Document Type : Research Paper

Authors

Mechanical Engineering Department, College of Engineering, Al-Mustansiriyah University, Baghdad, Iraq

10.30772/qjes.2023.180350

Abstract

Space and weight constraints, as well as the time lag between energy generation and consumption, ‎are major obstacles to expanding solar water heating systems into existing structures with limited ‎space. It is possible to collect heat with this small, evacuated tube collector (ETC). It was found ‎that the air inside the glass tube has poor thermal conductivity. An experimental and numerical ‎study was performed on an evacuated tube solar collector, incorporating a heat tube with ‎cylindrical fins to increase the contact surface between the air and the fin surface. Statistical ‎analysis software is used to verify the results in practice. The temperature data was investigated ‎using SPSS under the same flow conditions. These figures are from experiments examining the ‎effect of variable volumetric flow rate, boost type, and variance analysis on temperature ‎distribution. When analyzing the results of the trials, a significant threshold of 95% was used. ‎Therefore, we compare the calculated significance to a value of 0.05 to evaluate the efficacy and ‎capabilities of the components. The reliability and validity of the model depend on the presence of ‎two components. If the resulting value is less than the significance level (0.05), then the model can ‎be considered robust and efficient (flow rate and optimization type). If the estimated value is ‎greater than that, the variables do not affect system performance. Flow rate and type of ‎enhancement are the two factors considered in the analysis of variance.

Keywords

  • Ž. Jesko, L. Kanceviča, I. Ziemelis, Comparison of Solar ‎Collectors and Conventional Technologies Used for Water ‎Heating in Latvia, Engineering for Rural Development ‎University of Agriculture Faculty of Engineering, 24 (2007) 35-40.
  • J.A. Duffie, W.A. Beckman, Solar Engineering of Thermal Processes, Fourth Edition, John Wiley & Sons, Inc., Hoboken, New Jersey, 2013. DOI: https://doi.org/10.1002/9781118671603
  • S. Kalogirou, The potential of solar industrial process heat applications. Applied Energy, 76(4) (2003) 337–361. DOI: https://doi.org/10.1016/S0306-2619(02)00176-9.
  • K.B. Deshmukh, S.V. Karmare, A Review on Augmentation of Convective Heat Transfer Techniques in Solar ‎Water Heating, Journal of Thermal Energy ‎Systems, 4(3)‎ (2019) 29-40. DOI: https://doi.org/10.5281/zenodo.3542729
  • D.Y. Goswami, F. Kreith, Energy Conversion, Second Edition. ed., CRC Press, Boca Raton, 2017. DOI: https://doi.org/10.1201/9781315374192
  • N. Mirzaei, Solar Collector Performance Analysis ‎Using ANOVA Method, Transactions of ‎FAMENA, 45(4) (2021) 29-41.‎‏ DOI: https://doi.org/10.21278/TOF.454029621
  • M.H. Abokersh, M. El-Morsi, O. Sharaf, W. Abdelrahman, On-Demand Operation of a Compact Solar Water Heater Based on U-pipe Evacuated Tube Solar Collector Combined with Phase Change Material, Solar Energy, 155, 1130–1147.DOI: https://doi.org/10.1016/j.solener.2017.07.008
  • X. Chen, X. Yang, Heat Transfer Enhancement for U-Pipe Evacuated Tube Solar Absorber by High-Emissivity Coating on Metal Fin. Journal of Building Engineering, 50, 104213. DOI: https://doi.org/10.1016/j.jobe.2022.104213
  • A.A. Ghoneim, Optimization of Evacuated Tube Collector ‎Parameters for Solar Industrial Process Heat. International Journal of Energy and Environmental Research, 5(2) (2017) 55-73‎. Avaiable online
  • M.S. Abd-Elhady, Z. Serag, H.A. Kandil, An Innovative Solution to the Overheating Problem of PV Panels, Energy Conversion & Management, 157 (2018) 452–459. DOI: https://doi.org/10.1016/j.enconman.2017.12.017
  • R. Supankanok, S. Sriwong, P. Ponpo, W. Wu, W. Chandra-Ambhorn, A. Anantpinijwatna, Modification of a Solar Thermal Collector to ‎Promote Heat Transfer Inside an Evacuated Tube Solar Thermal Absorber, Applied Sciences, 11(9) (2021) 4100. DOI: https://doi.org/10.3390/app11094100
  • Z.A Zakaria, Z.A.A. Majid, M.A. Harun, A.F. Ismail, S.I. Ihsan, K. Sopian, ‎A.A. Razak, A.F. Sharol, Experimental Investigation of Integrated Energy Storage on Thermal Performance Enhancement of Evacuated Glass-Thermal Absorber Tube Collector (EGATC) for Air Heating Application, Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 96(1) (2022) 137–152. DOI:  https://doi.org/10.37934/arfmts.96.1.137152
  • J. Shi, H. Xue, Z. Chen, L. Sun, Numerical Study of a New Solar Vacuum Tube Integrating with Phase Change Material, Sustainability, 11(24) (2019) 6960. DOI: https://doi.org/10.3390/su11246960
  • H. Wang, Y. Jiang, X. Zhang, S. Pang, Y. Mei, Numerical Analysis of Effect of Phase Change Thermal Storage Layer and Annular Fins on Thermal Performance of Linear Concentrating Solar Evacuated Tubular ‎Collector, IOP Conference Series: Earth and Environmental Science, 615(1), 012068. DOI: https://doi.org/10.1088/1755-1315/615/1/012068
  • M.H. Dhaou, S. Mellouli, F. Alresheedi, Y. El-Ghoul, Numerical Assessment of an ‎Innovative Design of an Evacuated Tube Solar Collector Incorporated with PCM ‎Embedded Metal Foam/Plate Fins, Sustainability, 13(19) (2021), 10632. DOI: https://doi.org/10.3390/su131910632
  • R.A. Radhi, Investigation of Creep Properties ‎for Hybirdized Nano Composites Under Different Boundary ‎Conditions with Statistical Analysis, M.Sc. thesis, Mustansiriayah University, Baghdad, Iraq, 2020.
  • Aung Pyae, Quick calculation of Two-Way and One-‎Way ANOVA (Experiment finding paper) Experiment ‎Findings, ‎138 Available-online. ‎https://www.researchgate.net/publication/333951232,2019‎.