They ABS series require very little maintenance

They ABS series require very little maintenance. An open loop system should not be used where temperatures can drop below freezing. Hot water from the collectors is piped into the tank, into the lower portion of the tank, to replace hot water that is being used from the top of the tank.
. Hot water from the collectors is piped to the solar storage tank and is stored until needed.

In an open loop solar hot water system, water from the homes main water supply flows through the solar collectors to be heated. Conventional water heaters also provide a backup system to solar water heating systems when water temperature is below the minimum temperature setting. These are the most common type of solar collectors used in solar hot water systems.

One tank solar water heating systems use a conventional pressurized tank. This tank, with its backup water heater, acts as the solar storage unit.

Flat-plate solar collectors consist of an insulated box which contains a dark absorber plate under one or more glass covers. When the fluid is heated, it will flow through the heat exchanger and heat the water in the storage tank. An open loop system is the easiest solar hot water system to design, construct and maintain. The fin absorbs solar energy.

There are two basic types of solar hot water systems, closed loop systems and open loop systems.

Evacuated-tube solar collectors contain parallel rows of transparent glass tubes.Solar Hot Water Systems  One and Two Tank Systems

Solar hot water systems generate hot water for domestic and commercial uses. Water or a glycol mixture is heated as it flows through piping below the absorber plate and out to the solar storage tank. A closed loop system may be used in any climate.

Solar hot water systems generally consist of solar collectors, water storage tanks and piping for feed and return lines. The backup water heater will engage if necessary. The components of solar hot water systems should be checked and possibly replaced every ten years by a solar energy contractor. Heated water is then stored in the solar storage tank.

Two tank solar water heating systems consist of a well insulated, solar storage tank and a pressurized conventional water heater.


Solar Hot Water Systems  Closed Loop and Open Loop Systems

Solar hot water systems utilize the natural resource of the suns radiation to heat water for domestic and commercial use.

Solar Hot Water Systems  Types of Solar Collectors

Domestic solar hot water systems use two types of solar collectors, flat-plate collectors and evacuated-tube collectors. Solar hot water systems are eco-friendly, require very little maintenance and are cost effective to operate. Air is evacuated and a vacuum is formed which prevents heat loss. Each of the tubes contains a glass outer tube and a metal absorber tube attached to a fin. When hot water is in use in the home, this pre-heated water in the solar storage tank will feed into the conventional water heater to replace the hot water used. Evacuated-tube collectors are more expensive than flat-plate solar collectors.

A closed loop solar hot water system uses a glycol antifreeze fluid that circulates from the solar collectors to the solar water storage tank