Optimizing the experimental study of gravity heat pipes based on response surface design

The study employed the response surface methodology to experimentally optimize the heat transfer characteristics of a two-phase gravity heat pipe with external fins. The influence of thermal input, fin thickness, width, and spacing on the thermal resistance and heat transfer efficiency of the heat pipe was analyzed by the method of controlled variables, resulting in empirical formulas. A central composite design and response surface methodology were employed to refine the experimental design, with the findings indicating that the adjustment of input thermal power and fin parameters significantly impacts thermal resistance and heat transfer efficiency. Furthermore, the congruence between simulation outcomes and experimental data corroborates the accuracy and reliability of this approach. These insights furnish both a theoretical foundation and practical guidance for augmenting the heat transfer performance of gravity heat pipes.