heat pump: heat swimming pool, cool house
Doug...@sprynet.com
install a heater for my pool since althought i face south, I have lots
of trees that shade the pool. To do this, it has been suggested that
I install a 5 Ton heat pump.
Now this seems a bit silly......I run 10 tons of compressors because I
can't use the heat out put of my home A/C ot heat the pool....and my
pool heater blows out cool air that could cool my home.
Does anyone make a system that allows me to install a single unit that
will both cool my home and heat my pool. I think some sort of
thermostat control would be needed so the house does not get too cool
or pool get too hot.
Any suggestions??
Richard J Kinch
>Does anyone make a system that allows me to install a single unit that
>will both cool my home and heat my pool.
Sure. More expensive and more trouble-prone than the usual, so hard to
tell whether it is more economical. Generally when you cool the house most
is when you least need heat in the pool, so the incentives are kind of
crossed.
HvacTech2
Hi Doug...@sprynet.com, hope you are having a nice day
On 09-Dec-01 At About 01:09:02, Doug...@sprynet.com wrote to All
Subject: heat pump: heat swimming pool, cool house
D> From: Doug...@sprynet.com
D> I have a 5 Ton A/C unit cooling my home in S. Florida. I also need
D> to install a heater for my pool since althought i face south, I have
D> lots of trees that shade the pool. To do this, it has been
D> suggested that I install a 5 Ton heat pump.
D> Now this seems a bit silly......I run 10 tons of compressors because
D> I can't use the heat out put of my home A/C ot heat the pool....and
D> my pool heater blows out cool air that could cool my home.
D> Does anyone make a system that allows me to install a single unit
D> that will both cool my home and heat my pool. I think some sort of
D> thermostat control would be needed so the house does not get too cool
D> or pool get too hot.
D> Any suggestions??
This would not be feasible. the pool would only heat when you needed cooling,
which would run when you didn't need it. but the cooling wouldn't run enough
when you needed pool heating. you're best bet is to get the separate pool
heater.
-=> HvacTech2 <=-
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CBHVAC
the pool to do what you are asking, however...the BTU output would NOT be
high enough depending on the size of the pool to make a dent in the temp of
the pool by more than 1 to 5 degrees..and, if you use a heat pump, then you
run into problems in the cooler months. Its better in a residential case, to
run a separate pool heater, and separate home system.
--
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<Doug...@sprynet.com> wrote in message
news:evb81ug1ojg4n6e77...@4ax.com...
John Hilt
On Mon, 10 Dec 2001 03:49:32 GMT Doug...@sprynet.com wrote:
>Does anyone make a system that allows me to install a single unit that
>will both cool my home and heat my pool. I think some sort of
>thermostat control would be needed so the house does not get too cool
>or pool get too hot.
Cooling your home and transferring the heat to your pool seems like a good
idea. What you need is some kind of heat exchanger clamped around the
compressor of your existing A/C unit, and a circulation pump that pumps a
water/glycol mix between this and a heat exchanger in the pool. This could
just be a spiral of stainless steel tubing.
The system should be controlled by a thermostat in the pool. When your pool
gets hot enough the circulation will stop and your A/C unit will go back to
normal operation transferring heat to the air.
It could be that you must install an extra fan that starts when the
circulation stops to prevent the fluid from boiling.
--
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- Logic, the art of being wrong with confidence.
Glen Duff
We own an old stone house in the Ontario countryside about an hour from
Toronto.
Our pool is quite large at 42' and I would really like to have a heat pump BUT
the problem is that when you want to heat the pool in May, early June and then
again in mid August through September, the temperature is cool enough in the
house. From mid June through mid August the pool is plenty warm and that is
when you might want to cool down the house.
I think the two are incompatible since we can't store heat.
Glen Duff
---------
Nick Keenan
One manufacturer is Whalen (see http://www.whalencompany.com/). They
are commonly used in office buildings, where a cooling tower ( a big
radiator) is put on the roof of the building, and water is
recirculated between the air conditioner and the cooling tower. I
just had one put in my office, and it says it can run on any water
supply -- a water tower, tap water, well water, or ground water. The
incoming water can be up to 90 degrees, and is heated about 10
degrees.
So you set up a system where if the pool is below 90, the water supply
for the AC is the pool; otherwise it's either your domestic cold water
or a cooling tower. Likewise, if the pool is below 90 the heated
water is returned to the pool; otherwise, it either goes down the
drain or up to the cooling tower. Four zone valves, a pool
thermostat, and a bunch of plumbing stuff from Home Depot and you'd be
all set ;) !
I am utterly unqualified to tell you if this would pay for itself.
One consideration is that you would probably still need a pool heater.
A big residential AC might be four tons, or 48,000 BTU. A small pool
heater is twice that size, and a big one ten times that size!
pwate...@gmail.com
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