Fresh air heat recovery unit - a comprehensive knowledge of fresh air heat recovery introduce new air unit is divided into three categories, fresh air heat recovery unit is a new air unit in common, is currently the most advanced new air unit. Compared with the general air system, heat recovery units biggest feature is the addition of new wind-wide heat recovery system, capable of discharging the outdoor air heat recovery, reduce energy consumption of air conditioning. For most of my friends on the heat recovery air handling units lack of understanding of the status quo, the paper will run the principle of fresh air heat recovery unit, the unit functions as well as its scope of application, the price for a comprehensive introduction. Heat recovery air handling units operating principle of the new fresh air heat recovery unit is a 24-hour residential ventilation, so that the whole house to keep fresh air circulating in the ventilation system. Primarily by new wind host (total heat exchanger), the control switch, duct, air intake, exhaust outlet composition, the host device installed in between, when the kitchen, bathroom and other rooms, the system work, polluted indoor air through the exhaust pipe through total heat exchanger outside. Polluted indoor air into the room at the same time, new air through the heat exchanger into the room through the whole air duct. In the supply and exhaust, while the absorption of fresh air into the interior of the cold exhaust (heat), conducted heat recovery, to save energy. Heat recovery air handling units of a new, fresh air heat recovery fresh air replacement function unit is a two-way flow of fresh air ventilation system, intake and exhaust its unique synchronization feature, the exhaust and intake at the same time, the formation of a full range of circulating air convection . After quickly to polluted indoor air is discharged through a filter, and replenish the filtered fresh air, fresh air equivalent replacement, ventilation step. When the rated supply and exhaust air volume is the same, its effect can be achieved more than twice the ventilation fan in general. 2. Set the heat recovery air purification coarse filter in the new air unit, or activated carbon, ion and other special filters to filter adsorb SO2, NH3, benzene, formaldehyde and other toxic gases. Selection of imported high-grade filter can not only prevent the machine 10 micron atmospheric pollen and dust intrusion, you can also filter the air in viruses, bacteria, mites and other harmful micro-organisms as well as 50 percent of PM2.5, greatly improving the the introduction of new air quality, and in order to bring fresh, clean air. 3, heat recovery fresh air heat recovery core device is the total heat exchanger unit can be discharged to the interior of energy recycling. Recycling exhaust air summer cold, then after the outdoor hot air into the room pre-cooled (left illustration: outdoor air is pre-cooled to 33 ℃ 29 ℃); winter exhaust air heat recovery, then the outdoor After the hot air preheater into the interior (eg, below right: the outdoor air is preheated 0 ℃ to 14 ℃), thereby reducing energy losses and reduce the energy consumption of air conditioning, refrigeration and heating of the air.