Water cooled packaged chiller - BS Series(7℃)-08WS

BS Series Water cooled packaged chiller

 

The low-temperature and low-pressure refrigerant gas is compressed into high-temperature and high-pressure gas by the compressor, which then enters the shell-and-tube condenser. The cooling water (a matching cooling tower is required) dissipates the heat, converting the gas into a liquid state. After being depressurized by the expansion valve, the liquid refrigerant enters the evaporator, where it absorbs heat from the water in the water tank to lower the water temperature. The refrigerant that has absorbed heat is recycled back to the compressor, forming a closed loop.

Water cooled  packaged chiller Working Principle

Refrigeration Cycle

The low-temperature and low-pressure refrigerant gas is compressed into high-temperature and high-pressure gas by the compressor, which then enters the shell-and-tube condenser. The cooling water (a matching cooling tower is required) takes away the heat, converting the gas into a liquid state. After being depressurized by the expansion valve, the liquid refrigerant enters the evaporator, where it absorbs the heat of the water in the water tank to lower the water temperature. The refrigerant that has absorbed heat is recycled back to the compressor, forming a closed loop.

 

Core Components

• Compressor: Scroll-type or screw-type compressors are commonly used, which provide power to drive the refrigeration cycle.
• Shell-and-Tube Condenser/Evaporator: They achieve efficient heat exchange and ensure rapid heat transfer.
• Stainless Steel Water Tank: Equipped with a built-in automatic water replenishment device, it stores and circulates cooling water.
• Intelligent Control System: It is equipped with a temperature controller (with an accuracy of ±0.5℃), overload protection, phase sequence protection, etc., to ensure safe operation.

 

Key Terminology Explanation (for Clarity)

• Shell-and-Tube: A standard industrial term describing the structure of heat exchangers (condenser/evaporator), where one fluid flows through tubes and the other around the tubes (in the shell), ensuring efficient heat transfer.
• Phase Sequence Protection: A safety function that prevents equipment damage caused by incorrect three-phase power supply sequence (common in industrial-grade compressors and pumps).

 

Safety Protection Function

Precise Temperature Control: The temperature fluctuation range can usually be controlled within ±0.5°C to ±1°C, meeting the requirements of high-precision processes.

High Thermal Efficiency: Water has a higher thermal conductivity than heat-conducting oil, enabling faster heat transfer and shortening the equipment's heating-up time.

Safety and Environmental Friendliness: Compared with oil temperature machines, water (as a medium) has no ignition point and no peculiar smell. In case of leakage, it causes less pollution to the environment and equipment.

 

Q1:What is the working principle of the water chiller?

A1: The 7°C water-cooled box-type water chiller reduces the water temperature through a refrigeration system. Its working principle is to use the refrigerant to evaporate and absorb heat in the evaporator, which takes away the heat of the chilled water and lowers the water temperature to approximately 7°C. The vapor formed after the refrigerant evaporates is sucked in and compressed by the compressor, increasing its pressure and temperature. Then, it enters the condenser. In the condenser, the high-temperature and high-pressure refrigerant vapor transfers heat to the cooling water, cools down and condenses into a liquid. Finally, the liquid refrigerant is throttled and depressurized through the expansion valve, and re-enters the evaporator to evaporate and absorb heat. This cycle repeats to achieve continuous refrigeration.

Q2: What are the main components of the water chiller?

A2: The main components include the compressor, condenser, evaporator, expansion valve, water pump, water tank, and control system, etc.

• The compressor is the core of the refrigeration system and is used to compress and transport the refrigerant.
• The condenser is used to cool and condense the high-temperature and high-pressure refrigerant vapor into a liquid.
• The evaporator is used to realize heat exchange between the refrigerant and the chilled water.
• The expansion valve is used for throttling and depressurizing the refrigerant.
• The water pump is used to drive the circulation of chilled water and cooling water.
• The water tank is used to store chilled water.
• The control system is used to monitor and control the operating status of the water chiller.

Model And Technical Parameter

Note: The specification is subject to change due to product improvement without prior notice.

Process Flow Diagram

Application Case

Our oil temperature control unit 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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