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I saw a very promising AC technology at CES in january that people may find interesting: https://www.oxicool.com/ https://www.oxicool.com/ I don't have the mat

I saw a very promising AC technology at CES in january that people may find interesting: https://www.oxicool.com/ https://www.oxicool.com/ I don't have the material science or chemistry background to know how effective it is, but I hope everything they claim holds water, it sounds pretty good. There's also a DIY water based AC with pipes and a cheap pump you can find widely on the internet, but I haven't done it yet. Here's an example https://www.instructables.com/id/Hollis-homemade-AC/ https://www.instructables.com/id/Hollis-homemade-AC/ ... In the comments one poster suggested a toilet tank as a reservoir, that sounds promising.

yourapostasy 6y ago
That's neat and I'm going to keep an eye on it. The -15° F ambient differential somewhat limits its usefulness, and I'd like to see an induction-powered heater as an option instead of conduction-based heating. I'm guessing the 10-year lifespan is due to the fan bearings and the molecular sieve lifetime, and I'd like to see the overall system lifespan increased by 10X. Would be interested in the papers behind this tech, as I think there are a lot of caveats they're glossing over. [1] seems to be a paper on adjacent technology. [2] seems to indicate the service lifetime of the molecular sieve is the controlling factor in the estimated lifecycle. 10 years sounds like the upper range. [1] https://aip.scitation.org/doi/abs/10.1063/1.4822041?journalCode=rse https://aip.scitation.org/doi/abs/10.1063/1.4822041?journalC... [2] http://www.yyindustry.com/news_show.asp?id=28 http://www.yyindustry.com/news_show.asp?id=28
- kristopolous 6y ago
  They're trying to get version 1 out the door. Hopefully there's a dramatic improvement and optimization curve still available given it's such early days still
leoedin 6y ago
They bury it slightly, but in the FAQ: "The primary energy for HomeCool™ is derived from clean open flame burn of natural gas. This can be converted with an optional kit to propane and also hydrogen* (*once commercially available)." It burns gas. It may work in a similar manner to absorption refrigerators often found in RVs. https://en.wikipedia.org/wiki/Absorption_refrigerator https://en.wikipedia.org/wiki/Absorption_refrigerator Burning gas isn't exactly a clean energy source. In fact, we need to be aggressively exploring ways to stop burning gas for heating - not starting to burn more for cooling!

yourapostasy 6y ago

That's neat and I'm going to keep an eye on it. The -15° F ambient differential somewhat limits its usefulness, and I'd like to see an induction-powered heater as an option instead of conduction-based heating. I'm guessing the 10-year lifespan is due to the fan bearings and the molecular sieve lifetime, and I'd like to see the overall system lifespan increased by 10X. Would be interested in the papers behind this tech, as I think there are a lot of caveats they're glossing over. [1] seems to be a paper on adjacent technology. [2] seems to indicate the service lifetime of the molecular sieve is the controlling factor in the estimated lifecycle. 10 years sounds like the upper range. [1] https://aip.scitation.org/doi/abs/10.1063/1.4822041?journalCode=rse https://aip.scitation.org/doi/abs/10.1063/1.4822041?journalC... [2] http://www.yyindustry.com/news_show.asp?id=28 http://www.yyindustry.com/news_show.asp?id=28

kristopolous 6y ago
They're trying to get version 1 out the door. Hopefully there's a dramatic improvement and optimization curve still available given it's such early days still

leoedin 6y ago

They bury it slightly, but in the FAQ: "The primary energy for HomeCool™ is derived from clean open flame burn of natural gas. This can be converted with an optional kit to propane and also hydrogen* (*once commercially available)." It burns gas. It may work in a similar manner to absorption refrigerators often found in RVs. https://en.wikipedia.org/wiki/Absorption_refrigerator https://en.wikipedia.org/wiki/Absorption_refrigerator Burning gas isn't exactly a clean energy source. In fact, we need to be aggressively exploring ways to stop burning gas for heating - not starting to burn more for cooling!