General design factors
A number of factors will need to be evaluated for an individual building, to determine the optimum Colorcoat Renew SC® collector type and size and airflow requirements. Recommendation of any of our Colorcoat Renew SC® collectors will be determined by the following:
- Gross internal dimensions of the space to be heated.
- Thermal efficiency of the building envelope fabric.
- Actual building space heat demand (affected by solar heat gain through windows or roof lights).
- Ventilation requirements.
- Orientation of the building and environmental shading effects.
- Available wall space for installation of the collector.
Solar collector orientation
Ideal orientation is south-facing wall elevation. A collector will also provide excellent results on a variation of up to 20° from south, and quite acceptable levels of performance will be achievable with orientations 45° from due south. A collector facing due east would benefit from early morning solar radiation and a westerly orientation would benefit from the later afternoon solar radiation.
Colour selection and influence on performance
Colorcoat Renew SC® utilises Tata Steel’s high performance Colorcoat Prisma® pre-finished steel. The superior solar absorption characteristics, durability and corrosion resistance of Colorcoat Prisma® are key attributes for achieving maximum collector efficiency and longevity.
For Colorcoat Renew SC® applications we would recommend dark colours with a high or preferably very high solar thermal performance. In some instances, however, this may not always be possible as the colour choice may be dictated by other aesthetic requirements and building design.
Solar thermal performance of Colorcoat Prisma®
Metal hand samples are available for all colours. Our hand samples give a true representation on colour and can assist in colour selection and finalising product specification.
Order samples online for Colorcoat Prisma®
Please select your chosen Colorcoat Prisma® colour to request samples. Or order samples by contacting the Colorcoat Connection® helpline +44 (0) 1244 892434.
Solar collector angle tilt
For maximum solar radiation benefit during the heating season, we recommend wall collectors as the most practical and cost-effective to install. A vertical wall is more efficient whilst the sun is lowest in the sky during the winter months, a period when heating demand is likely to be at the maximum.
Solar collector shading
Shading of the Colorcoat Renew SC® system should be avoided. Consideration should be given early in the design process to any potential shading from elements such as trees, pylons, chimneys, stacks, surrounding buildings and other landscaping features. Potential shading from any of the above should be taken into account when carrying out a feasibility study or site visit.