refrigeration https://b2012overleven.runboard.com/t609 Runboard| refrigeration en-us Fri, 29 Mar 2024 12:54:57 +0000 Fri, 29 Mar 2024 12:54:57 +0000 https://www.runboard.com/ rssfeeds_managingeditor@runboard.com (Runboard.com RSS feeds managing editor) rssfeeds_webmaster@runboard.com (Runboard.com RSS feeds webmaster) akBBS 60 compressed gashttps://b2012overleven.runboard.com/p2951,from=rss#post2951https://b2012overleven.runboard.com/p2951,from=rss#post2951seen on TV: Compressed gas [in factories it's usually ammonia] is expanded [allowed to escape] through a copper spring that's in salt water; when a container with sweet water is submerged in the salt water, it will freeze (even though the salt water isn't frozen, it being still liquid at 2 below freezing). So, basically: press the button on a canister of compressed gas and shoot it through a looped copper tube that's submerged in salt water. The issue is then: how to compress gas? The answer will offer refrigeration.nondisclosed_email@example.com (TheLivingShadow)Sun, 14 Apr 2013 17:12:14 +0000 off-grid refrigerationhttps://b2012overleven.runboard.com/p2681,from=rss#post2681https://b2012overleven.runboard.com/p2681,from=rss#post2681 A Zeer Pot is an ancient device used to cool things. It was invented by the Egyptians about 2500 years before Christ was born. It works on the principle of evaporative cooling. It's still in use today in North Africa and I'm going to tell you about it and show you how to make and use one. youtubenondisclosed_email@example.com (TheDoctorIsInTheHouse)Sat, 13 Oct 2012 15:20:15 +0000 refrigerationhttps://b2012overleven.runboard.com/p2488,from=rss#post2488https://b2012overleven.runboard.com/p2488,from=rss#post2488forum 1:1 potassium nitrate to water will suck the heat from the water.nondisclosed_email@example.com (TheLivingShadow)Sun, 15 Jul 2012 13:00:08 +0000