Air Conditioning isn't free... but we're close. 

I was just about to run over to your channel and talk about this; awesome to see more development on these coatings!

It's great to see multiple people coming up with similar solutions independently, it tells me I'm on the right track. The next iteration for me would be to get the benefits of gravity and state change by constructing a heat pipe with something like acetone or toluene as a working fluid, put the condensing end in the dewar connected to the panel and the evaporative end in a dewar of it's own. The great thing about thermodynamics is it's just moving heat around or converting it to a different type of energy.

Would love to see this added to thermo electric modules. Yes they are inefficient, but a bunch of them at low voltage is still a cheap solid state heat pump. Cooling smaller spaces like a trailer, shed, or single room on low total power should be possible. Perhaps a ground loop to dissipate would compensate for the inefficient TEC's and bring total system efficiency up to mini split levels. Like, ebay 6 TEC water to air module in series at 14v, heating water/cooling room- hot water to ground loop- to black body radiator- back to TEC module. You'd have to come up with a way to deal with indoor condensation, but the TEC's would have their hot side being cooled well below ambient temps. With enough ground heat dissipation, one should be able to crank up the voltage/power on the TEC's during the day to get useful BTU's when necessary and when solar power is available.

Thanks for the feedback! I found that a significant improvement occurred when I blended spherical barium sulfate nanoparticles with different SIZES. I ran the formulation at four different temperatures to generate specific diameter particles. This allows for efficient densification. Minimizing the acrylic fraction helped a little more.

Seeing two of my favorite yt channels talking about a science subject and sharing information is just beautiful :)

I agree, I also live in a desert gets hot during the summer around 120°f Although, I think while this is a great project with a lot of potential in these hotter areas it might be best as a cost saving measure as better insulation for already existing measures

There already is passive cooling for the desert. Look up evaporative cooling. And the cooling towers in India. L

As the desert has really low humidity you can use evaporative cooling,

I'll bet your ground temperature a few feet down is in the 60F range. Just one 50 or 100 foot loop would probably give you cold water to circulate in a radiator with a small pump to cool your house. If you do, let me know the results.

@@taciusathis method allows you to save precious water though.

Its also a coating... Coat.

Cool coating

Damn I missed that! This guy is Freaking legend with that jacket!

thief can use them it's unsafe

@@vjdas6 Also, reduced roof life will probably cost more than energy savings.

@@vjdas6freedom> safety

Shade all day long 😏

@@jmodified Actually shingles do better in shade. So its increased roof life if you can bother to trim your trees.

Wow, thank you!

but can't spell "ain't correctly.........

@@juststeve7665 It's a made-up word so it matters little anyway - "Are isn't" isn't valid grammatically. If we're following the concatenation guidance of conventional English, it'd be a'in't.

@@bluephreakr Surely ain't just means isn't or aren't. Where'd the 'are is' come from?

@@bluephreakr ...Are there words that aren't made up?

personally I think he explains too much

I thought the same thing!

​@@adairjanney7109idk is there such a thing as explaining to much? Lol like saying he knows to much need to silence him a little

I think he does a bad job of explaining it!

He goes into detail that is obvious (unnecessary) to serious observers. Additionally… there really is no practical application for this. Radiant heat works because heat goes up.- tie in cold water and you’re just making the floor cold. Even that depends on the type of flooring you want. Also, the vast majority of homes domestic and worldwide don’t currently employ any kind of geothermal or radiant heating system. (As such installation is usually done before the house is constructed).

Vernacular architecture is definitely the best way to conserve energy.

You said a lot of words but I still don’t understand wtf he did to make it better

@@xx_pcgamer_xx6866 house use fancy architecture so pull heat from house.

​@@jacobbaumgardner3406You might to simplify it further. Lol

uhhh like a solar chimney? passive solar cooling?

It's also the reason aerogel is simply the best insulator out there

Polyurethane foam is not filled with air. It traps the blowing agent and achieves an R-value about 50% higher than air.

This is why on a still cold morning, if you stand still, you will keep warm. Wind kills. And why loose clothes, like pyjamas are strangely warmer than tight fitting insulating clothes.

Yep - that’s right, and that is because there are less molecules bundled together unlike water - which is tightly bundled, and conducts heats fast.

interestingly, the architect of the Minoan Palace at Knossos, Crete, had a good practical grasp of natural air con - c.1400BC, rather impressive

@@MyMy-tv7fd tons of ancient muslim and persian buildings did the same. it was almost a necessity back then.

A book, Architecture Without Architects by Bernard Rudofsky, mentions this principle with many examples throughout history. Uts shows great insight how civilizations survived 1000s of years with electricity or AC.

*Without* electricity....

Actually it isnt and wasnt. Old houses are situated so they face the sun rise and set. They have windows placed to create even air flow. Hell the condos in California would stay cool all day if you kept the doors shut. Because of the concrete pads that had absorbed moisture. Then you leave the windows open at sunset and let the cold back in. Hmm a box with 2 holes on opposite sides what would happen if wind blew against it? The complicated parts would be how do we do this for skyscrapers or buildings with delicate instruments in it like servers? We need to control humidity and a system that free flows cant do that. Anyway cooling is simple when you have relative humidity and temps outside. Your foundation acts like a cave absorbing moisture and releasing it through the day. If humidity is too high you cant cool off. The biggest issue is heating. How do we move heat without wasting it.

Wow, thank you!

@@TechIngredients Ain't something to think "Wow" about. That probably sounds dick-ish, prima facie, but it isn't. if you chew on it, you'll soon realize that it's complimentary as can be, as we who attempt outside of the box critical/practical thinking, applied to VERY real (mostly third-world) problems, often tend to lose sight of the MASSIVE implications and direct lifestyle impacting effects that efficiently shaving a penny off of modern inefficiencies (and doing so by utilizing "Low-Cap" barriers to entry priced tech, WILL, most certainly, modify the cost of living by several pennies to "We The People" ... ... specifically in those areas of the Third World where I have Operated out of (Thinking "Horn Of Africa" in my recently retired Military mind/experience) and have personally seen the day-to-day life that the folks who have almost NOTHING left to spare in order for them to actively solve major, real-time day-to-day life's problems ... this inability DIRECTLY affecting their quality-of-living and keeping them SQUARELY strapped into the socio-economic shackles (of the back-most seats of the Struggle Bus that WE (Western ,First-World types, see as a huge hurdle. That Bus is running on maybe 2 of 8 engine cylinders, and just CAN NOT quite crest the peak of Poverty Hill, then becoming able to coast downhill toward the self sufficient zone. This is akin to clean water access or suitable food security. Without these things, I see desperate conditions that foster opportunistic straight-up SHIT-bags ... (i.e. Warlord types that view these good intentioned rural folks as merely expendable cannon fodder, at best) ... to continue to exploit the weaknesses inherent in the world below the Poverty Line. (War-Lords ... Wal-Marts ... you get the idea) That's a mouthful of too many words to describe the blunt fact that efficient cooling, without the massive energetic costs (compared to the - RELATIVELY speaking - quite wealthy Western Working Class' costs ... represented as a percentage of "expendable income") that stand between THEIR lives and everyone else's refrigerated life's experiences. I think deeply about this stuff as I watch the elders in the Djiboutian and Ethiopian and Somali tribal communities cave to the "paths of least resistance" corrupt Bullies, who dangle tiny snack sized servings of basic human needs in front of them, just like a carrot on a God-dammed STICK.. I'm looking at what you, and what the other commenters that are working on these particular puzzles, as being akin to the clean water solutions being put forth. These are impoverished People not able to compete as participants in the markets without permission from these heartless power manipulators who hand out Khat to the young Men (in the West, we just call them "Boys") so that they might use that stimulant with strong appetite suppressive characteristics, to pick up a Kalashnikov and BOOM ... ... We've got another child-soldier. And I'm no good at truncating a message like this into a TL/DR version. ("Clif" disapproves of the length of my "Notes". But I'll try. TL/DR: Your word "Wow" in reply to the last poster saying that you are changing the world, would indicate that you don't see yourself as working on something profound and life changing. But if you relax your eyeballs' focus, you can see farther out. MUCH farther out. Hope you followed my ramble and understood where I am coming from. I mean what I say because I've seen what I've seen. And we, as Human Beings, can do a Helluvalot better than we are ... at present. ROCK ON!!!

He is not kiding, this is important information.

Speaking of diamond, I wonder what using industrial diamond powder in the mix would do in regards to efficiency?

Want to buy some magic beans?

Thanks, interesting stuff to think about.

That's some good food for thought, cool stuff

(pun not intended 😅)

When water evaporates it takes away some heat from the environment next to it. There are some examples of passive air conditioning systems that use this (particularly ancient ones) edit: forgot to mention its called evaporative cooling

I think the sky is simply not able to be read by the camera because there's nothing close enough to bounce off of, it's not a real reading. So it defaults to the lowest measurement the camera can display. Likewise glass and reflective metals and certain plastics bounce or fail to "catch" the infared laser to be measured. Water cools as it evaporates and takes heat from everything around it.

No.

If he was doing it on a daily basis, I would concur. But for intermittent exposure - it's honestly just more hassle than it's actually worth.

well spotted. In the navy some jobs are 30 minutes kitting up and 30 seconds to perform the task but it's all Regs. Clearly in combat all this rigmarole goes over the side lol

I assume he ventilated the room afterwards? or it was big enough to dissipate the aerosol ~ that is why he didn’t mask himself 🤨

Honestly looks like he was just holding his breath.

Thanks! That indeed is next.

@@TechIngredients glad you'll be covering how to make this! I've been looking into making similar paints for my metal roof in Albuquerque

I am building a box truck to live in (in Florida). Anything I can do that can cool without turning on the AC is appreciated.

especially considering the electricity bill here is averaging almost $200! it's insane

Phoenix laughs at your Florida heat.

I was looking at using heat pipes to transfer heat which is just a evacuated tubing with refrigerant like ammonia and possibly some high surface area working area like sintered copper. But then life hit me and my lack of programming skills became apparent for data logging. I’m working on it, but if I just bought this stuff it would be $500

Just an curiosity question. Is there a gas that would expel moisture as well as provide or enhance transparency to IR? If we are sealing it would argon or others be of benefit? I've looked at the backyard geo thermal tie in on AC and that seems like it will still provide better cooling at 6' depth than the differential on this exchanger. My worry is that the heat sink of the back yard will eventually reach an uptake equilibrium with days of pumping heat into it.

My brother in christ how are you so learned but have never heard of a paragraph break. Thank you nonetheless for your comment.

@@test-sc2iy Yeah, that could definitely use a few paragraph breaks. I think it's just my mentality for comments on RU-vid; they just kind of progress in my mind as one fluid thought chain. Organizing into paragraphs is a step I would do if I were looking to write my own essay or publish my thoughts more professionally. But it might be worth a try to do it in a comment, lol.

hi there, hi agree with you that condensation would form a layer of water that overcomes the emissivity of the special coating. However, if I recon well, H2O itself has an excellent emissivity in the 9-13um IR window too, maybe 95% of a black body or so. One can thus engineer a system to constantly have a layer of condensed water, like a tiny pond, and be fairly happy with that too rather than going through the costs and hasselts of coating a "special" emissive layer.

Wow, thank you!

​@@TechIngredientsCare to demonstrate Iodine from kelp?

You also wouldn't want to walk over freezing cold floors, even in summer. I guess 15°C or so would be what you'd want to aim for.

@@Pystro People should wear open toe slippers in the summer, save a bunch of money on socks and save your heels walking on hardwood floor.

@@jacob1121 While that is a good advice in general, it won't solve the ice cold floor problem - at least not for everyone: Some people have pets, and sometimes you want to sit or lay on the floor. Also, you can feel if a floor is ice cold through some slippers, depending on sole thickness.

A heat pump in cooling mode is just a standard air conditioner. In a typical install with an air handler or mini split evaporators, having the evaporator below dew point is a feature - the evaporator is used to dehumidify the air as it cools it. Dehumidifying the interior air then also lowers its dew point. A properly configured air conditioner (or heat pump in cooling mode) should help with condensation issues, not cause them.

​@@davidlapierre4058 As mentioned, 99% or European residential housing do not have a standard air conditioner. They have radiators and (sometimes) in-floor heating, but that's meant to be used for heating, not cooling.

Not just to your nation. :)

@@cygnusx7 Others usually aren't very grateful

@@HadzabadZa I'm British and very grateful

@@cygnusx7 right. Think bigger!

Wonderful!

@@TechIngredients We're you a teacher or professor at some point in your life? You are very good at describing a multitude of science topics and keep people engaged in your creative projects. From jet engines to rockets and air conditioning you name it, you've covered so many topics, my kind of channel indeed. Would have loved to have you as a science teacher in high school even though your much beyond high school level teaching. P.S. I'm the guy that asked you before what you thought about nitric acid as an oxidizing agent in hybrid rocket motors and you said you didn't like it because it was too caustic and I would need some way to pressurize the container, I can't remember your exact response so please forgive me. I decided to pursue it anyways and you were right, Its hard to find a container for it and the spray nozzle must be made from a plastic designed for oxidizing acids. Not cheap, and I believe a graphite rocket nozzle would erode rather quickly. I've looked into 3D printing my own rocket nozzle that can hold up to the heat and corrosiveness of such a reaction. Hard to accomplish for an amateur rocket builder. Not to mention the toxicity. I'm going to keep pursuing that or hydrogen-peroxide still while practicing all safety precautions. Also, I wish you to revisit hydrogen production via electrolysis. There have been a few papers discussing urea as an electrolyte that can reduce the required energy needed for creating hydrogen. I plan on using carbon electrodes plated in copper and then nickle using urea as an electrolyte (also some KOH) to make an effective and cheap HHO generator. So no platinum. Also placing strong magnets in reverse polarity on each side of the cell will aid in the electrolysis producing more hydrogen hopefully getting more energy output to input ratio. This is all just from documents I've read on the subject. Robert Murray-Smith has made a few videos on the subject as well as his channel is devoted to energy production mainly, you should check him out if you haven't already. Thanks for sharing your vast knowledge with all of this.

Thanks! No worries, in our next video, we'll show you how to make it...cheap.

@@TechIngredients Been looking at costing for a 3D gyroid infill metal printed heat exchanger for custom HVAC ait-liquid but above my price range possible

Why not use calcium carbonate? Isn't that lime wash which people have been applying to the outside of buildings for a long time?

Henry Roof Coating, white, has this property. It is used on RV roofs, school buses, and other applications to reflect up to 98% of sunlight and heat. You can get it at Home Depot or any roofing supply.

Here I was thinking this was using the hafnium dioxide coating.

Thanks! One perk of working in the technology field is that we've gotten to meet some very skilled and knowledgeable people. It can even be a little intimidating.

@@TechIngredients well you are a wonderful communicator, and I was even able to mostly keep up. You got yourself and the team a new subscriber for sure!

I saw an article on this very topic somewhere. There's a large public building in Toronto, tons of glass, very big sun load. They use radiant cooling in the floors with a buffer tank and a mixing valve tied to zone hygrometers so the cooling loop is always a few degrees above dewpoint. They still have fan coils to catch the latent humidity and a few extra degrees of sensible, but it's waaaay smaller than it would have to be, compared to conventional.

Could they redirect/wick condensed water to somewhere it could evaporate, adding more cooling?

@@bakedbeings ehhh it would be counterproductive to dehumidify and then REHUMIDIFY. I've seen some info on indirect evaporative cooling that always seems to be 5 years away from commercialization. I myself nerded up (with zero practical engineering experience) on coupling the old railroad steam ejector chillers with desiccant beds that would be recharged with solar thermal. But in the end, it ends up being a Rube Goldberg contraption that would be twice as big, three times as expensive and one-fourth as efficient, as the plain old vapor compression AC systems in common use. But I do think a sea change in how we heat and cool our spaces is coming. This high-emissivity radiant technology is one of them. Simple, low-complexity and easily replicated using common hardware store parts. DIY solar thermal panels aimed south and DIY lunar panels aimed north. Sharing a buffer tank to store heat and 'coolth' as the seasons demand. This is not far from what Messana is doing with their radiant ceiling panels, except they use a Rheem Marathon tank and a air/water heat pump.

@@bakedbeings Not really. The problem is that it would often condense in the carpets or under the laminate floors.

@@bakedbeings condensing water wastes a lot of heat deficit. Granted if you evaporated it somewhere else you would be left with transport losses but still it is better not to unnecessarily condense water.

I am now wondering what makes south pole get colder than that?

I think its a bit of a "optical illusion". because most of the air above you is colder than the surface air, it only loses energy to the air above it. so very little infrared radiation reaches the surface from the air above. because for example, the air in the stratosphere is well above -50C, but the radiation it releases can't reach you. if I'm not mistaken its also a misconception with the greenhouse effect of the planet, its not that the radiation gets reflected back, the planet just get less efficient at radiating energy up to space.

@@MiniRockerz4ever That may have to do with airflow.

I too have used a FLIR camera at my work 20+ years ago and was surprised to see the blue sky was black and cold when the temperature of the air was over 100F.

@@MiniRockerz4ever he explains it around 2:30. The temperature of the sky is made up of the air column from the ground till space. That temperature will be lower on the south pole because it's colder at ground level.

So much waste can be overcome with a tiny bit of intelligence and periodic maintenance, but people are too stupid, too shortsighted and too incompetent for it to work.

Next, we'll show you how to make the coating.

Actually the @NightHawkInLight video is from 6 months ago (July 9 2022) and is named: "How To Make Infrared Cooling Paint (Electricity Free Air Conditioning)"

Glad it helped!

I'm pretty sure he already made a solar water heater. Those are very effective.

Thank you. Like anything, practice and if possible, film yourself.

"Honey, did you remember to flip our outdoor radiators?"

The problem is condensation and mold in air intake that can't be taken lightly with these systems. A water loop, with heat exchanger, is better in that aspect.

Since installing the earth tubes requires digging you may as well just skip the tubes and install tubing for a ground source heat pump if this is intended for a residence Much more effective really and manages humidity in the structure for increased comfort Only reason to do something like this is when you won't be trying to heat or cool the structure beyond what you get from the ground (greenhouse, maybe a garage) But as another commenter mentioned, better to make it a liquid circulating system and use a heat exchanger to keep things clean and tidy

​@@TheEmbrio The big advantage of geothermal air cooling is that you don't need to worry as much about leaks as with liquid cooling. What I think would be really interesting, is making a homemade air compressor which to pressurize pipes with heatsinks around them, which to get cooled by the intake air for a windmill at the bottom of a solar tower (aka. solar chimney) which to heat the air which rises and accelerates through the tube/tower/chimney pulling more air for the heatsink and windmill. I think such a system, although it would have plenty of disadvantages (such as needing a tall chimney/pipe/tower, which to be at least a few meters/yards tall), would also have the advantage of working passively while there is sunlight, due to the only moving parts being the windmill, the drive shaft (or alternative), and the air compressor, all 3 of which would be connected (maybe even welded) together, and the bearings needed for all of them. A few cheap imperfect mirrors (i.e. tinfoil + epoxy + tarp + frame) which to focus more light onto the solar tower, in order to cause faster air speeds, which to compress more air and cool the heatsinks faster. The compressed air would likely need a "drip pipe" going to the outside of the building, which to move the condensed water towards the outside, with a shut-off valve for preventing the humidity from completely escaping from the building in really dry climates.

Yep. One of my ideas is to make essentially large "heat pipes" and dig down vertically, then insulate the copper tubing going around them (that has water going through it) towards the upper parts. The efficiency of the heat pipes would help to cut down on the area and amount of materials needed. Not everyone can afford to, or has the space to, evacuate very long trenches and lay hundreds of feet of tubing, or dig to well like depths. Using heat pipes, you only really need to dig down to where the temps are pretty stable, and then thermally insulate the rest of it.

@@TheEmbrio the DOE.gov paper on it recommends specific tubing to reduce mold growth. My plan is to install dry-well condensation traps along with appropriate tubing. I'll be installing 150ft soon to see if it works.

Thanks!

Always always always wear a respirator when spraying.

Per sure to include the robotic voice reading the script.

I was thinking about that too

Exactly

I would think that one would naturally be more effective than this, but it also only works during the day. It would definitely make sense to add this infrared design to the chain. I wonder if there might be other passive cooling solutions that would be worth adding. A clay pot cooler might be useful during especially hot days. Its drawback is that it utilizes evaporation for cooling, so it is a waste of water. The challenge there would be finding a relatively simple way to collect and treat the waste water so that it does not waste money (and doesn't reek like hot sewage soup in the sun). Though depending where you are in the world, it could be damaging to the environment if too many people are doing evaporative cooling instead of treating their waste water and letting it continue elsewhere. Either way, I think this summer calls for a passive cooling drag race. I wanna see where they all stack up.

Absolutely!

Have you tried any of the popular chat bots yet? I refreshed most of what I learned in high school chemistry in just a few days of free time and I’m 28. It’s the next step in learning things quickly.

@@PinkFZeppelin which exactly name a few

@@namo6504 Chatgpt, bing chat, and bard are some examples.

@@PinkFZeppelin ohh thanks 👍

We will have no jobs soon

Using AC condenser heat to warm up hot water in the summer is a really smart idea. Just add a water pump switched on by the blower fan and circulate that hot water to and from a normal boiler. Doing that all day long it might never even have to switch on.

@@markm0000 it's a tad more complicated >< i believe only co2 based heatpumps can bring the temp up high enough for hot water, but surely you could have a small pre-warming tank, or maybe build the entire system with co2 as a refrigerant. There's a lot of little aspects like that though. I find it disappointing that there are all these building codes to increase efficiency, but they still haven't mandated heatpumps. They are by far the most cost effective way of reducing heating energy needs. We just did a mini-split in my brothers house, and we figure the payback period is only 4-5 years, and that's in a place with cheap electricity.

Tesla uses this approach in its EVs. The enabling device is called the “Octo-valve”.

That's scientist pr engineer vibes I think you're getting

You mean Heisenberg

More like a nerdy Robin Williams/Mork to me, and I love it!

Say you’re gen z without saying your gen z

@@bhavishankarHeisenberg is the drug criminal, Walter White was still the straight chemistry teacher

IMHO, Aluminium is used because of two properties that it has: 1) It is silver in colour and very reflective. 2) It has a self sealing layer of oxide that makes it quite suitable for outdoor use.

Oh no way I am the dumbest here. After this I'll probably watch YTP. 😂 I will watch it.

Thanks!

😁

cc