Transient process in a finned triplex tube during phase changing of aluminum oxide enhanced PCM Zhixiong Li, M. Sheikholeslami, Zahir Shah, Ahmad Shafee, Abdel-Rahman Al-Qawasmi and I. Tlili Eur. Phys. J. Plus, 134 4 (2019) 173 Published online: 26 April 2019 DOI: 10.1140/epjp/i2019-12627-9