THERMAL SCIENCE

International Scientific Journal

İbrahim Sancar

,

Hüsamettin BulutORCID

EXPERIMENTAL AND NUMERICAL ANALYSIS OF JET IMPINGEMENT SOLAR AIR COLLECTOR USING CIRCULAR TAPERED NOZZLE

ABSTRACT
Solar air collectors are main elements used in many thermal solar energy applications such as drying agriculture products and space heating. In this study, an experimental and CFD analysis was carried out on a jet impact plate solar air collector using a conical circular nozzle and the findings were compared with a flat absorber plate solar air collector. The experiments and CFD analysis were carried out for 3 and 4 cm distance between the glass surface and the absorber plate at different air flow rates. The results of CFD analysis are compared with that of experimental results. It was seen from experimental and numerical analysis that the thermal efficiency of jet impingement plate solar air collector using a conical circular nozzle is approximately 6.7% greater than the flat absorber plate solar air collector. The results show that jet impingement flow with conical tapered nozzles enhances heat transfer in solar air collector and therefore improves thermal efficiency and outlet temperature. It has also been observed that the distance between the glass cover and the absorber plate affects the thermal performance of the solar air collector. Furthermore, it was seen that the collector must be designed to avoid dead zones and maintain airflow for jet effect. It is thought that the findings will be useful for academic researchers and such performance-enhanced air collectors can be used in diverse industrial applications.
KEYWORDS
jet impingement, Circular tapered nozzle, Solar air collector, thermal efficiency, CFD
PAPER SUBMITTED: 2025-12-26
PAPER REVISED: 2026-02-08
PAPER ACCEPTED: 2026-02-11
PUBLISHED ONLINE: 2026-03-07
DOI REFERENCE: https://doi.org/10.2298/TSCI251226027S
REFERENCES
[1] Williams J. R., Design and installation of solar heating and hot water systems, Am. Arbor Sci., 1982, 187
[2] Elbreki A. M., Alghoul M. A., Al-Shamani A. N., Ammar A. A., Yegani B., Aboghrara A. M. and Sopian K, The role of climatic-design-operational parameters on combined PV/T collector performance. A critical review. Renew. Sustain. Energy Rev., 57, (2016), 602-647, 10.1016/j.rser.2015.11.077
[3] Prasad K. and Mullick S. C., Heat transfer characteristics of a solar air heater used for drying purposes, Appl. Energy, 13(2), (1983) 83-93, 10.1016/0306-2619(83)90001-6
[4] Han J. C., Heat transfer and friction in channels with two opposite rib-roughened walls, ASME J. Heat Transfer, 106, (1984), 774-781, 10.1115/1.3246751
[5] Singh S., Chander S. and Saini J. S., Heat transfer and friction factor of discrete V-down rib roughened solar air heater ducts, J. Renew. Sustain. Energy, 3(1), (2011), 013108, 10.1063/1.3558865
[6] Rajaseenivasan T., Prasanth S. R., Antony M. S., Srithar K., Rajaseenivasan T., Prasanth S. R., Antony M. S. and Srithar K., Experimental investigation on the performance of an impinging jet solar air heater, Alexandria Eng. J., 56(1), (2017), 63-69, 10.1016/j.aej.2016.09.004
[7] Kercher D. M. and Tabakoff W., Heat transfer by a square array of round air jets impinging perpendicular to a flat surface including the effect of spent air, J. Eng. Power, 92(1), (1970), 73-82, 10.1115/1.3445306
[8] Metzger D. E., Florschuetz L. W., Takeuchi D. I., Behee R. D. and Berry R. A., Heat transfer characteristics for inline and staggered arrays of circular jets with crossflow of spent air, J. Heat Transf., 101 (3), (1979), 526-531, 10.1115/1.3451022
[9] Choudhury C. and Garg H. P., Evaluation of a jet plate solar air heater, Sol. Energy, 46(4), (1991), 199-209, 10.1016/0038-092X(91)90064-4
[10] Gao L., Ekkad S. V. and Bunker R. S. Impingement Heat Transfer Part I: Linearly Stretched Arrays of Holes, J. Thermophys. Heat Transfer, 19(1), (2005), 57-65, 10.2514/1.8551
[11] Hebert R., Ekkad S. V., Gao L. and Bunker R. S., Impingement heat transfer, Part II: Effect of streamwise pressure gradient, J. Thermophys. Heat Transfer, 19(1), (2005), 66-71, 10.2514/1.8588
[12] Belusko M., Saman W. and Bruno F., Performance of jet impingement in unglazed air collectors, Sol. Energy, 82(5), (2008), 389-398, 10.1016/j.solener.2007.10.005
[13] Xing Y., Spring S. and Weigand B., Experimental and numerical investigation of heat transfer characteristics of inline and staggered arrays of impinging jets, J. Heat Transfer, ASME 132, (2010), 092201, 10.1115/1.4001633
[14] Chauhan R. and Thakur N. S., Heat transfer and friction factor correlations for impinging jet solar air heater, Exp. Therm. Fluid Sci. , 44, (2013), 760-767, 10.1016/j.expthermflusci.2012.09.019
[15] Fadhil A. M., Jalil J. M. and Bilal G. A., Experimental and numerical investigation of solar air collector with phase change material in column obstruction, J. Energy Storage, 79, (2024), 110066, 10.1016/j.est.2023.110066
[16] Luo L., Wen F., Wang L., Sundén B. and Wang S., On the solar receiver thermal enhancement by using the dimple combined with delta winglet vortex generator, Appl. Therm. Eng., 111, (2017), 586-598, 10.1016/j.applthermaleng.2016.09.096
[17] Kumar S. and Saini R. P., CFD based performance analysis of a solar air heater duct provided with artificial roughness, Renewable Energy, 34(5), (2009), 1285-1291, 10.1016/j.renene.2008.09.015
[18] Karmare S. V. and Tikekar A. N., Analysis of fluid flow and heat transfer in a rib grit roughened surface solar air heater using CFD , Sol. Energy, 84(3), (2010), 409-417, 10.1016/j.solener.2009.12.011
[19] Boulemtafes-Boukadoum A. and Benzaoui A. J. E. P., CFD based analysis of heat transfer enhancement in solar air heater provided with transverse rectangular ribs, Energy Procedia, 50, (2014), 761-772, 10.1016/j.egypro.2014.06.094
[20] Singh S., Singh B., Hans V. S. and Gill R. S., CFD (computational fluid dynamics) investigation on Nusselt number and friction factor of solar air heater duct roughened with non-uniform cross-section transverse rib, Energy, 84, (2015), 509-517, 10.1016/j.energy.2015.03.015
[21] Gawande V B, Dhoble A S, Zodpe D B and Chamoli S (2016) Experimental and CFD-based thermal performance prediction of solar air heater provided with right-angle triangular rib as artificial roughness, J. Braz. Soc. Mech. Sci. Eng., 38(2), 551-579, 10.1007/s40430-015-0391-8
[22] Gawande V. B., Dhoble A. S., Zodpe D. B. and Chamoli S., Experimental and CFD investigation of convection heat transfer in solar air heater with reverse L-shaped ribs, Sol. Energy, 131, (2016), 275-295, 10.1016/j.solener.2016.02.040
[23] Gupta A. D. and Varshney L. J. T. S., Performance prediction for solar air heater having rectangular sectioned tapered rib roughness using CFD, Therm. Sci. Eng. Prog., 4, (2017), 122-132, 10.1016/j.tsep.2017.09.005
[24] Singh A. and Singh S., CFD investigation on roughness pitch variation in non-uniform cross-section transverse rib roughness on Nusselt number and friction factor characteristics of solar air heater duct, Energy, 128, (2017), 109-127, 10.1016/j.energy.2017.04.008
[25] Thakur D. S., Khan M. K. and Pathak M., Performance evaluation of solar air heater with novel hyperbolic rib geometry , Renewable Energy, 105, (2017), 786-797, 10.1016/j.renene.2016.12.092
[26] Chaube A., Sahoo P. K. and Solanki S. C., Analysis of heat transfer augmentation and flow characteristics due to rib roughness over absorber plate of a solar air heater, Renewable Energy, 31(3), (2006), 317-331, 10.1016/j.renene.2005.01.012
[27] Ishak M. A. A. B., Ibrahim A., Sopian K., Fauzan M. F., Rahmat M. A. A. and Abd. Hamid A. S., Classification of jet impingement solar collectors—a recent development in solar energy technology, Int. J. Renew. Energy Res., 13(2), (2023), 802-817
[28] Boulemtafes-Boukadoum A., Abid C. and Benzaoui A., 3D Numerical study of the effect of aspect ratio on mixed convection air flow in upward solar air heater, Int. J. Heat Fluid Flow, 84, (2020), 108570, 10.1016/j.ijheatfluidflow.2020.108570
[29] Das S., Biswas A. and Das B., Parametric investigation on the thermo-hydraulic performance of a novel solar air heater design with conical protruded nozzle jet impingement, Appl. Therm. Eng., 219, (2023), 119583, 10.1016/j.applthermaleng.2022.119583
[30] Kumar A., Kumar N., Kumar S. and Maithani R., Exergetic efficiency analysis of impingement jets integrated with internal conical ring roughened solar heat collector, Exp. Heat Transf., 36(1), (2021), 75-95, 10.1080/08916152.2021.2002466
[31] Salman M., Chauhan R., Poongavanam G. K. and Kim S. C., Analytical investigation of jet impingement solar air heater with dimple-roughened absorber surface via thermal and effective analysis, Renewable Energy, 199, (2022), 1248-1257, 10.1016/j.renene.2022.09.092
[32] Alomar O. R., Abd H. M. and Salih M. M. M., Efficiency enhancement of solar air heater collector by modifying jet impingement with v-corrugated absorber plate, J. Energy Storage, 55, (2022), 105535, 10.1016/j.est.2022.105535
[33] Jasyal N. K., Sharma S. L. and Debbarma A., Performance analysis of solar air heater using triangular corrugated absorber under jet impingement. Energy Sources, Part A: Recovery, Util., Environ. Eff., 45(3), (2023), 9063-9080, 10.1080/15567036.2023.2230932
[34] Pal J., Singal S. K. and Goel V., Heat transfer and fluid flow analysis of a solar air heater using conical jet impingement with sine-wave corrugation on absorber plate, Appl. Therm. Eng., 258, (2025), 124595, 10.1016/j.applthermaleng.2024.124595
[35] Afridi M. I., Samarmad A. O., Ali M., Rashid F. L., Kadhim S. A., Jasim A. K., Nayyef D. R., Barrak E. S., Aryanfar Y., Hammoodi K. A. and Karouei S. H. H., Numerical Investigation on the 19 Performance of the Solar Air Collector Using Jet Impingement with W-shaped Arrangement, Case Stud. Therm. Eng., 71, (2025),106154, 10.1016/j.csite.2025.106154
[36] Juneja P., Singh S. and Kumar P., Experimental thermal performance investigation of a novel jet impinging solar air heater , Appl. Therm. Eng. , 274, (2025), 126609, 10.1016/j.applthermaleng.2025.126609
[37] Mahato M. K. and Singh S. N., Experimental study of thermal and hydraulic performance of multi-pass jet impingement solar air heater, Renewable Energy, 249, (2025), 12310, 10.1016/j.renene.2025.123106
[38] Sharma A., Thakur S., Dhiman P. and Deshta A., Augmentation of heat transmission in solar collectors with jet impingement: a review, Int. J. Ambient Energy, 46(1), (2025), 2495816, 10.1080/01430750.2025.2495816
[39] Srivastav A., Maithani R. and Sharma S., Parametric optimization of solar air heater with submerged impinging jet array , Exp. Heat Transf. , (2025), 1-29, 10.1080/08916152.2025.2464566
[40] Wang Y., Ma J., Zhuang P., Zhao X. and Xiao Q., Multi-objective optimization design of solar air collector with a frustum-shaped protrusion, Sol. Energy, 267, (2024), 112121, 10.1016/j.solener.2023.112121
[41] Kumar Goel, A., Singh, S. N. and Prasad, B. N., Experimental investigation of thermo-hydraulic efficiency and performance characteristics of an impinging jet-finned type solar air heater, Sustainable Energy Technologies and Assessments, 52 , (2022), 102165, 10.1016/j.seta.2022.102165
[42] Maithani, R., Agarwal, R., Kumar, A. and Sharma, S., Parametric optimization of impinging air jet on hemispherical protrusion of a solar thermal collector, Experimental Heat Transfer, 36(6), (2023), 786-807, 10.1080/08916152.2022.2075989
[43] Yadav, S., Singal, S. K. and Pandey, K. M., Correlation development and performance optimization of a impinging jet solar air collector, Applied Thermal Engineering, (2025), 128777, 10.1016/j.applthermaleng.2025.128777
[44] Sancar İ., Bulut H. and Karadağ R., Experimental and numerical analysis of jet impinging solar air collector with hemispherical ribs and circular tapered nozzle, Adiyaman University J. Eng. Sciences, 11(23), (2024), 333-352, 10.54365/adyumbd.1490486
[45] Chauhan, R., Singh, T., Thakur, N. S. and Patnaik, A., Optimization of parameters in a solar thermal collector provided with impinging air jets based on the preference selection index method. Renewable Energy, 99, (2016), 118-126, 10.1016/j.renene.2016.06.046
[46] Matheswaran, M. M., Arjunan, T. V., Muthusamy, S., Natrayan, L., Panchal, H., Subramaniam, S., Khedkar, N. K., El-Shafay, A. S. and Sonawane, C., A case study on thermo-hydraulic performance of jet plate solar air heater using response surface methodology, Case Stud. Therm. Eng. 34 (2022), 101983, 10.1016/j.csite.2022.101983
[47] Elwekeel, F. N., Nasr, A. A. E., Radwan, M. I. and Aly, W. I., Influence of impingement jet designs on solar air collector performance. Renewable Energy, 221, (2024), 119757, 10.1016/j.renene.2023.119757
[48] Hottel, H. C. and Woertz, B. B., Performance of flat-plate solar heat collectors. Transactions of the ASME, 64, (1942), 91-104
[49] Waksman, D. D., Streed, E. and Seller, J., Solar collector durability/reliability test program plan (NBS Technical Note No. 1136), U.S. Department of Commerce, National Bureau of Standards, (1974)
[50] American Society of Heating, Refrigerating and Air-Conditioning Engineers, Methods of testing to determine the thermal performance of solar collectors (ASHRAE Standard No. 93-77), ASHRAE, (1977)
[51] Holman J. P., Experimental methods for engineers, 8th ed. McGraw-Hill Companies, New York
[52] Aboghrara A. M., Baharudin B. T. H. T., Alghoul M. A., Adam N. M., Hairuddin A. A. and Hasan H. A., Performance analysis of solar air heater with jet impingement on corrugated absorber plate, Case Stud. Therm. Eng., 10, (2017), 111-120, 10.1016/j.csite.2017.04.002
[53] Gao W., Lin W., Liu T. and Xia C., Analytical and experimental studies on the thermal performance of cross-corrugated and flat-plate solar air heaters, Appl. Energy, 84(4), (2007), 425-441, 10.1016/j.apenergy.2006.02.005
[54] Mcadams W. H. and Mcadams W. H., Heat transmission (Vol. 3). McGraw-Hill. Companies, New York
[55] Zhai X. Q., Dai Y. J. and Wang R. Z., Comparison of heating and natural ventilation in a solar house induced by two roof solar collectors, Appl. Therm. Eng, 25(5-6), (2005), 741-757, 10.1016/j.applthermaleng.2004.08.001
[56] Swinbank W. C., Long‐wave radiation from clear skies, Q. J. R. Meteorological Society, 89(381), (1963), 339-348, 10.1002/qj.49708938105
[57] Salman, M., Park, M. H., Chauhan, R. and Kim, S. C., Experimental analysis of single loop solar heat collector with jet impingement over indented dimples, Renewable Energy, 169, (2021), 618-628, 10.1016/j.renene.2021.01.043
[58] Das, S., Biswas, A. and Das, B., Energy and exergy analysis of a solar-thermal air collector design utilizing a novel jet impingement technique: an experimental study, Journal of Thermal Analysis and Calorimetry, 148(19), (2023), 10301-10318, 10.1007/s10973-023-12398-5
[59] Harikrishnan, M., Kumar, R. A., Baby, R., Percy, D. and Kumar, S. A., Exergetic performance assessment of a downward solar air heater with impinging air jets: An experimental study, Case Studies in Thermal Engineering, 55, (2024), 104104, 10.1016/j.csite.2024.104104
[60] Versteeg H. K., An introduction to computational fluid dynamics the finite volume method, 2/E. Pearson Education India, 2007
[61] Bhamjee M., Nurick A. and Madyira D. M., An experimentally validated mathematical and CFD model of a supply air window: Forced and natural flow, Energy Build., 57, (2013), 289-301, 10.1016/j.enbuild.2012.10.043
[62] Dabiri S., Khodabandeh E., Poorfar A. K., Mashayekhi R., Toghraie D. and Zade S.A.A., Parametric investigation of thermal characteristic in trapezoidal cavity receiver for a linear Fresnel solar collector concentrator , Energy, 153, (2018), 17-26, 10.1016/j.energy.2018.04.025
[63] Shekaramiz M., Fathi S., Ataabadi H. A., Kazemi-Varnamkhasti H. and Toghraie D., MHD nanofluid free convection inside the wavy triangular cavity considering periodic temperature boundary condition and velocity slip mechanisms, Int. J. Therm. Sci., 170, (2021), 107179, 10.1016/j.ijthermalsci.2021.107179
[64] Hedau A. and Saini R. P., Thermo-hydraulic performance of double pass solar air heater duct having semi-circular tubes and perforated blocks as artificial roughness, Renewable Energy, 205, (2023), 543-562, 10.1016/j.renene.2023.01.087
[65] Tobergte D.R. and Curtis, S., Detection, Estimation, and Modulation Theory. Journal of Chemical Information and Modeling, 53, (2013), 1689-1699
[66] Ashja, M., Sheikhzadeh, G. A., Fattahi, A. and Hajialigol, N., Investigation of performance improvement in a solar air heater equipped with impinging jets: A three-dimensional numerical simulation, Sustainable Energy and Artificial Intelligence, 1(1), (2025), 51-66, 10.61186/seai.2410-1013
[67] Chaurasiya, S. K. and Singh, S., Heat transfer and fluid dynamics study in a solar air heater employing an impinging circular air jet array for effective jet stability, Journal of Heat and Mass Transfer, 145(1), (2023), 012901, 10.1115/1.4056004
[68] Hai, T., Mansir, I. B., Alshuraiaan, B., Abed, A. M., Ali, H. E., Dahari, M. and Albalawi, H., Numerical investigation on the performance of a solar air heater using inclined impinging jets on an absorber plate with parallel and crossing orientation of nozzles, Case Studies in Thermal Engineering, 45, (2023), 102913, 10.1016/j.csite.2023.102913
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Experimental and numerical analysis of jet impingement solar air collector using circular tapered nozzle

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