Principle of Rotary Heat Recovery Fresh Air Unit

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Principle of Rotary Heat Recovery Fresh Air Unit

The main component of the rotary heat recovery fresh air unit is a disc-shaped heat storage wheel, which is made of aluminum foil wound into a honeycomb shape as a heat storage body. When working, the fresh air passes through one semicircle of the heat exchanger, and the exhaust air passes through the other semicircle in the opposite direction. Under the action of the power mechanism, the heat storage wheel rotates continuously at a speed of about 10 rpm, and the heat storage body is continuously heated on the high-temperature semicircle side to absorb heat; when it rotates to the low-temperature semicircle side, it is cooled and releases heat. In this way, part of the energy (coldness, heat) in the exhaust air is recovered into the fresh air, and the surface of the aluminum foil is coated with hygroscopic material to make a full-heat type rotor. The moisture in the airflow enters the hygroscopic coating, and the moisture is released when the rotor reaches another airflow. The composition of the rotary heat recovery fresh air unit is to use the exchange of sensible heat and latent heat between the fresh air and the exhaust air to recover energy, so as to save energy and maintain good ventilation. The fresh air can be pre-cooled and dehumidified in summer, and the fresh air can be pre-heated and humidified in winter. Let me introduce the relevant content of the rotary heat recovery fresh air unit.

热回收新风机组原理

机组在送风与排风通道间设置转轮换热器，室外新风被排风预冷或预热后再送入室内，大幅降低空调负荷。配合过滤与变频，可在保证室内空气品质的同时节约能耗，适合商业楼宇与洁净厂房。原理动画见转轮运行演示。