| dc.description.abstract | Solar radiation that reaches the earth's surface can be collected to be converted into
useful heat energy with the help of a solar collector. Research has been carried out to
improve the performance of solar collectors, such as by varying the collector tilt angle,
using additional reflectors, varying pipe diameters, modifying pipe shape designs and
the influence of the distance between pipes. However, no one has yet conducted
research on optimizing the length of pipes in solar water heaters. For this reason,
research has been carried out to determine the optimization of solar water heaters by
determining the pipe length numerically and experimental testing to heat 130 liters of
water. In numerical calculations, we also varied the distance between the cover glasses
and the height of the collector chamber. It was found that the distance between the
cover glasses was 2 mm and the height of the collector chamber was 2 mm, which is
the maximum temperature value for a solar water heater with an optimal pipe length
of 24 m. The maximum water temperature that can be achieved is 50.433℃.
Experimental test results, the maximum water temperature that can be achieved is 45.6
℃. Heat transfer analysis shows that the incoming energy from solar radiation, useful
energy and heat loss in the solar collector are 16.267 MJ, 11.959 MJ, and 4.308 MJ.
Thus, the total efficiency of the solar collector is 73.52%. | en_US |
