ZHANG Peng, XIAO Xin, WANG Ruzhu, et al. Heat transfer characteristics of shell-tube latent thermal energy storage system[J]. CIESC Journal, 2012, (S2): 14-20.
ZHANG Peng, XIAO Xin, WANG Ruzhu, et al. Heat transfer characteristics of shell-tube latent thermal energy storage system[J]. CIESC Journal, 2012, (S2): 14-20.DOI: 10.3969/j.issn.0438-1157.2012.z2.003.
The charging and discharging characteristics of a latent thermal energy storage(LTES)system using pure paraffin and composite paraffin/expanded graphite(EG)PCMs were experimentally investigated.The results showed that the thermal conductivity of the composite PCM was distinctly enhanced
whereas natural convection was hampered because the paraffin was confined in the porous structure of the EG.The time-durations of the charging and discharging processes with different flow rates for heat storage/retrieval were discussed.The time-duration of composite PCM during the discharging process was reduced more than that during the charging process
and the charging and discharging rates could be improved significantly with the higher flow rate.The charging process of the LTES system was numerically investigated with enthalpy method