Solar Water Heating Systems

Solar Water Heating Systems image

Description:

Solar heating systems provide the most economic way of heating water for domestic purposes. Even during the winter, the sun has enough power to contribute up to approximately 80% of the required energy whereas in the summer it can cover the entire household demand.

There are three main types of solar heating systems:

1. Thermosiphon Systems

Our OPUS thermosiphon solar water heaters are based on natural water circulation and they are the most straightforward, cost and energy efficient way of heating water and at the same time requiring very little maintenance. Their high efficiency provide hot water after only a few hours of sunlight and they are the eco -friendly answer to a family's hot water needs.

The OPUS thermosiphon system is made up from the following parts:

  • Collector
  • Solar boiler
  • Connecting kit
  • Solar system stand

There are 2 types of systems:

Open-loop system for warm climates
This simple and economic system is suitable for climates where there is no freezing risk. Mains water flows into to the solar boiler and then to the lower part of the collector where it is heated. The water rises in the collector as it is heated and flows into the boiler and from there on to the user. An electric backup system provides energy during periods of cloudy weather.

Closed-loop system for cold climates
A close-loop system uses a wide-surface heat exchanger and allow adding of anti-freeze liquid and it helps to avoid the build up of scale in the collector. Heated water from the collector flows into the heat-exchanger, and then returns to the collector. The electric backup system provides energy during periods of cloudy weather.

2. Forced Circulation systems

In forced circulation systems, a pump and control unit are utilized to ensure correct water circulation. This allows the collectors to be situated at a greater distance from the solar boiler, for example it may be situated in the basement or boiler room.

The systems are available for:

Warm Climates - Open-loop systems
More economical to install, the open-loop system is recommended for climates where there is no risk of freezing. Mains water flows to the boiler and is then pumped to the lower part of the collector where it is heated. It rises inside the collector and flows into the boiler and from there to the user.

Cooler Climates - Close-loop systems
The closed-loop system uses a wide surface heat-exchanger, allowing anti-freeze to be added and avoiding the build up of scale in the collector. Heated water from the collector is pumped into the heat-exchanger and then returns to the collector. This warms up the water flowing into the boiler from the mains, which can then be used.

3. Large Scale Systems

Large scale systems have been developed in order to answer a variety of conditions, enabling the installation of environmentally friendly, energy efficient and custom-tailored systems for all climates. In these large scale systems, a series of collectors supply heated water to several large hot water tanks. These systems are suitable for hotels, hospitals, swimming pools and other commercial applications.


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