Energetic and exergetic investigation of a parabolic trough collector with internal fins operating with carbon dioxide

被引：18
作者：
Bellos E. [1 ]
Tzivanidis C. [1 ]
Daniil I. [1 ]
机构：
[1] Thermal Department, School of Mechanical Engineering, National Technical University of Athens, Heroon Polytehniou 9, Zografou, Athens
来源：
International Journal of Energy and Environmental Engineering | 2017年 / 8卷 / 2期
关键词：
Carbon dioxide; Exergetic analysis; Fins; Parabolic trough collector; Thermal performance;
D O I：
10.1007/s40095-017-0229-5
中图分类号：
学科分类号：
摘要：
The objective of this study is to determine the energetic and exergetic enhancement of parabolic trough collector with internal fins in the absorber. Carbon dioxide is the examined working fluid to investigate the performance of the system in high temperature levels. In the first part of this study, the impact of the mass flow rate on the collector performance is analyzed and finally 0.20 kg/s is selected as the most appropriate mass flow rate exergetically. In the second part, the impact of internal fins on the system performance is investigated for operation with the optimum mass flow rate. More specifically, the absorber without fins is compared with three different fins with lengths 5, 10 and 15 mm. The final results prove that the higher fin length increases the thermal performance, while the optimum fin length exergetically is 10 mm with 45.95% exergetic efficiency when the inlet temperature is equal to 400 °C. The impact of the pressure losses along the collector is taken into account in the exergetic efficiency, which is the best index for evaluating solar collectors operating with gases. The analysis is performed with Solidworks Flow Simulation, a powerful tool which allows the simultaneous thermal and optical analysis. © 2017, The Author(s).
引用
收藏
页码：109 / 122
页数：13
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共 34 条
  • [1] Zagba L., Khennane M., Mahamedi I.H., Oudjana H.S., Fezzari A., Bouchakour A., Terki N., A combined simulation and experimental analysis the dynamic performance of a 2 kW photovoltaic plant installed in the desert environment, Int. J. Energy Environ. Eng., 7, pp. 249-260, (2016)
  • [2] Al Mamum S., Chowdhury Z.I., Kaiser M.S., Islam M.S., Techno-financial analysis and design of on-board intelligent-assisting system for a hybrid solar–DEG-powered boat, Int. J. Energy Environ. Eng., 7, pp. 361-376, (2016)
  • [3] Grosu L., Marin A., Dobrovicescu A., Queiros-Conde D., Exergy analysis of a solar combined cycle: organic Rankine cycle and absorption cooling system, Int. J. Energy Environ. Eng., 7, pp. 449-459, (2016)
  • [4] Qiu Y., He Y.-L., Wu M., Zheng Z.-J., A comprehensive model for optical and thermal characterization of a linear Fresnel solar reflector with a trapezoidal cavity receiver, Renew Energy, 97, pp. 129-144, (2016)
  • [5] Napoleon E., Awb H., Yoshino H., Application of renewable energy sources and new building technologies for the Philippine single family detached house, Int. J. Energy Environ. Eng., 6, pp. 267-294, (2015)
  • [6] Bellos E., Tzivanidis C., Moschos K., Antonopoulos K.A., Energetic and financial evaluation of solar assisted heat pump space heating systems, Energy Convers. Manag., 120, pp. 306-319, (2016)
  • [7] Tzivanidis C., Bellos E., Korres D., Antonopoulos K.A., Mitsopoulos G., Thermal and optical efficiency investigation of a parabolic trough collector, Case Stud. Therm. Eng., 6, pp. 226-237, (2016)
  • [8] Fernandez-Garcia A., Zarza E., Valenzuela L., Perez M., Parabolic-trough solar collectors and their applications, Renew. Sustain. Energy Rev., 14, 7, pp. 1695-1721, (2010)
  • [9] Bellos E., Tzivanidis C., Antonopoulos K.A., Daniil I., The use of gas working fluids in parabolic trough collectors—an energetic and exergetic analysis, Appl. Therm. Eng., 109, pp. 1-14, (2016)
  • [10] Cipollone R., Cinocca A., Gualtieri A., Gases as working fluid in parabolic trough CSP plants, Proc. Comput. Sci., 19, pp. 702-711, (2013)
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