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

[Paul Eldridge]

Well, actually, I am paying for it, but that's OK and here's why: over 
the past 24-hours, and with two back-to-back showers under its belt, our 
Nyle ran for two hours and twenty-seven minutes before shutting off and 
consumed a grand total of 1.23 kWh (see: 
http://i362.photobucket.com/albums/oo69/HereinHalifax/HPWH-Day2.jpg). It 
also did double duty as a dehumidifier.  Now, at roughly 550-watts, our 
regular dehumidifier is one of our home's major power guzzlers and 
offsetting two hours and twenty-seven minutes of its runtime saves me 
1.35 kWh.  At this point, I'm 0.12 kWh to the better, but from this I'll 
subtract the 0.54 kWh consumed by our lower level ductless heat pump, so 
that leaves me with a balance owing of 0.42 kWh.  And at 13.3-cents per 
kWh, that puts our water heating costs for the past 24-hours at less 
than 6-cents.  Somehow, I'll live with the pain [throws back of hand to 
forehead and faints].

Cheers,
Paul


----- Quote -----

>/  On 10/16/2012 5:55 PM, Paul Eldridge wrote:
/>>/  So, if I've got this right, you're saying that we would require 14.35
/>>/  kWh of energy to satisfy this 10 kWh of water heating demand but, beyond
/>>/  that, we would need an additional but as yet indeterminate amount of
/>>/  energy for the ductless heat pump to replace the heat that had been
/>>/  removed from the conditioned space?  So, in all, we might require
/>>/  somewhere between 15 and 20 kWh of energy, say, to accomplish what a
/>>/  conventional electric water heater can do for us with ten?
/>/
/>/  Yes basically.  Aren't you glad you aren't PAYING for it all.
/>/
/>/
/>/  Thank You Kindly,
/>/
/>/  Corwyn/