http://www.greentechgazette.com/index.php/wind-energy/magenn-air-rotor-system-for-wind-power/ Fri, 14 Oct 2011 07:07:23 +0000 hourly 1 http://www.greentechgazette.com/index.php/wind-energy/magenn-air-rotor-system-for-wind-power/comment-page-1/#comment-40 Nanook Sun, 01 Jun 2008 08:20:42 +0000 http://www.greentechgazette.com/index.php/wind-energy/magenn-air-rotor-system-for-wind-power/#comment-40 The problem I see with a system like this is that helium is a small molecule that is difficult to contain. Consequently it tends to slowly, or not so slowly, leak away. That's why helium party balloons go flat after a few days. Helium is relatively expensive since it is such a small percentage of air and must be obtained by fractional distillation of liquefied air. I wonder if the economics of replacing lost helium will result in economical power production from these units. The problem I see with a system like this is that helium is a small molecule that is difficult to contain. Consequently it tends to slowly, or not so slowly, leak away. That’s why helium party balloons go flat after a few days. Helium is relatively expensive since it is such a small percentage of air and must be obtained by fractional distillation of liquefied air. I wonder if the economics of replacing lost helium will result in economical power production from these units.

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