Universal Energy

Solar Water Heaters

Heater Exchanger Technology

The heat exchanger is a single copper coil (Ø14mm×1mm), normally between 22 and 60 metres (the length can be modified base on the requirements of our client). It is fixed by a stainless steel frame soldered in the tank and can resist a maximum pressure of 6 bars. Copper conduction efficiently heats the water in the tank. The water in the tank and tubes is independent from the network.

With this heat exchange design

• Hot water provided is cleaner
• Tubes and tank cannot be blocked by dirty water from the network
• No damage due to variation in pressure
• Water is uniformly heated, preventing shock to the system
• Water is not left stagnant in the tank reducing the risk of disease

Best Heat Insulation and Output

Solar tubes absorb the radiation from the sun and
convert it into heat for use in water heating. They are made of a selective coating maintained under vacuum between two tubes of borosilicate glass. Vacuum is widely recognized as the best insulating method.

Each solar tube consists of 2 tubes inside which air is evacuated

• The outer tube is transparent, allowing light rays to pass through with minimal reflection
• The inner tube is coated with a special selective coating which features excellent solar radiation absorption and minimal reflection properties
• The insulation properties are such that while the inside of the tube may be 100°C, the outer tube remains cold to touch

A Higher Efficiency

This technology is perfect for all weather conditions. On cloudy days, the efficiency of Solar Design solar water-heaters is higher efficiency than with a flat plate collector due to the minimal heat loss from the vacuum tube technology.

Same Performance All Day Long

Evacuated solar tubes have the same output all day long from sunrise to sunset. The circular design ensures, solar radiation will always hit the tubes perpendicularly. Also, and in case of strong winds, the solar water heater won’t lift up thanks to air circulation between the tubes.