Abstract
In this modeling investigation, freezing of NEPCM inside a chamber with triangular cold cylinder has been scrutinized. With mixing copper oxide nano-powders and H2O, new material has been generated. To include the impact of nano-powder shape, empirical correlations were utilized. For simulation of such transient conduction mechanism, finite element approach was applied with considering grid adaption. Amplitude of top wall and shape coefficient were two active factors and simulations were demonstrated their effects. Examination of accuracy of code shows nice agreement. Adding nano-powders enhances the conduction and style of powders can affect the freezing process. The minimum time for full freezing is 197.0352 s which can be achieved when A = 0.3 and m = 5.7. Augment of shape factor leads to decrement of time by 8.36%. With rise of A, freezing time declines by 11.78% because PCM volume decreases inside the chamber.