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In response to your comment on the [EWB SFSU] page,
Sorry to be a pest. I invented the "mechanical mathematician" last summer (a new simple appropriate tech way to make a parabolic dish or mould), and I used it to make a large cob and kitchen foil solar cooker. (Which worked well). Then I used it to make a tracking solar accumulator which I am currently testing. I made 2 new designs for appropriate tech trackers for it. I built one and it works. But the other one (the clock based tracker) has more potential and I have NOT built it. Any engineers like to try it? It is at solarcooking.org on their tracking page. (Link in recent news there) It would be awesome if engineers would take an interest in any of this stuff! A team of half good engineers could do justice to it. Brian White
- Thanks for your idea, we currently have a page of project ideas one of which aught to be a solar cooker. Feel free to place a link to your designs on that page. One idea that I have been kicking around is making a solar water distiller with a parabolic dish collector. Also, are you aware of the Solar Cooking Wiki? Also, I see that you have produced a video and http://www.approvideo.org might be interested in adding your video to their list.
- Keep up the good work and if we decide to go with a solar cooker, you will be hearing from us.--David.reber 13:41, 9 May 2008 (PDT)
Rowan, I emailed you a few minutes ago. Hope it helps. Let me know if you need more info, Brian
dual dish solar cooker
I need basic input to the dual dish solar reflector idea. I believe that if the 2 dishes are the same size, are set up so that the center of gravity is on the equatorial axis at equinox, that the thing will remain balanced throughout the year. Can anyone confirm this? Brian Gaiatechnician 00:26, 19 June 2010 (UTC)
Yes, I think that will be true, usually anyway. The centre of mass of each of the two dishes will be on the axis at the equinox. As the seasons progress, the dishes will move through equal angles, one "up" and the other "down". If the axis about which each dish rotates to follow the seasons is coplanar with the polar one, which would usually be true, the centres of mass will move equal distances in opposite directions, so the thing will remain balanced. David Williams (DOwenWilliams)
My name is Rowan and I am going to build a model pulser pump for my appropriate technology class. I have looked at your videos and explanations of the pump and the place where I have to make a conceptual leap of faith is in the underground chamber. Is there a specific shape that lends itself well to this design, I am having trouble with the idea of large air bubbles forming under small pockets of water in the air pump. If you have any more specific information about this or other aspects of the pump please let me know it would be greatly appreciated. My email is firstname.lastname@example.org Thanks
Pulser Pump Advice
I am looking at pulser pumps for a small project to optimize the size of the inlet and outlet pipes so that the most water can be pumped for a stream. I am just starting the project but would love any advice you have on the topic. --A.Dacho 19:26, 24 March 2010 (UTC) I hope to get myself together to put guidelines on a pdf on the pulser pump page soon. Thanks Brian
Solar power tower
Hey Brian, I just finished up on a schematic for a solar power tower which could be used on rooftops (as you too proposed). See the article. KVDP 08:39, 17 May 2010 (UTC) Thanks, I am not sure that sending the power down into a "power well" will work so good. I think the reason for "power tower" is that the mirror directs a bit more light to the tower. (Its surface area is well utilized). But maybe I am wrong on this. Thanks for making the effort. Brian