Keywords:-
Keywords:
Parabolic trough solar collector, turbulent flow, twisted tape, swirl flow, heat transfer, pressure drop
Article Content:-
Abstract
Theoretical investigation on the thermal performance of a parabolic trough solar collector (PTSC) for a fixed water flow rate (0.04 kg/s) and theoretical investigation on heat transfer enhancement and pressure drop at the outlet of the absorber tube with the inserted twisted tape (TT) with twist ratio (Y) 3, 6, 10, 12 for the water flow rate 0.04-.11 kg/s were performed. The Reynolds number (Re) ranged from 3,100 to 9,600 and the swirl flow Reynolds number (Resw) is varied from 6,400 to12,300 respectively. The theoretical data of friction factor are validated with those published previously for the plain absorber tube. The values of Nusselt number (Nu) and friction factor (f) were observed much higher than those calculated from plain absorber tube one.
References:-
References
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9. Kumar, A. and Prasad, B.N. 2000. Investigation of twisted tape inserted solar water heaters heat transfer, friction factor and thermal performance results, Renewable Energy 19 (2000) 379–398.
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12. Bhakta, A. K., Panday, N. K. and Singh, S. N. 2018. Performance Study of a Cylindrical Parabolic concentrating Solar Water Heater with Nail Type Twisted Tape inserts in the absorber Tube, Energies 11 (1) 1–15.
13. Bhakta, A. K. and Singh, S. N. 2020. Thermo-hydraulic Performance Analysis of Parabolic concentrating Solar Water Heater. Journal of Thermal Engineering 6 (5) 802–815.
14. Iqbal, M. 1983. An Introduction to Solar Radiation, Academic Press, Canada.
15. Garg, H. P. and Prakash, J. 2005. Solar Energy Fundamentals and Applications, New Delhi, www. Tata McGraw-Hill.Com.
16. Hong, S. W. and Bergles, A. E. 1976. Augmentation of laminar flow heat transfer in tubes by means of twisted tape inserts, Journal of Heat Transfer, Trans. ASME, 98: 251.
17. Jain, A. K. 1976. Accurate explicit equation for friction factor, J. of Hyd. Div., ASCE: 674–677.
18. Date A. S. and Simgham, J. R.1972. Numerical prediction of friction and heat transfer characteristics of fully developed laminar flow in tubes containing twisted tapes. ASME, Paper12-HT–17.
19. Smithberg E, and Landies, F. 1964. Friction and forced convection heat transfer characteristics in tubes with twisted tape swirl generators. Journal of Heat Transfer, Transactions of ASME, 86: 39–49 Series C.
2. Eiamsa-ard, S., Wongcharee, K., Eiamsa-ard, P. and Thianpong, C. 2010. Heat transfer enhancement in a tube using delta-winglet twisted tape inserts. Applied Thermal Engineering 30, 310–318.
3. Eiamsa-ard, S, Thianpong, C, and Promvong, P. 2006. Experimental investigation of heat transfer and flow friction in a circular tube fitted with regularly spaced twisted tape elements. International Communications in Heat and Mass Transfer 33, 1225–1233.
4. Chang, S. W, Yang, T. L and Liou, J. S. 2007. Heat transfer and pressure drop in tube with broken twisted tape insert, Experimental Thermal and Fluid Science 32 (2007) 489–501.
5. Chang, S. W, Jan Y. J., and Liou, J. S. 2007. Turbulent heat transfer and pressure drop in tube fitted with serrated twisted tape, International Journal of Thermal Sciences 46, 506–518.
6. Manglik, R. M. and Bergles, A. E. 1993. Heat Transfer and Pressure Drop Correlations for Twisted-Tape Inserts in Isothermal Tubes: Part I – Laminar Flows, Journal of Heat Transfer 115, 881–889.
7. Al-Fahed, S., Chamra, L. M. and Chakroun, W. 1999. Pressure drop and heat transfer comparison for both microfin tube and twisted-tape inserts in laminar flow, Experimental Thermal and Fluid Science 18, 323–333.
8. Guo, J., Fan, A., Zhang, X. and Liu, W. 2011. A numerical study on heat transfer and friction factor characteristics of laminar flow in a circular tube fitted with center-cleared twisted tape. International Journal of Thermal Sciences 50, 1263–1270.
9. Kumar, A. and Prasad, B.N. 2000. Investigation of twisted tape inserted solar water heaters heat transfer, friction factor and thermal performance results, Renewable Energy 19 (2000) 379–398.
10. Seemawute, P. and Eiamsa-ard, S. 2010. Thermo-hydraulics of turbulent flow through a round tube by a peripherally-cut twisted tape with an alternate axis, International Communications in Heat and Mass Transfer 37, 652–659.
11. Bhakta, A. K., Kumar, B. and Singh, S. N. 2016. Investigation on Thermal Performance of a Cylindrical Parabolic concentrating Solar Water Heater, Indian Journal of Science and Technology 9 (48) 1–6.
12. Bhakta, A. K., Panday, N. K. and Singh, S. N. 2018. Performance Study of a Cylindrical Parabolic concentrating Solar Water Heater with Nail Type Twisted Tape inserts in the absorber Tube, Energies 11 (1) 1–15.
13. Bhakta, A. K. and Singh, S. N. 2020. Thermo-hydraulic Performance Analysis of Parabolic concentrating Solar Water Heater. Journal of Thermal Engineering 6 (5) 802–815.
14. Iqbal, M. 1983. An Introduction to Solar Radiation, Academic Press, Canada.
15. Garg, H. P. and Prakash, J. 2005. Solar Energy Fundamentals and Applications, New Delhi, www. Tata McGraw-Hill.Com.
16. Hong, S. W. and Bergles, A. E. 1976. Augmentation of laminar flow heat transfer in tubes by means of twisted tape inserts, Journal of Heat Transfer, Trans. ASME, 98: 251.
17. Jain, A. K. 1976. Accurate explicit equation for friction factor, J. of Hyd. Div., ASCE: 674–677.
18. Date A. S. and Simgham, J. R.1972. Numerical prediction of friction and heat transfer characteristics of fully developed laminar flow in tubes containing twisted tapes. ASME, Paper12-HT–17.
19. Smithberg E, and Landies, F. 1964. Friction and forced convection heat transfer characteristics in tubes with twisted tape swirl generators. Journal of Heat Transfer, Transactions of ASME, 86: 39–49 Series C.
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Bhakta, A. K., & Kumar, S. (2021). Investigation on Thermal and Hydraulic Performances of Parabolic Trough Solar Collector. International Journal Of Mathematics And Computer Research, 9(4), 2231-2236. Retrieved from https://ijmcr.in/index.php/ijmcr/article/view/316