ACDS – Zeus Air Cooled Scroll Chillers

Cooling Capacity from 10 to 180 RT (35 to 633 kW)

The ACDS features:-

• Multiple Scroll Compressors
• High Efficiency Plate Heat Exchanger (PHE)
• High Efficiency and COP
• AHRI Certified
• ETL Certified *
• Green Refrigerants
• 60Hz Only

ACDSV-E – Zeus Air Cooled Inverter Scroll Chillers

Cooling Capacity from 10 to 100 RT (37 to 352 kW)

The ACDSV-E features: –

• Inverter/Hybrid inverter scroll compressor system
• High Efficiency Plate Heat Exchanger (PHE)
• EC Condenser Fans
• High Efficiency and COP
• AHRI Certified
• ETL Certified*
• Green Refrigerants

*60Hz Only

By staging multiple scroll compressors across independent circuits, the chiller matches real-time thermal building loads smoothly. This staging eliminates the frequent, high-current on/off spikes typical of single large motors, ensuring consistent energy savings during off-peak times or partial loads.

To maximize heat exchange within a minimal spatial profile, the ACDS series utilizes a high-efficiency Brazed Plate Heat Exchanger (BPHE) as its evaporator. Unlike standard shell-and-tube setups, the BPHE design seals conductive channels in a compact unit, dramatically reducing the total required refrigerant charge and maximizing the heat transfer coefficient. On the air side, the staggered copper tube and aluminum fin condenser grid work with low-noise, direct-drive propeller fans to vent heat effectively into the atmosphere, even when ambient summer temperatures rise.

Key Technical Highlight Matrix

Core Functions of the Dunham Bush ACDS Series

• Intelligent Lead-Lag Compressor Sequencing: The onboard microprocessor monitors compressor runtimes and alternates the starting sequence. This equalizes wear and tear across all scroll motors and extends the overall operating lifespan of the central plant.

• True Counter-Flow Thermal Exchange: The BPHE evaporator enforces a true counter-flow path between the refrigerant and water loops. This design yields exceptionally close approach temperatures and lowers pump energy draw.

• Proactive Electrical Supply Guarding: Includes an integrated Over/Under Voltage and Phase Monitoring Module (OUVR). It protects compressor windings from brownouts, phase loss, or sudden voltage imbalances common in local electrical grids.

• Sub-Cooling Circuit Enhancement: Features an integrated sub-cooling loop within the condenser coils. This design increases total cooling tonnage without drawing additional power from the main grid.

Strategic Importance Across Bangladesh

1. Government Institutes, Healthcare & Tech Hubs

Public utility infrastructure—such as municipal data registries, state-run diagnostic clinics, banking computer rooms, and administrative secretariats—needs constant indoor temperature control without consuming massive amounts of space or water.

• Zero Water Tower Dependency: Because it rejects heat directly into the ambient air, the ACDS series frees public facilities from operating large water storage tanks, fresh-water plumbing lines, and cooling towers.

• Ultra-Compact Footprint: The combination of a BPHE evaporator and a compact V/W shape layout means this chiller can fit into tight spaces, making it ideal for rooftop retrofits or small ground plots in dense urban areas like Dhaka.

2. Private Sector Offices, Garments & Commercial Projects

For corporate offices, commercial high-rises, boutique pharmaceutical labs, and mid-sized manufacturing or garment facilities, operational uptime directly impacts business performance.

• Built-in Mechanical Redundancy: Featuring multiple independent scroll compressors, if one circuit requires routine filter or sensor maintenance, the secondary circuit stays online. Your facility remains cool and operational.

• Weatherproof Outdoor Durability: The electrical system is housed in a heavy-gauge galvanized steel enclosure finished with a baked powder coat. It easily withstands high humidity and intense tropical monsoon downpours.

Why Buy From Bhai Bhai Engineering?

Sourcing an enterprise-grade central cooling asset requires a technical partner you can trust. Bhai Bhai Engineering delivers professional industrial support across Bangladesh:

• 100% Genuine Factory Imports: We work directly with global OEM manufacturing channels, delivering authentic, factory-tested Dunham Bush chillers with traceable serial numbers.

• Comprehensive Project Engineering: Our engineering team assists with your entire setup, from structural placement and hydronic pipe balancing to electrical testing and live system commissioning.

• Transparent Pricing Structures: Avoid unexpected logistics or import surcharges. We provide clear, upfront pricing proposals in Bangladeshi Taka (BDT) tailored to help you secure corporate approval or clear public tenders.

• Reliable Long-Term Spare Parts Support: We maintain local stocks of critical microprocessor parts, electronic sensors, and original expansion valves, protecting your business from costly downtime.

Contact Us for a Quotation

Equip your facility with elite, space-saving cooling technology. Get in touch with our engineering sales desk in Dhaka today to receive a customized commercial quotation and technical product drawings based on your specific project needs.

• Corporate Headquarters: Podirdia, Khilbarirtek, Vatera, Dhaka-1212. (Nur-E-Madina Mosjid Complex)

• Sales & Project WhatsApp: +8801722039029

• Corporate Mailbox: bhaibhaiengineering51@gmail.com

• Engineering Portal: https://www.bhaibhaiengineering.com/

Frequently Asked Questions (FAQs)

Q1: What are the main benefits of multiple scroll compressors instead of a single large compressor?

Ans: Using multiple tandem or trio scroll compressors delivers excellent part-load efficiency. When your building requires less cooling, the system simply powers down unneeded compressors. This maintains your target chilled water temperature while cutting your energy bills.

Q2: How does a Brazed Plate Heat Exchanger (BPHE) compare to older shell-and-tube designs?

Ans: A BPHE is significantly smaller and lighter while providing exceptionally high heat transfer rates. Because of its compact internal channels, the chiller operates with a much smaller refrigerant charge, saving money and supporting eco-friendly building standards.

Q3: Can the Dunham Bush ACDS series handle power fluctuations from the local grid?

Ans: Yes. The Micro Vision control panel includes built-in protection modules that actively monitor phase loss, phase reversals, under-voltage drops, and current imbalances. The system automatically executes a safe shutdown if power drops out, protecting the compressor motors from burning out.

Q4: Is the ACDS series suitable for outdoor rooftop installation in high-humidity areas?

Ans: Absolutely. The outer frame is made from thick galvanized steel treated with a baked powder coat finish. The electrical panels are completely weather-tight, protecting all internal electronics from heavy monsoons and high humidity.