Unit AHU
1. High efficiency and energy saving
According to customer requirements, variable frequency compressors can be adopted, which have high energy efficiency. PLC programming supports different communication protocols and multiple modes to choose from
2. Simple and easy operation
The control system is advanced. The hand controller can be installed in the control room and supports remote operation
3. Safe and reliable
It features functions such as over-temperature protection for compressor exhaust, overload and overheating protection, high and low pressure protection, over-temperature protection for electric heating, and password protection
4. Complete range of varieties
Cold (hot) air type, constant temperature and humidity type, etc. can be selected as needed to achieve year-round cooling
Unit AHU
Overview
GRAD covers vertical (air volume from 2000 ~ 60000m3 /h), horizontal (wind increased from 2000 ~ 60000m3/h), and ceiling-type (air volume from 1000 ~ 16000m3/h) three series of air-handling unit to meet customers’ need of cooling, heating, humidification, dehumidification and so on.
It is widely applied in hotels, theaters, shopping malls, office buildings and a variety of places requires comfortable environment. It also can be used in electronics, chemical, medical, pharmaceutical, cigarettes, food, light engineering and other industrial buildings.
The characteristics of air-handling units
↘Fan, motorl
A unit adopts centrifugal fan with both air inlet. The fan runs smoothly in the rigorous static and dynamic balance ̀test.
B: With ball bearings sealed, and functions of pre-lubricating, self-aligning, self-locking, automatic thrust, etc., the fan is maintenance-free in normal use.
C: Fans of a small model unit are driven directly by external sub-motor, no belt, and easy to maintain
↘Filter
Unit filter is coarse plate. Filter material is cleanable convex Nylon net.
↘Cooler
The selected parameters of surface air cooler are designed by CAD/coi1 software. The standard cooler normally has copper pipes of φ6. It is tightened by an overall rise up of brass strung by corrugated aluminum fin tubes. Staggered copper pipes have good heat transfer performance, low airflow resistance and superior corrosion resistance, ensuring the cooler has a higher heat transfer coefficient and a longer life.
Core technology
The unit adopts compressors of well-known brands such as Haili, Panasonic, Emerson, Danfoss and Hitachi, featuring high efficiency, reliability and excellent anti-liquid hammer performance, low vibration and low noise. The fan has undergone static and dynamic balance correction to ensure smooth operation of the entire machine. According to the demand, variable frequency presses can be adopted, which have high energy efficiency. PLC programming, supporting different communication protocols, with multiple modes to choose from, and featuring fault diagnosis and energy management functions. It features functions such as over-temperature protection for compressor exhaust, overload and overheating protection, high and low pressure protection, over-temperature protection for electric heating, and password protection. It adopts PTC electric heating, with no fire hazard and is equipped with multi-level temperature protection.
About us
Shandong GRAD Group Co.,Ltd. is established in 1993, located in Dezhou Shandong,covering an area of 700 thousand square meters, with more than 2500 employees. The total capital is 925 million RMB, and annual output value exceeds 2.5 billion RMB. During 20 years' development, GRAD Group concentrates on the central air-conditioning and compound material products and show the world a high-technological
enterprise combining construction budget, technical consultation, product design, Manufacturing and debugging service. There are 10 series,over 130 Kinds of products covering the whole central airconditioning series and the compound materials series Products. The high standard workshop covering 350 thousand square meters.
The registered capital: one hundred million yuan
Equipment price straight: 370 million yuan
Total capital : 925 million RMB
Annual output value: over 3 billion RMB
The design team:300 people
Honor:
1.Standing council member of China refrigeration air-conditioning industry association
2.Standing council member of China fiberglass industry association
3.Won the China state construction engineering luban prize, the national quality award, etc
Qualification:
1.Electrical and mechanical equipment installation qualification
2.Air purification engineering secondary qualification
3.Obtained the CNAS certification testing center
Overseas offices:
1.Established offices in Thailand and Cambodia
2.The United States subsidiary was established in 2017
