Modares Mechanical Engineering

Modares Mechanical Engineering

Numerical Simulation of Single Slope Solar Still with Setting Rectangular, Triangular and Wavy Barriers on the Side Walls

Document Type : Original Research

Authors
Urmia university of technology
Abstract
Deficiency of potable water has created many problems for human and human society, Therefore, The production of fresh water from saline water is an important issue. One of the method of production fresh water from saline water is the use of solar stills. This paper is the numerical simulation of the conventional solar stills with setting Rectangular, Triangular, Wavy barriers on the left and right walls inside the solar still. Setting barriers causes a change in the pattern of humid airflow in the solar still that it affect water productivity and convective heat transfer rate. Also, changes in the size and number of barriers cause changes it will be in the result. The continuity, momentum, energy and concentration equations are discretized by finite volume method and the results are presented as flow function and concentration and temperature contours. The simulation results show that setting wavy barriers with A=0.01(m) and N=2 at left wall and A=0.075(m) and N=5 at right wall water productivity and convective heat transfer rate can be increased by about 31% and 31.34%.
Keywords

Subjects


M. Edalatpour, A. Kianifar, S. Ghiami, Effect of blade installation on heat transfer and fluid flow within a single slope solar still, Int. Commun. Heat Mass Transf. 66 (2015) 63–70 https://doi.org/10.1016/j.icheatmasstransfer.2015.05.015
A. Rahmani, A. Boutriaa, Numerical and experimental study of a passive solar still integrated with an external condenser, Int. J. Hydrogen Energy. (2017) https://doi.org/10.1016/j.ijhydene.2017.07.242
Hassanain Ghani Hameed, Hayder Azeez Neamah Diabil, M.A. Al-Moussawi, A numerical investigation of the enhancement of single-slope single-basin solar still productivity, (2023) https://doi.org/10.1016/j.egyr.2022.11.199
] Mohammad Hemmat Esfe, Davood Toghraie, Numerical investigation of wind velocity effects on evaporation rate of passive single-slope solar stills in Khuzestan province in Iran, (2022) https://doi.org/10.1016/j.aej.2022.07.015
D.E. Benhadji Serradj, T.N. Anderson, R.J. Nates, The use of passive baffles to increase the yield of a single slope solar still, (2021) https://doi.org/10.1016/j.solener.2021.08.054
M.Karthick, S.Joe Patrick, M. Appadurai, Subramania Bala Jeshurun, Productivity Enhancement of a Single Slope Solar Still with Energy Storage Medium, (2021) https://doi.org/10.1016/j.matpr.2021.09.548
Hitesh Panchal, Dinesh Mevada, Kishor Kumar Sadasivuni, F.A. Essa, S.Shanmugan, Mohammand Khalid, Experimental and water quality analysis of solar stills with vertical and inclined fins, (2020) https://doi.org/10.1016/j.gsd.2020.100410
] Hardik K. Jani, Kalpesh V. Modi, Experimental performance evaluation of single basin dual slope solar still with circular and square cross-sectional hollow fins, (2018) https://doi.org/10.1016/j.solener.2018.12.054
Kamel Rabhi, Rached Nciri, Faouzi Nasri, Chaouki Ali, Habib Ben Bacha, Experimental performance analysis of a modified single-basin single-slope solar still with pin fins absorber and condenser, (2017) http://dx.doi.org/10.1016/j.desal.2017.04.023
Vaibhav Rai Khare, Abhay Pratap Singh, Hemant Kumar, Rahul Khatri, Modelling and Performance Enhancement of Single Slope Solar Still Using CFD, (2017) https://doi.org/10.1016/j.egypro.2017.03.064
Ebru Kavak Akpinar, , Fatih Koçyig˘it, Energy and exergy analysis of a new flat-plate solar air heater having different obstacles on absorber plates, (2010) doi:10.1016/j.apenergy.2010.05.017
Salah Abdallah, Omar Badran, Mazen M. Abu-Khader, Performance evaluation of a modified design of a single slope solar still, (2008) doi:10.1016/j.desal.2007.05.015
Amaresh Dalal, Manab Kumar Das, Natural Convection in a Cavity With a Wavy Wall Heated From Below and Uniformly Cooled From the Top and Both Sides, (2006) DOI: 10.1115/1.2194044
] A.T. Shawaqfeh, M.M. Farid, New development in the theory of hat and mass transfer in solar stills, Sol. Energy. 55 (1995) 527–535
N. Rahbar, J.A. Esfahani, Productivity estimation of a single-slope solar still: Theoretical and numerical analysis, (2012) http://dx.doi.org/10.1016/j.energy.2012.10.023
] R.V Dunkle, Solar water distillation: the roof type and a multiple effect diffusion still, (1961). https://doi.org/10.5860/choice.43-4683
Sun, H., G. Laurita, and X. Nicolas, Natural convection and wall condaction or evaporation in humid air-filled cavities subjected to wall temperature variations. International journal of thermal sciences, 2011. https://doi:10.1016/j.ijthermalsci.2010.12.010