Solar Water Heating Sizing

Sizing your solar water heating system basically involves determining the total collector area and the storage volume you ll need to meet 90 100 of your household s hot water needs during the summer.

Solar water heating sizing.

Many water heaters says olson are set between. In sizing a solar pool heater to a pool we consider pool size in area and gallons your desired temperature gain and other environmental factors such as wind and sun exposure. Before you purchase and install a solar water heating system you want to do the following. The solar domestic water heaters efficiency and performance will heavily depend on panel or collector and storage tank sizing.

Evaluate your site s solar resource. Estimate the cost and energy efficiency of a solar water heating system. Sizing solar hot water systems. One software tool that is available to calculate solar water heating system sizing is retscreen www.

Some companies sell one tank solar hot water systems the tank stores solar heated water and serves as a back up but most building owners keep the existing hot water heater as a back up and purchase a new storage tank for solar heated water. Sizing a solar water heater system. Sizing your solar water heating system involves determining the total collector area as well as the storage volume you ll need to meet 90 100 of your household s hot water needs during the summer. Typically 6 sq m of solar collectors for hot water support are sufficient for an average single family house.

Selecting a solar water heater. Also understand the. Solar storage tank sizing. Up to 1 5 sq m of solar collector area person.

Contractors usually follow a guideline of around 20 square feet of collector area for each of the first two family members. Most professional solar installers agree that solar domestic water heaters should adequately supply about 90 to 100 of a site s total hot water use during the warmest and sunniest months of the year. Investigate local codes covenants and regulations. Solar system contractors use worksheets and computer programs to help determine system requirements and collector sizing.

Over the year up to 60 of the average domestic hot water requirement can be achieved by a solar system with this size of collector. Second in our series on sizing a heater to your pool we now look at my favorite heating option solar pool heating. Determine the correct system size. Turn down the thermostat on your water heater to 120 to 125 f 48 to 51 c.

To properly size a solar water heating system you ll need to determine the total collector area and the storage volume needed to meet 90 to 100 percent of the household s hot water needs during the summer. Swhs are widely used for residential and some industrial applications. A simple guide is.