Maqola

Numerical simulation and experimental study on fan-driven forced convection heat storage in a cascaded phase change thermal storage system

Mingzhi ZhaoCollege of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, 010051, ChinaYingjie LiuCollege of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, 010051, ChinaZheng HanSchool of Physics and Intelligent Manufacturing Engineering, Chifeng University, Chifeng, 024000, ChinaChun ChangCollege of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, 010051, ChinaDaorina BaoCollege of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot, 010051, ChinaRasakhodzhaev Bakhramzhan SabirovichNational Scientific Institute of Renewable Energy Source Under Ministry of Energy of the Republic of Uzbekistan, Bodomzor yoli Str., 2-B, 100084, Tashkent, UzbekistanAkhadou JobirNational Scientific Institute of Renewable Energy Source Under Ministry of Energy of the Republic of Uzbekistan, Bodomzor yoli Str., 2-B, 100084, Tashkent, Uzbekistan

2026en

Ochiq kirish: yoʻq

ABI

Annotatsiya

Thermal energy storage addresses the intermittency of renewable energy sources. This study presents a novel approach by integrating fan-driven forced convection into a Cascaded Phase Change (CPCS) thermal storage system, aiming to overcome the inherent limitation of low thermal conductivity in PCMs and to coordinate the melting processes across different temperature zones. The work uniquely couples experimental characterization of tank temperature stratification with a synergistic CPCS-forced convection design. Numerical and experimental investigations reveal how forced convection intensity (characterized by N u ) governs melting time, storage efficiency, and inter-regional phase change synergy. Results demonstrate that active forced convection significantly enhances performance, with an optimal fan speed of 80 r/min achieving the best coordination (minimized S tdif of 0.03) and peak system efficiency ( S ttotal of 0.43), thereby improving overall heat storage capacity by 8.1% compared to natural convection. Crucially, the study identifies that excessively low convection intensity fails to yield net energy benefits, providing critical guidance for optimizing active thermal storage systems.

Hali tarjima qilinmagan

Identifikatorlar

DOI: 10.1016/j.est.2026.121237

Iqtiboslar va manbalar

0 ta iqtibos27 ta foydalanilgan manba