ACM-AE – Athena Air Cooled Magnetic Bearing Chiller

Cooling Capacity from 87 to 502 RT (306 to 1765kW)

The ACM-AE features: 

• Oil-Free Magnetic Bearing Technology
• Inverter-Driven Dual-Stage Compressor
• Energy-Saving Condenser Fans
• Low Noise Operation
• Advanced Microprocessor Controller
• High Efficiency and IPLV
• AHRI Certified
• Green Refrigerants

By floating the compressor shaft on an electromagnetic cushion, mechanical contact, friction losses, and complex oil management lines are entirely eliminated. This keeps the internal flooded shell-and-tube heat exchange surfaces completely free of oil-film contamination, preserving factory-level heat transfer coefficients over decades of operation.

The ACM series features a structural V-coil condenser configuration that optimizes air distribution while keeping the overall unit footprint remarkably compact. Standard builds are outfitted with high-intensity, variable speed EC condenser fans that automatically adjust their RPM to match changing outdoor ambient temperatures. Furthermore, the unit is constructed on a rigid structural steel base to prevent frame deflection during crane hoisting, and all sensitive electrical clusters are housed in a robust weatherproof enclosure to handle heavy tropical monsoons.

Key Technical Highlight Matrix

Core Functions of the Dunham Bush ACM Series

• Frictionless Magnetic Levitation: Axially and radially floats the internal compressor assembly on magnetic lines, removing standard mechanical wear, bearing replacement liabilities, and oil maintenance routines.

• Dynamic Variable Speed Tuning: Pairs an integrated frequency inverter drive with an economizer cycle, allowing the chiller capacity to drop smoothly during variable off-peak shifts or rainy weather, cutting partial load energy bills drastically.

• EC Fan Volume Modulation: Constantly tracks real-time head pressures via the advanced onboard controller, scaling condenser fan speeds up or down to ensure steady cooling performance.

• Flooded Evaporation Heat Exchange: Runs chilled water loops through enhanced copper tubes submersed in liquid refrigerant. Removable water heads make it easy to brush away scaling deposits left by local industrial hard water sources.

Industrial Importance in Bangladesh

1. Government Institutes & High-Security Infrastructure

Public infrastructure projects—including national tier-classified data centers, central bank computing rooms, state telecom hubs, and modern public medical facilities—require absolute cooling reliability without wasting fresh groundwater assets.

• Zero Fresh Water Footprint: Because the ACM series operates on an air-cooled cycle, it eliminates fresh water evaporation losses, water treatment chemical lines, and large cooling towers. This makes it the ideal environment-friendly choice for regions across Bangladesh experiencing groundwater strain.

• Low Noise Footprint: The frictionless levitated shaft operation creates an incredibly smooth noise spectrum with zero mechanical pounding. This allows safe rooftop placement near public office desks or hospital recovery wings.

2. Private Companies, Data Centers & RMG Hubs

For continuous production systems—such as high-density IT cloud infrastructures, pharmaceutical labs, and large-scale textile or Ready-Made Garments (RMG) complexes—uncontrolled indoor temperatures can trigger immediate downtime.

• Slashes Peak Grid Costs: The extreme part-load values (IPLV) of the magnetic bearing drive significantly trim down monthly energy overheads. This prevents high demand current spikes from overloading local private factory transformers.

• Streamlined Roof Placement: The tight V-coil configuration keeps the installation profile compact, saving valuable rooftop area for solar array expansions or standard facility operations.

Why Buy From Bhai Bhai Engineering?

Procuring and commissioning a multi-ton magnetic bearing centrifugal chiller plant requires an experienced technical partner. Bhai Bhai Engineering is a trusted industrial supplier in Bangladesh:

• 100% Genuine Factory Sourcing: We coordinate directly with factory manufacturing networks, supplying authentic, brand-new Dunham Bush units backed by clean, trackable serial numbers and factory run tests.

• Complete Engineering Support: Our local technical team assists from layout verification through parameter setup, pipeline integration, and final live testing phases.

• Transparent BDT Commercial Proposals: Avoid hidden import fees. We offer clean, upfront pricing structures tailored for enterprise budgeting and formal public tenders.

• Reliable Long-Term Maintenance Agreements: We maintain local access to genuine parts, technical components, and expert maintenance support to keep your central plant running smoothly for decades.

Contact Us for a Quotation

Equip your facility with elite central cooling efficiency. Reach out to our specialized project sales engineering desk in Dhaka to receive a customized commercial proposal and technical data sheets based on your specific load configurations.

• 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 an oil-free magnetic bearing chiller over a standard screw chiller?

Ans: The ACM series is completely oil-free. It eliminates oil management components, oil heater lines, and separators. This significantly lowers routine maintenance and prevents oil film accumulation inside evaporator tubes, keeping your heat transfer rates running at maximum efficiency over decades.

Q2: How does the variable EC fan array help save energy in Bangladesh?

Ans: During rainy spells, winter cycles, or night shifts, outdoor temperatures drop. The advanced microprocessor detects this change and dials down the speed of individual EC condenser fans, trimming auxiliary fan energy draw to a bare minimum.

Q3: Can the Dunham Bush ACM series withstand high-humidity environments?

Ans: Yes. The compressor assembly features a weatherproof enclosure to shield internal control loops, and the electronic control matrix is heavily insulated against dust and humidity, making it reliable under Bangladeshi tropical monsoons.

Q4: Are these chiller models certified for international building audits?

Ans: Absolutely. The entire lineup carries full AHRI Certification under Standard 550/590, matches or exceeds international ASHRAE 90.1 energy criteria, and uses eco-conscious green refrigerants (R134a/R513A). This provides complete compliance for green factory initiatives and international building audits.