1955 Solar Cooling
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- Опубликовано: 11 июн 2023
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Rob, Imagine adding a 2 molar solution of sodium hydroxide to the zeolite. Then heat dry the zeolite and place it between two conductive plates and blow air through it. It will pull moisture from the air cooling the air and you may regenerate the zeolite desicant by splitting the water to hydrogen and oxygen.
@@elarcadenoah9000I could do a video but it won't make much of a difference. My channel does not have that many subscribers. if you search youtube for direct air electrolisys you can find a number of videos on this general subject.
Given my inital comment on using sodium hydroxide and looking at your last name, I initially misread it as NaOH. 😁
@@elarcadenoah9000 I would if it wouldn't be auto deleted. Comments with links are auto deleted on this channel to prevent spamming.
It doesnt matter if you dont have much views what does matter is that you've gotten it out there and who knows... someone in Africa or a poor country might see it and benefit from itGet to it then Keith... no ones going to make it for you.. only you can decide for yourself... if you do make it I look forward to seeing the outcome
Another cool way of passive cooling is the use of PCM's (Phase Change Materials) which are being used more and more. Usually these are a kind of salt mixture made to melt at a certain temperature, like for instance 21C. As the salt reaches that temperature it starts to melt and as long as it is melting its temperature stays at 21C. Once the ambient temperature drops below 21C the salt will start to solidify, again maintaining a temperature of 21C. So during a summer's day you can condition a space to be at 21C and at night, when temperatures drop below 21C you can recharge the salt for the next day.
In regard to AC-units there is an exciting new development, an AC that runs on magnets (Magnetocaloric Air Conditioning) which doesn't need a compressor nor a pump to pump refrigeration gas around. The idea isn't new but it looks like after years of research these AC's could be hitting the market within a couple of years.
Ah. Rechargable fuel! Nice.
A sack of this is going camping with me, so I can cook dinner but also keep my tent cool during the day as it dries out.
That's a trip! 😮 Science! 🙌🎉 Thanks for sharing this Rob ✌️
Another interesting/unique thing about zeolite is its very high heat capacity. It can be subjected to a lot of thermal energy before getting warm itself.
Aint chemistry fantastic!
Thanks for sharing your knowledge Rob.
You throw me Robert!
You make me sad I had so many bad physics, chemistry and science teachers.
I thought Luke was about to do a hand shadow puppet performance on the cupboard in this one 😆
This is so brilliant, thank you for sharing
Pure magic. Your channel is so exciting. Thank you
Probably a very good idea to _not_ leave zeolite anywhere near your bag of cat litter. Kitty would probably hiss and spit as much as the zeolite.
Im glad i have 3 generations of manuels.Your fabulous. Thank You. 🙏
This must be the stuff inside food heating bags. Thanks, Rob. Absolutely fascinating.
Zeolite x13. My old friend. Always thought that stuff would be a great way to store energy. The cycle is fairly infinitely repeatable.
There's a way to make instant ice from it by putting it and some water in a vacuum chamber and pulling the air out.
Great idea to cool a cabin on a boat. Thanks Rob.
Brilliant thanks for sharing
I seem to remember that zeolite was/is used in oxygen concentrators, removing nitrogen from air, and then piping the oxygen to hospital patients that need it. A device the size of a coffee machine could produce around 5 litres of oxygen per minute.
Wow! I need for you smart, scientifically minded people to break all that down into a prototype that I can understand and copy.
Why have I never heard of this before today? This reaction etc?!! I’m astounded.
I've been waiting for this one Rob! It's very cool stuff!
Ace Work Lad
Bless Up
Hello Robert! Thank you for yet another wonderful demonstration of another interesting scientific experiment!
I have been a fan of your channel since first seeing it in my high school chemistry class.
It sounds like convenient reusable way to cool some air. If only you could do it inside the house, in the shade.
You really got my brain ticking with this one. I'm thinking along the lines of a self contained system that uses the same water over and over again wetting drying with sunlight a heat exchanger or TEG. Using collected condensation to get it going.
Oh another idea has just popped into my brain you could have a TEG wetting (Hot side), drying (cold side) then flip the thing over a bit like an egg timer. All charged by drying with sunlight capturing the water condensation. It goes something like that anyway. ⏳💭⌛
That's sorta what I was thinking. I didn't know such a substance existed, it's amazing.
Done right, it seems like a sealed system like you describe could be a nearly-perpetual motion device.
Thank you, I need to do more research...😁
Amazing idea
EXCELLENT VIDEO! :)
The zeolite fridge has been used in hot places without electricity for a while. The zeolote is housed in a vaccume tube with one end in the fridge and the other in the sun. Brilliant
Where do you buy such a vaccume tube??
@@truthseeker9688 Look up Solar Heater Vacuum tube or Vacuum Tube Solar Collector, you'll find plenty of options.
I guess you can dry the zeolite by pulling a vacuum on the container it is in ? Add water, boil it off under a vacuum, repeat.
I was thinking similar. It would be a lot more energy efficient way of dehyradating it.
amazing
Robert Murray Smith 👍
Try to make a passive aircon with your thurmal vacuum tube BBQ you made.
Make a heat pipe with a little water and or alcohol or acetone, put a thermal blanket on the pipe to transfer the heat outside...
Outside - have the thurmal pipe attached to a large aluminum heatsink. Yay🎉✨😊
Might have to use a thurmal paste on the heatsink connection.
Maybe paint graphene on the hot end in the thurmal BBQ
this is great!
request : please try the fresnel lens as the heat source to an absorptive air conditioner (the kind used in RVs but without the propane or electric heating).
In cad programs you can interface a square duct to a round duct using "LOFT".
Great mahin
This is the best
so you found a way to power the sterling engine which is then attached to a set of bellows or two automatons who waft cold air in your face with giant ostrich feathers. genius sir. next we need some kind of fly swatter, tennis racket, ferris wheel or something which is powered by the wind, created from the draft generated by each waft of the ostrich feather. the flies are then collected by every scoop of wind and dropped into treacle-dowsed, flakey pastry to produce eccles' cakes.
Public safety announcement: Don't mistake _Zeolite x13_ for cat litter
You sound like 21 st century's Mr. Tesla. I will copy your idea and combine it with someone's idea and I just figured out the best wind generator ever. Thanks a lot, Dear Mer. Robert Murray-Smith.
Absolutely Amazing! This deserves further study and a working prototype. How many times can the material be used. And if it can be used both in the cold room and in the hot room of a stirling engine and a chemical point of view. Very interesting . Fantastic!
this is dry it in the summer to use it as heating in the winter sort of thing
So 2 questions, 1. How do you dry the zeolite without adding heat to the space you're trying to cool (and not add humidity)? Or are you thinking of making an outdoor unit to handle the drying part like a traditional AC? And 2: would mixing graphene in with the zeolite improve performance because of graphenes surface area and high thermal transfer?
I read a partial research paper that studied what happens to the zeolite after many heating cooling cycles in relation to water and heat, and turns out that this degrades the material. The zeolite loses crystalinity and becomes less effective at "storing" heat. What I read, did not go into specific details about exactly how long and how many cycles. The full paper cost money and I didn't pay to read the full paper.
Gotta love molecular sieve's.
Although I just got this particular account, in an old (now hacked) account I watched religiously and I wanted to see you do a Zeolite A/C unit the entire time.
Maybe I missed it if you had one earlier but I'm very excited to see you on camera explaining the device
Oh, I'm reminded of making ice with (concentrated solar) heat in an ammonia absorption cycle over CaCl but with my 15 year old brazing skill, manual needle valves and no idea of what an orifice or capillary tube meant. Some of the best times of my life.
With the opposite difficulty in my location of hot & humid or cool & dry it does take a few more steps but iirc Tech Ingredients (I'm sure I've heard you mention that channel before) has done a good bit of work on a system which would, on paper, have an efficiency ratio over 20 and, with optimization and utilizing insolation (the time in which the highest cooling load is demanded) as the bulk of the required thermal input, go into the 30s!
Imagine just that! 30W of (average) cooling power for 1W of electrical input.
For any with clever ideas of overunity, it's really just making our environment into a planetary-scale thermal-flywheel.
Concentrated ammonia systems are very efficient, but when they leak it becomes a silent killer
This just looks like magic. Cooling something down by focusing light on it with a lens during a hot day? Madness.
What does this stuff look like under a microscope?
Tops!......though a thought shot through my mind in that; if Zeolite boils water on contact, then what the heck is it doing to skin!?....dries it out and wrinkles it!?...hence more beauty product sales as vanity feeds the sales loop!?....eeek! ")
This would be great for places that are too hot during the day but too cold at night.
You could just add water each night by drip feed and let the day evaporate it off.
V.interesting..!!!
brilliant!
Could you convert a Swamp Cooler to work with Zeolite?
How are we not using it to generate electricity?!!!!!!!! This material is amazing!
You could use it to heat water and run a generator, but then you'd have to put it in the sun to 'reset' it. So you're actually using the sun as the energy source, and the clay as energy storage. If you need power or heat directly, solar panels are more efficiënt. And heating water in an insulated barrel with solar to use it at night is probably more efficiënt storage than this. Especially if you use a heat pump.
@@griflet1 Yeah, you might be right. I ordered a bit of zeolite to experiment with anyway. Maybe I'll create something great, who knows :D
that's the spirit! Please share your results.
Why isn’t this used on a grand scale to store the energy of the sun for over night use!?
This looks really interesting. How long does Zeolite continue to cool down in this fashion? And where does one order Zeolite granules or whatever they are like this in bulk to experiment with this?
I always wonder how much can be done with evaporative cooling.
They use zeolite in oxygen concentrators to filter out nitrogen. Are there different types? because if not then the spent zeolite could be dried out and reused for what you’re discussing. Or can it just be put back in the concentrator, but how would you get rid of the nitrogen? Innnterrresting 🤔
Practically where can qe get this zeolite?
Is this the substance they're looking at to store summer heat (by driving out the water) then blowing water vapor over it to generate heat in the winter?
Where can I buy this stuff? I want to experiment!
Could you use zeolite in a container and just add water to heat up a camping meal in bag?
Also, do you think a pair of balloons connected by a hose could work as a heat pump? I'm thinking you put them in containers (tin cans?) Fill one balloon with "canned air" (the stuff they sell for dusting PCs) and connect it to the empty balloon with a hose running through 3d printed pistons. Then control the expansion (cooling) and contraction (heating) by raising and lowering the pistons. Or am I missing something?
How energy dense is the heating/cooling effect? Just wondering what the energy storage value would be for the material?
Just received my order of zeolite. Seems like the cooling effect you're observing is due to so called "evaporative cooling". The reason why you feel cold when you get out of water in the summer. Same exact reason why drinking bird toy works
There is some of that, but it is more complex and also different than that. I don't understand the physics well enough to explain it well, but zeolite has a very high heat capacity (can be subjected to a lot of thermal/heat energy before getting warmed itself) and it doesn't absorb/store thermal energy in the same way that most materials do, but it does so chemically.
When you add water to zeolite that has been heated, it activates that chemical process/reaction and thus it gets very hot and loses that stored thermal energy. It does so as long as there is water present. And that process reverses the more dry it becomes. But yes, it also experiences evaporative cooling as well.
@@justinw1765 Yeah, I had no idea it needed to be heated. I thought drying it in room temperature would be enough, but no.
@@barabolak Part of the problem is that it will never fully/truly dry at room temp, because it is constantly adsorbing moisture from the air, so unless you're in the desert and have a fan running over it, it will retain some moisture.
It has to be really, really dry for this process to work.
I just read a partial paper talking about how the zeolites crystallinity breaks down over time when exposed to cycles of water and heat. So unfortunately, you can't use this material indefinitely.
I wonder if coating the zeolite with barium sulfate would do anything interesting.
Would the Zeolite ‘recharge’ in high humidity areas (like here in Montreal)? If so, mix it with it with a ‘light’ cement like Aircrete perhaps and could perhaps even have a structure / dome ‘recharge’ at night and cool in the daytime sunlight? :) 🥶:)
Very interesting material. With those properties is it possible to make a batery ?
Thermal battery only. Usefull, but if you need to turn it back into electricity, you'll have very low efficiëncy.
Zeolite is what they make molecular sieves out of
Is it the heat from the sunlight that cools the zeolite, or something else about sunlight? If the former, you could use something else hot to cool the zeolite, correct? So then could you place a metal tray of zeolite on something hot to help cool down what was already hot?
Hi, I bought some zeolite on Amazon for koi ponds to reduce the ammonia levels. As a test, I put some in the oven at 200 degrees Celsius for 30 minutes. But when I added water after allowing it to cool back down, it didn't heat up with the same reaction. Do I have the wrong type? Should it be x13 and round balls? Thanks.
Wouldn’t putting the zeolite inside a solar oven / solar evacuated tube kettle like you made a few weeks ago make the drying / cooling process faster with the wings open and keep the heat in when adding water?? (Less waste heat out the sides)?
I thought he was going to use a peltier module in there somewhere.. was not expecting zeolite.. plot twist!
If zeolite produces steam when it comes in contact with water could it be used for sea > clean water distillation
In theory yes. But if you want to regenerate the zeolite and use it more than once, you have to heat it. It takes more energy to regenerate the zeolite than you get from adding water to the zeolite.
It may make more sense to use the energy directly, unless maybe your more interested in the zeolit's capacity to store potential thermal energy.
@@kreynolds1123 dunne if that's what she meant, but I'm thinking about adding saltwater to the zeolite, allow it to quickly evaporate into steam, capture that steam and letting it cool down naturally (getting clean water) and then letting the zeolite dry in the sun?
You wouldn't need extra energy for that, aside from some labour involved in moving stuff around.
Problem with that, is that you'd end with salt residues in your zeolite.
@@drillerdev4624 it would work. I was just saying theres a better way. you intend to use the sun's energy to dry the zeolite. It absorbes some but reflects a significant portion. And the sun sort of drys it. But it be really needs much more heat (abouts 250c or 480F) to fully regenerate it.
One will likly get better performance if they floated black foam ontop of water and directly used tge subs energy to evaporate water. Being black it absorbs more energy from a given area with much less light reflection. And Only enough energy to evaporate the water is used to turn water into water vapor rather than a boiling steam that may get much higher than 100c . And wett black foam really doesn't need to be regenerated like the zeolite does UNLESS you evaporated all the water and the salt crystallized on the foam. In which case you simply need only let it soak in more sea water to disolve the crystals.
But, the zeolite can be used to store potential thermal energy by evaporating water and later you can access it by adding water. You can do similarly with sodium hydroxide crystals. It gives off lots of heat when it is added to water and it absorbs lots of heat energy as it is dried.
Good question Anna sounds like a good survival kit item to me even if it's a one time use like an MRE heater or as a way to remove salt from water to drink.
Seems a waste to let that steam get away without generating power with it.
I'm picturing a sealed contraption with a condenser & reservoir and some plumbing and you've got a solar/chemical-powered steam engine that recycles the same water and won't explode.
Imagine the cat's surprise if this got accidentally placed in the litter box instead of kitty litter? It would never use the box again!
Your videos get my mind going every day. Thank you! Have you ever looked into viktor schauberger or tried any work on the channel inspired by him?
So, hear me out: concentrate solar rays using frenel lense, or even better (cheaper) - use satellite dish lined with mylar with the pipe going to the focal point from the center of the dish. Fill the pipe with heat transferring medium, salt, sand, what have you, and transfer the heat to the heat battery - sand, preferably. Attach the stirling engine to the battery n one side, xeolite container on another and here you have it - sustainable source of power, heating, and cooling in one.
The real question is, what invention did you create to get your shadow to run away?
Is this the same thing that is used in water treatment?
Can you teach us how to make faraday flashlight using Fluorescent lamp ballast?
Does the same thing happen if the clay is biscuit fired? Where can we get this clay from?
What is the composition of Zealot (chemical wise)?
I need much more info on this. Here in Arizona, a/c is 3/4 of my (very large) yearly power bill. If you can show how to use this stuff to make an evap cooler that doesn't add humidity to the inside air that would be awesome!
If it boils when you add water, what good is it to put it into a fish pond?
I need to try this myself, after I get bank from a holiday trip.
I think only certain forms of zeolite do this. Rob is using 13X type here. Also, it has to be initially heated pretty well, I think.
Hi Robert.
I bought 10 kilo of Zeolite.
When I add water to it, it doesn't boil or get warm at all...
It's called ;"BSI Zeolite Super, filter substrate, for swimming pools with sand filter".
Is this the "wrong" kind of Zeolite?
What is the "good" kind of Zeolite called/named?
Thanks for all your podcasts.
Greetings from Bart, Netherlands.
Rob here is using 13x Zeolite specifically (he mentions this in the video). You could probably also use 4A type (I'm not sure though)? You want a type that is very good at adsorbing water. Then you also have to make sure it is very dry before you can get this heating effect.
What keeps bacteria, molds, and fungus from growing in the wet clay slop, especially if kept wet for half a year? What good is the power if it turns into a giant box of disease you don't want to have around the house?
Why would you keep it wet for half a year? You would be cycling constantly back and forth between wet and dry, and the heating needed to dehydrate it would kill any pathogens. Plus when it is initially exposed to water when it has heated and dried, boils the water which also will kill any pathogens.
There would be absolutely no point is just letting it stay wet, whether using it for heating or cooling.
Hey Robert it's bloody 6 am Speed it up will you
This and a peltier device.
sir what did they do with that stuff put it on the roof
Video 1279 rerun
I don't think it's a solar energy causing the cooling. In fact I think that's working against you. I think the only cooling is coming from the evaporation off the zeolite because of the relatively humidity of the air.
it is evaporative cooling
@@ThinkingandTinkering I totally understand that it's evaporative cooling. But I'm saying that the solar power isn't driving so much more evaporation that it cools down more than just ambient air would. It's cooling down because of evaporation and the solar energy is just not heating it up as much as it's cooling down. It would call more if there wasn't sunlight on it
Just don’t use it as cat litter… Tiddles will never speak to you again.
It's too bad you can't boil the water, then drain it to make tea or coffee!
british people try not to say brilliant challenge:impossible
An if you print a plastic dog head you could call the whole print "cool it dog"
First