Tunelgroup | Cold Storage | Cold Room

Screw Condensing Unit

Cold Room Screw Condensing Unit

In the ever-evolving landscape of cold storage and industrial refrigeration, achieving reliable and efficient cooling is essential for maintaining product quality and ensuring operational excellence. Tunel Group’s Cold Room Screw Condensing Units provide an advanced solution tailored to meet the diverse cooling demands of small, medium, and ultra-low high capacity applications. Leveraging high-quality semi-hermetic screw compressors and state-of-the-art engineering, these condensing units deliver exceptional performance, longevity, and energy efficiency, making them the ideal choice for various industrial and commercial cold storage environments.

What Are Cold Room Screw Condensing Units?

Cold Room Screw Condensing Units are sophisticated refrigeration systems designed to provide efficient and reliable cooling by integrating screw compressors, condensers, and evaporators into a single, hermetically sealed unit. Unlike traditional condensing units, screw condensers utilize semi-hermetic screw compressors that offer superior performance and energy efficiency. Tunel Group’s Screw Condensing Units are engineered to cater to low, medium, and ultra-low high capacity cooling needs, ensuring flexibility and scalability for a wide range of cold storage applications.

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Importance of Screw Condensing Units in Cold Storage

Maintaining optimal temperature levels swiftly and consistently is crucial in cold storage environments to preserve product quality, extend shelf life, and ensure operational efficiency. Screw Condensing Units play a vital role in:

  • Preserving Product Quality: Rapid and uniform cooling prevents spoilage, maintains freshness, and ensures the integrity of perishable goods.
  • Enhancing Energy Efficiency: Low energy consumption reduces operational costs, making these units a cost-effective choice for businesses with varying cooling demands.
  • Maximizing Space Utilization: The compact design frees up valuable space, allowing for increased storage capacity and better organization within the cold room.
  • Simplifying Installation and Maintenance: Integrated design and easily accessible components streamline the installation process and facilitate maintenance tasks, minimizing downtime.

Features of Tunel Group’s Cold Room Screw Condensing Units

Tunel Group’s Cold Room Screw Condensing Units are equipped with a range of advanced features designed to deliver superior performance and reliability:

  • Semi-Hermetic Screw Compressors: Utilize high-quality European-origin screw compressors that provide long service life and exceptional cooling performance.
  • Integrated Design: Combines compressor, condenser, and evaporator into a single, hermetically sealed unit for efficient space utilization.
  • Four-Stage Operation: Achieve 25%, 50%, 75%, and 100% operation stages from a single compressor, ensuring high energy savings at intermediate loads.
  • High Thermal Efficiency: Engineered for optimal cooling performance across various capacity ranges, enhancing overall energy efficiency.
  • Durable Construction: Manufactured with galvanized sheet metal and finished with aesthetic electrostatic white paint to prevent rust and ensure longevity. Stainless steel and epoxy-coated models are available upon special request.
  • Adjustable Lamella Spacing: Available with 4mm, 6mm, 8mm, 10mm, and 12mm lamella spacing to ensure high ventilation efficiency and precise temperature control.
  • Homogeneous Temperature Distribution: Integrated fans ensure even distribution of cool air, maintaining a consistent temperature throughout the cold room.
  • Versatile Fluid System Compatibility: Designed to work seamlessly with different refrigeration fluid systems, providing flexibility in installation and operation.
  • Easy Maintenance: Removable side covers and drain pans simplify installation and maintenance processes, minimizing downtime and operational disruptions.
  • Low Noise Level: Features a low noise level compressor compared to traditional units, ensuring a quieter working environment.
  • Intelligent Control System: Equipped with a smart control system that manages operations from startup to running without the need for extensive testing.

Benefits of Tunel Group’s Cold Room Screw Condensing Units

Implementing Tunel Group’s Cold Room Screw Condensing Units offers numerous advantages that enhance both the functionality and efficiency of cold storage facilities:

  • Enhanced Cooling Performance: Reliable and efficient cooling ensures that products remain fresh and safe, reducing spoilage and waste.
  • Energy Savings: High thermal efficiency and optimized ventilation reduce energy consumption, leading to significant cost savings over time.
  • Space Optimization: Compact structure frees up valuable space, allowing for increased storage capacity and better organization.
  • Operational Flexibility: Suitable for a wide range of applications, from small walk-in freezers to large industrial cold rooms, providing versatile cooling solutions.
  • Low Maintenance: Durable materials and easy-access components minimize the need for frequent maintenance, reducing downtime and operational disruptions.
  • Energy Efficiency: Extends defrost intervals and reduces the number of defrosts, saving energy and lowering operating costs.
  • Cost-Effective Operation: Long cooling periods without defrosting contribute to reduced operating costs, making these units an economical choice for businesses.

Centralized Control

EK centralized control system adopts the industry-leading control solution. The product configuration is applicable to the chilled pump control system solution. Multiple persons are allowed to control and monitor the unit on the homepage of a Microsoft-based web browser.


The international general RS485 standard serial communication interface is adopted. Joint connection with other building access systems (BASs) is supported through the communication protocol conversion module (optional) provided by EK to implement group control on multiple units. The standard protocols include BacNet, Modbus, and Lonwork.