ACX-HP Air Cooled Screw Heat Pump

Cooling Capacity from 99 to 450 RT (347 to 1582 kW)
Heating Capacity from 99 to 450 RT (347 to 1582 kW)

The ACX-HP Series features:

• Quiet Vertical Hermetic Screw Compressors
• Unique Low Noise Control Design
• Improved Shell & Tube Evaporator
• Advanced Microprocessor Based Controller
• Green Refrigerants

The Dunham Bush ACX-HP Series represents a major shift in commercial climate control, replacing complex separate boiler and chiller combinations with an elegant, all-in-one thermodynamic system. Traditional commercial buildings waste substantial energy by using standalone gas boilers for heating while running independent air conditioners to cool interior spaces. The ACX-HP series utilizes a high-efficiency vapor compression cycle to move heat from low-temperature sources and upgrade it to useful, high-temperature output for process hot water or space heating.

The foundation of this performance rests on Dunham Bush's quiet vertical hermetic screw compressors. The vertical configuration achieves exceptionally low vibration levels and a minimized physical footprint compared to traditional horizontal compressor bodies. Because the design is hermetic, it completely eliminates drive gears and external shaft seals, eliminating the typical leakage pathways found in older machines and ensuring an exceptionally long operational lifespan with minimal maintenance requirements.

To maximize heat transfer efficiency, the ACX-HP features an improved shell-and-tube heat exchanger. This design maximizes internal fluid dynamics, keeping the approach temperatures exceptionally tight and elevating the system's Coefficient of Performance (COP). The heavy-duty structural frame features an open V-coil condenser profile designed to maximize air movement through the multi-slit aluminum fins, allowing the unit to maintain smooth operation in high-ambient tropical environments.

Key Technical Highlight Matrix

Core Functions of the Dunham Bush ACX-HP Series

• Reversible Thermodynamic Loop Operation: Seamlessly switches internal cycle routing to act as a high-tonnage central chiller during hot summer peaks, or a heavy-duty hot water generator during cooler seasons.

• Stepless Internal Capacity Modulation: Utilizes a rugged, hydraulically driven internal slide valve mechanism that continuously scales compressor output to match your facility's real-time demand. This avoids energy-wasting on/off electrical spikes.

• Unique Low-Noise Control Design: Incorporates acoustic silencing features directly around the vertical screw compression chambers and discharge mufflers. This controls acoustic signatures, making it perfect for sound-sensitive properties.

• Proactive Fault Prevention Control: The advanced microprocessor panel continuously monitors critical parameters, including phase balancing, oil-pressure differentials, and thermal trends. It handles protective overrides automatically before critical component damage can occur.

Industrial Importance in Bangladesh

1. Government Institutes, Healthcare & Public Assets

Public infrastructure—such as national medical college hospitals, research facilities, and state diagnostic laboratories—requires steady climate control and large, reliable supplies of hot water for sanitization, laundry loops, and central air systems.

• Reduces National Grid Strain: By utilizing an air-cooled heat rejection framework, the ACX-HP requires zero fresh water or cooling tower makeup lines, helping conserve local water infrastructure.

• Eliminates Boiler Fuel Risks: Utilizing electricity to harvest environmental heat removes the risk of fluctuating natural gas line pressures, providing consistent heating and cooling capability year-round.

2. Private Sector Enterprises, RMG Mills & Pharma Labs

For major industries—such as high-density textile plants, garment washing stations, cleanroom pharmaceutical production, and corporate offices—maintaining absolute climate stability is crucial for operational output.

• Sustained Energy Savings: The excellent part-load values (IPLV) noticeably lower a factory's monthly commercial electricity bills, helping businesses meet strict international green factory standards.

• Cleanable Heat Exchangers: The improved shell-and-tube design features removable water heads. This allows maintenance teams to quickly clear out mineral scaling caused by hard local groundwater without needing to disrupt primary refrigerant circuits.

Why Buy From Bhai Bhai Engineering?

Procuring a heavy-duty central heat pump system requires a technical partner you can trust. Bhai Bhai Engineering delivers professional industrial support across Bangladesh:

• Verified Authentic OEM Equipment: We deal directly with authorized factory channels, ensuring you receive 100% genuine, brand-new Dunham Bush machinery with clean factory serial tracking.

• Comprehensive Project Engineering: Our local technical specialists assist with your entire setup, from concrete foundation layout checks and hydronic pipe balancing to electrical testing and live system commissioning.

• Transparent Local Financial Proposals: Avoid unexpected logistics or import surcharges. We provide clear, upfront pricing proposals in Bangladeshi Taka (BDT) designed to align cleanly with your enterprise budgeting processes or public tender structures.

• Long-Term Preventive Spare Parts Support: We maintain local stocks of critical microprocessor items, electronic expansion components, and original maintenance kits to minimize unexpected production downtime.

Contact Us for a Quotation

Equip your commercial or industrial project with elite, dual-purpose heat pump 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 Platform: https://www.bhaibhaiengineering.com/

Frequently Asked Questions (FAQs)

Q1: What are the main benefits of choosing an air-cooled heat pump like the ACX-HP over a water-cooled model?

Ans: The ACX-HP operates strictly on an air-cooled heat transfer cycle. This completely removes the need to buy and maintain external cooling towers, water treatment chemicals, and heavy water delivery piping, saving space and lowering regular maintenance costs.

Q2: How does the vertical screw compressor minimize noise compared to older designs?

Ans: The Dunham Bush vertical hermetic screw design features a balanced mechanical load distribution, yielding less internal friction and vibration. Combined with an integrated low-noise control design, it runs much more quietly than traditional horizontal compressors.

Q3: Can the ACX-HP handle severe voltage variations from the local electrical grid?

Ans: Yes. The advanced integrated microprocessor controller monitors incoming electrical phase symmetry, current overload trends, and low-voltage fluctuations. If power drops past safe operational margins, it triggers a protective safety shutdown to protect the screw motor.

Q4: Is it easy to maintain the heat exchangers if our water supply has high mineral content?

Ans: Yes. The improved shell-and-tube evaporator features fully cleanable water tubes. Your engineering team can open the removable water heads to mechanically brush away scaling, keeping heat transfer performance high over a long machine life.