Effect of a Pipe Number on The Heat Transfer Rate For a Granit 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 othercontained 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 significant and the performance of
the collector containing 7 pipes is better than that containing 5 pipes.
Author: M. Mirmanto, M.
Wirawan, B.H. Saputra
Journal Code: jptmesingg160012