Solar Hot Water Tanks

Solar Hot Water Tank: Overview

A solar hot water tank is a water heating system that uses sunlight to generate energy. It is generally composed of solar thermal collectors. They are also sometimes called domestic hot water systems. They prove to be a cost-effective way of generating hot water for home use. A solar hot water tank would almost always require a back up water heating system in cases of bad weather or increased demands. Conventional storage tank heaters usually provide good back up in these cases. Some solar hot water tank packages already include backup systems. A solar hot water tank has a wide variety of applications including home, business, and industrial uses. It could be used for swimming pool heating, space heating, and under floor heating.

Solar Hot Water Tank: Mechanism

A solar hot water tank is composed of a storage tank and solar thermal collectors. Basically, there are two types of solar water tanks. The first one is the active type. Solar water heaters under this category usually have circulating pumps and controls. The second is the passive type. A passive solar hot water tank is typically less expensive than an active one. It could also be more reliable and usually lasts longer. However, they are usually not as efficient as an active solar hot water tank.
A solar hot water tank requires a well insulated storage container. It has a supplementary outlet and inlet connected to and from the collector. One kind of solar hot water tank, the two tank system, initially preheats the water in the solar hot water tank before it enters the conventional water heater. On the other hand, one tank systems combine the backup heater and solar storage in one tank.
Solar Hot Water Tank: How to Select
It is very important to choose the right type of solar hot water tank according to your intended use. Choosing the right type would not only save you time but money as well. In selecting a solar hot water tank heater, there are several points to consider. Some of these are the following:

• Evaluate the location of your home o building for solar source

• Determine the correct system size to accommodate available space and hot water demand

• Determine the system’s energy efficiency and approximate operational cost

• Consider local codes, regulations or ordinances regarding the use of a solar hot water tank

Solar Hot Water Tank: Installation and Maintenance

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