LNEYA Thermo Refrigeration Co.,Ltd.
Recirculating Chillers
Temperature control range is from -45℃ to +20℃ (optional: -150℃ ~ +350℃).
Temperature control accuracy is ±0.5℃.
Recirculating Chillers Overview
A recirculating chiller is a closed-loop cooling system that provides precise temperature control by continuously circulating a cooled liquid—typically water or a water-glycol mixture—through equipment or processes that generate heat. After absorbing heat, the fluid returns to the chiller, where it is cooled and then recirculated.
Unlike simple coolers or water baths, recirculating chillers are designed for applications that demand stable, accurate, and energy-efficient cooling.
Recirculating Chillers Characteristics
- Closed-loop cooling system: Recirculating chillers utilize a closed-loop cooling system. This system continuously circulates a refrigerant to maintain precise thermal regulation. This design eliminates the need for constant water supply, making them more environmentally friendly and cost-effective compared to traditional cooling methods. Their compact and modular construction allows for flexible installation in various industrial and laboratory settings, saving valuable space while ensuring efficient operation.
- Exceptional temperature stability: Recirculating chillers can maintain set points within ±0.1°C or better. This is critical for sensitive applications in semiconductor manufacturing and pharmaceutical processes. Advanced models feature programmable controllers and touch-screen interfaces. You can easily adjust parameters and monitor system performance in real time.
- Reuse of the same coolant: Energy efficiency stands out as another major advantage, as recirculating chillers reuse the same coolant rather than consuming large volumes of water like once-through cooling systems. Modern recirculating chillers incorporate variable-speed compressors and energy-saving pumps that automatically adjust output based on cooling demand, significantly reducing power consumption. Recirculating chillers also integrate heat recovery options, re-purposing waste heat for other processes to further enhance overall energy utilization and sustainability.
Customized Solutions
We have more than 30 years of design and manufacturing experience in the field of temperature control, supporting a full range of customized designs, from small mini machines to industrial large equipment.
Email: lilia@lneya.com
Phone / WhatsApp / WeChat: +86-18906195231
Recirculating Chillers Specification
| Model | LTZ4-6 | LTZ4-10 | LTZ4-15 | LTZ4-20W | LTZ4-30W | LTZ4-40W | LTZ4-80W | |
| LTZ4-6W | LTZ4-10W | LTZ4-15W | ||||||
| Temperature range | -45℃ ～ +20℃ | |||||||
| Temperature control | PLC controller, control outlet temperature, 7-inch touch screen | |||||||
| Temperature control accuracy | ±0.5℃ | |||||||
| Temperature feedback | PT100 | |||||||
| Cooling capacity (kW) | -20℃ | 5.7 | 9.9 | 14.8 | 18.5 | 28.1 | 32.4 | 61.56 |
| -35℃ | 2.85 | 5.03 | 7.7 | 10.8 | 14.5 | 17.4 | 31.1 | |
| Circulation pump MAX | 1.5m³/h | 2.4m³/h | 3.5m³/h | 4.5m³/h | 6.8m³/h | 7.7m³/h | 15m³/h | |
| 2bar | 2bar | 2bar | 2bar | 2bar | 2bar | 2bar | ||
| Compressor | Famous brand compressor | |||||||
| Evaporator | Plate Heat Exchanger | |||||||
| Operation panel | 7-inch color touch screen displays set temperature and measured temperature, records temperature curve, and exports data in Excel format | |||||||
| Safety protection | It has self-diagnosis function; refrigerator overload protection; high and low pressure sensors, overload relays, thermal protection devices and other safety protection functions. | |||||||
| Refrigerant | R404A | |||||||
| Interface size | DN15 | DN20 | DN25 | DN25 | DN32 | DN40 | DN50 | |
| Power supply | 400V 50HZ / 460V 60HZ | |||||||
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Email: lilia@lneya.com
Phone / WhatsApp / WeChat: +86-18906195231
Recirculating Chillers Advantages
- Versatile in diverse applications: Recirculating chillers can serve diverse applications across multiple industries, from cooling high-power lasers in material processing to maintaining optimal temperatures in medical imaging equipment. Recirculating chillers can accommodate various coolants including water, water-glycol mixtures, or specialized fluids to meet different temperature range requirements. This adaptability makes them suitable for both extreme low-temperature applications and high-heat dissipation scenarios.
- Significantly less water consumption than cooling towers: Recirculating chillers offer significant long-term economic benefits through reduced water consumption, lower energy costs, and decreased maintenance compared to traditional cooling towers. Recirculating chillers continue to evolve with smarter controls and more efficient designs, solidifying their position as essential thermal management solutions in modern manufacturing and research facilities.
- Safety features represent another important characteristic, with built-in protections against overheating, low fluid levels, and power failures. Recirculating chillers include alarm systems and automatic shutdown functions to prevent equipment damage in case of malfunctions. The closed-loop design also minimizes contamination risks in cleanroom environments and prevents coolant evaporation, maintaining system performance while reducing maintenance requirements.
Recirculating Chillers Importance
Recirculating chillers play a critical role in industries and laboratories by providing efficient, precise, and reliable temperature control for various applications. These closed-loop cooling systems continuously circulate a coolant to remove excess heat from equipment, ensuring optimal performance and preventing overheating. One of their key advantages is energy efficiency—since recirculating chillers reuse the same coolant, they minimize water waste and reduce operational costs compared to traditional cooling methods. They also offer temperature stability, which is essential for sensitive processes in medical, pharmaceutical, and semiconductor industries, where even minor fluctuations can compromise results.
Additionally, recirculating chillers enhance equipment longevity by maintaining consistent cooling, preventing thermal stress on machinery such as lasers, MRI machines, and reactors. Their compact and portable design allows for flexible installation in labs and manufacturing facilities.
Recirculating Chillers Applications
- Semiconductor: In wafer fabrication, recirculating chillers cool lithography machines and etching equipment to maintain nanometer-level accuracy by preventing thermal distortion. For testing procedures, recirculating chillers stabilize the temperature of probe stations and analytical instruments, ensuring reliable measurement results. They also play a vital role in chip packaging by controlling the temperature during soldering and encapsulation, which directly impacts product yield and longevity.
- Pharmaceutical and chemical industry: In pharmaceutical production, recirculating chillers provide essential cooling for reactors during drug synthesis, maintaining strict temperature parameters for consistent product quality. They are integrated into crystallization processes to control cooling rates, directly affecting crystal size and purity.
- For biotechnology applications, recirculating chillers precisely regulate temperatures in PCR machines and bioreactors, ensuring optimal conditions for DNA amplification and cell culture. The closed-loop design prevents contamination while meeting stringent GMP requirements for sterile manufacturing environments.
- New energy: The new energy industry relies on recirculating chillers for efficient thermal management in battery production and operation.
- During lithium-ion battery manufacturing, recirculating chillers control temperatures during electrode coating and formation processes to enhance battery performance. For electric vehicles, recirculating chillers maintain optimal battery pack temperatures during both operation and fast charging, significantly extending battery life and preventing thermal runaway. In hydrogen fuel cell systems, recirculating chillers effectively cool the stack to improve energy conversion efficiency and system durability.
Why Choose Us?
LNEYA always adheres to high standards of quality management. We have passed ISO9001 quality management system, CE, UL and many other international certifications. LNEYA products comply with RoHS environmental protection directives and ASME pressure vessel standards, and some models have obtained explosion-proof certification (ATEX). Quality management runs through the entire process of R&D, production and service to ensure the performance and safety of each equipment. LNEYA also regularly audits and evaluates suppliers to ensure product quality from the source. These strict certification and control measures enable our products to enter the European and American markets with extremely high quality requirements and gain wide recognition.
Your Premium Recirculating Chillers Manufacturer
We have agents in many countries around the world,
such as: United States, Russia, Australia, France, Netherlands, Sweden, Israel,
Czech Republic, Malaysia, Singapore, Indonesia, Thailand, South Korea, India, etc.
PRODUCTION PROCESS
Contact Us Now
We are happy to provide you with a free temperature control solution
Email: lilia@lneya.com
Phone / WhatsApp / WeChat: +86-18906195231
FAQ
Regularly check fluid levels and top up if needed. Clean filters to prevent clogging. Inspect for leaks in hoses/pumps. Replace coolant periodically to prevents algae/bacterial growth. Descale if using hard water.
It is not recommended to use tap water for a long time. Minerals can cause scaling and corrosion. Use distilled, deionized, or treated water.
Yes, if you want your recirculating chiller to be designed for 24/7 operation, please check our specs. Industrial-grade chillers handle continuous use better than lab models.
