evacuated tubes vs. flate plates [RE-wrenches]

[Tom Lane]

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Think China equals glass --there are 5,000 ET MANFACTURER,S in China !!!!!! 
The Chinese use evacuated tubes to hold foods such as hot soup.

Gatortom

----- Original Message ----- 
From: "Conrad Geyser" <conradg at cape.com>
To: <RE-wrenches at topica.com>
Sent: Tuesday, November 20, 2007 3:37 PM
Subject: Re: evacuated tubes vs. flate plates [RE-wrenches]


>
> Hugh,
> Thanks so much for that iltelligent observation.  Why are the Chinese so 
> into evacuated tubes?  Is that low incidence gain of significant value?
> The only other theory I can come up with.is that evacuated tubes use less 
> copper (expensive) but more labor (cheap).
> Conrad
> Cotuit Solar
> ----- Original Message ----- 
> From: "Hugh Piggott" <hugh at scoraigwind.co.uk>
> To: <RE-wrenches at topica.com>
> Sent: Tuesday, November 20, 2007 3:39 AM
> Subject: Re: evacuated tubes vs. flate plates [RE-wrenches]
>
>
>>
>>>>  ETs are inherently more intricate, delicate and complicated.  They are 
>>>> the Porsche and the FPs are the Toyota.
>>
>> I recently installed some chinese evac tubes on my own roof.  I am very 
>> pleased with the output and the price was not bad, but I don't have much 
>> experience of solar HW.  I do wonder how long they will last.
>>
>> What I was going to say was, I read in a recent edition of Renewable 
>> Energy World, that most solar HW in the world is actually evac tube and 
>> the reason is that the vast majority of Chinese solar HW uses them.  Not 
>> so common elsewhere, but china has by far most of the installed capacity 
>> of solar thermal systems.
>>
>> So I guess they are more than a gimmick if they have most of the market 
>> already.
>> -- 
>> Hugh Piggott
>>
>> Scoraig Wind Electric
>>
>> http://www.scoraigwind.co.uk
>>


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