The Dunham Bush WCS "Proteus" Series is a highly efficient, ultra-compact water-cooled scroll liquid chiller family featuring a cooling capacity range from 12 to 62 RT ($42\text{ to }218\text{ kW}$). Equipped with multiple high-reliability scroll compressors and Dunham Bush's patented shell-and-tube heat exchangers, this series delivers a space-saving blueprint and an excellent Coefficient of Performance (COP). It stands as the premier central comfort and process cooling choice for medium-scale factories, corporate facilities, commercial showrooms, and hospitals across Bangladesh.
Cooling Capacity from 12-62 RT (42 to 218 kW)
The WCS features:
At the heart of the Proteus series is its multiple scroll compressor configuration. By utilizing single or tandem-arranged hermetic scroll compressors on independent refrigerant circuits, the drive system achieves precise multi-step capacity reduction (e.g., $0\%, 25\%, 50\%, 75\%, 100\%$ steps depending on the model). This means the chiller consumes only the exact amount of electricity required to match your building's real-time cooling demands, drastically shrinking monthly utility bills. Furthermore, the entire interior control matrix is heavily insulated against environmental hazards; the housing is inherently dust-proof and water-splash proof, meaning it does not require additional complex enclosures when positioned inside standard indoor plant rooms.
Cooling Capacity: 12 to 62 RT ($42\text{ to }218\text{ kW}$).
Compressor Type: Premium, high-efficiency hermetic scroll compressors arranged in single or tandem configurations.
Heat Exchangers: Patented Dunham Bush high-efficiency shell-and-tube evaporators and condensers.
Refrigerant Options: Environmentally sound green refrigerants (such as R407C) ensuring zero ozone depletion potential.
Control System: Microprocessor-based automated controller with clear diagnostic reporting and safety trip safeguards.
The primary function of the Dunham Bush WCS Chiller is to supply a steady, continuous loop of chilled liquid ($7^\circ\text{C}$) to feed individual terminal units like Fan Coil Units (FCUs) or Air Handling Units (AHUs).
Smooth Crescent Compression: Gas is drawn into twin interlocking spiral scrolls (one fixed, one orbiting). The gas is pushed smoothly to the center port while minimizing physical volume and eliminating sudden valve-piston shocks.
Step Capacity Control: Instead of cycling a large motor completely on and off, the microprocessor turns individual scroll units on or off to precisely match variable building loads.
Thermal Protection: Built-in crankcase heaters continuously prevent liquid refrigerant migration into the compressor oil sump during off-cycles, eliminating cold-start mechanical friction and oil washouts.
Medium-scale public utility buildings—such as regional Bangladesh Bank branches, state-operated laboratory facilities, and multi-story government offices—require highly dependable central cooling plants that don't overload local grid transformers.
Low Starting Currents (LRA): By staging individual scroll motors sequentially, the WCS series prevents massive initial inrush current surges, protecting local backup generator systems from severe voltage drops.
Built-in Phase Security: Integrated Phase Control Relays (PCR) and Under Voltage Relays (UVR) instantly spot grid instability, automatically shutting down the compressor loops safely before damage can occur.
For private enterprise hubs—including corporate headquarters in Gulshan or Motijheel, medium-scale garment buying houses, and localized pharmaceutical packaging rooms—reliable temperature management impacts daily operations.
Whisper-Quiet Rooftop/Basement Running: The rotary orbital action of the scroll profiles creates a continuous, incredibly smooth gas flow. This significantly lowers operating noise and structural vibration compared to noisy old-generation piston machinery.
Cleanable Shell & Tube Vessels: Unlike throwaway plate heat exchangers that clog up easily due to mineral scaling from local groundwater, Dunham Bush’s patented cleanable shell-and-tube design allows maintenance teams to brush away fouling easily, ensuring long-term thermal efficiency.
Procuring a central chiller plant requires experienced technical support. Bhai Bhai Engineering is a trusted engineering supplier in Bangladesh:
100% Original Machinery: We source authentic, brand-new Dunham Bush equipment through authorized factory distribution networks, avoiding the serious risks of gray-market clones or modified parts.
Hands-on Technical Commissioning: Our engineers assist throughout the design verification, pipe connection auditing, water flow balancing, and initial start-up phases on your factory floor.
Clear BDT Commercial Quotes: We provide transparent commercial bids in Bangladeshi Taka (BDT) with no hidden fees, customized for company procurement processes or open public tenders.
Emergency Spare Support: We maintain quick local access to original sensors, electronics, and maintenance consumables to keep your system operational and prevent costly plant delays.
Ready to modernize your building's central HVAC setup or looking for the exact Dunham Bush WCS scroll chiller price in BD? Reach out to our specialized project engineering sales desk today for a detailed technical proposal.
Head Office & Showroom: Podirdia, Khilbarirtek, Vatera, Dhaka-1212. (Nur-E-Madina Mosjid Complex)
Sales Hotlines / WhatsApp: +8801722039029
Corporate Email: bhaibhaiengineering51@gmail.com
Online Platform: https://www.bhaibhaiengineering.com/
Q1: What are the main maintenance advantages of a scroll compressor over a screw compressor for mid-sized setups?
Ans: Scroll compressors feature fewer moving components and a simpler internal compression profile. For mid-range tons (12 to 62 RT), scroll configurations offer lower upfront costs and a smaller physical footprint while delivering quiet operation.
Q2: Does the Dunham Bush WCS series include a built-in safety trip indication system?
Ans: Yes. The front control pane features dedicated diagnostic LED indicators. If a supply voltage malfunction or thermal overload occurs, the system triggers a red trip indicator light while executing an auto-reset sequence once power conditions normalize.
Q3: Can the WCS series operate on standard eco-friendly refrigerants?
Ans: Absolutely. The Proteus WCS series is optimized to utilize environmentally sound green refrigerants (such as R407C), ensuring compliance with international green building certifications and eco-audits.
Q4: How does the step-capacity system save energy during rainy seasons in Bangladesh?
Ans: During rainy spells or evening hours, your building's thermal load decreases dramatically. The WCS microprocessor shuts down redundant compressors in the tandem loop rather than running a massive motor at low efficiency. This scales power draw directly with actual room demand.
At Bhai Bhai Engineering, we take pride in our industry-recognized certifications and achievements. Our dedication to excellence in MEP (Mechanical, Electrical, and Plumbing) solutions is backed by various certifications in central air conditioning systems, fire protection, ventilation, electrical installations, and more. These certifications ensure we meet international standards and deliver top-notch service for your business.
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