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Jiangsu YuPu Solar Energy Co., Ltd.
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Name: Linda
Tel: +86-513-87287659
Fax: +86-513-87287659
Mobile: +86-18252802090
E-mail: sales@yuputyn.com
              yupusolarenergy@hotmail.com
Add: NO.288West Fushou Road Rugao City, Jiangsu Province, China 226500
MSN: yupusolarenergy@hotmail.com

12、What is a solar water heater?

A solar water heater uses the sun's energy rather than electricity or gas to heat water, thus reducing your monthly
utility bill. When installed properly, solar water heaters are more economical over the life of the system than heating water with electricity or gas.
Three are mainly three types of solar systems are used: pumped, integral collector storage (ICS), and
thermo-siphon.
The direct circulation system circulates potable water from the water storage tank through one or more collectors
and back into the tank. The solar collector is the main component of the solar system. It is usually a metal box with insulation and a black absorber plate that collects solar radiation and heats the water. The circulating pump is
regulated by an electronic controller, a common appliance timer, or a photovoltaic (PV) panel.
In integral collector storage systems, the solar water storage system is built into the collector. The potable water in the collector unit is heated by the sun and delivered by city or well water pressure to an auxiliary tank (which
contains non-solar back-up heating) or directly to the point of use.
A thermo siphon solar water heating system has a tank mounted above the collector (normally on the roof) to
provide a natural gravity flow of water. Hot water rises through piping in the collector, which is mounted below the tank; heavier cold water sinks to the lowest point in the system (the collector), displacing the lighter hot water
which rises to the tank.
The ICS and thermo siphon systems are simple since they use no pumps or controllers and water always flows
through the collector.

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