Screw condensing unit

Screw condensing units are high-performance industrial refrigeration systems tailored for large-scale ultra-low temperature cooling and blast freezing. Equipped with high-quality screw compressors and robust structural parts, they feature stable operation and energy efficiency.


● Compressor Type: Screw Type
● Compressor Brand: Copeland, Panasonic, Bitzer, Emerson, etc
● Refrigerant: R404A
● Voltage: 380V/50Hz (Customized)
● Temperature Range: -30℃ ~ 60℃


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Product Overview

This series features reliable screw-type compressors suitable for ultra-low-temperature environments, ideal for rapid blast freezing. The units combine high-efficiency condensers, intelligent control systems, and full-set safety protection to ensure consistent performance, low energy consumption, and long service life under heavy-duty working conditions.



  • Strong cooling capacity for large-scale and ultra-low-temperature projects

  • High energy efficiency reduces operating costs

  • Rugged structure for long service life

  • Easy installation and low maintenance

  • Certified quality for global market access


To provide an accurate solution and quotation, the following information is required:

  • Required cooling capacity and working temperature

  • Application: blast freezer, cold storage, or industrial cooling

  • Local voltage, frequency, and power supply

  • Installation environment (indoor / outdoor)

  • Preference for compressor brand

  • Special requirements for control or monitoring


Specifications
ModelCHXSDJ50DFCHXSDJ75DFCHXSDJ100DF
CompressorModelSDL-220ESDL-330ESDL-450E
Single unit displacement at 50Hz/60Hz (m³/h) Air displacement233/280339/407460/552
Number of compressors111
Capacity control50%~100%
Refrigeratingcapacity andpowerEvaporation at -60℃Cooling capacity (kW)25.5937.2350.52
Power (kW)28.8241.9356.89
Evaporation at -50℃Cooling capacity (kW)42.7462.1884.37
Power (kW)34.4550.1268.01
Evaporation at -40℃Cooling capacity (kW)67.0397.52132.33
Power (kW)42.3961.6783.69
Evaporation at -35℃Cooling capacity (kW)82.36119.83162.6
Power (kW)47.1968.6393.13
Evaporation at -30℃Cooling capacity (kW)100.09145.63197.61
Power (kW)52.5376.43103.71
Applicable temperature (℃)-30℃ ~ 60℃
RefrigerantR404A
Power Supply380V/50Hz/3Phase
Maximum operating current (A)72.8107.9150.6
Electric control systemPLC HMI
Unit installation parametersLiquid supply pipe diameter (mm)424254
Return pipe diameter (mm)7689108
Refrigerant outlet (mm)767676
Inlet pipe diameter (mm)425757
Unit size (mm)2400 * 1800 * 21002600 * 1800 * 23002600 * 1800 * 2300
CondenserFormHigh efficiency and energy saving evaporation type
Fan power (KW)343
Pump power (KW)1.11.51.5
Air inlet (mm)DN80DN80 * 2DN80 * 2
Liquid outlet (mm)DN50DN65 * 2DN65 * 2
Overall dimension (mm)1900 * 2500 * 30801900 * 2670 * 34801900 * 2670 * 3530


Application Scenarios
Cold Storage

Cold Storage

High-efficiency condensing unit with stable cooling capacity, fast temperature drop and low energy consumption. Perfectly matches all kinds of fresh-keeping, freezing and constant-temperature cold storage, maintaining long-term stable operation and reliable storage effect.

Medical Storage

Medical pharmaceutical storage

Precise temperature control, stable operation and high safety performance. Fully meets strict constant temperature storage requirements for vaccines, reagents and biological samples, with reliable performance to support pharmaceutical cold chain standards.

Workshop Cooling

Workshop Cooling

Energy-saving and high-efficiency, strong heat dissipation performance, adaptable to harsh industrial environments. Effectively realizes workshop cooling, process temperature control and clean room constant temperature, stable and durable for long-time continuous operation.

Logistics Cold Chain

Logistics Cold Chain

Compact structure, easy installation and wide adaptability. Suitable for logistics transfer warehouses, mobile cold storage and container cold chain, featuring fast refrigeration, low failure rate and stable all-weather cold chain guarantee.


FAQ
Q: What applications is the screw condensing unit suitable for?
A: It is widely used in large cold storage, food processing factories, quick-freezing workshops, logistics cold chain warehouses, chemical refrigeration and industrial constant temperature projects, especially for heavy-duty and long-time continuous operation scenarios.
Q: Does the unit support customized voltage and refrigerant?
A: Yes. We can customize voltage and match mainstream refrigerants according to customer’s local standard and project demand.
Q: Is installation and commissioning complicated?
A: The unit is integrated and pre-assembled, with reserved interface for easy on-site connection. We provide detailed installation manual and technical guidance for commissioning.
Q: What regular maintenance does the unit need?
A: Regular cleaning of condenser dust, checking refrigerant leakage, lubricating oil inspection and electrical circuit troubleshooting. Simple daily maintenance can greatly extend equipment life.
Q: What after-sales support can you provide?
A: We provide professional technical consultation, installation guidance, spare parts supply and long-term after-sales maintenance service.

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