Sun, 10 May 2026 02:46:25 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11570&Focus=192395#Comment_192395 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11570&Focus=192395#Comment_192395 Sun, 29 Dec 2013 14:31:52 +0000 palebluedot
It strikes me that his idea might use an enormous amount of energy in the manufacture of the glass spheres, and that, as a 1.5 metre diameter sphere seems to focus down to an area of about 300 x 300 mm, the efficiency gains might be not worth the energy used in the manufacture.

But I'm no engineer, and I know a lot of you folks are. Would anyone care to have a look and tell me what they think?

The link to an article is here: http://www.designboom.com/technology/spherical-glass-solar-energy-generator-by-rawlemon/]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11570&Focus=192399#Comment_192399 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11570&Focus=192399#Comment_192399 Sun, 29 Dec 2013 18:31:24 +0000 jamesingram http://www.youtube.com/watch?v=2wM2Vqw1YjY
Jon , who occasional posts here has been doing some DIY experiments in that area .
http://www.greenbuildingforum.co.uk/forum114/comments.php?DiscussionID=11327&page=1#Item_9]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11570&Focus=192403#Comment_192403 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11570&Focus=192403#Comment_192403 Sun, 29 Dec 2013 19:08:41 +0000 SteamyTea There may be some benefits in low light levels, say under 400W/m^2, but another £150 quid panel may be cheaper and easier if you have room.
I also think that any sort of 'magnifier' is not that brilliant in cloudy conditions (try setting fire to paper with a magnifying glass on a cloudy day)]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11570&Focus=192418#Comment_192418 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11570&Focus=192418#Comment_192418 Sun, 29 Dec 2013 23:53:39 +0000 palebluedot
It all seems a bit doubtful to me!]]>