Air Cooled Scroll Chiller 320-920 kW IDV Variable Capacity Zero Water Consumption R410A IEER 4.7 4.8

For energy managers evaluating total environmental impact, this air-cooled scroll chiller with IDV technology delivers class-leading electrical efficiency (IEER 4.7-4.8, up to 40% energy savings) combined with zero water consumption. In regions facing water stress – increasingly correlated with cooling demand – eliminating cooling tower water consumption provides strategic sustainability advantages beyond operational convenience.

The IDV (Independent Double Variable) system enables continuous stepless modulation from 12.5% to 100%, eliminating energy waste from on/off cycling or hot gas bypass. Combined with the air-cooled design requiring zero water for heat rejection, this solution offers one of the lowest environmental footprints in its capacity class across energy, water, and refrigerant metrics.

Since commercial chillers operate at peak load for only 1-5% of annual hours, part-load efficiency determines annual energy consumption. The IDV system achieves IEER values of 4.7-4.8 – among the highest for scroll chillers in this range – translating to up to 40% energy savings versus conventional fixed-capacity models and directly reducing Scope 2 carbon emissions.

• IEER 4.7-4.8 – Industry-leading integrated efficiency
• 12.5%-100% stepless modulation – No cycling waste at any load point
• Up to 40% energy savings – Versus fixed-capacity conventional chillers
• Lower Scope 2 emissions – Reduced electricity consumption means less carbon
• Favorable energy benchmarking – Outperforms most competing products
• ROI from energy savings – Premium typically recovered in 2-4 years

Air-cooled chillers require zero water for heat rejection. By comparison, equivalent water-cooled chillers consume approximately 2-4 liters per second of makeup water through evaporative cooling tower losses – representing 36,000-72,000 cubic meters per 5,000-hour cooling season. This elimination is crucial in drought-prone or water-stressed regions.

• Zero cooling tower water consumption – Eliminates 36,000-72,000 m³ per season
• No water treatment chemicals – Eliminates biocide and inhibitor environmental impact
• No Legionella risk – Removes testing, treatment, and liability costs
• No blowdown discharge – Eliminates contaminated water disposal
• Water stress resilience – Operations unaffected by water restrictions
• ESG water disclosure advantage – Dramatically lower water footprint

The RHAE/RCAE series features two independent refrigerant circuits. During normal part-load operation, only one circuit runs at high efficiency, with the second activating only when load exceeds single-circuit capacity. This provides essential uptime redundancy without energy penalty during typical operation.

• Single-circuit efficiency at part load – One circuit runs at optimum point
• No redundancy energy penalty – Backup capacity available without waste
• Shared load at moderate demand – Both circuits in efficient range
• Graduated capacity response – Smooth ramp-up matches actual demand
• Maintenance without energy loss – One circuit serviced while other runs at full capacity
• Consistent efficiency data – Predictable energy consumption across operating scenarios

The scroll chiller's compact design eliminates not only the cooling tower but all associated water infrastructure: pumps, pipes, treatment systems, blowdown drains, and makeup water connections. This reduces both embodied carbon from manufacturing and operational environmental impacts.

• No cooling tower embodied carbon – Eliminates tower manufacturing emissions
• No water pump energy – Additional electrical savings
• No water treatment chemical supply chain – Reduced Scope 3 emissions
• Simpler environmental management system – Fewer processes to monitor and report
• Reduced maintenance waste – No tower fill replacement, no chemical containers
• Faster environmental certification – Fewer systems to document and verify

Standard Modbus and BACnet connectivity enables direct integration with building energy management systems. The controller outputs real-time energy consumption, operating capacity, and efficiency metrics for energy audits, carbon reporting, and sustainability disclosures.

• Real-time energy data – Consumption, capacity, and efficiency metrics
• ISO 50001 audit-ready – Verified energy consumption records
• GHG Protocol Scope 2 compliant – Electricity data for carbon calculations
• Portfolio benchmarking – Compare performance across properties
• Performance gap detection – Identify anomalies before they become waste
• Automated reporting – Data feeds directly into ESG and sustainability platforms

Scroll compressor technology maintains consistent efficiency over decades of operation. Unlike systems with progressive efficiency degradation from oil fouling or component wear, the scroll chiller's sealed system maintains near-nameplate efficiency throughout its 20+ year design life.

• 20+ year consistent efficiency – No progressive degradation
• Sealed system design – No oil fouling of heat exchangers
• Accurate long-term energy projections – No annual degradation factor needed
• Predictable lifecycle emissions – Carbon models remain valid
• Lower lifecycle carbon intensity – Efficient operation compounds over decades
• Simplified replacement planning – Known performance at end of life