Stirling Engine PC CPU Cooler with Fan

Design of liquid nitrogen cooling system
Introduction:
Liquid nitrogen cooling system is a cooling technology commonly used in scientific research, industrial production, and medical fields. It achieves rapid cooling of equipment or samples by injecting liquid nitrogen into the cooling equipment and utilizing the low-temperature characteristics of liquid nitrogen. This article will introduce the design principle, components, and application fields of a liquid nitrogen cooling system.
1、 Design principle:
The design principle of a liquid nitrogen cooling system is based on the low-temperature properties of liquid nitrogen. The boiling point of liquid nitrogen is -196 ℃, so it can quickly absorb the heat of surrounding objects and evaporate rapidly. When liquid nitrogen evaporates, the heat absorbed will cause the temperature of the liquid nitrogen to decrease, thereby achieving a cooling effect on the cooling equipment.
2、 Components:
The liquid nitrogen cooling system mainly consists of the following parts:
1. Liquid nitrogen storage tank: A container for storing liquid nitrogen, usually designed with a double layer vacuum to reduce heat conduction and radiation.
2. Liquid nitrogen pump: used to extract liquid nitrogen from the storage tank and transport it to the cooling equipment. Liquid nitrogen pumps typically use a combination of liquid nitrogen vaporizers and gas booster pumps to provide sufficient pressure and flow.
3. Cooling equipment: Cooling devices designed according to specific application requirements, including cooling chambers, cooling pipelines, coolers, etc. The design of cooling equipment should consider factors such as cooling effectiveness, heat transfer efficiency, and safety.
4. Control system: used to monitor and control the operation of the liquid nitrogen cooling system, including the start and stop control of the liquid nitrogen pump, temperature and pressure monitoring, and alarm system.
3、 Application field:
Liquid nitrogen cooling systems are widely used in various fields, and the following are some common application areas:
1. Scientific research: Liquid nitrogen cooling systems are widely used in scientific research fields such as physics, chemistry, and biology. It can be used for cooling experimental equipment, such as electron microscopes, nuclear magnetic resonance instruments, etc. At the same time, the liquid nitrogen cooling system can also be used for cryopreservation of experimental samples to maintain their original properties.
2. Industrial production: In certain industrial production processes, rapid cooling of certain equipment or products is required to meet specific process requirements. Liquid nitrogen cooling systems can provide fast and uniform cooling effects, making them widely used in fields such as metal processing, plastic molding, semiconductor manufacturing, and so on.
3. Medical field: Liquid nitrogen cooling systems also have important applications in the medical field. For example, a liquid nitrogen cooling system can be used for pathological frozen section techniques during surgery to quickly freeze tissue samples for pathological examination. In addition, liquid nitrogen cooling systems can also be used for low-temperature preservation of biological samples, such as sperm, eggs, and stem cells.
Conclusion:
Liquid nitrogen cooling system is an efficient and fast cooling technology with broad application prospects. Through reasonable design and optimization, the liquid nitrogen cooling system can meet the cooling needs of different fields and improve experimental efficiency and product quality. In future development, liquid nitrogen cooling systems will continue to play an important role in bringing more innovation and progress to scientific research, industrial production, and medical fields.

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