Experimental Study of the Effect of Sun Tracking on the Performance of an Evacuated Tube Solar Cooker

In this study, the effect of sun tracking on the performance of an evacuated tube solar cooker is experimentally investigated. For this purpose, sun tracking is manually performed in time intervals of 5 min. Moreover, in another experiment, the solar cooker is placed towards the south with a tilt angle of 30º. In this research, the evacuated tube solar cooker is utilized to boil water. In addition, the comparison of the performance of the solar cooker in the fixed and movable situations is conducted from the energy and exergy viewpoints. The results indicate that the time required to boil 800 gr of water in the experiment in which the solar cooker is in the fixed situation is 2 h and 25 min. However, the sun tracking by the solar cooker reduces the mentioned time by about 1 h and 5 min (44.83%). Using sun tracking, the energy and exergy efficiencies of the solar cooker also increase about 4.92% and 0.57% in order.