[Greenbuilding] Nyle Geyser HPWH - Preliminary Results (was HEAT PUMP WATER HEATER)

Corwyn corwyn at midcoast.com
Tue Oct 16 13:26:09 CDT 2012


On 10/16/2012 12:44 AM, Paul Eldridge wrote:

> Let's say, for argument sake, that our DHW demands are 10.0 kWh a day
> and that our Nyle HPWH has a COP of 2.3.  The Nyle itself will consume
> 4.35 kWh, so the balance that is stolen from our conditioned space is
> 5.65 kWh.

A better way to think about it is, 10 kWh is stolen from your living 
space, and compressed into your water heater.  This compression requires 
4.35 kWh.  Much of that 4.35 kWh ends up as heat from the machine which 
might end up back in the living space (or not).  How much isn't clear, 
but it seems unlikely it is ALL of it.


Thank You Kindly,

Corwyn

-- 
Topher Belknap
Green Fret Consulting
Kermit didn't know the half of it...
http://www.greenfret.com/
topher at greenfret.com
(207) 882-7652




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