Ground-coupled heat exchanger

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  #16  
Old 12-23-2019, 03:12 PM
ton80 ton80 is offline
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Default Using Pool as heat sink/source for house A/C

I have not run the numbers because there are too many assumptions to make for calculations. However, ground coupled heat exchanger and geothermal systems need a heat/cooling source/sink that dissipates the energy to maintain a suitable steady temperature range in the heat sink (pool in this case). Without dissipation of transferred energy, the heat sink/source will gradually get hotter in summer and cooler in winter until the HVAC system no longer can do the job and the pool probably will not be usable.
Remember the heat pump system pumps heat from the house and rejects it to the heat sink( atmosphere or swimming pool) in summer. In winter it would pump heat from the pool to send heat to the house. IMHO, There will be minimal heat rejected to the atmosphere in summer and very little heat absorbed into the pool in winter. That is why the geothermal systems have a lot of pipes or underground water tables to interact with and maintain a usable temperature range
  #17  
Old 12-23-2019, 03:49 PM
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Tom C Tom C is offline
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We have never heated our home with our cooling/heating system. We only need the cooling system (but it is good to have the heat should we ever need it).

I am thinking I could make a closed loop to/from the pool that would encase the A/C coils and a small pump to cycle the water back to the pool.
  #18  
Old 12-23-2019, 04:11 PM
ton80 ton80 is offline
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PHP Code:
We have never heated our home with our cooling/heating systemWe only need the cooling system (but it is good to have the heat should we ever need it).

[
B]I am thinking I could make a closed loop to/from the pool that would encase the A/C coils and a small pump to cycle the water back to the pool.[/B


You are correct that If you have a gas fired heater , you do not need the heating part of the typical HVAC system. In much of TV there is no natural gas and the heat pumps also do the heating.

In the summer the heat rejected from the house is transferred to the heat sink ( pool in your example). The pool temperature will continue to rise until either the pool gets too warm to use and you shut off the A/C or the A/c struggles to function since it can not condense the refrigerant. You need some way to dissipate the heat from the pool to the atmosphere or some other place. That is how an A/C system works.
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heat, exchanger, ground-coupled, lot, high

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