Experimental study about utilization of MWCNTs and graphene nanoplatelets water-based nanofluids in flat non-concentrating PVT systems

Thermal Science

Kayfeci Muhammet¹  Alous Salaheldin²  Uysal Ali³ 

[1]Department of Energy Systems Engineering, Faculty of Technology, Karabük University, Karabük, Turkey

[2]Department of Energy Systems Engineering, Graduate School of Natural and Applied Sciences, Karabük University, Karabük, Turkey

[3]Department of Mechatronics Engineering, Hasan Ferdi Turgutlu Technology Faculty, Manisa Celal Bayar University, Manisa, Turkey

关键词: pvt panel;    energy analysis;    graphene nanoplatelets;    nanofluids;    mwcnt;   

DOI  :  10.2298/TSCI190521337A

来源: DOAJ

【 摘 要 】

Although the increment the performance of photovoltaic thermal (PVT) systems by using the nanofluids as working fluids have gained the attention of researchers during the last two decades, there is still, a lack in the literature study associated to this application. This study contributes to the investigations and researches of applying the nanofluids to increase the performance of PVT collectors. A flat non-concentrating PVT collector has been designed, constructed and, outdoor tested in Karabuk University, Turkey. The considered working fluids in this study are multiwall carbon nanotubes (MWCNT), and graphene nanoplatelets dispersed in water as a base fluid with a concentration of 0.5 wt.%. The experiments were run with a volume flow rate of 0.5 L per minute for the aforementioned nanofluids and distilled water (as a reference fluid). The study results have shown and revealed that the MWCNT-water nanofluid presented a better performance in terms of eletrical energetic efficiency compared to graphene nanoplatelets-water nanofluid and distilled water, while graphene nanoplatelets-water nanofluid revealed the highest thermal energetic efficiency. Moreover adding thermal unit to photovoltaic module enhanced the total energetic efficiency by 53.4% for distilled water, 57.2% for MWCNT-water, and 63.1% for graphene-water.

【 授权许可】

Unknown