Chiller Refrigerant Cycle

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Refrigerant principle

Refrigerant is the working medium in industrial chillers, also called working fluid or refrigerant. In the chiller refrigeration cycle, the refrigerant continuously exchanges energy with the outside world through the continuous change and flow of its own thermal state, completing heat transfer and achieving the purpose of refrigeration.

Refrigerant properties and performance

Refrigerant is a chemical product, and its properties include the following:

1. Thermodynamic properties: critical parameters, latent heat of vaporization, enthalpy, entropy, pressure, temperature, specific volume, etc.

2. Environmental impact indicators: Ozone depletion potential (ODP), Global Warming Potential (GWP), and atmospheric lifetime index.

3. Physical and chemical properties: electrical insulation, thermal conductivity, viscosity, surface tension, corrosiveness, water solubility, oil solubility, and hydrolyzability.

4. Safety: toxicity, flammability and explosiveness, etc.

The chiller refrigerant cycle mainly passes through three systems: refrigerant circulation system, water circulation system and electrical automatic control system.

1. Refrigerant circulation system

There is liquid refrigerant in the evaporator of an industrial chiller. The refrigerant begins to evaporate after absorbing heat from the water. Finally, there will be a temperature difference between the water and the refrigerant. After the liquid refrigerator is completely evaporated, It turns into a gaseous state, is absorbed by the compressor and then compressed. The gaseous refrigerant then dissipates heat through the condenser. The temperature drops and then turns into a liquid, finally completing the refrigeration cycle.

2. Water circulation system

The main function of the water pump is to pump water from the water tank to the equipment that needs to be cooled. After the water takes away the heat, the temperature will rise, and then returns to the frozen water tank.

3. Electrical automatic control system

Including the automatic control part and power supply part of the industrial chiller system. The automatic control part includes relays, pressure protection, thermostat, pressure protection, thermostat, delayer, overload protection, etc., which together can automatically adjust start or stop according to the water temperature. After the power supply part passes through the contactor, it mainly supplies power to the compressor, water pump and fan light.

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Precision Chillers / Small Chillers

(Custom Designs)

The chiller can be widely used in various industries and laboratories, and supports customized design.

Recirculating Chillers

(Custom Designs)

Our recirculating chiller adopts low-temperature refrigeration technology, the temperature is as low as -120℃, and various accessories are customizable.

Low Temperature Chillers

(Custom Designs)

We specialize in the production of low-temperature chillers with a temperature control range as low as -150°C, which can meet the refrigeration needs of different industries.

Chillers for Automotive Test

(Custom Designs)

Temperature simulation for vehicle quality test: battery life test, fuel injector/motor test bench, airbag test, component test bench, etc.

Chillers for Semiconductor

(Custom Designs)

Suitable for precise temperature control of electronic components. In the manufacture of semiconductor electronic components for harsh environments, the IC packaging assembly and engineering and production testing phases include electronic thermal testing and other environmental testing simulations.

Liquid Cooling For Battery Energy Storage Systems

(Custom Designs)

ZLFQ Series

(Custom Designs)

Coolant Distribution Unit

Liquid cooling equipment is suitable for semiconductor testing, electronic equipment constant temperature testing, cooling server supporting infrastructure, and other fluid temperature control places.

MD Thermal Chucks Series

(Custom Designs)

It is used for testing RF devices and high-density power devices (IGBTs and MOSFETs), and can also be used for rapid cooling of laboratory flat panels (plasma, biological products, batteries), etc.

Screw Chillers (Custom Designs)

Low temperature screw chillers and room temperature screw chillers