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SolarWall transpired solar collector

The SolarWall® transpired solar collector is an innovative solar air heating system that utilises solar radiation to deliver naturally warmed fresh air into buildings. With no moving parts, minimal energy running costs and minimal carbon dioxide emissions, the SolarWall® technology provides a truly renewable heat energy source with payback periods of as low as 3 years for new build and 7 years for refurbishment projects.

The principle of the SolarWall® system is simple. Installed as an additional skin to a building's southerly facing elevation, the system consists of a pre coated, profiled steel sheet with thousands of tiny perforations uniformly spaced across the full face of the collector.

As solar radiation strikes the surface of the SolarWall® panel and is absorbed, solar heat conducts to the thermal boundary layer of air which lines the outer surface of the panel. This heated boundary layer of air is then drawn through the perforations into an air cavity which is created between the SolarWall® panel and the original elevation behind.

From the air cavity, the fresh, solar heated air can then be introduced directly into the building as ventilation air (industrial applications), or ducted into a HVAC unit (commercial and residential applications), where it can be used as a pre-heater for the building's main heating system.

As a result of supplying fresh, solar heated air into the building, the SolarWall® system can help to effectively eliminate internal negative pressure situations and heat stratification problems that can be associated with modern air tight constructions. The system can also be designed to meet specific regulatory ventilation codes as well as providing significant reductions in annual energy consumption and resulting carbon dioxide emissions.

Independently proven savings
The SolarWall® has been independently tested, monitored, recorded and proven by BSRIA to produce heating cost savings of 50% and an independently thermally modelled report by Battle McCarthy proved SolarWall® can provide up to 20% of a building’s total energy requirements. SolarWall® is recognised globally as a renewable energy form in its current right.

As part of the ongoing development and accreditation of the SolarWall® system as a renewable technology it has been endorsed by five of the UK's leading independent authorities—Oxford Brookes University; Welsh Assembly Government; Cardiff University; BRE; and BSRIA.

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