Design, fabrication and modeling of a new solar still desalination system and evaluation of its performance

Authors

1 Assistant Professor, Department of Energy, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advance technology, Kerman, Iran.

2 M.Sc student, Graduate University of advance technology, Kerman, Iran.

3 Assistant Professor, Materials and Energy Research Center, Karaj, Iran.

Abstract

In this study, a new solar water desalination system is designed and fabricated. In this system, solar energy intensity has been concentrated by means of parabolic trough collector, which reflects the sunrays to its focal line, where the still is located. Performance of the desalination system was studied in real conditions. The effect of adding steel sponge to the water inside the still and the use of a canopy on the condenser fins has been studied. Results show that the performance of the desalination system increase by 17.7% and 6.3% by using steel sponge and canopy, respectively. In order to investigate the effect of various factors on the performance of the present desalination system, a thermal model is developed based on the conservation of energy. The governing equations are implemented and solved numerically in MATLAB software. Then results of this modeling, including water temperature, adsorbent plate temperature and rate of fresh water production were compared with empirical data and a good agreement between them was observed. Average relative error between experimental and thermal model results for all variables was less than 6 percent. Finally, the model is used to study the behavior of the machine in different seasons.

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Main Subjects

References

[1]  Kalogirou SA (2005) Seawater desalination using renewable energy sources. Prog Energy Combust Sci 31(3): 242-281.
[2]  Najafi G, Ghobadian B, Mamat R, Yusaf T, Azmi WH (2015) Solar energy in Iran: Current state and outlook. Renewable Sustainable Energy Rev 49: 931-942.
[3]  Desalination From Wikipedia, Accessed; https://en.wikipedia.org/wiki/Desalination#cite_note-5.
[4]  Sampathkumar K, Arjunan TV, Pitchandi P, Senthilkumar P (2010) Active solar distillation-A detailed review. Renewable Sustainable Energy Rev 14(6): 1503-1526.
[5]  Shatat M, Worall M, Riffat S (2013) Opportunities for solar water desalination worldwide: Review. Sustain Cities Soc 9: 67-80.
[6]  Zhang Y, Sivakumar M, Yang S, Enever K, Ramezanianpour M (2018) Application of solar energy in water treatment processes: A review. Desalination 428: 116-145.
[7]  Kalidasa Murugavel K, Chockalingam KKSK, Srithar K (2008) Progresses in improving the effectiveness of the single basin passive solar still. Desalination 220(1-3): 677-686.
[8]  Rajaseenivasan T, Murugavel KK, Elango T, Hansen RS (2013) A review of different methods to enhance the productivity of the multi-effect solar still. Renewable Sustainable Energy Rev 17: 248-259.
[9]  Muthu Manokar A, Kalidasa Murugavel K, Esakkimuthu G (2014) Different parameters affecting the rate of evaporation and condensation on passive solar still - A review. Renewable Sustainable Energy Rev 38: 309-322.
[10] Somwanshi A, Tiwari AK (2014) Performance enhancement of a single basin solar still with flow of water from an air cooler on the cover. Desalination 352: 92-102.
[11] El-Sebaii A (2000) Effect of wind speed on some designs of solar stills. Energy Convers Manage 41(6): 523-538.
[12] Esfahani JA, Rahbar N, Lavvaf M (2011) Utilization of thermoelectric cooling in a portable active solar still—an experimental study on winter days. Desalination 269(1-3): 198-205.
[13] Omara ZM, Abdullah AS, Kabeel AE, Essa FA (2017) The cooling techniques of the solar stills' glass covers – A review. Renewable Sustainable Energy Rev 78: 176-193.
[14] Shanmugan S, Rajamohan P, Mutharasu D (2008) Performance study on an acrylic mirror boosted solar distillation unit utilizing seawater., Desalination 230(1-3): 281-287.
[15] Nassar YF, Yousif SA, Salem AA (2007) The second generation of the solar desalination systems. Desalination 209(1-3): 177-181,
[16] Omara Z, Kabeel A, Younes M (2013) Enhancing the stepped solar still performance using internal reflectors. Desalination 314: 67-72.
[17] Tiwari AK, Tiwari G (2007) Thermal modeling based on solar fraction and experimental study of the annual and seasonal performance of a single slope passive solar still: the effect of water depths. Desalination 207(1-3): 184-204.
[18] Hamadou OA, Abdellatif K (2014) Modeling an active solar still for sea water desalination process optimization. Desalination 354: 1-8.
[19] Hansen RS, Narayanan CS, Murugavel KK (2015) Performance analysis on inclined solar still with different new wick materials and wire mesh. Desalination 358: 1-8.
[20] Shukla S, Sorayan V (2005) Thermal modeling of solar stills: an experimental validation. Renew Energy 30(5): 683-699.
[21] Velmurugan V, Gopalakrishnan M, Raghu R, Srithar K (2008) Single basin solar still with fin for enhancing productivity. Energy Convers Manage 49(10): 2602-2608.
[22] Alaian W, Elnegiry E, Hamed AM (2016) Experimental investigation on the performance of solar still augmented with pin-finned wick. Desalination 379: 10-15.
[23] Khalifa AJN, Ibrahim HA (2010) Effect of inclination of the external reflector of simple solar still in winter: An experimental investigation for different cover angles. Desalination 264(1): 129-133.
[24] Malaeb L, Aboughali K, Ayoub GM (2016) Modeling of a modified solar still system with enhanced productivity. Sol Energy 125: 360-372.
[25] Abdel-Rehim ZS, Lasheen A (2007) Experimental and theoretical study of a solar desalination system located in Cairo, Egypt. Desalination 217(1-3): 52-64,.
[26] Tiwari GN, Suneja S (1998) Performance evaluation of an inverted absorber solar still. Energy Convers Manage 39(3-4): 173-180.
[27] Tiwari GN, Dimri V, Singh U, Chel A, Sarkar B (2007) Comparative thermal performance evaluation of an active solar distillation system. Int J Energy Res 31(15): 1465-1482.
[28] Çengel YA, Boles MA (2002) Thermodynamics: An engineering approach. McGraw-Hill.
[29] Jafari S, Javaran EJ (2012) An optimum slope angle for solar collector systems in kerman using a new model for diffuse solar radiation. Energy sourc A, Recovery util environ effects 34(9): 799-809.
[30] Duffie JA, Beckman WA (2013) Solar engineering of thermal processes. John Wiley & Sons.
Journal of Solid and Fluid Mechanics
Volume 8, Issue 2
July 2018
Pages 205-220

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