Sun, 07 Jun 2026 06:35:38 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174383#Comment_174383 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174383#Comment_174383 Wed, 24 Apr 2013 14:18:13 +0100 Sprocket
http://eetimes.com/electronics-news/4412642/IBM-Airlight-boost-solar-energy-10X

Though, am I missing something?
Don't you think they sound a bit big for 25kW?

25kW of regular 20% efficient PV isn't all that large.

So with micro-fluidic cooling and 80% efficient triple-junction PV cells I would expect to get 25kW from something more like the size of a suitcase.]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174392#Comment_174392 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174392#Comment_174392 Wed, 24 Apr 2013 14:48:08 +0100 SteamyTea https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174398#Comment_174398 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174398#Comment_174398 Wed, 24 Apr 2013 15:25:48 +0100 Ed Davies https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174402#Comment_174402 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174402#Comment_174402 Wed, 24 Apr 2013 16:04:24 +0100 djh https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174407#Comment_174407 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174407#Comment_174407 Wed, 24 Apr 2013 16:24:57 +0100 Ed Davies https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174435#Comment_174435 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174435#Comment_174435 Wed, 24 Apr 2013 19:55:38 +0100 jms452
'the cost of commercial dishes should drop to about $250 per square meter--three-times lower that existing photovoltaic concentrators today, according to IBM.'

Compared to basic silicon PV at ~$150/m2 @15% this is slightly cheaper and you get the heat for free!]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174447#Comment_174447 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174447#Comment_174447 Wed, 24 Apr 2013 21:35:39 +0100 chuckey So water cooled PV, so thats a pump, super pure water +anti freeze, heat exchanger - Do I need more heat in the summer? or some other way of keeping the cooling water cool. Not going to be used in the home, never. I doubt if it will be used in this country except for a few very specialized areas - Tomato growing in Guernsey? Might be some other spin offs from this project that could be useful.
Frank]]> https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174460#Comment_174460 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10573&Focus=174460#Comment_174460 Wed, 24 Apr 2013 22:26:32 +0100 Ed Davies Posted By: chuckey"of high-concentration photovoltaic cells by as much as 10-times by using micro-fluidic water" . So 10 X 20% = 200% efficiency?No, 10 times the output. Since the input is increased (by an only vaguely specified amount from 300 to 500 up to 2000 to 5000 concentration) by using a bigger dish or focusing the light more tightly the change in efficiency, if any, is also not specified.]]>