What is "solarwall"

SolarWall was invented by Conserval Engineering's president, John Hollick in the late 1980s. Conserval Engineering Inc. is a Canadian company based in Toronto that has been delivering custom engineered renewable energy solutions since 1977 and which decided to focus on building integrated solar heating with its SolarWall invention often referred to as transpired collector. SolarWall systems are building integrated perforated metal heating panels mounted onto sun facing walls of buildings to heat and ventilate large buildings with a requirement for ventilation air or fresh air.