Re: Parlaiment Committee on Nuclear Power
- From: John Beardmore <wookie@xxxxxxxxxxxxxxxxxx>
- Date: Mon, 24 Oct 2005 00:19:38 +0100
In message <tn0nl1lqau8ofbh0u65u8pa34d86pv88bh@xxxxxxx>, David Hansen <SENDdavidNOhSPAM@xxxxxxxxxxxxxx> writes
On Sun, 23 Oct 2005 11:15:08 +0100 someone who may be John Beardmore <wookie@xxxxxxxxxxxxxxxxxx> wrote this:-
Agreed, but solar thermal doesn't usually displace electricity, so much as gas, oil etc.
Solartwin argue that 20% of the environmental benefits from their competitors systems are lost due to using high power electric pumps.
Yes - but if ST ever go bust, will you be able to replace one of their pumps ?
And how will you feel about maintaining the polycarbonate front in 10 to 15 years time, possibly before the product has paid for itself ?
Imagination have also gone for the low flow, low power, solar powered pump approach.
Yes - it's an approach I like, but
a) from memory the 'parasitic power' to mains powered pumps
looked less than that in DTI tests,b) smaller mains powered pumps could be used,
and
c) proper differential temperature control may well be better
than a simple 'PV in the sun' control.However, a Stirling based Generator would suffice if one wanted to do such a conversion.
It would, but it wouldn't be cheap.
Indeed. Did I see a figure of £3-4000 (installed) for a gas boiler with Stirling engine electricity unit?
Sounds as if it might be about right, but I've not seen a price, and the only unit I've seen in the flesh was under test at a university.
This provides power in localities, even to individual households, without any need to rely on the transmission network. Granted that the power generated is not enough for all the needs of a house
Unless the wind is blowing with nobody home. (Or they just don't use much power ? It does happen !)
People's electricity meters, if they have one with an aluminium disc, do indeed run backwards for much of the day. Of course they don't run backwards very fast compared to how fast they run forwards when a washing machine is heating water.
Yes. 'Net meetering'. But is it legal and contractually OK ? Very grey area !
Question is, when will "All new residential and non-residential development (either new build, conversion, or renovation) will be expected to incorporate on-site renewable energy equipment to provide at least 10% of the developments energy needs" ?
'Cos it sure aim happening at the moment. Maybe 'son of Clear Skies' will help, but right now most builds I'm involved with are designed by the clueless who may want or tolerate a little green garnish on the side.
There is a small step in the Westminster parliament at the moment http://news.bbc.co.uk/1/hi/sci/tech/4284502.stm
Yes - good news !
Maybe I should hook up my spare PVs in the garden.
Cheers, J/. -- John Beardmore .
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