The rapid development of freshwater resources from renewable energy sources plays an important role in satisfying the modern life requirements. When it comes to the solar energy, one of the major issues is how to improve the performance and productivity of solar stills. In this respect, more attention is paid to the solar pump oscillating flow impact on the performance and how turbulence affects the freshwater productivity. This work investigates the impact of flow oscillation frequency, non-circular jets and porosity on the solar still productivity and expresses the functional form which relates the productivity, Prandtl number; Reynolds number and the solar intensity. An innovative design comprising a pyramid stepped solar still and a solar pump is combined with solar concentrators. It was found that the flow oscillation caused water depth fluctuation thus minimizing the thermal inertia, while metallic porous structures enhanced the evaporation rates. The water jet inertia affected the turbulence largest scale. Employing a flow oscillation frequency of 1.4 Hz increased the turbulent kinetic energy to 12.5 m2/s2. The freshwater productivity reached 7.2 L/m2.day at an optimum porosity of 0.6. A squared water jet was found to be superior whereby the productivity became 8.4 L/m2 day. A copper helical absorber with a pitch/coil diameter ratio of 0.5 and a black paint maximized the productivity to 10.8 L/m2 day.
Delapedra-SilvaVFerreiraPCunhaJ, et al.Methods for financial assessment of renewable energy projects: a review. Processes2022; 10: 184.
2.
LambertAACuevasSdel RioJA. Enhanced heat transfer using oscillatory flows in solar collectors. Sol Energy2006; 80: 1296–1302.
3.
ChoudhariMGawaliBSPatilJD. Oscillating flow heat transfer: a comprehensive review. Energy Sources, Part A Recovery, Util Environ Eff2022; 44: 7598–7619.
4.
BiHYangJChenC, et al.Heat transfer and flow characteristics of intermittent oscillating flow in tube. Appl Therm Eng2023; 225: 120233.
5.
GuoCGaoMYuH, et al.Investigation of heat transfer characteristics in air-to-air heat exchanger with steady flow, oscillating flow and sound waves. Int J Therm Sci2024; 197: 108845.
6.
SoheibiHShomaliZGhazanfarianJ. Combined active-passive heat transfer control using slotted fins and oscillation: the cases of single cylinder and tube bank. Int J Heat Mass Tran2022; 182: 121972.
7.
El-ZahabyAMKabeelAEBakryA, et al.Enhancement of solar still performance using a reciprocating spray feeding system: an experimental approach. Desalination2011; 267: 209–216.
8.
Kargar Sharif AbadHGhiasiMJahangiri MamouriS, et al.A novel integrated solar desalination system with a pulsating heat pipe. Desalination2013; 311: 206–210.
9.
AkdagUOzdemirMOzgucAF. Heat removal from oscillating flow in a vertical annular channel. Heat Mass Tran2008; 44: 393–400.
10.
MegahedMElsalmawyHEssaMA. Comparative study of pumping performance of fluidyne pump with ejector and centrifugal solar pumping systems. J Adv Res Fluid Mech Therm Sc2024; 119: 91–102.
11.
NarayanSGuptaARanaR. Performance analysis of liquid piston fluidyne systems. Mechanical Systems and Diagnosis2015; 2: 12–18.
12.
StevensJW. Low capital cost renewable energy conversion with liquid piston stirling engines. In: Proceedings of ASME 2010 International conference on energy sustainability. Arizona, 2010, pp. 479–484.
13.
OrdaEMahkamovK. Development of “low-tech” solar thermal water pumps for use in developing countries. ASME2004; 126: 768–773.
14.
Moazami GoudarziHYarahmadiMShafiiMB. Design and construction of a two-phase fluid piston engine based on the structure of fluidyne. Energy2017; 127: 660–670.
15.
ElnasrAMKamalMSaadH, et al.Water desalination using solar energy: humidification and dehumidification principle. Innovative Energy Research2015; 4: 1000121.
16.
ElsharifN. Solar water desalination using multi-effect water stills with reduced internal pressure. England: Northumbria, 2018. Ph. D. thesis.
17.
DuffieJABeckmanWA. Solar engineering of thermal processes. 4th ed.New Jersey: John Wiley &Sons, 2013, pp. 322–345.
18.
BegumHAAbu YousufMSiddique-e RabbaniK. Effect of top cover tilt angle with ground surface on productivity of basin type solar distillation unit, Bangladesh. J Med Phys2017; 10: 40–46.
19.
MuftahAFSopianKAlghoulMA. Performance of basin type stepped solar still enhanced with superior design concepts. Desalination2018; 435: 198–209.
20.
MuftahAFAlghoulMAFudholiA, et al.Factors affecting basin type solar still productivity: a detailed review. Review2014; 32: 430–447.
21.
TanakaHNakatakeY. Theoretical analysis of a basin type solar still with internal and external reflectors. Desalination2006; 197: 205–216.
22.
AbdallahSBadranOAbu-KhaderM. Performance evaluation of a modified design of a single slope solar still. Desalination2008; 219: 222–230.
23.
MalikAManchandaHKumarM, et al.Recent advancements in stepped solar still and its performance parameters. Int J Res Appl Sci Eng Technol2017; 5: 2116–2122.
24.
KavitiAKRamASThakurAK. Influence of fully submerged permanent magnets in the evaluation of heat transfer and performance analysis of single slope glass solar still. J. Power and Energy2022; 236: 109–123.
25.
AlaudeenAJohnsonKGanasundarP, et al.Study on stepped type basin in a solar still. J. King Saud Univ.- Eng. Science2014; 26: 176–183.
26.
KumarTRBharathiBR. Effect of water depth on productivity of solar still with thermal energy storage. Int J Sci Res2013; 2: 413–417.
27.
KabeelAEElkenanyEAHawamOM. Experimental study of the performance of solar still using a reciprocating intermittent spray feeding system. J Renew Sustain Energy2013; 5. DOI: 10.1063/1.4780119.
28.
KateshiaJLakheraVJ. Analysis of solar still integrated with phase change material and pin fins as absorbing material. J Energy Storage2021; 35: 102292.
29.
TianYZhaoCY. A review of solar collectors and thermal energy storage in solar thermal applications. Appl Energy2013; 104: 538–553.
30.
SelvarajKNatarajanA. Factors influencing the performance and productivity of solar stills- A review. Desalination2018; 435: 181–187.
31.
VelmuruganVMandlinJStalinB, et al.Augmentation of saline streams in solar stills integrating with a mini solar pond. Desalination2009; 249: 143–149.
32.
VelmuruganVNaveen KumarKJNoorul HaqT, et al.Performance analysis in stepped solar still for effluent desalination. Energy2009; 34: 1179–1186.
33.
SharakaAZTabriziFF. Experimental study of an integrated basin solar still with a sandy heat reservoir. Desalination2010; 253: 195–199.
34.
JagannathSGawandeLalitB. Effect of shape of the absorber surface on the performance of stepped solar still. Energy Power Eng2013; 5: 489–497.
35.
AlAgouzSA. Experimental investigation of stepped solar still with continuous water circulation. Energy Convers Manag2014; 86: 186–193.
36.
PanchalHSadasivuniKKAhmedAA, et al.Graphite powder mixed with black paint on the absorber plate of the solar still to enhance yield: an experimental investigation. Desalination2021; 520: 115349.
37.
XuGNieSXiongZ. Research on PV array reconstruction and full-cycle maximum power point tracking technology of space solar power station. Space Solar Power and Wireless Transmission2024; 1: 115–128.
38.
KurtEDemirciMSahinHM. Numerical analysis of the concentrated solar receiver pipes with superheated steam. J. Power and Energy2022; 236: 893–910.
39.
JelleyNSmithT. Concentrated solar power: recent developments and future challenges. J. Power and Energy2015; 229: 693–713.
40.
AttallaMSalemM. Experimental investigation of heat transfer for a jet impinging obliquely on a flat surface. Exp Heat Transf2015; 28: 378–391.
41.
UddinNKeePTWeigandB. Heat transfer by jet impingement: a review of heat transfer correlations and high-fidelity simulations. Appl Therm Eng2024; 257: 124258.
42.
VelmuruganVGopalakrishnanMRaghuR, et al.Single basin solar still with fin for enhancing productivity. Energy Convers Manag2008; 49: 2602–2608.
43.
ReddyRMReddyKH. Upward heat flow analysis in basin type solar still. Journal of Mining and Metallurgy2009; 45: 121–126.
44.
GuptaBSharmaRShankarP, et al.Performance enhancement of modified solar still using water sprinkler: an experimental approach. Perspectives in Science2016; 8: 191–194.
45.
GandhiAMShanmuganSGorjianS, et al.Performance enhancement of stepped basin solar still based on OSELM with traversal tree for higher energy adaptive control. Desalination2021; 502: 114926.
46.
ThirugnanasambanthamARajanJAhsanA, et al.Effect of air flow on tubular solar still efficiency. Iran J Environ Health Sci Eng2013; 10: 31–37.
47.
NarayananSSYadavAKhaledMN. A concise review on performance improvement of solar stills. SN Appl Sci2020; 2: 511.
48.
MevadaDPanchalHAhmadeinM, et al.Investigation and performance analysis of solar still with energy storage materials: an energy- exergy efficiency analysis. Case Stud Therm Eng2022; 29: 101687.
49.
KabeelAESathyamurthyRSharshirSW, et al.Effect of water depth on a novel absorber plate of pyramid solar still coated with TiO2 nano black paint. J Clean Prod2019; 213: 185–191.
50.
AgrawalARanaRSSrivastavaPK. Heat transfer coefficients and productivity of a single slope single basin solar still in Indian climatic condition: experimental and theoretical comparison. Res-Effi Tech2017; 3: 466–482.
51.
KabeelAEKhalilAOmaraZM, et al.Theoretical and experimental parametric study of modified stepped solar still. Desalination2012; 289: 12–20.
52.
MegahedMElsalmawyHAEssaMA. Performance enhancement of the fluidyne pump. Egypt Int J Eng Sci Technol2020; 32: 73–79.
53.
TenthaniCMadhlopaAKimamboCZ. Improved solar still for water purification. J Sustain Energy Environ2012; 3: 111–113.
54.
NafeyASAbdelkaderMAbdelmotalipA, et al.Solar still productivity enhancement. Energy Convers Manag2001; 42: 1401–1408.
55.
AbdallahSAbu-KhaderMMBadranO. Effect of various absorbing materials on the thermal performance of solar stills. Desalination2009; 242: 128–137.
56.
Abd ElbarARHassanH. Energy, exergy and environmental assessment of solar still with solar panel enhanced by porous material and saline water preheating. J Clean Prod2020; 277: 124175.
57.
EssaFAAbdullahASOmaraZM, et al.Experimental study on the performance of trays solar still with cracks and reflectors. Appl Therm Eng2021; 188: 116652.
58.
OmaraZMKabeelAEYounesMM. Enhancing the stepped solar still performance using internal reflectors. Desalination2013; 314: 67–72.
59.
CoccoDCauG. Energy and economic analysis of concentrating solar power plants based on parabolic trough and linear Fresnel collectors. J Power and Energy2015; 229: 677–688.
60.
KabeelAEHarbyKAbdelgaiedM, et al.A comprehensive review of tubular solar still designs, performance, and economic analysis. J Clean Prod2020; 246: 119030.
61.
NafeyASAbdelKaderMAbdelmotalipA, et al.Enhancement of solar still productivity using floating perforated black plate. Energy Convers Manag2002; 43: 937–946.
62.
AfrandMKalbasiRKarimipourA, et al.Experimental investigation on a thermal model for a basin solar still with an external reflector. Energies2017; 10: 1–16.
63.
Varun RajSMuthu ManokarA. Design and analysis of solar still. Mater Today Proc2017; 4: 9179–9185.
64.
AhsanAImteazMThomasUA, et al.Parameters affecting the performance of a low cost solar still. Appl Energy2014; 114: 924–930.
65.
AbdullahAS. Improving the performance of stepped solar still. Desalination2013; 319: 60–65.
66.
UsmanMemonAAAnwaarH, et al.A forced convection of water-aluminum oxide nanofluids in a square cavity containing a circular rotating disk of unit speed with high Reynolds number: a Comsol Multiphysics study. Case Stud Therm Eng2022; 39: 102370.
67.
MohiuddinSAKavitiAKRaoTS, et al.Effect of water depth in productivity enhancement of fouling-free non-contact nanostructure desalination system. Sustain Energy Technol Assessments2022; 54: 102848.
68.
KamalMMAmerIAboelnasrM. Rotating heat pipe performance with internal wire mesh screens, Proceedings of the Institution of Mechanical Engineers, Part A: j. Power and Energy2010; 224: 993–1005.
69.
SinghAKSinghDBMallickA, et al.Energy matrices and efficiency analyses of solar distiller units: a review. Sol Energy2018; 173: 53–75.
70.
ShataMAboelsoudWKamalM, et al.Experimental investigation of the photovoltaic performance using porous media based cooling system. Engine Res J2020; 1: 39–42.
71.
SinghSKKaushikSCTyagiVV, et al.Comparative performance and parametric study of solar still: a review. Sustain Energy Technol Assessments2021; 47: 101541.
72.
EldokaishiAOAbdelsalamMYKamalMM, et al.Modeling of water-PCM solar thermal storage system for domestic hot water application using artificial neural networks. Appl Therm Eng2022; 204: 118009.
73.
AbdelsalamMYKamalMMAboelnasrM. Flat surface heat transfer enhancement by an impinging circular free water jet. Exp Heat Transf2014; 27: 276–295.
74.
ManchandaMKumarM. A comprehensive decade review and analysis on designs and performance parameters of passive solar still, Renewables, Wind. Water and Solar2015; 2(17): 1–24.
75.
AbujazarMSFatihahSRakmiAR, et al.The effects of design parameters on productivity performance of a solar still for seawater desalination: a review. Desalination2016; 385: 178–193.
76.
AmeenMAboelsoudWHussinAE, et al.Numerical analysis of transport phenomena in a Stirling regenerator. Journal of Al-Azhar University Engineering Sector2020; 15: 763–775.
77.
AmiriHAminyMLotfiM, et al.Energy and exergy analysis of a new solar still composed of parabolic trough collector with built-in solar still. Renew Energy2021; 163: 465–479.
78.
DubeyASinghSKTyagiSK. Advances in design and performance of dual slope solar still: a review. Sol Energy2022; 244: 189–217.
79.
SibagariangYPNapitupuluFHKawaiH, et al.Investigation of the effect of a solar collector, nozzle, and water cooling on solar still double slope. Case Stud Therm Eng2022; 40: 102489.
