Title :
A moving boundary model for heat transfer in phase change material [for space power applications]
Author :
Majumdar, Pradip ; Sharma, Rakesh K.
Author_Institution :
Northern Illinois Univ., DeKalb, IL, USA
Abstract :
A differential model for the moving boundary problem that can be used to study the performance of phase change materials of various compositions used in spacecraft solar heat engine power systems, during the heat absorption and heat rejection period, is discussed. The governing equations and necessary initial and boundary conditions are transformed into a set of integral equations. Numerical solutions to these equations are obtained using an iterative scheme. Results are presented in terms of solid and liquid phase temperature distributions and interface position as a function of time for different Stefan numbers
Keywords :
heat engines; heat transfer; integral equations; iterative methods; solar absorber-convertors; solar energy concentrators; space vehicle power plants; temperature distribution; Stefan numbers; differential model; heat absorption; heat engines; heat rejection; heat transfer; integral equations; iterative methods; liquid; moving boundary model; performance; phase change material; solar absorber-convertors; solid; space power; temperature distributions; Absorption; Aircraft manufacture; Boundary conditions; Heat engines; Heat transfer; Integral equations; Phase change materials; Power system modeling; Solar heating; Space heating;
Conference_Titel :
Energy Conversion Engineering Conference, 1989. IECEC-89., Proceedings of the 24th Intersociety
Conference_Location :
Washington, DC
DOI :
10.1109/IECEC.1989.74428
