Air Cooled Screw Water Chiller Industrial Refrigeration Equipment for Machinery- BSL Series -230ASEM

BSL Series Air cooled screw chiller

 

Its core working unit consists of four parts, which work together to realize the refrigeration cycle.

Screw Compressor: Known as the "heart" of the equipment, it compresses the refrigerant through the meshing of twin screws to provide continuous and stable refrigeration power. It features high efficiency, low noise, and a long service life.

Air-Cooled Condenser: It dissipates the heat carried by the refrigerant into the air through forced ventilation via fans. It does not require a cooling tower, which simplifies the installation conditions.

Evaporator: It conducts heat exchange with the water to be cooled (refrigerant carrier), lowers the water temperature to -5℃, and then delivers the chilled water to the equipment that needs cooling.

Control System: Adopting PLC (Programmable Logic Controller) or microcomputer control, it can accurately adjust the outlet water temperature, monitor the equipment operation status, and realize automatic start-stop and fault alarm functions.

Air cooled  Screw chiller Working Principle

1. Main Components

 

Semi-hermetic twin-screw compressor, high-efficiency V-type fin air-cooled condenser, shell & tube evaporator, electronic expansion valve, oil-gas separator, PLC intelligent control system, variable-frequency cooling fans & multi-protection safety devices.

 

2. Working Principle

 

1. Low-temperature refrigerant absorbs heat from process circulating water in evaporator, stably outputting chilled water at 5~12℃.
2. Gaseous refrigerant is compressed into high-temperature & high-pressure gas by screw compressor.
3. Axial fans force air convection in air-cooled condenser to release heat, refrigerant liquefies.
4. Refrigerant depressurizes and cools via expansion valve, returns to evaporator for continuous refrigeration cycle.

 

3. Key Advantages

 

• No cooling tower & cooling water system, low initial investment, suitable for water-shortage areas.
• Continuous screw compression, low vibration, low noise, less wear and long service life.
• Stepless capacity modulation (10%~100%), excellent part-load energy efficiency and power saving.
• High temperature control accuracy: ±0.5~±1℃, compatible with glycol low-temperature operation (-25℃~35℃).
• Anti-corrosion fin condenser, multi-protection functions, stable 24h continuous operation.
• No special machine room required, compact layout, easy outdoor installation and maintenance.

 

4. Standard Parameters

 

• Cooling capacity: 105~2000kW (30~600RT)
• Chilled water temp: 5~35℃, low temp: -8~-25℃
• Environment-friendly refrigerants: R134a, R407C
• Ambient operating temp: -35℃~+40℃

 

5. Application Fields

 

Plastic injection, electroplating, chemical engineering, pharmaceutical industry, mold cooling, food processing, data center constant temperature, commercial central air conditioning, new energy lithium battery process cooling.

 

Safety Protection Function

Key Components

Twin-screw compressor, equipped with high-efficiency heat exchangers (evaporator, condenser).

Control System

PLC intelligent control, supporting temperature setting, operation monitoring, and fault alarm functions.

Auxiliary Components

Dry filter, expansion valve, oil separator, etc., which ensure the stable operation of the system.

 

Q1: What is the working principle of the -5℃ air-cooled screw chiller?

A1: The working principle of the air-cooled screw chiller is as follows: The gaseous refrigerant discharged from the evaporator is adiabatically compressed by the compressor into a high-temperature and high-pressure state. It then enters the condenser, where it is cooled and condensed into a liquid refrigerant at constant pressure. After that, the liquid refrigerant passes through the throttle valve, expands to a low-pressure state, and becomes a gas-liquid mixture. The low-temperature and low-pressure liquid refrigerant absorbs heat from the substance to be cooled in the evaporator, turns back into gaseous refrigerant, and then re-enters the compressor through the pipeline to start a new cycle.

Q2: What applications is this chiller suitable for?

A2:A: It is widely used in scenarios requiring large-scale refrigeration, covering both civil and industrial fields.

• Civil applications: Commercial buildings, entertainment centers, hotels, hospitals, cinemas/theaters, stadiums, large shopping malls, etc.
• Industrial applications: Plastics and rubber industry, pharmaceutical industry, textile industry, chemical industry, food industry, electronics industry, etc.

Q3: Can the unit run stably under high ambient temperature?

A3: With optimized air-cooled condensing heat dissipation structure, it can operate stably at ambient temperature from -10℃ to 35℃. No heat dissipation attenuation in high-temperature plants, ensuring uninterrupted 7℃ constant temperature output.

Q4: What are the characteristics of the -5℃ air-cooled screw chiller?

A4: It usually has the following characteristics:

• Energy efficiency and environmental protection: Some units can produce hot water using waste heat generated during refrigeration, requiring no additional energy consumption and producing no emissions.
• Safety and reliability: It can replace heating devices with potential safety hazards, such as boilers and electric heaters.
• Cost savings: Waste heat recovery reduces the cost of hot water production.
• Low operating costs: It improves unit efficiency and optimizes working conditions.
• Full automatic microcomputer control: No manual monitoring is needed; remote or centralized management can be realized, saving management costs.

Model And Technical Parameter

Remarks：

1.The table cooling conditions:chilled water inlet temperature 12℃,the outlet temperature 7℃,air temperature 35℃；

2.Power Supoly:3P-380V-50Hz,allowing voltage fluctuation ±10%,Allow the voltage difference ±2%；

3.The above data refer to refrigerant R22,if you need refrigerant R407 or other refrigerants,please contract;

4.Specification parameters and dimensions are subject to change due to product improvement without notice.

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Process Flow Diagram

Application Case

Our air cooled screw is widely used across various industrial applications, including casting moulds, rubber vulcanization, wheel temperature control, hot press technology, carbon fiber production, and chemical reactions. It ensures precise temperature management, improving production efficiency and product quality in these processes.

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