Document Type : Original Article
Authors
1 Mechanical Engineering Department, Faculty of Engineering, Higher Education Complex of Bam, 76615-314, Bam, Iran
2 Mechanical Engineering Department, Sirjan University of Technology, 78137-33385, Sirjan, Iran
Abstract
Solar air heaters (SAHs) have an inherent drawback: the conventional mechanism is low inside these collectors’ types. Use of perforations is a simple technique to improve convection, and this investigation experimentally assesses a novel design SAH utilizing three inclined perforated absorber plates. Two scenarios are considered to assess the dynamics and efficiency of this perforated SAH, including mair = 0.012 kg/s and 0.024 kg/s. Numerous sensors monitored the dynamics of the perforated SAH and ambient factors for 12 hours in October 2022. The experimental outcomes illustrate that the perforation method remarkably enhances the thermal efficiency of the perforated SAH compared with standard smooth SAHs. The daily thermal efficiency of the perforated SAH reaches 73.30% and 82.65%, while the outlet air temperature experiences peak values of 39 oC and 42 oC at noon and keeps within 90% of its maximum value for 2 hours for the scenarios considered. Improving the convection mechanism causes the flowing air to extract the absorber’s thermal energy more effectively. Hence the SAH can produce an airstream near its maximum temperature for an extended duration. In conclusion, the perforation method is a robust, simple method to boost the thermal efficiency of SAHs.
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- Farzan, H., 2019. The study of thermostat impact on energy consumption in a residential building by using TRNSYS, Journal of Renewable Energy and Environment, 6(1), pp. 15-20. Doi: 10.30501/jree.2019.95531
- Singh, V. P., Jain, S., Karn, A., Kumar, A., Dwivedi, G., Meena, C. S., Dutt, N. and Ghosh, A., 2022. Recent developments and advancements in solar air heaters: a detailed review, Sustainability, 14(19), pp. 12149. Doi: 10.3390/su141912149
- Ameri, M., Farzan, H. and Nobari, M., 2021. Evaluation of different glazing materials, strategies, and configurations in flat plate collectors using glass and acrylic covers: An experimental assessment, Iranian (Iranica) Journal of Energy & Environment, 12(4), pp. 297-306. Doi: 10.5829/ijee.2021.12.04.03
- Kabeel, A. E., Hamed, M. H., Omara, Z. and Kandeal, A., 2017. Solar air heaters: Design configurations, improvement methods and applications–A detailed review, Renewable and Sustainable Energy Reviews, 70, pp. 1189-1206. Doi: 10.1016/j.rser.2016.12.021
- Arunkumar, H., Karanth, K. V. and Kumar, S., 2020. Review on the design modifications of a solar air heater for improvement in the thermal performance, Sustainable Energy Technologies and Assessments, 39, pp. 100685. Doi: 10.1016/j.seta.2020.100685
- Saravanan, A., Murugan, M., Reddy, M. S., Ranjit, P., Elumalai, P., Kumar, P. and Sree, S. R., 2021. Thermo-hydraulic performance of a solar air heater with staggered C-shape finned absorber plate, International Journal of Thermal Sciences, 168, pp. 107068. Doi: 10.1016/j.ijthermalsci.2021.107068
- Singh, V. P., Jain, S. and Gupta, J., 2022. Performance assessment of double-pass parallel flow solar air heater with perforated multi-V ribs roughness—Part B, Experimental Heat Transfer, 35(7), pp. 1-18. Doi: 10.1080/08916152.2021.2019147
- Singh, V. P., Jain, S. and Gupta, J., 2022. Analysis of the effect of variation in open area ratio in perforated multi-V rib roughened single pass solar air heater-Part A, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, pp. 1-21. Doi: 10.1080/15567036.2022.2029976
- Vaziri, R., İlkan, M. and Egelioglu, F., 2015. Experimental performance of perforated glazed solar air heaters and unglazed transpired solar air heater, Solar Energy, 119, pp. 251-260. Doi: 10.1016/j.solener.2015.06.043
- Skullong, S., Promthaisong, P., Promvonge, P., Thianpong, C. and Pimsarn, M., 2018. Thermal performance in solar air heater with perforated-winglet-type vortex generator, Solar Energy, 170, pp. 1101-1117. Doi: 10.1016/j.solener.2018.05.093
- Faujdar, S. and Agrawal, M., 2021. Computational fluid dynamics based numerical study to determine the performance of triangular solar air heater duct having perforated baffles in V-down pattern mounted underneath absorber plate, Solar Energy, 228, pp. 235-252. Doi: 10.1016/j.solener.2021.09.006
- Jain, S. K., Misra, R., Kumar, A. and Agrawal, G. D., 2022. Thermal performance investigation of a solar air heater having discrete V-shaped perforated baffles, International Journal of Ambient Energy, 43(1), pp. 243-251. Doi: 10.1080/01430750.2019.1636874
- Hassan, H., Yousef, M. S. and Abo-Elfadl, S., 2021. Energy, exergy, economic and environmental assessment of double pass V-corrugated-perforated finned solar air heater at different air mass ratios, Sustainable Energy Technologies and Assessments, 43, pp. 100936. Doi: 10.1016/j.seta.2020.100936
- Pandey, R. and Kumar, M., 2021. Efficiencies assessment of an indoor designed solar air heater characterized by V baffle blocks having staggered racetrack-shaped perforation geometry, Sustainable Energy Technologies and Assessments, 47, pp. 101362. Doi: 10.1080/15435075.2022.2083916
- Khanlari, A., Tuncer, A. D., Sözen, A., Aytaç, İ., Çiftçi, E. and Variyenli, H. İ., 2022. Energy and exergy analysis of a vertical solar air heater with nano-enhanced absorber coating and perforated baffles, Renewable Energy, 187, pp. 586-602. Doi: 10.1016/j.renene.2022.01.074
- Tandel, H. U. and Modi, K. V., 2022. Experimental assessment of double-pass solar air heater by incorporating perforated baffles and solar water heating system, Renewable Energy, 183, pp. 385-405. Doi: 10.1016/j.renene.2021.10.087
- Dutta, P., Goswami, P., Sharma, A., Dutta, P. P. and Baruah, M., 2022. Computational Performance Analysis of the Perforated and Flat Plates Double Pass Solar Air Heaters, Advances in Thermofluids and Renewable Energy: Springer, pp. 549-561. Doi: 10.1007/978-981-16-3497-0_44
- Bhattacharyya, S., Pathak, M., Sharifpur, M., Chamoli, S. and Ewim, D. R., 2021. Heat transfer and exergy analysis of solar air heater tube with helical corrugation and perforated circular disc inserts, Journal of Thermal Analysis and Calorimetry, 145(3), pp. 1019-1034. Doi: 10.1007/s10973-020-10215-x
- Jasim Mahmood, A., 2020. Thermal evaluation of a double-pass unglazed solar air heater with perforated plate and wire mesh layers, Sustainability, 12(9), pp. 3619. Doi: 10.3390/su12093619
- Shetty, S. P., Nayak, S., Kumar, S. and Karanth, K. V., 2021. Thermo-hydraulic performance prediction of a solar air heater with circular perforated absorber plate using Artificial Neural Network, Thermal Science and Engineering Progress, 23, pp. 100886. Doi: 10.1016/j.tsep.2021.100886
- Shetty, S. P., Paineni, A., Kande, M., Madhwesh, N., Sharma, N. Y. and Karanth, K. V., 2020. Experimental investigations on a cross flow solar air heater having perforated circular absorber plate for thermal performance augmentation, Solar Energy, 197, pp. 254-265. Doi: 10.1016/j.solener.2020.01.005
- Arunkumar, H., Kumar, S. and Karanth, K. V., 2021. Experimental study on thermo-hydraulic performance of a solar air heater with rectangular perforated duct inserts, Solar Energy, 227, pp. 179-189. Doi: 0.1016/j.solener.2021.09.005
- Arunkumar, H., Kumar, S. and Karanth, K. V., 2022. Performance enhancement of a solar air heater using rectangular perforated duct inserts, Thermal Science and Engineering Progress, 34, pp. 101404. Doi: 10.1016/j.tsep.2022.101404
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