Oil-Free Inverter Magnetic Levitation Separator Integrated Evaporative Cooling Chiller Unit

Product Overview

In today's world of increasingly scarce energy resources, Wotech remains committed to continuously meeting customer needs. Guided by a global environmental mission and a future vision of enhancing energy efficiency, we have successfully launched a new generation of highly reliable integrated evaporative condensing magnetic levitation chillers. This achievement builds upon the latest technological advancements in the refrigeration and air conditioning field. This product integrates numerous technological achievements from Wotech: High-efficiency evaporative condensation technology, High-efficiency magnetic levitation technology, Self-adaptive differential pressure oil supply and efficiency enhancement technology, Evaporative chiller heat recovery technology, High-efficiency multi-stage oil separation technology, and more. It represents the perfect culmination of Wotech's 20 years of technological expertise.

Wotech Integrated Evaporative Condensing Magnetic Levitation Chiller is a high-efficiency magnetic levitation chiller featuring built-in cooling source and chilled water power modules. It integrates traditional water-cooled chillers, cooling towers, cooling water pumps, chilled water pumps, and constant pressure makeup water devices. Customers need only connect chilled water pipes and power supply for efficient operation. As a frame-mounted room system, it can directly replace conventional air conditioning rooms and serves as a new type of chilled water system for outdoor installation. This product is widely applicable for central air conditioning projects in subways, hotels, schools, shopping malls, hospitals, and other venues. It can also be used for process cooling in industrial production sectors such as pharmaceuticals, electronics, and precision instruments. With the implementation of national energy conservation and emission reduction policies, Wotech's integrated evaporative condensing magnetic levitation chillers will gain increasing favor.

Product Features

Highly energy-efficient

Flooded Evaporative Cooling Dedicated High-Efficiency Screw Compressor: Features the most advanced screw profile design, high

Precision machining techniques achieve volumetric efficiency as high as 95%; Utilizes internationally renowned high-efficiency fluorine-resistant motors, various

Operates at peak efficiency under all operating conditions.

High-efficiency Flooded Evaporator: Utilizing flooded evaporation technology, it offers higher thermal efficiency compared to traditional dry evaporators.

Increase by more than three times, and the unit's cooling energy efficiency can be improved by 14%.

High-Efficiency Evaporative Condenser:

☆ The condensation heat of the refrigerant is directly discharged to outdoor air and water, eliminating the need for an intermediate heat exchange stage in the cooling water system. This reduces the unit's condensing temperature by approximately 4°C compared to traditional water-cooled units, boosting refrigeration efficiency by 12%. It also eliminates the need for cooling water pumps, significantly reducing power consumption.

☆ The recirculating water spray system employs high-flow, clog-resistant basket-type nozzles to ensure continuous and uniform water distribution. This facilitates thorough heat exchange between water, air, and refrigerant, guaranteeing the condenser's optimal heat transfer performance.

☆ Utilizing air-to-air counterflow heat exchange technology combined with PVC packing for cooling, achieving highly efficient refrigerant condensation.

Self-contained Cooling Source: The compressor is fully interlinked with the condenser fan and water pump. During partial load operation, the condenser fan and water pump automatically unload or shut down. This effectively eliminates the drawback where the cooling water pump and cooling tower continue to operate at full load after the compressor unloads and stops in water-cooled systems, significantly enhancing the operational efficiency of the air conditioning system.

Stepless Energy Control: The unit employs fuzzy logic control to monitor refrigeration load in real time based on chilled water temperature fluctuations, enabling stepless adjustment of compressor capacity to accommodate dynamic load changes. This achieves high part-load efficiency with water temperature control accuracy reaching ±0.5°C.

Exceptional Quality

High-Reliability Compressor: The screw compressor features fewer moving parts. Its internationally renowned brand incorporates a high-efficiency fluorine-resistant motor with an integrated PTC electronic protection module. Equipped with Swedish SKF rolling bearings for the main shaft, it boasts a lifespan of up to 100,000 hours. To date, tens of thousands of these compressors are operating worldwide.

Each unit undergoes rigorous airtightness and vacuum testing to ensure no leakage points exist in the entire machine or its components. Strict performance, corrosion resistance, and durability tests guarantee that every unit is a highly reliable product.

The evaporative condenser frame and casing plates utilize premium galvanized aluminum-zinc sheets or stainless steel plates, which are among the most corrosion-resistant materials available today. Their service life is 3 to 6 times longer than that of ordinary galvanized sheets, offering advantages such as high thermal resistance, excellent heat tolerance, and an aesthetically pleasing appearance. After welding, the heat exchanger undergoes comprehensive hot-dip galvanizing to enhance its corrosion resistance.

The unit's cooling water system is equipped with an electronic descaler to remove scale from the open-loop cooling water, eliminate algae, and enhance operational efficiency and reliability.

Reliable Oil Treatment System: The compressor incorporates a patented high-efficiency oil separator, while an external unit combines mechanical and adsorption technologies for secondary oil removal. Additionally, a unique evaporator concentration and ejector oil return technology is employed. This enhances heat exchange efficiency while ensuring the unit's reliability.

Self-Adaptive Differential Pressure Oil Supply and Efficiency Enhancement Technology (Optional) ☆ During low-temperature refrigeration in winter, automatically adjusts the opening of the compressor discharge pressure stabilizing valve to maintain discharge pressure at the required minimum threshold. This enhances unit operational efficiency while ensuring the necessary oil supply differential pressure.

Easy Installation

Featuring an integrated structural design, the compressor, evaporator, evaporative condenser, chilled water hydraulic module (including chilled water pump, water filter, and makeup water valve), and water treatment system are housed within a modular frame. This compact structure minimizes footprint, requiring customers to connect only chilled water pipes and power supply for efficient operation. The unit employs a modular design, breaking down large components into smaller parts for convenient transportation and on-site hoisting. It enables single-unit operation or networked operation of up to three single-compressor modular units of any size.

Quiet Operation

Semi-hermetic screw compressor features a double-walled shell structure with vibration-damping pads as standard equipment on the base, ensuring smooth and reliable operation with low noise levels. The condenser employs an aluminum alloy axial fan specifically designed for evaporative cooling, featuring forward-curved blades and a streamlined inlet duct. This configuration delivers low air resistance, high airflow, low noise, and high efficiency.

Intelligent Control

1. Smart Control

☆ The unit employs an advanced microcomputer controller, offering precise control, comprehensive functionality, and high automation.

☆Offers multiple operating mode settings to meet diverse user needs;

☆ Multiple automatic protection controls ensure the unit's operational safety;

☆10-inch touchscreen display provides comprehensive monitoring of unit operating parameters. User-friendly interface ensures intuitive operation, enabling true one-touch start/stop functionality.

2. Multi-Unit Group Control System (Optional)

☆Multi-unit group control systems automatically calculate real-time loads for air conditioning systems. Simultaneously, based on performance coupling and energy efficiency calculation models for each device, they automatically select optimal operating plans and control strategies. This intelligently manages compressor, chilled water pump, and evaporative condenser circulation It effectively enhances the real-time operational efficiency of the air conditioning system under variable load conditions, improves water temperature control stability and precision, boosts overall system energy efficiency, and reduces operational energy consumption and costs.

☆Supports network group control for up to 8 evaporative cooling units of the same model equipped with self-contained water-cooling modules;

☆Supports network group control for up to 8 evaporative cooling units of any model and their corresponding chilled water electric valves (optional), along with external water pressure modules.

Technology Advantages

Economic Comparison

Application Project Analysis:

The building area for air conditioning in a certain project is 7,500 m². The cooling load index is 150 W/m². The design cooling load is 1,125 kW. The cooling operation period is 180 days, with 10 hours of operation per day. The unit efficiency is 0.75. Industrial electricity rates are calculated at 1.0 $/kWh.