Rotary Wheel Exchanger Air To Air Heat Recovery Air Handling Unit

Working principle

Rotary heat exchanger is constructed by alveolate heat wheel, casing, driving system and sealing parts. The cold exhaust air in summer (hot exhaust air in winter) and summer hot fresh air (winter cold fresh air) pass through half of the wheel, and the wheel rotates constantly at the same time to transfer the heat and moisture in the exhaust air to the fresh air. Energy recovery can be as high as 70%-90%.

Application

Rotary heat exchanger is suitable for high heat recovery efficiency, low air dust content, non-corrosive and allow a small amount of fresh air and exhaust air cross leakage in the large air volume system.

Holtop HJK series Combined Air Handling Unit integrates the heat recovery core technology, and uses advanced technology to create the case structure that fully meets European standard performance. Rich function combination and all-round humanized design bring extraordinary experience to users.

Air handling Unit-AHU

● Delicate Section Design of AHU Case

Holtop offers 61 standard AHU case sections to meet various air volume needs, with customized designs to ensure performance and compact size—saving cost and space. The design also adapts to varying supply and exhaust air ratios for different applications.

● Superior Mechanical Strength

The 1.5mm T6 aluminum frame with nylon connectors ensures stability even for large units. HJK series units meet EN1886 D1 grade, with maximum deflection <4mm/m, as verified by a certified lab.

● Excellent Sealing

The embedded panel-frame structure allows easy maintenance while ensuring low air leakage. Polymer seals and carefully sealed doors and pipe passages guarantee excellent airtightness, meeting national air purification standards.

Air Handling Unit Design

FAN SECTION

FILTER SECTION

According to the requirements of air volume and static pressure value, one or more fans can be selected. The optional fans include direct-driven centrifugal fans, forward/backward centrifugal fans, plug fans, EC fans, etc. The fan impeller and belt pulley are corrected by static and dynamic balance, and the whole fan is corrected by running vibration, so that the operation is stable and reliable. The base of the fan and the motor is equipped with shock absorbers, the air outlet is designed according to the aerodynamic performance and has a soft connection with the case to effectively reduce the transmission of vibration.

COOLING & HEATING COIL + HUMIDIFIER SECTION

HUMIDIFIER SECTION