Evacuated Tubes [RE-wrenches]

Todd Cory, Mt. Shasta Energy Services toddcory at finestplanet.com
Sun Nov 18 01:18:11 PST 2007


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I wonder how the btu/sq ft of the two technologies compare?

Todd


Kurt Albershardt wrote:

>
> Good points, but I am not as convinced on the cost.  The combination 
> of 'new improved' copper pricing and overseas ET production the 
> differential has narrowed quite a bit.
>
> We are planning a 52 ET collector array in southern NM (6000', but 
> snow is rare) which should meet ~50% of the mid-winter heat load on a 
> 1938 mid-rise brick/concrete building.  If suitable roof area is a 
> limiting factor, ET quickly becomes the obvious solution.


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