The Air-Cooled Chiller range delivers central plant cooling for commercial, industrial, and institutional applications combining advanced compressor technology, intelligent controls, and robust construction in two purpose-matched series that together cover a capacity range from 10TR to 480TR.
Where water-cooled chillers require cooling towers, condenser water pumps, and associated water treatment infrastructure, air-cooled chillers reject heat directly to the ambient air, significantly simplifying plant room design, reducing installation cost, and eliminating the ongoing operational expense of water treatment and consumption. This makes air-cooled chillers the preferred central plant solution for the vast majority of commercial buildings, industrial facilities, and institutional projects across the UAE, GCC, India, and Africa.
The Air-Cooled Scroll Chiller series available from 10TR to 240TR serves small-to-large commercial projects with the proven reliability and efficiency of hermetic scroll compressor technology, including a heat pump model for projects requiring both cooling and heating from a single central plant.
The Air-Cooled Screw Chiller series available from 115TR to 480TR addresses the demands of large commercial, industrial, and district cooling applications with a high-efficiency semi-hermetic twin rotor screw compressor, high-precision flooded evaporator, and advanced intelligent control system delivering industry-leading efficiency at full and part-load conditions.
| Product Information |
|---|
| Specification | Air-Cooled Scroll Chiller | Air-Cooled Screw Chiller |
|---|---|---|
| Capacity Range | 10TR – 240TR | 115TR – 480TR |
| Compressor Type | Hermetic Scroll | Semi-Hermetic Twin Rotor Screw |
| Refrigerant | R-410A | R-134A |
| Evaporator | Shell & Tube | High-Efficiency Flooded |
| Expansion Valve | Electronic | High Precision |
| Defrost Technology | Intelligent Defrost | – |
| Operating Mode | Cooling & Heat Pump | Cooling Only |
| Controls | Intelligent Microprocessor | Intelligent Microprocessor |
| Operating Range | Wide ambient range | Wide ambient range |
| Application | Commercial, Residential, Industrial | Large Commercial, Industrial |
Series A:Air-Cooled Scroll Chiller (10TR to 240TR)
Overview
The Air-Cooled Scroll Chiller series is the most widely specified central plant cooling solution for small-to-large commercial buildings combining the proven reliability of hermetic scroll compressor technology with intelligent controls, eco-friendly R-410A refrigerant, and the added versatility of an available heat pump model.
Available from 10TR to 240TR across multiple models, the scroll chiller series is scalable to match precise project load requirements from a small office building or clinic to a large retail complex or multi-storey residential tower.
Hermetic Scroll Compressor
- Hermetically sealed design:Compressor motor and mechanism enclosed in a sealed shell, eliminating shaft seals and reducing refrigerant leak risk
- High volumetric efficiency:Scroll geometry delivers superior compression efficiency with minimal internal leakage
- Low vibration & noise:Smooth rotary compression mechanism produces significantly less vibration and noise than reciprocating alternatives
- Multiple compressor staging:Larger units feature multiple scroll compressors for capacity staging, part-load efficiency, and built-in redundancy
- Long service life:Fewer moving parts and lower mechanical stress deliver extended mean time between failures
R-410A Refrigerant
- Zero ozone depletion potential (ODP)-Environmentally responsible refrigerant compliant with international and UAE regulations
- High operating efficiency-R-410A operates at higher pressures, enabling more efficient heat transfer and better compressor performance
- UAE Environmental Compliance-Compliant with UAE Ministry of Climate Change and Environment refrigerant regulations
- Widely available -Established supply chain across UAE, GCC, India, and Africa for easy service and maintenance
Intelligent Defrosting Technology
- Demand-based defrost Defrost cycle is initiated only when ice formation is detected avoiding unnecessary defrost cycles that waste energy and reduce cooling output
- Rapid defrost completion Optimised defrost algorithm minimises the duration of each defrost event, restoring full cooling capacity quickly
- Critical for heat pump operation Reliable defrost management ensures consistent heating performance in heat pump mode during cooler ambient conditions
- No manual intervention Fully automated defrost management without operator input
Heat Pump Model
The Air-Cooled Scroll Chiller is available in a heat pump configuration providing both chilled water for cooling and hot water for heating from a single central plant unit:
- Year-round operation Single unit delivers cooling in summer and heating in winter, eliminating the need for separate boiler plant
- Energy-efficient heating Heat pump heating delivers 3–4 units of thermal energy per unit of electrical energy consumed far more efficient than electric resistance heating
- Ideal for: Hotels, hospitals, residential towers, and mixed-use developments requiring both cooling and heating from central plant
- Reduced plant room footprint Combined cooling and heating from one unit reduces the number of plant items and associated pipework
Series B:Air-Cooled Screw Chiller (115TR to 480TR)
Overview
The Air-Cooled Screw Chiller series is engineered for large-scale commercial, industrial, and district cooling applications delivering industry-leading efficiency and reliability at capacities from 115TR to 480TR. The semi-hermetic twin rotor screw compressor, high-efficiency flooded evaporator, high-precision expansion valve, and intelligent control system combine to produce a chiller optimised for both full-load and part-load efficiency in the most demanding operating environments.
High-Efficiency Semi-Hermetic Twin Rotor Screw Compressor
- Semi-hermetic design – Motor is accessible for field servicing without removing the compressor from the system reducing maintenance complexity and cost for large-capacity units
- Twin rotor screw geometry – Male and female rotors mesh to compress refrigerant in a continuous, smooth compression process, delivering high efficiency with low vibration
- Stepless capacity control – Slide valve modulates compressor capacity continuously from minimum to full load, providing precise matching of cooling output to building demand
- High part-load efficiency – Screw compressor technology is particularly efficient at part-load conditions, the most common real-world operating state for large commercial chillers
- Low maintenance intervals – Robust rotor geometry and semi-hermetic access design reduce service frequency and maintenance labour costs
R-134A Refrigerant
- Zero ODP – Environmentally responsible refrigerant with no ozone depletion potential
- Optimised for large capacity – R-134A operates at lower pressures than R-410A, making it the preferred refrigerant for large screw and centrifugal compressor applications
- Stable long-term availability – Established global refrigerant with a clear regulatory compliance timeline
- High energy efficiency – Lower operating pressures reduce compressor work, contributing to high COP at full and part-load
High-Efficiency Flooded Evaporator
- Flooded shell-and-tube design – Refrigerant floods the shell side of the evaporator, completely submerging the chilled water tubes for maximum heat transfer contact
- Superior heat transfer coefficient – Flooded evaporator technology delivers significantly higher heat transfer efficiency compared to direct expansion evaporators, directly improving chiller COP
- Low refrigerant superheat – Flooded operation minimises superheat at the compressor suction, improving volumetric efficiency
- Freeze protection – Integrated freeze protection controls prevent chilled water freezing during low-load or startup conditions
High Precision Expansion Valve
- Electronic expansion valve (EEV): Precisely controls refrigerant flow into the evaporator based on real-time superheat and system conditions
- Optimised refrigerant distribution: Ensures consistent refrigerant flow across all evaporator circuits for uniform heat transfer
- Part-load optimisation: EEV continuously adjusts to changing load conditions, maintaining optimal evaporator performance across the full operating range
- Reduced energy consumption: Precise flow control minimises refrigerant pressure drop and compressor lift, improving overall system efficiency
Intelligent Control System
- Advanced microprocessor controller – Continuously monitors and manages all chiller operating parameters including chilled water temperature, compressor staging, capacity control, and safety functions
- Predictive capacity management – Anticipates load changes and adjusts compressor capacity before temperatures drift outside tolerance
- Remote monitoring – BMS integration via Modbus, BACnet, or LonWorks for centralised plant monitoring and control
- Fault diagnostics – Comprehensive alarm management with fault history logging for predictive maintenance and reduced downtime
- Energy optimisation – Intelligent chilled water reset and demand limiting strategies minimise energy consumption at part-load
- Data logging – Operating history and energy data recorded for performance analysis and compliance reporting
Applications
Air-Cooled Chillers are the central plant solution of choice across a wide range of commercial and industrial project types:
- Commercial Office Buildings – Central chilled water plant serving fan coil units, AHUs, and VRF systems across multiple floors
- Hotels & Resorts – Reliable large-capacity cooling with heat pump model for simultaneous heating of domestic hot water and space heating
- Hospitals & Healthcare – Continuous-duty chilled water plant for critical cooling of wards, theatres, and data infrastructure
- Shopping Malls & Retail – High-capacity scroll or screw chillers serving large retail floor plates with multiple AHUs and FCUs
- Industrial Facilities – Process cooling and worker comfort in manufacturing, food processing, and pharmaceutical production environments
- Data Centres – Precision chilled water supply for CRAC units, in-row cooling, and rear-door heat exchangers
- Universities & Schools – Central plant cooling for large campus buildings with multiple air handling units
- District Cooling – Screw chillers as primary plant in district cooling stations serving master-planned developments across the UAE and GCC
Why Choose Air-Cooled Over Water-Cooled Chillers
- No cooling tower required – Eliminates cooling tower capital cost, installation space, and ongoing water treatment and consumption expenses
- Lower installation cost – No condenser water pipework, pumps, or water treatment systems to install
- Reduced water consumption – Critical in water-scarce regions including the UAE, GCC, and arid parts of Africa and India
- Simpler maintenance – No cooling tower to clean, treat, or maintain, reducing facilities management burden and Legionella risk
- Faster commissioning – Fewer system components and simpler pipework reduces installation and commissioning time
- Ideal for rooftop installation – Self-contained air-cooled design with integrated condenser fans, purpose-suited to rooftop plant areas
