temperature Archives – The Green Optimistic green tech news, since 2008 Sat, 07 Mar 2015 19:09:14 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 How To Make a Low Temperature Differential (LTD) Stirling Engine https://www.greenoptimistic.com/how-to-make-a-low-temperature-differential-ltd-stirling-engine-20080405/ https://www.greenoptimistic.com/how-to-make-a-low-temperature-differential-ltd-stirling-engine-20080405/#comments Sat, 05 Apr 2008 06:17:40 +0000 https://www.greenoptimistic.com/?p=262 LTD stirling engines are interesting. They harvest the temperature difference of the environment versus a cold object, and using this they power some pumps. I don’t know the efficiency of this stirling engine, but it would be a nice idea for the hot areas of the world to put in some ice in your car […]

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]]> https://www.greenoptimistic.com/how-to-make-a-low-temperature-differential-ltd-stirling-engine-20080405/feed/ 3 239 The problem of storing pressurized hydrogen https://www.greenoptimistic.com/the-problem-of-storing-pressurized-hydrogen-20080130/ https://www.greenoptimistic.com/the-problem-of-storing-pressurized-hydrogen-20080130/#respond Wed, 30 Jan 2008 09:59:19 +0000 https://www.greenoptimistic.com/index.php/2008/01/30/the-problem-of-storing-pressurized-hydrogen/ The thorny problem of how to store hydrogen fuel safely for future vehicles and portable gadgets could be solved by simply storing it in nanoscopic scrolls of carbon. Scientists in Greece say they have found a way to make so-called “carbon nanoscrolls” store more hydrogen than any other material. By adding impurities to rolled sheets […]

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]]> https://www.greenoptimistic.com/the-problem-of-storing-pressurized-hydrogen-20080130/feed/ 0 61 BMW's Gasoline and Steam Hybrid Vision https://www.greenoptimistic.com/bmws-gasoline-and-steam-hybrid-vision-20080129/ https://www.greenoptimistic.com/bmws-gasoline-and-steam-hybrid-vision-20080129/#respond Tue, 29 Jan 2008 20:51:08 +0000 https://www.greenoptimistic.com/index.php/2008/01/29/bmws-gasoline-and-steam-hybrid-vision/ Certain parts of a car’s engine can reach temperatures in excess of 1,500°F. With this in mind, the engineers at BMW developed a way to boost efficiency: Transform that otherwise wasted heat into energy the engine can use. The resulting Turbo- steamer reclaims more than 80 percent of the heat lost from the engine’s exhaust […]

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