What is an absorption refrigerator's ideal heat temperature?

[DavidWish]

I am asking the "engineers" who have good knowledge about using this technology to cool fog catchers with parabolic trough mirrors in order to extract water from the air.

I understand that a heat source is needed. While many rv fridges use propane and I do see values of 187c / 387F as numbers in another thread, those figures may not be around the ideal values and they seem to apply to an ammonia water chemical reaction.

I'm trying to make something as safe as possible that is freely shared and can be manufactured by anyone that chooses to do so.

So, in addition to the ideal heat temperature, and of course its ratio to the surrounding environment, for the ammonia water absorption process, would there be a better chemical to use that operates at approximately the boiling temperature of water? If so what would that process be and is it safer and there are the materials easily obtained?

The idea here is to make this as cheap as humanly possible.

I can easily get insane temperatures from the mirrors I've created. They are incredibly efficient and dirt cheap. I just don't want anyone getting blinded or fires getting started or things exploding from too much pressure.

My design uses a mechanical system to flip the trough over if it runs out of water, so that it cannot overheat, as a final safeguard, but that is just heating water and that is something I am trying to extract. Perhaps a different solution in heating tube would be better than water itself for this application, but reclaiming the water turned to steam would probably work on the need for water side of things, and going no higher than 212F is safer.

I don't want to be leaking any sort of weird chemicals into the environment if at all possible.

Any help, information and resources any of you could possibly supply would be greatly appreciated.

I invented the technology for measuring what is drawn in 3D. It was used in an emergency by the University of Arizona to help fabricate the Phoenix Lander which made the definitive discovery of vast amounts of water ice just inches under the red regolith on Mars in the northern latitudes.

I have successfully rebuilt an automatic transmission and a manual transmission and I made a clock with wooden gears while in high school. I also work in engineering. My job title is Exorcist 1st class, because I beat the devil out of the details. However, this particular area is completely outside of my area of expertise.

Life is Most Important in Life is The Most Important Truth in Life

I am trying to help life. I am not trying to make a business doing this.

Thank you,

David

[Old-Biscuit]

Worked for a major utility company that in cooperation with the DOE did a Molten Salt Generation Plant
1000's of mirrors directed the sun's rays towards a collector tower and heated the molten salt which then was pumped thru piping to a heat recovery boiler to produce steam and turn a turbine/generator set to produce electricity for distribution onto the power grid.

Yes it produced power
Yes it proved functional
NO it was NOT cheap, efficient means of producing electricity
Mirrors were high maintance.....required extensive cleaning every night
Molten salt was abrasive and worn the lined stainless tell piping out. Numerous on-going repairs

Helium in an ammonia based absorption fridge has been used vs Hydrogen with marginal results but due to cost of helium and less efficient process it was discontinued


Ammonia based chillers have been in use commercially since 1850
Ammonia refrigeration is the most cost effective and energy efficient method of processing and storing frozen and unfrozen foods.

Absorption fridge ammonia based coolant solution
325*F electric heater element transferred heat for boiling of ammonia (conductive)
350*F propane heat transferred heat for boiling of ammonia (radiant)

Good luck on your endeavor to reinvent the wheel

[TandW]

First, welcome aboard,Davey!
Second,

[DavidWish]

Thank you both.

I have awareness of those plants and their losses. Including big single dish and smaller ones that use Sterling engines. I could see up-front their their costs were too much.

Indeed, these projects are not cost efficient on the level of mass production.

My mirrors are dirt cheap in comparison. I am not trying to reinvent the wheel.

I am trying to extract water from the air with no electricity whatsoever for watering plants with a dirt cheap process night and day.

350F is about 150psi. As such, to use ammonia will require a pressurized system and is not as safe as I would like. I would like to keep the temperature at 212F or less and stay away from things like Freon 11.

Take care.

Edit: I got laughed at in on-line forums when I proposed using the lengths of the sides of an object in a bigger than less than relationship to each other to get orientation cutting information of soild raw materials that require they be orientated in the correct direction to a cutting device.
https://patents.google.com/patent/US6928331

[TandW]

I saw a device that does just that yesterday while I was streaming Dust. It did not end well for the operator.

[DavidWish]

I am going to use steam (reclaiming the vapor as water) to use over and over again. I will run a small piston driven steam engine when the pressure is within range, and that will be connected to an air compressor and a large tank. I will use the water condensed the bottom of tjat large tank and also use the air from that large tank to do work, but run the the air through a custom dryer using the Coriolis effect and gravity. I will then reclaim the water from the used air.

I like the idea of being able to extract water from the air and get usable power to run a small generator or some air tools.

Thanks for your help everyone much appreciated.

[DavidWish]

Originally Posted by TandW

I saw a device that does just that yesterday while I was streaming Dust. It did not end well for the operator.

So what exactly is this dust thing that you keep mentioning? Does it have anything to do with RVing or are you using your senior memner status here to troll the new accounts?

[TandW]

It would be a lot more fun to extract water from a Freeze-Pop.

[Old-Biscuit]

How are you planning on making this contraption mobile for RV use?

[AnotherMike]

Originally Posted by DavidWish

Thank you both.

I have awareness of those plants and their losses. Including big single dish and smaller ones that use Sterling engines. I could see up-front their their costs were too much.

Indeed, these projects are not cost efficient on the level of mass production.

My mirrors are dirt cheap in comparison. I am not trying to reinvent the wheel.

I am trying to extract water from the air with no electricity whatsoever for watering plants with a dirt cheap process night and day.

350F is about 150psi. As such, to use ammonia will require a pressurized system and is not as safe as I would like. I would like to keep the temperature at 212F or less and stay away from things like Freon 11.

Take care.

Edit: I got laughed at in on-line forums when I proposed using the lengths of the sides of an object in a bigger than less than relationship to each other to get orientation cutting information of soild raw materials that require they be orientated in the correct direction to a cutting device.
https://patents.google.com/patent/US6928331

Looks like others have been where you are trying to go...
This found in under a minute on Google:

https://www.smithsonianmag.com/innov...uds-180962705/

https: // http://www.britannica.com/video/1863...ter-Chile-Aloe

[TandW]

Since there is no mention of exhausting the engine to a condenser, which would be wasteful in and of itself, perhaps this exhaust could be piped to an eductor modified to maximize a propulsive force. Unless of course he intends to use a 2 stage engine. Still yet, there is a problem with lubricants contaminating the condensate.
Something to think about when meandering down the highway in your RV.

[DavidWish]

Originally Posted by Old-Biscuit

How are you planning on making this contraption mobile for RV use?

Originally Posted by Old-Biscuit

How are you planning on making this contraption mobile for RV use?

Hi,,
I am planning on making this a kit where all of the parts can fit in a box and bought for extended camping in dry locations.

I have heard from some that it could possibly be detrimental to large civil projects if getting necessities does not really require them.

I don't really play into that logic. The whole purpose for these large-scale civil projects of which people collaborate on and do do a fine job in creating is to help life and not to suck the public funds dry needlessly. Just keeping them honest. If local water extraction, creation or whatever can be made so that it is accessible to everyone and is acceptable and usable than those funds can be used for other public infrastructure projects. You can think of it as an emergency water kit in an RV for now. You would even be able to fill up the tires if need be.

Thank you for asking and thank you for everything you've done. We can do a lot better for everyone and now is the time to get busy making sure that it will never be catastrophe, if at all possible.

You have upheld the truth of the importance of life with your service.
I have no intention of letting that go to waste.

[DavidWish]

Originally Posted by TandW

Since there is no mention of exhausting the engine to a condenser, which would be wasteful in and of itself, perhaps this exhaust could be piped to an eductor modified to maximize a propulsive force. Unless of course he intends to use a 2 stage engine. Still yet, there is a problem with lubricants contaminating the condensate.
Something to think about when meandering down the highway in your RV.

Yes I'm just getting familiar with two stage compression cycles and do have concerns regarding contamination filtering etc. That includes using superfluous materials that could leach into the water. Exhaust heat going to waste, etc. I haven't built the thing yet. It'll definitely have room for improvement in lots of places. Safe and works, efficiency later.

I am planning on running my designs past some people who work with steam who have degrees to help me tune it in once functioning.

Water storage is another issue. UV ozone chlorine charcoal sand etc.
Small high pressure tanks are expensive. For those with an RV and solar battery electrical systems this will be able to be used to help generate some electric current to be stored. They will not be on the level of efficiency of a photovoltaic solar collector, but adding collectors to increase output on the basic charge system will be absolutely dirt cheap.

That's the plan anyway. I have to get busy on some other stuff right now. One other reply to respond to and back to work.

Take care.

[TandW]

Remembering when my "friends" let the air out of my tires. Got them back up with a bicycle tire pump. Whew!!!