TY - JOUR
TI - The use of paraffin wax in a new solar cooker with inner and outer reflectors
AU - Arabacigil Bihter
AU - Yuksel Numan
AU - Avci Atakan
JN - Thermal Science
PY - 2015
VL - 19
IS - 5
SP - 1663
EP - 1671
PT - Article
AB - In this paper, the potential use and effectiveness of paraffin wax in a new  solar cooker was experimentally investigated during daylight and late evening  hours. For these experiments, a cooker having an inner reflecting surface was  designed, constructed by filling paraffin wax and metal shavings. The side-  and sub-surface temperatures of the paraffin wax in the cooker are measured  in the summer months of June and July. The thermal efficiency of the cooker  was tested on different conditions. The results show that the optimum angle  of the outer reflector is 30°. Here, the peak temperature of the paraffin wax  in the solar cooker was 83.4 °C. The average solar radiation reflected makes  a contribution of 9.26% to the temperature of paraffin wax with the outer  reflector. The solar cooker with the outer reflector angle of 30° receives  also reflected radiation from the inner reflectors. Besides, the heating time  is decreased to approximately 1 hour. The designed solar cooker can be  effectively used with 30.3% daily thermal efficiency and paraffin wax due to  the amount of energy stored.