I am going to put a mini-split heat pump system in my addition, 4
9+9+12+12 kBTU head units, the outside unit is 36k and it can throttle
down pretty low. I gotta order the lines and cabling soon to get it in
the walls. My calculations show the whole thing needing only 18k to
heat/cool it, so this should be enough to add a bit to the rest of the
house when it is cranking. These things are pretty efficient and easy
to install in new work, and even in existing houses if you can easily
route the lines from outside or a basement or something.
--R
On 12/4/11 11:27 AM, MG wrote:
Yes, I think those are the ones I looked at. The only problem with
them is that for the size I need it would not split to enough cooling
points inside. If I remember two smaller units would also not split
enough, can't really remember now. Then there was also the problem
that I did want to use geothermal cooling which was and as far as I
know still is not available in those type of units.
The other down side of those units is they pump freon around rather
then chilled water. With the water units the individual cooling units
can be over-sized due to the self throttling of the water flow. That
way a smaller chiller can be used since not all the units will be
going full out at any one time and probably not at any time due to the
shape of and insulation in my house (dome). In the winter any heating
needed can also be done using the same system. It would also be a lot
easier to make changes in the system to see what might be a better
location of cooling units. Yeah I do like to experiment and see 'what
if'.
Manfred
Date: Sat, 03 Dec 2011 22:02:56 -0500
From: Allan Streib <str...@cs.indiana.edu>
Subject: Re: [MBZ] More OT - HWT
There is a system called a mini-split or multi-split that sounds like
what you are describing. It doesnt work with your radiators but it's an
installed outdoor unit connected to one or more interior units. I
believe they can work in AC and/or heating modes.
Allan
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