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Posted to alt.home.repair,sci.engr.heat-vent-ac,misc.consumers.frugal-living
Rod Speed
 
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Default prog. therm. and heat pump questions

John P.. Bengi JBengispam@spam@yahoo,com wrote

Why would anybody ever install a heat pump system?


Its cheaper than heating with other forms of electrical heating.

Another friend of mine's heat pump just bit the dust
here at -20C. Going to take weeks to get a part for it.
Pretty expensive portable electric heating going on in
that house right now.


That makes 9 heat pumps that will be removed
of my aquaintenances in the last few years now.



"Abby Normal" wrote in message
ups.com...
What is the time constant as that 60K heat pump warms up? Would it
ever reach steady state and a COP of 3? Well maybe when it was
running after the setback period ended.

60,000 steady state heat output, 20,000 load each hour hmm, wonder
how many times that will cycle on and off drawing LRA? Well if a dog
year is 7 years, a Nick year must be 3 years.

Maybe assume it takes 15 minutes to stabalize and work backwards from
there for your time constant.