Effect of a Pipe Number on The Heat Transfer Rate for a Granite Stone Absorber Solar Collector

Abstract: As the fossil energy has been getting depletion, it is important to utilize alternative energies such as solar energy.  An  equipment  that  can  be  used  for  capturing  and  converting  solar  energy  is  solar  collector.  Two identical  collectors  used  in  this  study  were  placed  facing  to  the  North  with  an  inclination  angle  of  15°.  The collector dimension was 0.8 m x 1 m x 0.05 m. One collector contained 5 parallel pipes and the other contained 7 parallel pipes.  The water used in the test was flowed naturally due to the gravity force from a higher tank and was adjusted using a valve fitted at the end of the collector. The  water flow rates employed were 200, 250 and 300  cc/minutes  and    measured  using  a  volume  meter  and  a  stop  watch.  The  results  showed  that  the  energy coming  into  the  collector,  energy  absorbed  by  the  absorber  and  water,  increased  with  an  increase  in  the observation time and reached the peak value at about  2.30 pm. After that, they decreased. The effect of the pipe number is insignificant. 

Keywords: solar collector, stone granite absorber, collector performance

Author: M. Mirmanto, M. Wirawan, B.H. Saputra

Journal Code: jptmesingg160001

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