DIY Origami Isothermal Tube Reactor/Air Fryer

Joined
Dec 19, 2024
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Location
Jefferson City, MO
This is a drawing of an Isothermal/Solarthermal Generator. It uses a linearly parabolic mirror to heat up Water or Paraffin Wax. These are Phase Change Materials(PCM.) The prime mover is actually a bellows. This would be a small scale generator for charging your phone or your laptop or something like that. The bellows pushes air through a small copper pipe that is inside of a larger pipe. I like to design the Water version of this generator for use when the ambient outdoor temperature is at or below 0°C. The linearly parabolic mirror will heat up the mass of the water in a pex pipe with a small copper pipe running through it. So, we have the surface area of the shadow of a mirror and the mass of PCM. When the water is the pex pipe is heated to 1°C, we close the bellows, the bellows will push air through the copper pipe and refreeze the water taking 250cal per gram of water of latent heat. The air goes through a small rotary vane motor and turns an alternator.isothermal.png
 
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The linearly parabolic mirror could be made of aluminized mylar glued to a piece of a plastic bucket.

I want to experiment with making a mold for a silicone part that can be attached to a golf ball with a washer, machine bolt, and ball bearings to turn it into a small approximately positive displacement rotary motor.

There are many ways to make a bellows using origami. The bellows can also be made to close using a small electric motor and a string. Like, the small motor for the bellows plugs into the USB on the laptop, and the alternator plugs into a small DC rectifier to charge the laptop. People will be impressed with my DIY-origami-steampunk-golfball-solar laptop charger
 
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Sure its not an excuse to eat chocolate bars to salvage mylar film? joking aside, i hope your fabrication skills enable a viable prototype and positive data after tests. i fear any frequency/rate of bellows pulses achieved would fall short by an order of magnitude or two tho, but that is just a gut reaction.. good luck..
 
I think that bellows could prove to be a lightweight-cost effective air compressor. I could, of course, use an electric air compressor for this system. I would need springs and parallel redundancy. Three bellows. It would be lighter than a compressor head and air tank.

I also amused myself by learning that a bellows with a lever has mechanical advantage and that a bellows shaped like an accordion could have mechanical advantage by using pulleys.
 
I think I can get closer to the dimensions for this project. Let me rap about it. Where the surface area of the shadow from the mirror is cast on the Earth because of the different solar potentials from elevation and latitude changing the thickness of the atmosphere, and the reflectivity of the mirror, which is like 90% on a cheap first surface mirror. What if I make a generator at sea level and I take it to the top of a 14,000' mountain and malfunctions because it has 200w more solar power and everything is out of tune?
 
The mirror casts a 6m^2 shadow on the Earth at sea level and generates 2000w of thermal but at 14,000' it is 2200w. So, the water experiences a thermal run away when it is charging, because the air compressor isn't powerful enough to remove the amount of heat from the water in the amount of time it could do at sea level. So, the ice thaws out to 1°C and becomes liquid, but the air compressor can't meet the required flow rate to discharge the latent heat from that amount of mass. The phase change from liquid to solid releases a huge amount of heat compared to the water changing from 2°C to 1°C. So there is no boost in power from the solar panel. The energy turning the rotary vane motor and the alternator is only the power of the air compressor plus that small amount of heat.
 
How big would a mirror be that is 1 foot long have to be melt 132grams of ice to water, from 0°C to 1°C, deltaT, in 6mintutes? 7363.83joules per minute, I don't think I want joule seconds. 122j/s?

What if I call the solar potential for 1m^2 is 145w at sea level? And the mirror casts a 1m^2 shadow on the ground. It is 90% efficient at reflecting and applies 130.5w. I think a square meter mirror could melt 132g of ice in 6 minutes. Then, how much air do I have to flow through it to refreeze the 132g? It would depend on the temperature of the air in my compressor. If I use an electric two stage compressor head the temperature of the air will be lower after it goes through the compressor. So, if it is 0 degrees it might be -1degrees. When I am designing isothermal generators, I often use the two stage air compressor head outside of an ice chest, while the air cylinder for that compressor head is inside of the ice chest. I use the ice chest to keep my compressed air at 0 degrees, or whatever the optimum temperature is for the generator.

V = π(R² - r²)h
3.14(0.5" - 0.1875)12
8.095cubic inches of water if I make a 1" pex tube with a 3/8" copper tube one foot long.

132.65mm per foot.
44183joules per foot

132.65g x 80cal =10560gramcalories
10560 = 44183.04joules


Can an array of linearly parabolic mirrors help process optical data from telescopes?

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What happens if you put concentrated solar on a peltier tile? If I point the PhotoVoltaic Cells into the mirror, they will generate a higher voltage than when they are pointed up at the sun. If the focal rectangle of the linearly parabolic mirror is partly photovoltaic, it 25% of that concentrated area will be converted to electricity. It would be nice if that amount of energy powered the compressor.

Like, the Peltier Tiles point towards the mirror and charge the ice up to liquid. While the PV are pointed to the sun, that voltage is applied to the Peltier Tiles. Maybe I need to put the Peltier Tiles on a different side of the focal area for nighttime operation I could throw a body warmer in there.
Then, the spit turns around and points the photovoltaic cells at the mirror and the bellows start moving.
 
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In the summer time, I would need to make the "spit" out of metal or glass to contain parafin wax as the PCM. It would be cool to also have a spit for breeding taq bacteria for PCR dna sequencing.

 
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I want to make a tube Reactor/generator for homeless people that makes precursors for processing rape kits and keeps their tents warm. They sell the precursors to labs and it is a really good way to make money and get into an apartment.
 
what in tarnation doge.png
 
Also, wild edibles are high in oxalates. I would like to attempt to measure how quickly epigenetic changes occur in plants with traditional breeding methods. If I control the inputs of the Plantago Major including the macronutrients and minerals, how many generations of reproduction have to occur before I am looking at a domestic species?
 
Are you a real person?

Why are you posting random crap on this forum?
 
Its not random. I am a real person. I am pretty jazzed about how nice this solar tube reactor is. Using the PV cells as a filter, I have another option for automating processes by "taking off" solar radiation as electric current. Two other options for reducing the temperature of a reaction would be turning the mirror away from the direction of the sun, or removing the tube from the focal point as in a revolver of tubes. Lending the device to automation.

"Latent Heat of Fusion" can be considered to be an exothermic reaction. When water or wax become solid, latent heat is released when the hydrogen forms loose bonds. This device also has the ability to regenerate thermal energy from exothermic reactions as electricity, to use in endothermic reactions, or for powering other lab equipment in the field.
 
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I'm with you Amberwolf. Maybe if I did drugs this thread would make sense.

AussieRider
 
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