• The application of Kemao fans in the low-temperature air-energy heat pump air conditioning system is mainly aimed at heating in cold northern regions, industrial low-temperature environment temperature control and other scenarios. Through technological innovation, it solves the operating problems of traditional heat pumps under low-temperature conditions. The specific applications are as follows:

I. Core technical advantages

Ultra-low temperature environment adaptability

Adopting the anti-freeze axial flow fan design, combined with low-temperature resistant materials (such as polymer coating blades, low-temperature sealed bearings), it can operate stably in a wide temperature range of -25℃~55℃, avoiding frost, jamming and other problems.

Supporting variable frequency intelligent speed regulation (patent CN 117588430 B), automatically adjusting the air volume according to the ambient temperature, maintaining the heating efficiency of the low-temperature heat pump and the system pressure balance.

High-efficiency heat exchange and defrosting technology

Through the reverse cycle defrosting mode, the fan-linked heat pump system defrosts quickly, reducing the energy consumption of traditional electric auxiliary heating defrosting, and shortening the defrosting cycle by more than 30%.
Optimize the air duct structure and improve the air contact efficiency of the evaporator and condenser. The heating energy efficiency ratio (COP) can still reach more than 2.8 under -15℃ working conditions.

Energy saving and reliability enhancement

The application of permanent magnet synchronous motor (IE5 energy efficiency level) reduces energy consumption by 25% compared with ordinary fans, and adapts to the high energy efficiency requirements of low-temperature heat pumps.
The fan housing adopts anti-corrosion coating, which can withstand harsh environments such as high humidity and salt spray, and extend the equipment life to more than 15 years.
2. Typical application scenarios

Northern central heating

Equipped with commercial low-temperature air energy heat pump units, it provides winter heating for schools, hospitals, communities, etc. A single fan can cover an area of ​​500~1000㎡, and the system comprehensive energy efficiency (IPLV) is increased to 4.0.
Case: A regional heating project in Inner Mongolia uses a combination of Kemao fans and low-temperature heat pumps to achieve a constant indoor temperature of 18~22℃ under -20℃ environment, and the annual operating cost is reduced by 40% compared with traditional boilers.

Industrial low-temperature heating

Used in industrial scenarios such as food processing and electroplating workshops that require constant temperature and humidity, the stability of the heat pump system under low temperature and high load is improved through forced heat exchange by fans.
Case: A chemical plant in Shandong uses Kemao fan low-temperature heat pump air conditioners to solve the problem of temperature fluctuations in the workshop in winter, and the equipment failure rate is reduced by 60%.

Agriculture and special environments

Adapt to low-temperature and high-humidity environments such as greenhouses and aquaculture, and maintain efficient dehumidification and heating of the heat pump system through intelligent temperature control fans.

• Main customers: McQuay, Trane, Carrier, Dun'an, Finney, Zhongguang, Weike, Ouke, etc.

• Application area: Central heating areas in the north: Beijing-Tianjin-Hebei, Inner Mongolia, Gansu, Ningxia, Xinjiang.

• Application features: low temperature, non-stop operation; low operating noise, strong overload capacity when frosting.

• Number of applications: Since 2015, more than 600,000 low-temperature air energy heat pumps have been used in the north.

AIMITEK European Heat Pump Project	Zhongguang Gansu Jiugang Project	Trane Shandong Jigang Project