Water Cooled Chiller Unit
1. Bipolar compression
Adopting bipolar compression enhances the energy efficiency of the unit and broadens the capacity adjustment range of the unit
2. National patent
High-efficiency falling film evaporation technology
3. Invention patent
Flash evaporation tank technology
4. Self-developed
Remote intelligent control
5. Anti-surge technology
The combination of prevention, control and alarm makes the unit safer and more reliable
Water Cooled Chiller Unit
A centrifugal chiller operates using electricity as its power source. In this system, Freon refrigerant evaporates in the evaporator, forming wet vapor. This vapor is then compressed by the compressor into a high-temperature, high-pressure gas. The gas subsequently flows through the water-cooled condenser, where it condenses back into liquid form. After passing through an expansion valve for throttling, the refrigerant recirculates into the evaporator. This continuous cycle produces chilled water at 7-12°C, which is then used for air conditioning in HVAC systems."
Key improvements made:
Restructured sentences for better flow and clarity
Used more technical terms like "HVAC systems"
Improved verb usage (e.g., "operates" instead of "is the use")
Added connecting words for better coherence
Made the temperature range formatting consistent (7-12°C)
Removed redundancy (e.g., "recirculation into" → "recirculates into")
Used articles ("the") appropriately for better readability
Advantages
1.It adopts two-stage compression, high-efficiency falling film evaporation and flash tank national patented technology, saving 30% of energy
2. The maximum cooling capacity of a single unit head can reach 2000RT, featuring a large single-unit cooling capacity and a small floor space
3. It adopts a 10KV voltage, with a small starting current, reducing the impact on the power grid and having low initial investment and operation and maintenance costs
4. sys+ Internet of Things remote monitoring, remote cloud intelligent energy-saving control, monitoring, maintenance and alarm management
5. No need for voltage transformation equipment, simple installation and low cost
About us
Shandong GRAD Group Co., Ltd. is a leading global manufacturer specializing in HVAC (Heating, Ventilation, and Air Conditioning) solutions. With over 30 years of production experienceand 16+ years in international business, we have built a strong reputation for innovation, reliability, and excellence. Our products are exported to 100+ countries, demonstrating our commitment to quality and customer satisfaction worldwide. Operating from a 500,000 sqm state-of-the-art production facility, we employ 2,000+ skilled professionals dedicated to delivering cutting-edge HVAC technologies. GRAD Group holds 1,000+ patents, underscoring our leadership in R&D and technological advancement. Whether for commercial, or industrial applications, we provide energy-efficient, sustainable, and high-performance HVAC solutions tailored to global market needs.
Why Choose GRAD?
✔ 30+ Years of HVAC Expertise
✔ Strong International Presence (100+ Countries)
✔ Advanced Manufacturing with 500,000 sqm Facility
✔ 1,000+ Patents for Innovative Solutions
✔ Commitment to Quality & Sustainability At GRAD, we strive to create comfortable, efficient, and environmentally friendly climate control systems for a better future. For more information, visit our official website or contact us directly.
We offer professional water-cooled central air conditioning customized system services. We can conduct preliminary system design based on the specific needs of each project, ensuring the integrity and efficiency of the entire water-cooling system.











