Journal
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
Volume 235, Issue 24, Pages 7934-7950Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/09544062211000770
Keywords
Adsorption; brine water; desalination; exergy; hybrid; productivity; solar energy; solar still
Categories
Funding
- Centre for Engineering Research and Development (CERD), A P J Abdul Kalam Technological University, Trivandrum under CERD seed money scheme
- Technical Education Quality Improvement Program (TEQIP) phase II, Government of India
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This study presents a thermodynamic modeling and performance analysis of a hybrid desalination system consisting of a conventional solar still (CSS) and an adsorption desalination system (ADS). The system's water productivity and coefficient of performance were evaluated, and exergy loss and efficiency were also assessed based on the second law of thermodynamics. The hybrid system showed a maximum water productivity of 750ml and a coefficient of performance of 0.58, with main exergy destruction occurring in the solar still basin and adsorbent bed of ADS.
This study presents a thermodynamic modeling and performance analysis of a hybrid desalination system consisting of a conventional solar still (CSS) and an adsorption desalination system (ADS). To evaluate the performance of the system, a small scale model of a hybrid CSS-ADS system is designed, fabricated and tested under the meteorological condition of Kollam, Kerala, India. Water productivity of the hybrid CSS-ADS, followed by, assessing the coefficient of performance of the system is also carried out. The maximum water productivity of the system is estimated as 750 ml. The proposed hybrid system is able to produce the cooling effect along with desalination during its operation. The coefficient of performance (COP) is obtained as 0.58. The performance of the system is also assessed based on the second law of thermodynamics to study exergy loss and exergy efficiency of each and every component of the system. It is observed that the main sources of exergy destruction in the hybrid system occurs in the solar still basin and adsorbent bed of ADS. The total exergy loss and exergy efficiency of the hybrid system is found to be 0.224 W and 29.6%, respectively. Variation of brine water temperature, heat transfer coefficients, water productivity of CSS and ADS are also presented in this study. The study aims at a formidable solution to the low performance of conventional solar still.
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