Air Cooled Screw Chiller Without Cooling Tower
1.It can operate stably in an ultra-low temperature environment of -35℃
2. Precise frost measurement, rapid defrosting, reduced defrosting frequency, and shortened defrosting time
3. Mobile APP operation, fault warning, and online diagnosis
4. It operates efficiently within an ultra-wide ambient temperature range of -35℃ to 43℃
5. COPh > 2.6 exceeds the national standard energy efficiency limit value, and IPLV(H) exceeds the national standard first-level energy efficiency
Air Cooled Screw Chiller Without Cooling Tower
The GRAD Air source heat pump unit is equipped with a self-developed NB-iot Internet of Things remote intelligent control module. It can be operated via a mobile phone APP and does not require dedicated personnel to stand by. It also features fault prediction Warning alerts and online diagnosis. It can operate efficiently in an ambient temperature range of -30 ° C to 43 ° C, with a maximum water outlet temperature of 60 ° C. It comes in various terminal forms and is suitable for radiators and floors Radiation, central air conditioning for cooling and heating. The national patented intelligent defrosting technology accurately detects frost, quickly defrosts, significantly reduces the frequency of defrosting, and greatly shortens the defrosting time. In addition, this unit also has unique advantages such as modular customization, no need to build a machine room, environmental protection and energy conservation, high efficiency and low noise, and wide application range.
Advantages
1. No Cooling Tower Required, Save Massive Auxiliary Investment
Fully air-cooled heat dissipation design, eliminates the need for cooling towers, cooling water pumps, water treatment equipment and related pipework.
Cuts civil construction costs for tower foundations, water tank rooms and pipeline trenches; perfect for factories, commercial buildings, data centers, and projects with limited rooftop/ground space.
Zero cooling water circulation system, avoids water waste, ideal for water-shortage regions and eco-friendly green building projects.
No water scaling, algae or pipeline corrosion issues caused by circulating cooling water.
2. Ultra-Easy On-site Installation & Fast Commissioning
Complete integrated factory unit: compressors, condensers, evaporators, control cabinet, refrigerant piping and electrical components are fully pre-assembled and tested before delivery.
Only simple chilled water piping and power wiring needed on site, no complex water system layout work.
Compact monoblock structure, can be directly placed on rooftops, ground floors or open plant areas without dedicated machine room renovation.
Modular combination support: multiple units can be connected in parallel freely to flexibly adjust cooling capacity according to actual load demand.
3. Low Maintenance Cost & Simple Daily Upkeep
Abandoned cooling water system removes regular tasks like water quality testing, dosing cleaning, tower mud removal and pipeline descaling.
External fin condenser only needs simple seasonal dust washing; internal closed refrigerant circuit requires infrequent inspection.
Open-type maintenance layout design, all core components (screw compressor, filter drier, expansion valve, electrical control box) are fully accessible without dismounting the whole machine.
Intelligent fault self-diagnosis system displays error codes directly on the touch screen, quickly locating abnormal parts and shortening maintenance downtime.
Application
Towerless air-cooled screw chillers for commercial & industrial cooling. Fit malls, hotels, data centers, food, chemical & electronics factories, great for water-shortage areas.
All-in-one air-cooled screw chiller units, easy outdoor rooftop installation. Reliable temperature control for HVAC and manufacturing process cooling worldwide.
About Us
GRAD boasts a global sales footprint spanning more than 100 countries and territories, including the United States, Australia, Indonesia, Malaysia, the UAE, Thailand, Nigeria and more. To advance our worldwide strategic layout, we have founded a subsidiary in the United States, alongside representative offices in Cambodia and Thailand.
Company Profile
Manufacturer: Shandong GRAD Group Co., Ltd.
Founded: 1993
Plant Area: 700,000 square meters
Core Product Lines: Central air conditioning units, ventilation equipment, FRP composite products, environmental protection equipment
Workforce: Over 2,500 staff members
Registered Capital: RMB 100 million
Total Investment in Production Equipment: RMB 370 million
Total Corporate Assets: RMB 925 million
Annual Output Value: Exceeding RMB 3 billion
R&D & Design Team: More than 300 professional engineers
Overseas Institutions:
Representative offices in Thailand & Cambodia
Wholly-owned subsidiary in the United States










