Performance Evaluation of Carbon-Based Nanofluids for Direct Absorption Solar Collector

Shang-Pang Yu, Tun-Ping Teng (), Chia-Cing Huang, Hsiang-Kai Hsieh and Yi-Jia Wei
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Shang-Pang Yu: Department of Mechanical Engineering, National Taipei University of Technology, No. 1, Sec. 3, Zhongxiao E. Rd., Taipei 10608, Taiwan
Tun-Ping Teng: Undergraduate Program of Vehicle and Energy Engineering, National Taiwan Normal University, No. 162, Sec. 1, He-Ping E. Road, Da-An District, Taipei 10610, Taiwan
Chia-Cing Huang: Department of Industrial Education, National Taiwan Normal University, No. 162, Sec. 1, He-Ping E. Road, Da-An District, Taipei 10610, Taiwan
Hsiang-Kai Hsieh: Department of Industrial Education, National Taiwan Normal University, No. 162, Sec. 1, He-Ping E. Road, Da-An District, Taipei 10610, Taiwan
Yi-Jia Wei: Department of Industrial Education, National Taiwan Normal University, No. 162, Sec. 1, He-Ping E. Road, Da-An District, Taipei 10610, Taiwan

Energies, 2023, vol. 16, issue 3, 1-17

Abstract: In this study, carbon-based nanofluids (CBNFs) were prepared using a revised vortex trap method and applied in the direct absorption solar collector (DASC) to evaluate the feasibility of CBNFs in DASC. The thermal storage performance of water and different concentrations of CBNFs (0.01, 0.025 and 0.05 wt%) was assessed with a 1000 W halogen lamp as a simulated light source under different volumetric flow rates (1.5, 3.0, and 4.5 L per minute [LPM]) at a constant thermal storage load (2.4 kg of water) and ambient temperature of 26 °C. The thermal storage capacity, system efficiency factor ( SEF ), and heating rate of the CBNFs as the working fluid were higher than those of water in most cases. The thermal storage capacity and SEF of 0.05 wt% CBNF at a volumetric flow rate of 3.0 LPM were 10.36% and 9.36% higher than that of water, respectively. The relevant experimental results demonstrate the great potential of CBNFs in DASC.

Keywords: carbon-based nanofluids (CBNFs); direct absorption solar collector (DASC); heating rate; system efficiency factor ( SEF ); thermal storage capacity (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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