Author: John Hollick, Conserval Engineering
SolarWall® solar heaters are ideally suited for preheating fresh air required in buildings. Heat recovery ventilators (HRV) and heat wheels are designed to recover heat from exhaust air to also preheat fresh air. Designers have asked whether the two technologies can work together and, if so, what economic and technical issues need to be addressed.

Author: John Hollick, Conserval Engineering
A landmark paper on the benefits of PV thermal cogeneration systems was presented on July 11 at the 2007 American Solar Energy Society Conference in Cleveland.

Source: John Hollick, Conserval Engineering
"The SolarWall® system heats ventilation air , fresh air and make-up air. It heats fresh air directly to achieve as high an efficiency as possible and to improve indoor air quality. The SolarWall systems are unglazed, and are all designedto heat or preheat outside air as it enters a building."

Source: National Renewable Energy Laboratory (NREL), a U.S. Department of Energy national laboratory
"This R&D 100 Award-winning technology is the product of the practical initiative of Conserval - a private solar heating and energy conservation company that markets the technology as SolarWall^©"

Source: U.S. Department of Energy
"This very simple solar collector passively preheats ventilation make-up air via a large, unglazed solar collector. These collectors are most effective on south-facing building facades, though significant deviation off true south (plus-or-minus about 60 degrees) results in only minor loss of performance. The Canadian company Conserval Engineering, Inc., has pioneered this system under the tradename Solarwall."

Source: Canadian Solar Industries Association (CanSIA) in association with Natural Resources Canada (NRCan)
"The city estimates that they will save $10 million per year when all the buildings have been upgraded with new technologies. There will also be an increase in the comfort level within the buildings and a reduction in long-term maintenance costs, as technologies such as SOLARWALL are maintenance free."

Source: Natural Resources Canada (NRCan)
"The simplest, most efficient - and least expensive - way to preheat outside air for industrial and commercial applications is through the use of a perforated-plate absorber or a solar air heating system, such as the SolarWall^®."

Source: U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy
"Installing a "solar wall" to heat air before it enters a building, called solar ventilation preheating, is one of the most efficient ways of reducing energy costs using clean and renewable energy."

Source: The Office of Power Technologies; is part of the Office of Energy Efficiency and Renewable Energy, in association with National Renewable Energy Laboratory (NREL) and the U.S. Department of Energy
"As a result, the transpired collector is one of the most efficient solar collectors, converting as much as 80% of the solar energy striking it into usable heat. Conserval markets the technology as the SolarWall^TM..."