Commercial Air To Air Heat Recovery Exchangers

Commercial Air To Air Heat Recovery Exchangers

Commercial air - to - air heat recovery exchangers are devices used in commercial ventilation and air - conditioning systems to recover energy from the exhaust air and transfer it to the incoming fresh air.

Working principle

Heat transfer: When the indoor exhaust air and outdoor fresh air flow through the heat exchanger in a cross - flow or counter - flow manner, due to the temperature difference between the two air streams, heat will be transferred from the high - temperature air stream to the low - temperature air stream through the heat - exchange surface. For example, in winter, the warm indoor exhaust air heats the cold fresh air; in summer, the cool indoor exhaust air cools the hot fresh air.

Moisture transfer (for total heat exchangers): In addition to heat transfer, total heat exchangers can also transfer moisture. When there is a vapor pressure difference between the two air streams, water vapor will diffuse from the high - vapor - pressure air stream to the low - vapor - pressure air stream. For example, in winter, the relatively humid indoor exhaust air can increase the humidity of the dry fresh air; in summer, the fresh air with a high moisture content can transfer moisture to the relatively dry exhaust air.

Applications

Commercial buildings: Such as office buildings, shopping malls, hotels, and hospitals. These places have a large demand for ventilation and air conditioning, and the use of air - to - air heat recovery exchangers can effectively save energy and improve indoor air quality.

Industrial workshops: In some industrial production processes, a large amount of exhaust air is generated. Installing heat recovery exchangers can recover the waste heat in the exhaust air and use it for pre - heating the incoming air or other process needs, thereby reducing energy consumption and production costs.