hot air Archives – The Green Optimistic green tech news, since 2008 Fri, 13 Feb 2015 19:35:12 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 BluBox Thermal Fan Takes Heat from Ceiling to Floor https://www.greenoptimistic.com/blubox-thermal-fan-heat-ceiling-floor/ https://www.greenoptimistic.com/blubox-thermal-fan-heat-ceiling-floor/#comments Mon, 23 Jan 2012 19:08:23 +0000 https://www.greenoptimistic.com/?p=22117 The warmest (and most expensive) air in your home (or small business) is lazily floating around above your head looking for some way to escape. This is especially true if you make your heat with a Single Point Source (wood burning stove, floor furnace, wall furnace, etc.) or you have high ceilings, or (who would […]

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]]> https://www.greenoptimistic.com/blubox-thermal-fan-heat-ceiling-floor/feed/ 1 22117 The Stirling Engine (or hot air engine) Explained https://www.greenoptimistic.com/the-stirling-engine-or-hot-air-engine-explained-20080206/ https://www.greenoptimistic.com/the-stirling-engine-or-hot-air-engine-explained-20080206/#comments Wed, 06 Feb 2008 07:38:11 +0000 https://www.greenoptimistic.com/index.php/2008/02/06/the-stirling-engine-or-hot-air-engine-explained/ 1820, when steam engines operated everywhere, Robert Stirling, a Scottish vicar, and his brother James built a new engine. They used an outside burn, additionally hot air was sufficient for the operation of the engine. This principle has theoretically already been developed by the English flight pioneer Sir George Cayley twenty years earlier. Stirling proceeds […]

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