Anyone else heard of Hilsch tubes. They can be used to create temperature differences from almost any temperature air (above 0K of course!).
This seems to compare favourably to the usual Freon-Adiabatic-Expansion regimes we are used to.
It seems to have been a technology that fell by the wayside.
Look 'em up.
This seems to compare favourably to the usual Freon-Adiabatic-Expansion regimes we are used to.
It seems to have been a technology that fell by the wayside.
Look 'em up.
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Re: Hilsch Tubes
Tue, March 30, 2004 - 9:00 AMYeah, I've heard of Hilsch Tubes, though not for quite some time. I actually had a friend who owned a sailboat and found a manufacturer who constructed a version to use in refrigeration. Quite simple yet amazing in it's ability to both heat and cool air. I definitely don't think that it has fallen by the wayside, however. After reading your post I did a quick search online and found a multitude of applications that I wasn't even aware of. -
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Re: Hilsch Tubes
Thu, April 1, 2004 - 1:08 PMThanks John.
I looked up and did find some commercial applications. I no want one!
Now imagine a large ring running underneath a city which people can use to draw heat (or cold!!) from. We could recycle so much waste heat couldn't we? The houses use the principles gained from Hilsch tubes / Swimming pool heaters to make better use of ambient energy.
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Re: Hilsch Tubes
Thu, April 1, 2004 - 6:52 PMYeah,
That is one of the first large scale applications that should even be considered. Can you imagine the energy savings each individual household could have. Wow! I wonder what the cost for the development and implementation of a project like that on a smaller scale model (say a planned community) would be.
Erik, I definitely like the way your thinking! Your right about the myriad of commercial applications. Unfortunately, they're all about the Benjamin's. Most are created for easy marketing and quick revenue generation. It's to bad investors can't see the long term value and even profitability for an application such as you've described. Man, someone needs to make one just for an individual home as a model application. -
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Great link on UTES
Fri, April 2, 2004 - 7:24 AMwww.worldenergy.org/wec-geis..._1_16.asp
2. Underground Thermal Energy Storage (UTES)
2.1 Background
Development of Underground Thermal Energy Storage (UTES) systems started in the 70's with the purpose of energy conservation and efficient utilization of energy resources including renewables. Today, there exist several applications in various countries such as Japan, China, USA, Canada, Germany, Belgium, The Netherlands, Sweden, Switzerland, Finland and France. Within the Implementing Agreement "Energy Conservation Through Energy Storage (ECES)" of the International Energy Agency (IEA), a group of experts in Annex 8 from Belgium, Canada, Germany, Sweden, The Netherlands, Turkey and USA is working on the implementation of UTES systems.
The best medium for thermal energy storage is the underground where a large volume is both available and invisible. The ground has the capacity to store thermal energy over long periods for seasonal purposes. In addition, the technique is very robust and simple, requiring no fancy technologies. There are three thermal energy storage methods in the underground:
Storage in pits, tanks and rock caverns
Storage in aquifers using Aquifer Thermal Energy Storage (ATES) systems
Storage in ducts using Duct Thermal Energy Storage (DTES) systems
According to the State of the Art Report prepared by Annex 8 experts 1, among these systems ATES and DTES have become economically and commercially viable in many countries. These systems are explained below.
<B>If any country needed UTES it is the US!!!!</B>
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