Sometimes the roof is better. That is why Conserval dreamed up SolarDuct air heating.
Like the original SolarWall technology, SolarDuct systems use the power of the sun to heat your building’s ventilation air, reducing energy consumption, heating costs and greenhouse gas emissions
The modular SolarDuct units are arranged and assembled similar to traditional PV solar panels, and the resulting SolarDuct arrays integrate seamlessly with existing rooftop mechanical equipment.
How it Works
Buildings with centralized heating and ventilation systems draw fresh air through HVAC units In winter, these units consume tremendous amounts of energy to heat the cold incoming air to comfortable indoor temperatures. With SolarDuct, incoming fresh air is solar-heated before it reaches the HVAC unit, minimizing building energy consumption throughout the heating season.
When the sun’s radiation heats the surface of the SolarDuct array, fresh, solar-heated air accumulates on the surface of the panels. The existing rooftop HVAC units draw this solar-heated air through thousands of micro-perforations in the panels This solar-heated air gathers within the SolarDuct cabinet space and travels to the HVAC unit’s fresh air intake via insulated rooftop mechanical ducting. In the summer, when solar-heated air is not desired, the SolarDuct system is bypassed and the rooftop HVAC units will draw direct from ambient.
With the SolarDuct heating array, incoming fresh air is heated up to 75°F above ambient temperatures. Independent monitoring studies have shown that effectively-designed solar air heating systems can displace 20-50% of the building heating load.