Thermodynamic analysis of single slope solar still using graphite plates and block magnets at seasonal climatic conditions

摘要

In this research, the thermodynamic (energy and exergy) analysis of single slope solar still using graphite plates and block magnets (GPBMSS) were investigated during summer and winter climatic conditions of Coimbatore city (latitude: 11 degrees 0168N and longitude: 76 degrees 9558 ' E), in India, 2019. The results observed in GPBMSS was compared with conventional solar still (CSS) under the same climatic conditions. The outcomes observed that, the hourly productivity in GPBMSS was 19.6 and 22.8 higher in summer and winter days, respectively when compared to CSS. The cumulative productivity in GPBMSS was found to be about 3.93 kg/m(2) and 3.56 kg/m(2) respectively, for 12 h observations during summer and winter days. Furthermore, the energy and exergy efficiencies of GPBMSS was substantially improved by 20.6 and 18.1 when compared to CSS during summer days. Similarly, the energy and exergy efficiencies of GPBMSS was increased by 18 and 19 than CSS in winter days. In addition, the maximum basin exergy destruction was observed in CSS than other solar still components. The results observed that, the heat storage ability of the graphite plates and water magnetization in GPBMSS were greatly decreased the exergy destructions. Finally, the water quality analysis proved that, the distillate collected from the both GPBMSS and CSS were satisfied the requirements recommended by Bureau of Indian Standards.