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Author Topic: Subambient cooling paint  (Read 566 times)

Offline Willy

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Offline onepower

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Re: Subambient cooling paint
« Reply #1 on: February 20, 2023, 07:05:09 PM »
How To Make Infrared Cooling Paint (Electricity Free Air Conditioning)

Thanks for the link and this is an interesting concept I have looked at before.

This effect relates to thermo(heat)dynamics(motion) and free energy. The laws of thermodynamics basically describe how energy is conserved and heat/work are mutually convertible. However "heat" is only a measure of how fast the atoms are jiggling or a physical effect we call kinetic energy. The outdated concept of thermodynamics and heat forgot to include electrodynamics ie. the electric and magnetic fields.

Simply put, thermodynamics only considered the kinetic energy of the atom and didn't include the fact that said kinetic energy could be converted into electromagnetic energy. This would appear to violate the laws of thermodynamics because an area could become hotter or colder with no apparent flow of heat in or out of a closed system. The flow of energy is electromagnetic wave energy not heat as the kinetic energy of jiggling particles.

A good example of a FE inventor who seemed to violate the laws of thermodynamics using electrodynamic effects is Viktor Schauberger. He described how a volume could expand and become hotter or contract and become cooler. This is the opposite of what we would normally expect to happen. It was an odd predicament because many experts claimed he violated the conservation of energy because he violated the laws of thermodynamics. However this is not true, energy is always conserved but we still don't understand all the ways it could be transformed. So we could violate the laws of thermo(heat)dynamaics(motion) but not the conservation of energy because there obviously not the same thing.

I think the video link is a good example of how thermal energy can be transformed into electromagnetic energy. The next obvious step would be to force the kinetic to EM transformation into an active system versus the passive system in the video.


« Last Edit: February 20, 2023, 10:10:12 PM by onepower »

Offline lesleyharrell

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Re: Subambient cooling paint
« Reply #2 on: February 27, 2023, 08:55:35 AM »
It's fascinating to think about the potential ways in which energy can be transformed and utilized. It seems that there is still much to be discovered and understood in this field.

I agree that an active system utilizing this concept would be a promising direction to explore. It could potentially lead to more efficient and sustainable cooling solutions that don't rely on electricity.

Offline panyuming

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Re: Subambient cooling paint
« Reply #3 on: February 27, 2023, 03:51:58 PM »

Thanks Willy for sharing。

My understanding is:
The reflectors are surrounded by air. The reflected radiation hits air molecules and heats the air. Air again

The heat is transferred to the reflector, so the temperature of the normal reflector is not very low.

The method introduced in the video is to select the main reflected wavelength at the atmospheric infrared window.
So in this way, the radiation of this wavelength passes through the air, mainly the air that surrounds the reflector.
If the air temperature does not rise, the reflector only emits energy and does not receive energy, and the temperature decreases.

In addition, he said: During the day, the sun shines and it only drops by 2 degrees. It can drop by 20 degrees at night...
Illustrate this anti

The emitter not only reflects the foreign light, but also concentrates the energy of the reflector itself into the atmospheric infrared

The wavelength of the window radiates out.

Snowflake structure, although can reflect 98% of outside light.
But it does not have the ability to convert its own heat and energy into the wavelength of the atmospheric infrared window.

In the video, only the temperature is said, and the heat is not raised. 'Not very scientific'.

If it is made into a practical reflector or heat radiator,
A major indicator is how many watts of energy are radiated per square meter. Or how many calories or joules per second.
If compared with an air conditioner, how much area is needed.

According to the blackbody radiation map, the 300K4uM condition is preferably about 10W per square meter.
Compared with the 2000W of the air conditioner, a reflector of 200 square meters is required.

Another algorithm:
Assumption: the room is very well insulated. As long as the heat generated by people and objects in the room is released,
The temperature is balanced.

One person = 70W, refrigerator = 100W, computer = 30W.
That is, with a radiation capacity of 200W, it will do. 500W is better.
=20 square meters ~ 50 square meters.

It should be made into a reel like a capacitor. in order to achieve the usable area.
In one volume, the heat radiated by barium sulfate cannot radiate into space.
Instead, the surroundings are heated again, and then the heat is transferred back to the barium sulfate plate.

It has to be done like this:
A plate with barium sulfate with a layer of black aluminum plate on the opposite side.
The energy radiated by barium sulfate is received by the black aluminum plate through the air.

The temperature of the black aluminum plate will rise.
Add a fan to the back of the black aluminum plate to take away the heat.
There is also a fan on the back of the barium sulfate board, which brings room heat.
Then keep a good air path and roll it up. At least a 4-story structure. It can still be done.