Nick Thomas Posted January 4, 2023 Share Posted January 4, 2023 Via a friend: https://www.pv-magazine.com/2023/01/02/residential-thermo-acoustic-heat-pump-produces-water-up-to-80-c/ Interesting concept, although I hope they can make it work with something other than helium. At ten bar, it *sounds* a bit scary, although I imagine it's actually less hazardous than an unvented cylinder. Link to comment Share on other sites More sharing options...
SteamyTea Posted January 4, 2023 Share Posted January 4, 2023 I think this is about the third thread about this HP. Bet it sinks without a trace. Link to comment Share on other sites More sharing options...
Nick Thomas Posted January 4, 2023 Author Share Posted January 4, 2023 Hmm, I did search for thermo-acoustic before posting but didn't find anything Link to comment Share on other sites More sharing options...
Nick Thomas Posted January 4, 2023 Author Share Posted January 4, 2023 Ahh, going via the company name - Equium - finds one. Link to comment Share on other sites More sharing options...
SteamyTea Posted January 4, 2023 Share Posted January 4, 2023 https://forum.buildhub.org.uk/topic/30898-new-type-of-heat-pump-coming/#comment-458733 Link to comment Share on other sites More sharing options...
mike2016 Posted January 4, 2023 Share Posted January 4, 2023 There was a video about it on YouTube recently: https://youtu.be/zBUvPaY3YOA Link to comment Share on other sites More sharing options...
gravelrash Posted January 4, 2023 Share Posted January 4, 2023 2 hours ago, Nick Thomas said: Via a friend: https://www.pv-magazine.com/2023/01/02/residential-thermo-acoustic-heat-pump-produces-water-up-to-80-c/ Interesting concept, although I hope they can make it work with something other than helium. At ten bar, it *sounds* a bit scary, although I imagine it's actually less hazardous than an unvented cylinder. I would be more worried at diesel engines running 2000bar in injector rail..but there has been no issues over the last 15-20years. Link to comment Share on other sites More sharing options...
SteamyTea Posted January 4, 2023 Share Posted January 4, 2023 1 minute ago, gravelrash said: I would be more worried at diesel engines running 2000bar in injector rail..but there has been no issues over the last 15-20years. A virtually incompressible fluid will have less energy in it than a compressible one, for the same pressure. It is why pressure vessels are tested with oil. Link to comment Share on other sites More sharing options...
JohnMo Posted January 4, 2023 Share Posted January 4, 2023 14 minutes ago, SteamyTea said: tested with oil Just to be pedantic - normally water, depending on vessel material and end user this water is treated to remove certain minerals etc. Large vessels are infrequently tested with air/nitrogen, because the stored energy within a compressed gas. Went to a heat exchanger manufacture once and the heat exchanger (printed circuit heat exchanger) was for a gas service and the company would only perform air tests. The test were completed ex WW2 bunker with 2m thick wall in case of mechanical failure. You had to witness the test via a camera in another building. The walls had big chunks out of then were a heat exchanger had failed in the past. 1 Link to comment Share on other sites More sharing options...
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