This study emphasizes the comparative investigation of the thermal capacity of parabolic solar trough collectors with spherical-shaped balls and two types of elliptical inserts (longitudinal orientation). Hybrid nanofluid is the heat-carrying liquid obtained by mixing CuO and Al2O3 nanoparticles in distilled water. Analytical investigations are conducted for 1% vol. concentration of hybrid nanoparticles in distilled water for varying proportions. Computational analysis is chosen to obtain thermal as well as flow trends in the tube receiver. The outcomes disclosed that 13.3%, 10.02%, and 16% improvements are noted for thermal efficiency, Nusselt number, and thermal performance index with elliptical inserts of minor diameter 12 mm in the receiver, respectively, than spherical ball inserts. The highest pump work of 35 W is associated with spherical inserts at 0.033 kg/s.
MohammedHAVuthaluruHBLiuS. Thermohydraulic and thermodynamics performance of hybrid nanofluids based parabolic trough solar collector equipped with wavy promoters. Renew Energ2022; 182: 401–426.
2.
AlqarniMMMahmoudEEAlgehyneEA,et al.Improvement of the thermal and hydraulic performance of parabolic trough collectors using hybrid nanofluids and novel turbulators with holes and ribs. Sustain Energy Technol Assess2021; 47: 101480.
3.
SamiezadehSKhodaverdianRDoranehgardMH,et al.CFD Simulation of thermal performance of hybrid oil-Cu-Al2O3 nanofluid flowing through the porous receiver tube inside a finned parabolic trough solar collector. Sustain Energy Technol Assess2022; 50: 101888.
4.
MashhadianAHeyhatMMMahianO. Improving environmental performance of a direct absorption parabolic trough collector by using hybrid nanofluids. Energy Convers Manage2021; 244: 114450.
5.
KhanMAlsaduniINAlluhaidanM,et al.Evaluating the energy efficiency of a parabolic trough solar collector filled with a hybrid nanofluid by utilizing double fluid system and a novel corrugated absorber tube. J Taiwan Inst Chem Eng2021; 124: 150–161.
6.
BellosETzivanidisCSaidZ. A systematic parametric thermal analysis of nanofluid-based parabolic trough solar collectors. Sustain Energy Technol Assess2020; 39: 100714.
7.
BellosETzivanidisC. Thermal analysis of parabolic trough collector operating with mono and hybrid nanofluids. Sustain Energy Technol Assess2018; 26: 105–115.
8.
AlmitaniKHAlzaedAAlahmadiA,et al.The influence of the geometric shape of the symmetrical twisted turbulator on the performance of parabolic solar collector having hybrid nanofluid: numerical approach using two-phase model. Sustain Energy Technol Assess2022; 51: 101882.
9.
KhetibYSedraouiKAmmarA,et al.The numerical investigation of spherical grooves on thermal–hydraulic behavior and exergy efficiency of two-phase hybrid MWCNT-Al2O3/water nanofluid in a parabolic solar collector. Sustain Energy Technol Assess2021; 47: 101530.
10.
ChakrabortyODasBGuptaR. Effect of spherical balls insert in collector tube of parabolic trough collector by considering Al2O3-based water. J Braz Soc Mech Sci Eng2022; 44: 1–17.
11.
ChakrabortyORoySDasB,et al.Computational analyses of parabolic trough solar collector in the presence of helical coil-insert. Int J Environ Sci Technol2022; 46: 1–20.
12.
SubramaniJNagarajanPKWongwisesS,et al.Experimental study on the thermal performance and heat transfer characteristics of solar parabolic trough collector using Al2O3 nanofluids. Environ Prog Sustain Energy2018; 37: 1149–1159.
13.
MwesigyeAHuanZMeyerJP. Thermodynamic optimisation of the performance of a parabolic trough receiver using synthetic oil–Al2O3 nanofluid. Appl Energy2015; 156: 398–412.
14.
ZafarMAAliMAkhterJ,et al.Characterization and performance investigation of metallic oxides based nanofluids in compound parabolic concentrating solar collector. Sustain Energy Technol Assess2022; 54: 102786.
15.
SubramaniJNagarajanPKMahianO,et al.Efficiency and heat transfer improvements in a parabolic trough solar collector using TiO2 nanofluids under turbulent flow regime. Renew Energ2018; 119: 19–31.
16.
HeyhatMMValizadeMAbdolahzadeS,et al.Thermal efficiency enhancement of direct absorption parabolic trough solar collector (DAPTSC) by using nanofluid and metal foam. Energy2020; 192: 116662.
17.
Tagle-SalazarPDNigamKDPRivera-SolorioCI. Heat transfer model for thermal performance analysis of parabolic trough solar collectors using nanofluids. Renew Energ2018; 125: 334–343.
18.
MahianOKianifarASahinAZ,et al.Entropy generation during Al2O3/water nanofluid flow in a solar collector: effects of tube roughness, nanoparticle size, and different thermophysical models. Int J Heat and Mass Transfer2014; 78: 64–75.
19.
MalekanMKhosraviASyriS. Heat transfer modeling of a parabolic trough solar collector with working fluid of Fe3O4 and CuO/therminol 66 nanofluids under magnetic field. Appl Therm Eng2019; 163: 114435.
20.
BozorgMVDoranehgardMHHongK,et al.CFD Study of heat transfer and fluid flow in a parabolic trough solar receiver with internal annular porous structure and synthetic oil Al2O3 nanofluid. Renew Energ2020; 145: 2598–2614.
21.
ParlamısHOzdenEBukerMS. Experimental performance analysis of a parabolic trough solar air collector with helical-screw tape insert: a comparative study. Sustain Energy Technol Assess2021; 47: 101562.
22.
ChakrabortyORoySDasB,et al.Effects of helical absorber tube on the energy and exergy analysis of parabolic solar trough collector – a computational analysis. Sustain Energy Technol Assess2021; 44: 101083.
23.
RezaeianMDehajMSMohiabadiMZ,et al.Experimental investigation into a parabolic solar collector with direct flow evacuated tube. Appl Therm Eng2021; 189: 116608.
24.
NorouziAMSiavashiMOskoueiMHK. Efficiency enhancement of the parabolic trough solar collector using the rotating absorber tube and nanoparticles. Renew Energ2020; 145: 569–584.
25.
BezaatpourMRostamzadehHBezaatpourJ. Hybridization of rotary absorber tube and magnetic field inducer with nanofluid for performance enhancement of parabolic trough solar collector. Renew Energ2021; 168: 734–749.
26.
MehdiMSBozorgVToosiMH. A numerical analysis of the effects of nanofluid and porous media utilization on the performance of parabolic trough solar collectors. Sustain Energy Technol Assess2021; 45: 101179.
27.
AlnaqiAAAlsarrafJAl-RashedAAAA. Hydrothermal effects of using two twisted tape inserts in a parabolic trough solar collector filled with MgO-MWCNT/thermal oil hybrid nanofluid. Sustain Energy Technol Assess2021; 47: 101331.
28.
RaheemASiddiqueWZaryabH,et al.Performance evaluation of adding helical-screw tape inserts in parabolic solar trough collectors as a source of cleaner energy production. J Cleaner Prod2021; 297: 126628.
29.
MishraISenapatiPPandeyM. Numerical simulation of solar parabolic trough collector with helical grooves using Cu nanoparticles. Mater Today: Proc2022; 74: 867–873. https://doi.org/10.1016/j.matpr.2022.11.272
30.
FattahiA. Numerical simulation of a solar collector equipped with a twisted tape and containing a hybrid nanofluid. Sustain Energy Technol Assess2021; 45: 101200.
31.
ZaboliMAjarostaghiSSMSaedodinS,et al.Hybrid nanofluid flow and heat transfer in a parabolic trough solar collector with inner helical axial fins as turbulator. Eur Phys J Plus2021; 136: 841.
32.
ChakrabortyODasBGuptaR. Performance of parabolic trough collector having rotating receiver: effect of elliptical insert and hybrid nanofluid. Int J Energy Res2022; 46: 15254–15275.
33.
BeharOKhellafAMohammediK. A novel parabolic trough solar collector model – validation with experimental data and comparison to Engineering Equation Solver (EES). Energy Convers Manage2015; 106: 268–281.
34.
MwesigyeAMeyerJP. Optimal thermal and thermodynamic performance of a solar parabolic trough receiver with different nanofluids and at different concentration ratios. Appl Energy2017; 193: 393–413.
35.
BellosETzivanidisC. Parametric investigation of nanofluids utilization in parabolic trough collectors. Therm Sci Eng Prog2017; 2: 71–79.
36.
ZhouSQNiR. Measurement of the specific heat capacity of water-based Al2O3nanofluid. Appl Phys Lett2008; 92: 093123.
37.
LiPZhangDXieY. Heat transfer and flow analysis of Al2O3–water nanofluids in microchannel with dimple and protrusion. Int J Heat Mass Transfer2014; 73: 456–467.
38.
MineaAAEl-MaghlanyWM. Influence of hybrid nanofluids on the performance of parabolic trough collectors in solar thermal systems: recent findings and numerical comparison. Renew Energ2018; 120: 350–364.
39.
CengelYAGhajarAJ. Heat and mass transfer: fundamentals & applications. 4th ed. New York: McGraw-Hill, 2011.
40.
MwesigyeABello-OchendeTMeyerJP. Heat transfer and thermodynamic performance of a parabolic trough receiver with centrally placed perforated plate inserts. Appl Energy2014; 136: 989–1003.
41.
PetukhovBS. Heat transfer and friction in turbulent pipe flow with variable physical properties. Adv Heat Transf1970; 6: 504–565.
42.
SureshSSelvakumarPChandrasekarM,et al.Experimental studies on heat transfer and friction factor characteristics of Al2O3/water nanofluid under turbulent flow with spiraled rod inserts. Chem Eng Process2012; 53: 24–30.
