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Solar water heating

Lush Company offers Solar water heating is the conversion of sunlight into heat for water heating using a solar thermal collector. A variety of configurations are available at varying costs to provide solutions in different climates and latitudes. Solar Water Heating systems are widely used for residential and some industrial applications. A sun-facing collector heats a working fluid that passes into a storage system for later use. Solar Water Heating Systems are active (pumped) and passive (convection-driven). They use water only, or both water and a working fluid. They are heated directly or via light-concentrating mirrors. They operate independently or as hybrids with electric or gas heaters. In large-scale installations, mirrors may concentrate sunlight onto a smaller collector. Freeze protection measures prevent damage to the system due to the expansion of freezing transfer fluid. Drain back systems drain the transfer fluid from the system when the pump stops. Many indirect systems use antifreeze (e.g., propylene glycol) in the heat transfer fluid. In some direct systems, collectors can be manually drained when freezing is expected. This approach is common in climates where freezing temperatures do not occur often but is somewhat unreliable since it relies on an operator. When no hot water has been used for a day or two, the fluid in the collectors and storage can reach high temperatures in all non-drain back systems. When the storage tank in a drain back system reaches its desired temperature, the pumps stop, ending the heating process and thus preventing the storage tank from overheating.

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