Manufacturing And Heat Transfer Characteristics Of Aluminum Ammonia Axial Grooved Heat Pipe

Axial grooved heat pipe is a heat pipe up on the field of aerospace applications, this micro-channel heat pipe depends on its different axial size and shape to provide a capillary force, it can work under microgravity conditions. More importantly, the manufacturing process of the groove is simple, flexible, and high reliability, these are extremely important in space applications."Ω"-shaped axial grooved heat pipe is representative of the grooved heat pipe, and its unique grooved wick weakened effectively the bad effect of the steam’s reversal flow. It can reduce the thermal resistance, improving its heat transfer performance. It exhibit superior thermal conductivity and temperature characteristics, and it has broad prospects for development in the field of aerospace thermal control systems, microelectronics cooling components.This paper studied and mastered the manufacturing process of the heat pipe. According to the study and improvement of the aluminum-ammonia heat pipe’s manufacture, we summed up a more complete design project. It includes the step of cleaning, the size of the tip and the filling system, improving of the welding rate, the manufacturing experience are also accumulated.Through the analysis of its works, we built heat transfer model,and obtained the thermal resistance of each process.We also got the performance factors which can impact heat exchanger. We experiment on the different lengths and fluid-filled rate pipe with different heating power, cooling intensity and working inclination, then analyse its total thermal resistance, heat transfer coefficient of the evaporator section and condensing segment, equivalent thermal conductivity. These can provide a reference for the future use of this heat pipe in various fields.