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1

As previously stated, heating the water directly is a lot more efficient and cheaper. I'd like to add that it's also a lot less complex of a system. You only need (a lot of) tubing, paint it black and that's it. Replacement parts are easy to come by, both in terms of availability and price. Possible repairs in the future do not require expert knowledge and ...


0

You need to describe the power/amperage of the motor that runs the fan. In any case, the answer is that you would need quite a big solar system to run the typical attic fan. A typical 20-inch high velocity fan uses about 2.5 amps. So, to run the fan for 4 hours would requre 10 amp hours. A large, roof-type solar panel produces about 5 DC amps and you will ...


7

How much energy do you need? In four months you spend $7500, so assuming you heat using natural gas, that would indicate a consumption of about 19,000 cubic meters. At 10.8 kWh per cubic meter, we're talking 200,000 kWh; in four months that's an average power requirement of 70 kW. Can the Sun help? Reasonable solar output in New York is around 5 kWh/m2 ...


2

To reduce your energy costs you have a few options (some taken from comments and not from the post). First if your temp is set to 83.5 that is the largest part of your problem. A lower temperature would be desirable. The "best" range for swimming is 77 - 82. If your not swimming turn it down to the 60s or lower. If you are swimming then 77 in the winter ...


1

It might not be the most aesthetic solution, but a better way to heat your pool with solar power is to paint it black rather than white/blue or whatever it is. Or spread black foil over /under the surface when not in use. I've used that for a small (3m dia, 0.6m deep) pool, very effective and low maintenance (as long as you ensure water flow at both sides)....


11

This has already been said in one answer - but I want to say it again so that it is very clear. Generating electricity from solar only to then turn around and run electric heaters for the pool is not an efficient way to go at all. Overall such system will likely be less than 10% efficient in terms of solar energy conversion. Go with a solar water heater ...


8

You have a pretty big pool by residential standards but I still am surprised it is costing you that much... almost $2k per month! Assuming a price of $.90 / therm (average in the NY area, according to some random site I found) and the numbers on this US Energy Star page, that's more than double what you should be spending for a 1800sf pool in New York. ...


33

PV panels are ~15% efficient. Hot water panels are much more, and probably much cheaper. Way more efficient to just heat the water, rather than convert to electric and then to heat. Maybe with the exception of a heat pump... $$$



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