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Raffles Senjaya
Energy Conversion Research Division Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Jalan Ganesha no 10 Bandung 40132, West Java, Indonesia
Engineering

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Comparative Study on Solar Collector’s Configuration for an Ejector-Refrigeration Cycle Senjaya, Raffles; Astina, I Made
Journal of Engineering and Technological Sciences Vol 40, No 1 (2008)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (434.828 KB) | DOI: 10.5614/itbj.eng.sci.2008.40.1.4

Abstract

Solar collector’s configuration plays important role  on solar-powered refrigeration systems  to work as heat source for generator . Three types of solar collector consisting  of flat plate, evacuated tube, and compound parabolic solar collectors  are  compared  to  investigate  their  performances.  The  performances consist of the behavior of heat which can be absorbed by the collectors, heat loss from  the  collectors  and outlet temperature of working fluid at several slopes of the  solar  collectors.  The  new  accurate  analysis  method  of  heat  transfer  is conducted  to  predict  the  performance  of  the  solar  collectors.  The  analysis  is based  on  several  assumptions,  i.e.  sky  condition  at  Bandung  is  clear  and  not raining from 08.00 until 17.00 and thermal resistance at cover and absorber plate is  negligible. The numerical calculation results confirm that performance of  the evacuated  tubes  solar  collector  at  the  same  operating  conditions  is higher  than the  others.  For  the  case  of  an  evacuated-tubes  solar  collector  system  with aperture area of 3.5 m2, the maximum heat which can be absorbed is 3992  W for the highest solar intensity  of  970 W/m2 at 12.00  with  horizontal position of  the solar  collector.  At  this  condition,  the  highest  outlet  temperature  of  water  is 347.15 K with mass flow rate 0.02 kg/s and inlet temperature 298 K.
Co-Authors I Made Astina