Heat transfer efficiency of Loop Thermosyphon
Release time：
2025-06-25 16:00
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As an efficient heat transfer device, the heat transfer efficiency of Loop Thermosyphon has attracted much attention.
In principle, Loop Thermosyphon mainly relies on gravity and phase change of fluid to achieve heat transfer. During operation, the working fluid in the evaporator is heated and evaporates, and after becoming gaseous, it rises to the condenser under the action of pressure difference. In the condenser, the gaseous working fluid releases heat and re-liquefies, and then flows back to the evaporator under the action of gravity, and so on. This mechanism based on natural circulation enables heat to be transferred without an external power source (such as a pump).
Its heat transfer efficiency is affected by many factors. The first is the nature of the working fluid. Different working fluids have different latent heat of vaporization, density, viscosity and other characteristics. For example, water, as a common working fluid, has a large latent heat of vaporization, which means that it can absorb and release a large amount of heat during the phase change process, which helps to improve the heat transfer efficiency. Secondly, the structural design of the evaporator and condenser is crucial. A reasonable structure can increase the heat exchange area and enhance the heat exchange between the working fluid and the heat source and cold source. For example, the evaporator and condenser with fin structure can effectively increase the contact area between the fluid and the wall, thereby improving the heat transfer efficiency.
In addition, the operating temperature and pressure range will also affect the heat transfer efficiency of Loop Thermosyphon. At the right temperature and pressure, the working fluid can quickly undergo phase change to ensure the rapid transfer of heat. If the temperature or pressure deviates from the optimal range, the phase change process may be blocked, thereby reducing the heat transfer efficiency.
In practical applications, Loop Thermosyphon has demonstrated high heat transfer efficiency in the fields of solar water heaters and electronic equipment heat dissipation. With the continuous deepening of its research, the heat transfer efficiency of Loop Thermosyphon is expected to be further improved by optimizing the selection of working fluids, structural design, and control of operating parameters, thus playing an important role in more thermal management fields.
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