Mathematical Modelling and Optimization of Cylindrical Heat Pipe

Mathematical Modelling is prepared for Cylindrical Heat Pipe in this paper. Heat transfer limitations are calculated for optimization of axial orientation and parameters of Cylindrical Heat Pipe. Cylindrical Heat pipes are considered for Mathematical Modelling on the basis of axial orientations and design parameters. Capillary limitation of Cylindrical Heat Pipe is the main heat transfer limitation for heat pipe design. Various heat transfer limitations are plotted for different parameters of Cylindrical Heat Pipe, thermo-physical properties of the working fluids and wick structure parameters. Copper and water are considered as container material and working fluid of Cylindrical Heat Pipe, respectively. Mathematical model has been prepared for axial orientations of 180º and 90º with width of wick structure as 0.28 mm and 0.48 mm and spherical diameter of copper powder as 50 and 56 μm, respectively. Cylindrical Heat Pipe with 180º axial orientation can transfer more heat than Cylindrical Heat pipe with 90º axial orientation at operating temperature range. Cylindrical Heat Pipe with 0.48 mm width of wick structure and 56 μm spherical diameter of copper powder has more heat transfer limitation within range of operating temperature. Cylindrical Heat Pipe is optimized for good thermal performance.