in doing so absorbs a latent heat of vaporisation 2258 KJ/Kg. At the critical point, 374 C, the latent heat of H2O is zero. All substances that can exist in liquid and gas forms have a critical point and zero latent heat at that point. Ammonia - the working fluid used in non-electric fridges (and electric fridges before freon was invented) has a critical point at 132 C. Latent heat at room temperature and pressure is about 1100 KJ/Kg.
what should i am feeeling so weird in my head i cannot think straight it feels a little dizzy out fridge wasn't working so we invited a repair worker to check it out he solved the problem but while repairinv i think a gas was coming out because our was whole was smelling so weird what should i do
It's extremely inefficient, in refrigeration it uses about 5x the energy a normal vapor-cycle fridge does. It's currently used industrially, like with small power plants, where the heat would be wasted anyway, search absorption chiller.
figure out how to break one of the lines remotely. r717 exists naturally to begin with and doesn't really mess with the environment the way a chlorine containing refrigerant would (this means the epa doesn't care if you vent r717). the problem is the stuff that's in that fridge WILL KILL YOU due to being basically pure non-diluted ammonia. the stuff you can get at any store to clean with is like 10% at most and the rest is water and even that knocks me back if I get too strong of a whiff of it.
Ozone damaging halocarbons containing chlorine or bromine have long been banned by the Montreal protocol, modern refrigerants are almost entirely fluorocarbons and so don't destroy ozone, but only contribute (minorly) to global warming because they absorb infrared radiation so powerfully and are very long lived in the atmosphere.
Accurate information delivered in a classy, concise format that a child could understand. No woke cancer either, what a wonderful era of actual science.
A refrigerator that works like a stove (range) or a water heater... Isn't that dangerous? Literally, there's fire inside... I wonder how many accidents gas refrigerators caused back in the day...
@@Xicohtencatl_Xayacate Yeah, this system just requires a heat source, what is making the heat doesn't matter too much. They actually still make these refrigerators today for RVs and travel trailers: either sold as 'propane powered refrigerators' if they only use a flame, or 'three way refrigerators' if you can either heat it with an electric coil (powered by direct current from batteries or alternating current from an electrical outlet like some campsites hate) or with a propane flame.
And that's how RV refrigerators still work to this day.
Ancient tech still used today! lol
@damon8201 Wait until you find out how old the idea for a heat pump is.
Some settlements in rural Africa, India, and Pakistan still use this technology for refrigeration as electricity is not readily available. Plus kerosene is already used for lighting & cooking.
Coming to think of it, kerosene might be a better option than propane for an off-grid fridge. It's less bulky as you can use plastic fuel containers & not a heavy specialised metal tank, plus you can easily pour it into smaller containers. Of course, the smell is a downside...
@@jonathantan2469 not anymore ... They are solar powered now
No moving parts so they last forever. Since it just needs heat it can be run off propane which was useful before solar and batteries got good and cheap.
"Ice cool drink from an ice cool waitress from an ice cool fridge" doesn't get any better
True🙂
@@confusedbuddy5156 Call the wife a cool waitress and that will be the last cool drink you get.
EMP safe refrigeration... 🍦 👍
Better explanation than today's videos 😅
I want to thank you for the amazing information you provide to your viewers. This is fascinating material. I appreciate all of your efforts. Many thanks!
So in the apocalypse we’ll be able to get some air conditioners working with fire. That’s reassuring.
Thanks for sharing this valuable information.
When I was a kid in the late 60s, we had a gas fridge at home! I couldn't understand how a flame kept things cool.
And after watching this old film i still don't understand it.
@@keithammleter3824 Neither do I! 🤣
When you add heat you increase pressure and that serves to purposes 1-liquifying gas 2-make pressure difference so gas before entering evaporator gonna pass through small hole called expansion valve , gas then expand and drop pressure and temperature and gases boil at average-40 at atmospheric pressure , now why we liquified gas and want it to has low boiling point? because substance when change phase like(liquid to gas) they absorb a lot of heat it’s called latent heat , if gas go to evaporator at gaseous state they would absorb only 1%of the heat a liquefied gas would absorb during boiling or phase changing
@@mohammed88air Thanks for the detailed explanation.
@@mohammed88air All good except for one important thing: You can't liquify any gas by adding heat to it. All you do is increase the temperature and pressure. Thee important factor in gas-powered and kerosene powered fridges is that the latent heat of vaporisation varies with temperature pressure. For example, water at atmospheric pressure (1 bar) boils ta 100 C and in doing so absorbs a latent heat of vaporisation 2258 KJ/Kg. At the critical point, 374 C, the latent heat of H2O is zero.
All substances that can exist in liquid and gas forms have a critical point and zero latent heat at that point.
Ammonia - the working fluid used in non-electric fridges (and electric fridges before freon was invented) has a critical point at 132 C. Latent heat at room temperature and pressure is about 1100 KJ/Kg.
late 18th c technology my grand pa was have like this but old version and fan also both are work with flame
super concept
what should i am feeeling so weird in my head i cannot think straight it feels a little dizzy out fridge wasn't working so we invited a repair worker to check it out he solved the problem but while repairinv i think a gas was coming out because our was whole was smelling so weird what should i do
Very didactic!!
We need to use this technology again..😊
We do. It's still in use in RV refrigerators. Those run on propane.
It's extremely inefficient, in refrigeration it uses about 5x the energy a normal vapor-cycle fridge does. It's currently used industrially, like with small power plants, where the heat would be wasted anyway, search absorption chiller.
Does anybody know the original patent for this? I am trying to find out what kind of pressures there are in the system.
Since it’s Ammonia that’s used as the refrigerant you can use any P-T chart for R-717 to get the pressures.
solar sand battery could supply consistent high temps to modernise this tech ?
Can phase change materials be used instead of a flame?
Wednesday, November 30, 2022 CE, 21:40 EST
Like a catalyst used in those petrol hand warmer things? 🤔
I imagine it's just heat needed to drive the system not specifically a flame.
any source of heat will keep the process going.
Mi abuelo tenía uno. No había electricidad en la campaña de Uruguay.
How can I safely gut out an old servel fridge? I want to turn it into a toolbox.
figure out how to break one of the lines remotely. r717 exists naturally to begin with and doesn't really mess with the environment the way a chlorine containing refrigerant would (this means the epa doesn't care if you vent r717). the problem is the stuff that's in that fridge WILL KILL YOU due to being basically pure non-diluted ammonia. the stuff you can get at any store to clean with is like 10% at most and the rest is water and even that knocks me back if I get too strong of a whiff of it.
Also of note is that ammonia isnt harmful to the ozone unlike most refrigerants today.
Ozone damaging halocarbons containing chlorine or bromine have long been banned by the Montreal protocol, modern refrigerants are almost entirely fluorocarbons and so don't destroy ozone, but only contribute (minorly) to global warming because they absorb infrared radiation so powerfully and are very long lived in the atmosphere.
It's amazing
Accurate information delivered in a classy, concise format that a child could understand.
No woke cancer either, what a wonderful era of actual science.
Cork as insulation omg
A refrigerator that works like a stove (range) or a water heater... Isn't that dangerous? Literally, there's fire inside... I wonder how many accidents gas refrigerators caused back in the day...
No more than gas water heaters or gas stoves.
@@honkhonkler7732 I see...
Imagine replacing it with solar heat
@@zefellowbud5970 Is that possible?! D:
@@Xicohtencatl_Xayacate Yeah, this system just requires a heat source, what is making the heat doesn't matter too much.
They actually still make these refrigerators today for RVs and travel trailers: either sold as 'propane powered refrigerators' if they only use a flame, or 'three way refrigerators' if you can either heat it with an electric coil (powered by direct current from batteries or alternating current from an electrical outlet like some campsites hate) or with a propane flame.
Don't lie!
You just came after watching JerryRig
So and so.... did the narrator mean "F#@king" ?
In a mannerly way😂😂