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Old 01-20-10, 02:28 PM   #4
AC_Hacker
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Quote:
Originally Posted by Xringer View Post
It seems like they are in the UK and not over here yet..Maybe since the USA is so anti-CO2??
I really don't think "anti-CO2" has anything to do with it. It is true that Europeans are much better informed when it come to issues such as global warming. I think it's embarassing to see how many Americans allow themselves to become so dis-informed about an issue of such inescapable importance.

It's much more likely that when corporations have found a sure way to take a large profit, we will see them for sale here.

The price in dollars for their small unit is $9489.491 + VAT. This would supply 15354 BTU/hr.

The price in dollars for their larger unit is $11996.149 + VAT. This would supply 30708 BTU/hr.

Both units have a COP of about 4.

Pretty expensive for a water heater, but pretty reasonable for a hydronic boiler, when you consider that comparing this system to GSHP where COP of 4 is the same, excavation costs are avoided.

Looks like the output temp is 149 degrees F, which is high for a ASHP water heater, but below the low end of the output temperature range of existing fossil fueled boilers.

This would suggest that the standard hydronic radiator deployment would be insufficient, and that more and/or bigger radiators would be needed.

However, hydronic floor heating, especially PEX-in-concrete (AKA: wet systems) would be dandy.

But then a properly designed wet system does the job using lower feed temperature of existing compressors.

Regards,

-AC_Hacker
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