IMPROVING HUMIDITY CONTROL WITH ENERGY RECOVERY VECTILATIONG

摘要

Energy recovery ventilation (ERV) generally is thought of as an energy-saving measure, using the exhaust air from a building to precondition (precool and dehumidify during the cooling season and preheat and humidify during the heating season) incoming ventilation air, with only the small energy penalty of the blower power to overcome the pressure drop in the ERV. Indeed, this technology is a proven means of reducing cooling and heating loads and energy use, allowing downsizing of cooling and heating equipment and reducing the magnitude of the peak electric load on design condition cooling days. An equally compelling reason for using ERV is to allow unitary air-conditioning equipment to maintain the indoor relative humidity within the desirable 40% to 50% range under virtually all conditions, including high humidity outdoor conditions.