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Closed Loop Glycol Cooling System

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Closed Loop Glycol Cooling System

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The closed loop glycol cooling system is a chiller that uses ethylene glycol as the secondary refrigerant of the chiller. Sometimes the cooling liquid needs to be below 0℃. If it is cooled with water, it will freeze. Adding antifreeze liquid can avoid freezing, and ethylene glycol can prevent freezing.

Working principle of closed loop glycol cooling system:

Install a plate heat exchanger outdoors, and a fan will introduce the outdoor cold air into the plate heat exchanger. The ethylene glycol solution and the outdoor cold air will exchange heat in the plate heat exchanger. The cooled ethylene glycol solution enters the air conditioning unit in the inner area, where it exchanges heat with the mixed air. The mixed air is cooled, and after the temperature drops, it enters the inner room to provide cooling to the inner room. The temperature of the ethylene glycol solution rises and returns to the outdoor plate heat exchanger again to exchange heat with the cold outdoor air. After the temperature drops, the cycle continues. This type of heat exchange is often used in heat recovery systems. Ethylene glycol exchanges heat with high-temperature exhaust air. After the temperature rises, it enters the fresh air cabinet to preheat the fresh air. Thus, the heat in the exhaust air is recovered to heat the fresh air, saving electric energy and operating costs.

This method of using ethylene glycol solution as a secondary refrigerant to introduce the cold energy in the outdoor cold air to provide cooling to the inner area is a very energy-saving air conditioning method. Just install a plate heat exchanger outdoors. During operation, the chiller is turned off and only the fan and air conditioning unit are turned on to introduce natural cold sources to provide cooling to the inner area, saving electricity and reducing operating costs. However, in the process of using outdoor cooling to provide cooling to the inner area, the cold air needs to exchange heat with ethylene glycol, and then the ethylene glycol needs to exchange heat with the mixed air. After two heat exchanges, the cooling capacity loss is large. , the heat transfer efficiency is not high, generally less than 60%.

 

Closed Loop Glycol Cooling System

 

Advantages of closed loop glycol cooling system

1. Environmental friendliness

As a natural organic compound, ethylene glycol is environmentally friendly and renewable. Compared with traditional refrigerants, ethylene glycol does not cause damage to the atmosphere and does not produce a greenhouse effect on the earth, so it plays a positive role in reducing global warming and protecting the environment.

2. Security

As a non-toxic, odorless and non-irritating compound, ethylene glycol has high safety. In contrast, traditional refrigerants such as ammonia and Freon are highly toxic and corrosive, and there are potential safety risks during use. The use of ethylene glycol refrigerant refrigeration system can reduce these risks and ensure the safety of personnel.

3. High energy efficiency

Ethylene glycol secondary refrigerant refrigeration system has high energy efficiency. Ethylene glycol has a low vaporization temperature and high heat absorption capacity, and can quickly absorb heat during the refrigeration process and achieve a refrigeration effect. In comparison, traditional refrigerants have poor heat conduction capabilities, and the refrigeration process takes longer and consumes more energy.

 


 

We provide complete temperature control systems design and manufacturing. From standard models to complete customized products up to 900 tons. 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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Email: info@lneya.com    WeChat ID: +8615251628237    WhatsApp: +86 17851209193

 


 

Cooling Chillers                                                                                                     

 

recirculating chiller

Recirculating Chillers / Refrigerated Circulator

(Custom Designs)

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

 

 

Temperature range  -25°C ~ +30°C series  -45°C ~ +30°C series  -60°C ~ -20°C series  -80°C ~ -20°C series  -120°C ~ -70°C series
Cooling Capacity 0.8 ~ 30kW 0.75 ~ 12kW 0.4 ~ 6kW 0.2 ~ 6kW 0.3 ~ 5kW
Note: Any temperature range from -150℃ ~ +350℃ and any cooling capacity can be customized

 


 

Precision Chillers / Small ChillersWater Chillers / Small Chillers

(Custom Designs)

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

 

 

Temperature range  -18°C ~ +30°C  +5°C ~ +35°C series
Cooling Capacity 0.35 ~ 0.9kW 1.8 ~ 50kW
Note: Any temperature range from -150℃ ~ +350℃ and any cooling capacity can be customized

 


 

low temperature chiller

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.

 

 

Temperature range  -25°C ~ -5°C series  -45°C ~ -10°C series  -60°C ~ -10°C series  -80°C ~ -30°C series -110°C ~ -50°C series  -150°C ~ -110°C series
Cooling Capacity 12 ~ 360kW 6 ~ 180kW 6 ~ 180kW 4 ~ 180kW 2 ~ 120kW 2.5 ~ 11kW
Note: Any temperature range from -150℃ ~ +350℃ and any cooling capacity can be customized

 


SEMICONDUCTOR CHILLER

 

High Temperature Chillers

(Custom Designs)

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

 

 

Temperature range  +5°C ~ +40°C  -25°C ~ +40°C  -45°C ~ +40°C  -80°C ~ +80°C  -100°C ~ +80°C
Cooling Capacity 6 ~ 40kW 2 ~ 15kW 1 ~ 8kW 0.6 ~ 3kW 1.5 ~ 3kW
Note: Any temperature range from -150℃ ~ +350℃ and any cooling capacity can be customized

 

 

Cooling and Heating Chillers                                                                            

 

1

Cooling and Heating Chillers

(Custom Designs)

Temperature Control Range: -120°C to +350°C

cooling and heating thermostat, widely used in various industry.

 

Temperature range  -10 ~ +150°C series  -25 ~ +200°C series  -25 ~ +300°C series  -45 ~ +250°C series  -45 ~ +300°C series  -60 ~ +250°C series  -60 ~ +300°C series  -70 ~ +250°C series  -80 ~ +250°C series -90 ~ +250°C series  -100 ~ +100°C series
Cooling Capacity 1.5 ~ 15kW 1 ~ 200kW 1 ~ 200kW 0.45 ~ 200kW 0.9 ~ 25kW 0.25 ~ 60kW 0.75 ~ 25kW 0.4 ~ 15kW 0.3 ~ 80kW 0.2 ~ 80kW 0.45 ~ 80kW
Note: Any temperature range from -150℃ ~ +350℃ and any cooling capacity can be customized

 


 

低温循环器

Recirculating Heater Chillers

(Custom Designs)

Temperature Control Range: -45°C to +250°C

 

Temperature range  -25°C ~ +200°C series  -45°C ~ +250°C series
Cooling Capacity 1 ~ 15kW 0.25 ~ 15kW
Note: Any temperature range from -150℃ ~ +350℃ and any cooling capacity can be customized

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