Common Cooling and Heating Systems

Refrigeration and heating systems are widely used in many fields such as food processing, pharmaceutical manufacturing, scientific research, and daily life. Common refrigeration and heating systems mainly include vapor compression refrigeration, vapor absorption refrigeration, steam injection refrigeration, adsorption refrigeration, thermoelectric refrigeration, magnetic refrigeration and acoustic refrigeration.

1. Vapor compression refrigeration: This is a common refrigeration system. Its working principle is to use a compressor to compress low-temperature and low-pressure refrigerant vapor into high-temperature and high-pressure superheated steam, then release the heat through the condenser, and then throttle it through the expansion valve to become Low-pressure liquid refrigerant evaporates and absorbs heat in the evaporator to achieve refrigeration purposes. According to the different condensers, they can be divided into water-cooled, air-cooled and evaporative condensers.

2. Steam absorption refrigeration: This system uses refrigerant-absorbent as the working fluid. Commonly used working fluid pairs include lithium bromide-water and ammonia-water. The advantages of absorption refrigeration devices are quiet operation, simple maintenance, independence from electricity, and easy capacity control. However, low temperatures cannot be obtained when water is used as the refrigerant.

3. Steam jet refrigeration: The higher-pressure water vapor provided by the boiler is used as working steam. Through adiabatic expansion in the main ejector, steam is extracted from the evaporator to maintain the vacuum state in the evaporator, thereby achieving refrigeration.

4. Adsorption refrigeration: Based on the adsorption of refrigerant gas by the solid adsorbent, the alternating process of adsorption and desorption is achieved by periodically cooling and heating the adsorbent to achieve the refrigeration effect. Adsorption refrigeration can be divided into physical adsorption and chemical adsorption.

5. Thermoelectric refrigeration: also called thermoelectric refrigeration or semiconductor refrigeration, it uses the thermoelectric effect (Peltier effect) to achieve refrigeration. The advantages of thermoelectric refrigeration are no moving parts, no refrigerant, low noise and high reliability.

6. Magnetic refrigeration: Based on the magnetocaloric effect (MCE), refrigeration is achieved by causing temperature changes in the material due to changes in the external magnetic field. The magnetic refrigeration system is environmentally friendly and highly reliable.

7. Acoustic refrigeration: Based on the thermoacoustic effect, heat transportation and refrigeration are achieved through the propagation of sound waves. The acoustic refrigeration system does not require the use of refrigerant and has no moving parts, which has the advantages of environmental protection and long life.

In addition, there are some new refrigeration technologies, such as solar refrigeration, gas-driven refrigeration, waste heat refrigeration, geothermal refrigeration, laser refrigeration, air refrigeration, ice storage air conditioning refrigeration and energy storage air conditioning refrigeration, etc. Each of them has unique advantages and application scenarios.

In the selection and application of heating and cooling temperature control systems, comprehensive considerations need to be made based on factors such as specific application requirements, process flow, reliability, and ease of maintenance. For example, the biomedical high and low temperature integrated machine can provide a temperature control range of -100 to 250°C, which is suitable for rapid exothermic and endothermic chemical reaction experiments.

We provide complete temperature control systems design and manufacturing. From standard models to complete customized products. We specialize in customer service and are dedicated to helping each customer have the optimal temperature control system for their specific need.

We provide non-standard customized solutions. Both single cooling chillers and cooling & heating combo units are available.

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Cooling and Heating Systems (SUNDI series)

(Custom Designs)

• Temperature range: -120℃ ~ +350℃
• High-precision, intelligent temperature control
• Cooling capacity: 0.5kW ~ 1200kW
• Fully closed system to extend the service life of thermal fluid
• Each device is load tested for more than 12 hours

Cooling and Heating Systems (WTD series)

(Custom Designs)

• （Micro channel / tube reactors specialized）
• Temperature range: -70℃ ~ +300℃
• High-performance circulation pump, more stable temperature control effect
• Wide temperature range to meet the needs of more industries
• Each device is load tested for more than 12 hours

Cooling and Heating Circulators

(Custom Designs)

• Temperature range: -45℃ ~ +250℃
• Emerson Copeland compressor, reliable quality
• Self-diagnosis function, multiple safety protection devices
• Fully closed system to extend the service life of thermal fluid
• Each device is load tested for more than 12 hours

Heating Circulators

(Custom Designs)

• Temperature range: +50℃ ~ +300℃
• Large heat exchange area and fast heating speed
• Self-diagnosis function, multiple safety protection devices
• Closed circulation system, no oil mist at high temperatures
• Each device is load tested for more than 12 hours

TES Series (Temperature control for fuel and oil testing)

(Custom Designs)

• Temperature range: -85℃ ~ +250℃
• Siemens PLC controller and other brand accessories
• Self-diagnosis function, multiple safety protection devices
• Fully closed circulation system, no oil mist at high temperatures
• Each device is load tested for more than 12 hours

TCU Multi-reactors Temperature Control System

(Custom Designs)

• Temperature range: -120℃ ~ +250℃
• Sealed, repeatable temperature control
• Built-in electric heating thermal oil auxiliary system
• Add cold and heat source heat exchange modules according to needs
• Each device is load tested for more than 12 hours

Cooling Chillers                                                                                                     

Recirculating Chillers / Refrigerated Circulator

(Custom Designs)

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

Mini Chillers / Small Chillers

(Custom Designs)

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

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.

High Temperature Chillers

(Custom Designs)

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