Water Chiller HVAC

Water Chiller HVAC

The water-cooled screw chiller adopts the semi-closed double-screw compressor, and uses the single circuit or multi-circuit design. The protection and control facilities are placed in the control cabinet and the running state of the host is displayed on the computer monitor. All units are assembled in the factory and leave the factory after being operated and debugged. The application scope of this series of the units includes various commercial and civilian building facilities, such as shopping malls, office buildings,

commercial buildings, factory workshops, hotels, hospitals and so on.

1. Reliable Core: Advanced Semi-Hermetic Twin-Screw Compressor Experience unmatched durability. Our semi-hermetic twin-screw compressor features 1/3 fewer parts than traditional piston types, ensuring high reliability and a significantly longer lifespan.

• Stepless Regulation: Precise 25-100% energy adjustment to match your load perfectly.

• Superior Stability: Continuous suction/exhaust and strong resistance to liquid shock for 24/7 stable operation.

2. Patented Technology: Ultra-Efficient Falling Film Evaporator Our patented falling film technology sets a new industry benchmark:

• Extreme Efficiency: Heat transfer efficiency increased by 15% compared to flooded evaporators.

• Peak Energy Saving: Achieve a COP of up to 5.3, reaching National Level 1 energy efficiency standards.

• Operational Savings: Reduce your annual electricity and operating costs by 30%.

3. Smarter Control: Intelligent Remote Monitoring & Oil Separation

• 99.99% Oil Separation: Our R&D patented oil separator ensures a clean system and extended service life.

• IoT Ready: Real-time remote monitoring, fault processing, and data memory. Get alarm reminders and handle maintenance issues instantly from anywhere.

• Precision Flow Control: National invention patent for real-time refrigerant flow control, ensuring precise cooling even under variable loads.

4. Why Choose GRAD?

• Patented Innovation: Multiple national utility model patents in oil separation and liquid distribution.

• Environmentally Friendly: Reduced refrigerant charge and eco-conscious design.

• Global Service: Backed by a robust service network for seamless installation and support.

Application scope

Comfort air conditioning systems: large supermarkets or commercial complexes, hotels, shopping malls, office buildings, exhibition halls, airports, stadiums, etc.

Process air conditioning systems: electronics, biology, light textile, chemical engineering, metallurgy, pharmaceuticals, power, machinery, etc.

About us

Establised in 1993, GRAD Group covers an area of 1.15 million square meters and has more than 2,000 employees, with an annual output value of nearly 4 billion yuan. GRAD Group's main business: central air conditioning chiller and terminal products, FRP water tank, FRP winding pipe, FRP storage tank, wind turbine cabin cover, environmental protection equipment, and other more than 130 varieties. GRAD Group is the pillar enterprise of the “Dezhou Central Air-Conditioning City” named by the China Refrigeration and Air-Conditioning Industry Association. It ranks the top 10 among central air-conditioning enterprises in the country, and gets the first-class qualification for the installation of national electromechanical equipment and the second-class qualification for air purification engineering. GRAD Group can undertake central air conditioning engineering, purification engineering construction.

GRAD sales network covers over 100 countries and regions like America, Australia Indonesia, Malaysia, UAE, Thailand, Nigeria etc and has established branch company in USA, and set up offices in Cambodia and Thailand to make overall layout of global market.