Heat pipe heat exchanger is a device that uses heat pipes as heat transfer media for heat exchange. A heat pipe is a device that uses the evaporation and condensation process of liquid working fluid to transfer heat, consisting of a suction capillary, an evaporation section, a condensation section, and a liquid return pipe.

The working principle of a heat pipe heat exchanger is to use the liquid working fluid inside the heat pipe to absorb heat in the evaporation section and turn it into steam, which is then transmitted to the condensation section through the heat pipe wall. The working fluid in the condensation section becomes liquid after releasing heat, and finally flows back to the evaporation section through the liquid return pipe to complete the cycle. During this process, heat is transferred from the heat source end to the cooling end, achieving the purpose of heat exchange.

Heat pipe heat exchangers have the following advantages:

1. Efficient heat transfer: Due to the phase change process inside the heat pipe, the heat transfer efficiency is high.

2. Simple structure: The heat pipe heat exchanger has a simple structure and does not require external power drive.

3. High reliability: Due to the absence of moving parts, it has high reliability and low maintenance costs.

4. Small size: Compared to traditional heat exchangers, heat pipe heat exchangers are compact and suitable for situations with limited space.

Heat pipe heat exchangers are widely used in aerospace, military, industrial production, and civilian fields, such as thermal control systems for aerospace, heat recovery for industrial furnaces, and heat dissipation for electronic equipment.