Optical lens solar dryer

Abstract

The objectives of this research was to compare temperature between the 10 light concentrating lens solar dryer and a non-integrated lens solar dryer. Temperature at various positions of the dryer that changes every 10 minutes. and the solar radiation intensity changes every 15 minutes from 07:30 a.m. to 5:30 p.m. were measured. Percentage difference between the temperature inside the solar dryer with and without 10 concentrating lenses and the ambient temperature were investigated and reported. The results showed that the average temperature and light intensity of solar dryer with 10 light concentrating lens are highest between 11:00 a.m. to 2:00 p.m. During this period, the maximum of the intensity of solar radiation is 805 watts per square meter. The maximum internal temperature of the 10 light concentrating lenses
solar dryer is 68.2 °C and the maximum temperature inside the solar dryer without condensing lens is 64.6°C. The percentage difference in temperature inside the 10 light concentrating lens solar drying cabinets with the environment is higher than the difference temperature inside the without concentrating lenses solar dryer.