Pool size: 18'x75'x6.5' Lap Pool
Looking forward to any suggestions or comets.
NV
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I am curious... These systems seem to require a ton of electricity (50 - 60 amp. breaker required). I build in Southern CA where we pay about $0.28 / kWhr.
How do these type systems compare with standard fossil fuel (natural gas) heaters in terms of cost to run.
I am thinking of a ground source system, with either drilled wells, or large field layouts.
Also, what is the advantage of a GT system as opposed to simply installing a heat pump? (which I think would be classified as an air source system???)
Thanks for your input...
Dave@fluiddynamicspools.com
Jim Acord said:
I work for a geo-thermal heat pump manufacturer here in Florida though we supply them all over the world. Geo thermal is very energy efficient and can be used with a variety of water sources. In the south we mostly use wells but are fully compatible with a variety of closed loop (shallow or deep) systems. We use two heat exchangers, 1 on each the source and pool side. On our smaller ones we use a titanium heat exchanger which eliminates pool side corrosion. On the source side an external plate heat exchanger can be used if the quality of the source water is suspect. We have many installations 15-20 yrs old. I'm not sure what your requirements are, whether it's an inside or outside installation, temp desired, year round or seasonal, blanket or no, etc.
Quick run off our sizing program for seasonal use (April thru Oct) on a 66k gal pool in Il. to 80 degrees, you would need to recoup 15' heat during the coldest part of the season. You would need 7,300,000 Btus or 2pcs of a 215,000 btu heaters based on a 24 hour run time. I apologize if I'm breaking any rules as I don't post here often but you can go to Aquacal.com for a free sizing program and technical info.
Best,
Jim