Mathematical analysis of optimized requisites for novel combination of solar distillers

Abstract

This study examines the impact of variable Evacuated Annular Tube Collectors (EATCs) on performance, both with and without the use of parabolic concentrators. The study aims to address the irregular use of EATCs by utilizing novel parabolic solar receivers (PSRs) to enhance the performance of the recommended double slope solar still (DSS) in comparison to conventional or PSR-assisted single sloped systems. The DSS-EATC-PSR system has been improved with the inclusion of basin mass temperature (11.4 %) while adhering to a 30° inclination of the basin cover and EATC tubes. An increase in natural thermo siphon circulation has been achieved with improvement of 28.1 % and 0.1 % for DSS-EATC-PSR in comparison to single slope solar still (SSS) with EATC and SSS-EATC-PSR, respectively. The daily energy-exergy efficiencies of the system exhibit a slight decrease of 8.4 % and 4.7 % for overall and exergy, respectively, compared to the conventional solar still system. The daily yield has demonstrated a 4.6 % improvement compared to the SSS system, while maintaining a minimal promotion price of $0.07 per liter. This has been achieved despite a noticeable increase in production cost. The CO2 mitigation results in a higher environmental revenue compared to the SSS system by 5.9 % and 14.6 %. The cost analysis of the DSS system indicates a reduction of 6.6 % in expenses. Additionally, the productivity of the systems has been observed to exceed 100 %, thereby confirming the feasibility of the proposed systems.