TY - JOUR
TI - Heat transfer enhancement through PCM thermal storage by use of copper fins
AU - Rudonja Nedžad R
AU - Komatina Mirko S
AU - Živković Goran S
AU - Antonijević Dragi Lj.
JN - Thermal Science
PY - 2016
VL - 20
IS - 11
SP - 251
EP - 259
PT - Article
AB - Enhancement of heat transfer over a cylinder shaped thermal energy storage  filled by paraffin E53 by use of radial rectangular copper fins was  analyzed. The thermo-physical features of the storage material are  determined in separate experiments and implemented to Fluent software over  UDF. Advanced thermal storage geometry comprehension and optimization  required introduction of a parameter suitable for the analysis of heat  transfer enhancement, so the ratio of heat transfer surfaces as a factor was  proposed and applied. It is revealed that increase of the ratio of heat  transfer surfaces leads to the decrease of melting time and vice versa.  Numerical analysis, employing the 3D model built in Ansys software, observed  storage reservoir geometries with variable number of longitudinal radial  fins. The adjusted set of boundary conditions was carried out and both  written in C language and implemented over UDF in order to define variable  heat flux along the height of the heater. The comparison of acquired  numerical and experimental results showed a strong correlation. Experimental  validation of numerical results was done on the real TES apparatus.  [Projekat Ministarstva nauke Republike Srbije, br. III42011, TR 33042 i OI  176006]