Solar thermal: providing up to 65%
of household hot water needs
Solar heating harnesses the power of the sun to provide solar thermal energy for solar hot water and solar pool heating. A typical residential solar water-heating system reduces the need for conventional water heating by about two-thirds. It saves energy, reduces utility costs, and uses clean energy.
Solar hot water for buildings
Most solar water-heating systems for buildings have two main parts: a solar collector and a storage tank. The most common collector used in solar hot water systems is the flat-plate collector. Solar water heaters use the sun to heat either water or a heat-transfer fluid in the collector. Heated water is then held in the storage tank ready for use, with a conventional system providing additional heating as necessary. The tank can be a modified standard water heater, but it is usually larger and very well insulated.
Solar hot water for pools
Solar heating systems are a very efficient way to heat commercial and public pools. Solar collectors are typically installed on rooftops near the pool. The pool filtration system pumps pool water through the solar collector and the collected heat is transferred directly to the pool water. Solar energy can provide as much as 60% of the energy needed to heat a pool. The solar collectors can also be used to cool a pool in hot climates or during peak summer months by circulating water through the collectors at night. The collectors lose heat by radiation to the sky.