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Design and optimization of solar parabolic trough collector with evacuated absorber by grey relational analysis


Affiliations
1 Department of Mechanical Engineering, Government College of Technology, Coimbatore 641 013, India
 

Solar energy that contains bright heat and light from the sun is often controlled using modern technology such as photovoltaic, solar heating, artificial photosynthesis, solar architecture and solar thermal electricity. This study concerned with an experimental analysis of solar parabolic trough collector. The sunlight is reflected from the parabolic trough surface and focused on the evacuated absorber tube. The trough is usually aligned to the N–S axis and can be rotated normally according to the sun position from east to west. We have studied the potential of a solar thermal system for hot-water generation. The parabolic trough concentrator was made of galvanized sheet metal on which solar reflective films were pasted. The heat transfer fluid, viz. water runs through the absorber tube and absorbs concentrated heat energy. It has been designed with principal focus 0.1 m from the vertex so that the receiver heat loss is minimized. Data were collected on water inlet temperature, outlet temperature of the heat transfer fluid, solar radiation and water flow rate (days) during March to May 2019 at Coimbatore, Tamil Nadu, India. Also, the processing parameters were optimized because they are the key factors affecting the performance of the solar collector. Grey relational analysis was used to solve the optimization. Through confirmatory experiments, the input variables such as time, angle of tracking and solar radiation, as well as output variables such as inlet temperature, outlet temperature and efficiency were obtained, and the optimal conditions were verified. A suitable choice of input parameters such as tracking angle of 120° provides a high efficiency rate at 2 pm for March, April and May

Keywords

Evacuated absorber, grey relational analysis, parabolic trough collector, performance analysis, solar energy.
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  • Wang, Y., Liu, Q., Lei, J. and Jin, H., Performance analysis of a parabolic trough solar collector with non-uniform solar flux conditions. Int. J. Heat Mass Transfer, 2015, 82, 236–249.

  • Montes, I. E. P., Benitez, A. M., Chavez, O. M. and Herrera, A. E. L., Design and construction of a parabolic trough solar collector for process heat production. Energy Procedia, 2014, 57, 2149– 2158.

  • Gao, X.-H., Guo, Z.-M., Geng, Q.-F., Ma, P.-J., Wang, A.-Q. and Liu, G., Microstructure, chromaticity and thermal stability of SS/ TiC–WC/Al2O3 spectrally selective solar absorbers. Sol. Energy Mater. Sol. Cells, 2017, 164, 63–69.

  • Kalidasan, B., Shankar, R. and Srinivas, T., Absorber tube with internal hinged blades for solar parabolic trough collector. Energy Procedia, 2016, 90, 463–469.

  • Tagle, P. D., Agraz, A. and Rivera, C. I., Study of applications of parabolic trough solar collector technology in Mexican industry. Energy Procedia, 2016, 91, 661–667.

  • Agraz, A., Metodologia para la characterization optimizaction de un concentrator solar parabolic lineal monterrey. Master’s thesis, Engineering Science School, 2012.

  • Jebasingh, V. K. and Joselin Herbert, G. M., A review of solar parabolic trough collector. Renew. Sustain. Energy Rev., 2016, 54, 1085– 1091.

  • Luo, N., Yu, G., Hou, H. J. and Yang, Y. P., Dynamic modelling and simulation of parabolic trough solar system. Energy Procedia, 2015, 69, 1344–1348.

  • Rashidi, S., Esfahani, J. A. and Rashidi, A., A review on the applications of porous materials in solar energy systems. Renew. Sustain. Energy Rev., 2017, 73, 1198–1210.

  • Javadi, F., Saidur, A. R. and Kamalisarvestani, M., Investigating performance improvement of solar collectors by using nanofluids. Renew. Sustain. Energy Rev., 2013, 28, 232–245.

  • Suman, S., Khan, M. and Pathak, M., Performance enhancement of solar collectors – a review. Renew. Sustain. Energy Rev., 2015, 49, 192–210.

  • Ummadisingu, A. and Soni, M. S., Concentrating solar power– technology potential and policy in India. Renew. Sustain. Energy Rev., 2011, 15, 5169–5175.

  • Reddy, K. S. and Kumar, K. R., Energy for sustainable development solar collector field design and viability analysis of stand-alone parabolic trough power plants for Indian conditions. Energy – Sustain. Div., 2012, 16, 456–470.

  • Kumaresan, G., Sridhar, R. and Velraj, R., Performance studies of a solar parabolic trough collector with a thermal energy storage system. Energy, 2012, 47, 395–402.

  • Schweitzer, A., Schiel, W., Birkle, M., Nava, P., Riffelmann, K. and Wohlfahrt, A., Fabrication, erection and commissioning of the world’s largest parabolic trough collector. Energy Procedia, 2014, 49, 1848–1857.

  • Sagade, A., Aher, S. and Shinde, N., Performance evaluation of low-cost FRP parabolic trough reflector with mild steel receiver. Int. J. Energy Environ. Eng., 2013, 4, 5–11.

  • Jeffrey Kuo, C.-F., Su, T.-L., Jhang, P.-R., Huang, C.-Y. and Chiu, C.-H., Using the Taguchi method and grey relational analysis to optimize the flat-plate collector process with multiple quality characteristics in solar energy collector manufacturing. Energy, 2011, 36, 3554–3562.

  • Mohana Reddy, P., Venkataramaiah, P. and Sairam, P., Optimization of process parameters of a solar parabolic trough in winter using grey–Taguchi approach. Int. J. Res. Appl., 2012, 2, 816–821.

  • Sukhatme, S. P. and Nayak, J. K., Solar Energy, McGraw Hill Education, India, 2017, 4th edn.


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  • Design and optimization of solar parabolic trough collector with evacuated absorber by grey relational analysis

Abstract Views: 399  |  PDF Views: 131

Authors

S. Arunkumar
Department of Mechanical Engineering, Government College of Technology, Coimbatore 641 013, India
K. Ramesh
Department of Mechanical Engineering, Government College of Technology, Coimbatore 641 013, India

Abstract


Solar energy that contains bright heat and light from the sun is often controlled using modern technology such as photovoltaic, solar heating, artificial photosynthesis, solar architecture and solar thermal electricity. This study concerned with an experimental analysis of solar parabolic trough collector. The sunlight is reflected from the parabolic trough surface and focused on the evacuated absorber tube. The trough is usually aligned to the N–S axis and can be rotated normally according to the sun position from east to west. We have studied the potential of a solar thermal system for hot-water generation. The parabolic trough concentrator was made of galvanized sheet metal on which solar reflective films were pasted. The heat transfer fluid, viz. water runs through the absorber tube and absorbs concentrated heat energy. It has been designed with principal focus 0.1 m from the vertex so that the receiver heat loss is minimized. Data were collected on water inlet temperature, outlet temperature of the heat transfer fluid, solar radiation and water flow rate (days) during March to May 2019 at Coimbatore, Tamil Nadu, India. Also, the processing parameters were optimized because they are the key factors affecting the performance of the solar collector. Grey relational analysis was used to solve the optimization. Through confirmatory experiments, the input variables such as time, angle of tracking and solar radiation, as well as output variables such as inlet temperature, outlet temperature and efficiency were obtained, and the optimal conditions were verified. A suitable choice of input parameters such as tracking angle of 120° provides a high efficiency rate at 2 pm for March, April and May

Keywords


Evacuated absorber, grey relational analysis, parabolic trough collector, performance analysis, solar energy.

References





DOI: https://doi.org/10.18520/cs%2Fv122%2Fi4%2F410-418