Re: Thermodynamics_Solar Hydrogen vs. Central Electricity Generation
- From: pv+usenet@xxxxxxxxx (PV)
- Date: Tue, 30 May 2006 22:36:14 -0000
Doug Houseman <dhouseman232621mi@xxxxxxxxxxx> writes:
If we assume a 30 year life for the system and 40% solar availability
(solar effective light). you can expect that the system will produce
94320 solar effective hours and as a DC system - 86774 KWH. If you
I don't know where you live, but even at the equator in high summer you're
not going to get 40% solar availability unless you're using a 2 axis
tracking system, and that ain't gonna cost $3,800 installed per kilowatt.
I have a feeling your dollar figure is ignoring significant parts of the
system, and defines solar availability simply as 'the sun is out', and not
'at a useful power level'.
In our test rigs, we are seeing home owners having an efficiency of 74%
on the conversion of water to H2 and O2, the rated capacity of the
systems is around 84%. We find that weekly cleaning is required to keep
Even if this was true (which I doubt), it's irrelevant until you consider
the conversion back to electricity, which a) is inefficient as crap,
b) costs a fortune, and c) is not available commercially if you're not a
large industry.
If electricity could be produced at a third of the cost of the grid per
kwh, the grid would already be running from such sources, it's as simple
as that. Power producers watch costs to the fraction of a cent per kwh. If
you're doing it and they're not, it doesn't make any sense for you to do
it, unless you are in a far off-grid location. *
--
* PV something like badgers--something like lizards--and something
like corkscrews.
.
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