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Posted by udarrell on July 16, 2006, 12:23 pm
Pete C. wrote:
>Zaphod wrote:
>
>
>>Hi Folks,
>>I live in lower Michigan about 30 miles north of Indiana. My niece's
>>husband who does heating and cooling has talked me into switching to an
>>air transfer heat pump with electric back up. I currently have an oil
>>furnace and Iive in an old two story farm house that has about 1,500 sq
>>ft.
>>
>>I have been thinking of an idea and have not yet discussed it with my
>>nephew and I thought I would post it here and see if I get any
>>comments.
>>
>>I was wondering if the outside unit of an Air Transfer type heat pump
>>could be put in a small greenhouse during the winter so the air around
>>it would be warmer during the day?
>>
>>Or maybe even put the outside unit in a small enclosure and run vents
>>from the house to it so that when the heat pump is warming or cooling
>>the house it would also be warming or cooling the air around the
>>outside unit?
>>
>>Would this even help at all in keeping the electric use down?
>>Thanks, David
>>
>>
>
>Recommend ground source (aka geothermal) heat pump over air type.
>Vertical or horizontal loop as your lot permits. Ground source is more
>efficient due to stable ground temperatures vs. variable air
>temperature. They are also don't have a somewhat noisy outdoor condenser
>unit. Pete C.
>
>
In lower Michigan, what type of heat source are you using now, NG,
propane, or fuel oil?
The air source heatpump would only be useful during the seasonal changes.
Geothermal will be costly upfront.
You will save the most money with a one-time cost by doing everything
you can to reduce the heat-gain heat-loss of your home.
That includes reducing air infiltration!
Try to get a scroll compressor and a TXV refrigerant control on the
evaporator.
Don't go any high than 13 or 14-SEER as there will be no payback in your
climate.
Get the high efficiency on the heating side of the equation. Read all
the info you can!
- udarrell - Darrell
--
Air Conditioning's Affordable Path to the "Human Comfort Zone Goal"
http://www.udarrell.com/air-conditioning-total-heat-enthalpy-latent-heat.html
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