The working principle of the heat recovery wheel is to take winter as an example, where the indoor return air passes through the upper part of the heat exchanger and is discharged to the outdoor machine.
Working principle: Taking winter as an example, the indoor return air passes through the upper part of the heat exchanger and is discharged to the outside.
At this moment, most of the heat and moisture contained in the outside air are gathered in the rotating wheel, and only one is discharged outdoors
Polluted air. Furthermore, when the outdoor fresh air introduced from the lower part of the heat exchanger passes through the rotor,
Obtain the heat and moisture collected in the wheel, preheat and humidify it, and have pre cooling and dehumidification effects in the same summer,
And continuously supply fresh air indoors.
That is to say, the total heat recovery wheel is an energy-saving device that recovers energy lost during ventilation.
There are two methods for wheel heat recovery: sensible heat recovery and total heat recovery. The raw material for sensible heat recovery wheels is generally aluminum foil, while the raw material for total heat recovery wheels is aluminum foil or other heat storage and moisture absorption materials with a moisture absorbing surface. As a heat storage core, the impeller passes through one half circle of the impeller for fresh air, while the other half circle of the impeller passes through for exhaust air. The fresh air and exhaust air flow alternately through the impeller in opposite directions. There is a temperature and humidity difference between the fresh air and the exhaust air. The rotor continuously absorbs heat and moisture on the high temperature and high humidity side, and releases it on the low temperature and low humidity side to satisfy heat exchange. The rotor rotates at a speed of 10r/min under the drive of the electric motor, and the exhaust air is discharged from the upper side of the heat exchanger through the rotor to the outside. During this process, most of the total heat in the exhaust is stored in the rotor, while dirty air is expelled. The outdoor air enters from the lower part of the wheel, passes through the wheel, absorbs the energy stored by the wheel, and then supplies it to the indoor area. When the speed of the wheel is below 4 r/min, the power significantly decreases. The characteristics of rotary heat exchangers are compact equipment structure, small footprint, space saving, high heat recovery power, and single rotationThe windward area of the wheel is large and the resistance is low. Suitable for air conditioning systems with high air volume.