A relative study on energy and exergy analysis between conventional single slope and novel stepped absorbable plate solar stills
2021
Balachandran, Gurukarthik Babu | David, Prince Winston | Alexander, Anandha Balaji | Athikesavan, Muthu Manokar | Chellam, Padmanaban Velayudha perumal | Kumar, Krishna Kumar Sasi | Palanichamy, Vinothkumar | Kabeel, Abd Elnaby | Sathyamurthy, Ravishankar | García Márquez, Fausto Pedro
The innovation of novel absorbing materials using composite materials and nanotechnology is of new trends for many researches. Here, the present study is concerning to enhance the distilled water productivity of a proposed solar still (PSS) using novel absorbing materials. The absorbing material is composed of chitosan (obtained from waste shrimp shells), ethylene diamine tetraacetic acid (EDTA), and Chrysopogon zizaniodes (Vetiver). The combination of these materials is coined as CHEDZ, and it acts as a super absorbent polymer that is coated on the stepped solar still. Evaporation rate increases due to this absorbent, which further increases the yield of the still. In this present study, the PSS is compared with the conventional solar still (CSS) for the use of assessing the yield of freshwater in the same atmospheric circumstance. The experimental setup was performed through the period from December to February 2020 in the Indian climatic condition. The freshwater productivity was improved to 3.05 L/day while the yield of the CSS is 2.47 L/day. The increase in efficiency obtained from a PSS is 39.71% more than the productivity attained from the CSS. The energy efficiency of the PSS is 18.34% and the exergy efficiency is 0.45%.
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