The optimization of radial rotating convective pipes

• The exchange of heat between two fluids established by radial rotating pipes.
• Introduced a mathematical model of radial rotating pipes with complex geometric shape.
• Established model of total entropy generation of complex radial rotating pipes.
• Established model of effectiveness of complex radial rotating pipes.
• The optimized geometric parameters of complex radial rotating pipes.

This paper presents the optimization of geometrical parameters of the heat exchanger with radial rotating pipes minimizing entropy generated and maximizing effectiveness. Three radial rotating models with different geometrical profiles and common model for all three models is complex rotating model is used in this investigation. Complex rotating model is the general model from which the change in geometric parameters such special cases can get each of the three tested models. Mathematical model generated total entropy and effectiveness of all three models, as well as the complex model is established. Complex model is subjected to optimization of geometrical parameters of rotating pipes generated by minimizing entropy and maximizing effectiveness. Finally, there was obtained the optimal geometric shape of the heat exchanger with radial rotating pipes.