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deede1 (November 30, 1999 at 12:00 am)
funny thing is we did a project on biofuels!
roidroid (November 30, 1999 at 12:00 am)
i mean CTRL-F5
roidroid (November 30, 1999 at 12:00 am)
it's working for me. try pressing ALT-F5
lazyperfectionist1 (November 30, 1999 at 12:00 am)
When did this vid become unavailable?
sparkloweb (November 30, 1999 at 12:00 am)
High efficiency solar cells are expensive to produce and requre rare and toxic chemicals.
If algae is less efficient, but non-toxic and a lower cost, it is the superior technology. Time will tell.
WarzSchoolchild (November 30, 1999 at 12:00 am)
Hi 'roidroid' a hunch, but check out:-
"The Argument principle" (or Cauchy's argument principle)(Wikipedia)
It is relevant to 'feedback' mechanisms. I think feedback may influence Chlorella growth? The literature often reports sudden colony collapse, it can be very rapid! If you have heard the horrid noise made by a PA system when the mike feeds back, the same may be true with some artefact in the algai plant?
Introduction of fresh stock, in a timely intervention might help prevent it?
WarzSchoolchild (November 30, 1999 at 12:00 am)
In 1992, we did a BBC Tomorrow's World slot, we brought a huge Diesel Engine into the studio, and ran it on dried Chlorella.
"Rheological properties of Chlorella pyrenoidosa culture grown heterotrophically in a fermentor" Zheng-yun Wu1, 2 and Xian-ming Shi1 (June 2008)
This BBC demonstration replicated research from the early 1930's. at the Carnegie Inst. of Technology.
Two stage bio-enrichment of Uranium. 1st with Uranophilic, 2nd with U235 sensitive Chlorella. another application.
roidroid (November 30, 1999 at 12:00 am)
oops, they are Emcore cells. Cited as 38% efficient.
roidroid (November 30, 1999 at 12:00 am)
i'm not sure if that % figure is for space or terrestrial. I don't think it takes solar concentrators into account, but i don't think it makes much difference outside of the lab.
I've recently seen a rough test result in 30% realworld efficiency by GreenandGoldEnergy (a Suncube solar tracker using Zirtec panels). So i'm confident that they are 35% panels.
singedrac (November 30, 1999 at 12:00 am)
Algae is cheaper since it grows faster and uses the entire plant instead of just part of it. |