Numerical study on geometrical specifications and operational parameters of multi-tube heat storage systems
作者： M. Esapour , M.J. Hosseini , A.A. Ranjbar , R. Bahrampoury
DOI: 10.1016/J.APPLTHERMALENG.2016.08.083
关键词: Streamlines, streaklines, and pathlines 、 Thermodynamics 、 Convective heat transfer 、 Heat exchanger 、 Heat transfer 、 Phase-change material 、 Thermal energy storage 、 Mechanics 、 Materials science 、 Shell and tube heat exchanger 、 Thermal conduction
摘要: Abstract In this paper, a numerical investigation as well comparison among multi tube heat exchangers is carried out for which variations of both geometrical and operational parameters are studied. The internal part the shell filled with RT35 phase change material heated by transfer fluid (HTF) carrying inner tubes. This paper studies effect number tubes their arrangement on liquid fraction, front melting time. details process progression presented via fraction contours streamlines. effective considered inlet temperature flow rate HTF. Results show that conduction dominant mechanism at initial stages proceeded convection dominated interval. As increase, contact surface between PCM HTF increases, thus convective accelerates reduces An increase in shortens time more effectively results also arrangements, ones whose located within upper half candidates longest Generally, same numbers, cases occupy bottom section system, faster obtained.
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