Energy matrices, exergoeconomic and enviroeconomic analysis of modified multi–wick basin type double slope solar still

Abstract

The present study is devoted to developing a thermal model of modified multi–wick basin type double slope solar still (MMWBDSSS). Analytical expressions of temperatures of water, wick, walls, and glass covers, distillate yield and instantaneous efficiency have been derived. The experimental validation of thermal model has been carried out and a fair agreement has been detected between theoretical results and experimental observations. On the basis of annual energy and exergy, the energy matrices, namely, the energy payback time (EPBT); life cycle conversion efficiency (LCCE); energy production factor (EPF), enviroeconomic and exergoeconomic analysis has also been evaluated for the solar still with jute and black cotton wicks under the climatic conditions of Allahabad, Uttar Pradesh (U.P.), India. The CO2 emission mitigated per annum has been found to be 7.82 and 8.69 tons on energy basis; and 0.155 and 0.198 tons on exergy basis with jute and black cotton wicks at 1 cm water depth, respectively. The exergoeconomic parameter has been found to be 0.0623 kWh/Rs. and 0.0791 kWh/Rs. for the solar still with jute and black cotton wicks at 1 cm water depth, respectively for 4% interest rate and 50 years life span of the system.