Solar Hot Water System Panel Size

X is your set point temperature typically 135f y is the well mains water temperature.

Solar hot water system panel size.

Use the solar panel sizing calculator to determine the right amount of paneling you will need to heat your pool year round. Sizing ratio 1 15 8 34 x y z. Having said that many 4 person households who are very water efficient get by just fine with a 150 litre system with 1 panel. In the midwest and atlantic states you will need one square foot of collector per gallon of tank capacity.

Z is the btu ft2 rating of the solar collector. Use the formula below to do this calculation. This particular solar water panel on average will produce 27 100 btu a day with mildly cloudy solar conditions. At the end of the day a good installer will look at your usage and advise you exactly what size to go for.

A properly sized solar panel system will raise water temperatures adequately. For an 80 gallon tank then you will need 53 square feet of collector. Using these output measurements we can determine how many square feet of collector we will need to heat a single gallon of water. By raising water temperature your swimming season can be extended in colder locations by as much as 100 and works year round in warmer weather.