SolarDuct PV/T - Roof mounted solar air heating system which also acts as PV racking

By: Solar Drying  09-12-2011

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PV module efficiency is typically between 8-15%. What happens to the rest of the sun’s energy that shines on the panels? Most of it is converted into heat energy, which normally is lost and provides no value to the system owner. As well, the heat build-up behind PV modules reduces the electrical output by 0.4-0.5% for every 1°C above its rated output temperature (which is 25°C). Given that roofs can reach temperatures as high as 90°C, the actual operating efficiency of PV systems is often significantly less than the rated output. For standalone PV systems, high capital costs and low energy production result in very long paybacks. The PV/T cogeneration technology offers a solution that actually makes PV systems financially feasible in standard commercial, industrial, and institutional applications.

CESA 10 - Chippewa Falls, WI

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agricultural applications

The transpired solar collector; SolarWall solar air heating technology for agriculture applications (solar crop drying, solar process drying, solar barn;piggeries, chicken coups, etc. Now there are times when I don’t need to run natural gas at all because I’m getting enough heat from the SolarWall panels on the roof to shut off the burners.. To dry the nuts, I need air that’s 110F, so if ambient is 80F, then I need a 30 degree heat gain.



SolarWall Products - Conserval has a variety of solar air heating solutions, from SolarWall to SolarDuct, our solar air heaters can be roof or wall mounted and are designed for every type of building and application (commercial, industrial. Our provides a total energy solution which produces both electricity and heat energy - and doubles as a PV racking system - with a much faster payback then a stand alone PV system.


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If photovoltaics are being considered, the PV panels simply get placed over the transpired solar collector panels.iii) When SolarWall solar heating/solar drying panels are affixed to the roof, a gap is left between the metal cladding and the roof surface.