Numerical study of melting and solidification in a wavy double-pipe latent heat thermal energy storage system
作者： Amin Shahsavar , Hafiz Muhammad Ali , Roohollah Babaei Mahani , Pouyan Talebizadehsardari
DOI: 10.1007/S10973-020-09864-9
关键词: Annulus (firestop) 、 Heat exchanger 、 Wavelength 、 Pressure drop 、 Waviness 、 Mechanics 、 Latent heat 、 Dimensionless quantity 、 Heat capacity rate 、 Materials science
摘要: The objective of this paper is to develop the influences channel waviness on performance a latent heat storage system during phase change mechanism. exchanger vertically oriented double pipe where transfers to/from PCM in annulus by moving water inner tube. Various wavelengths, as well wave amplitudes, are examined at various fluid Re and temperatures (Tin) find effects different aspects melting/solidification time, pressure drop, pumping power exchanged rate. Increasing Re, Tin amplitude wavy wall improves melting solidification mechanisms. Besides, it found that there an optimum dimensionless wavelength 0.2 for achieving minimum times result maximum between PCM. Furthermore, has almost negligible effect which reduced wavelengths higher than 2.0. In best scenario, required time melt solidify reduces 28.6% 57.63%, respectively, using channels compared with smooth case.
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