Efficiency enhancement of a solar dish collector operating with a novel soybean oil-based-MXene nanofluid and different cavity receivers

JOURNAL OF CLEANER PRODUCTION

卷:317

Article

Aslfattahi, Navid¹  Loni, Reyhaneh²  Bellos, Evangelos³  Najafi, Gholamhassan²  Kadirgama, K.⁴  Harun, W. S. W.⁴  Saidur, R.^5,6 

[1] Univ Malaya, Fac Engn, Dept Mech Engn, Kuala Lumpur 50603, Malaysia

[2] Tarbiat Modares Univ, Dept Biosyst Engn, Tehran, Iran

[3] Natl Tech Univ Athens, Sch Mech Engn, Thermal Dept, Athens, Greece

[4] Univ Malaysia Pahang, Fac Mech & Automot Engn Technol, Pekan, Malaysia

[5] Sunway Univ, Res Ctr Nanomat & Energy Technol RCNMET, Sch Engn & Technol, Petaling Jaya 47500, Selangor Darul, Malaysia

[6] Univ Lancaster, Dept Engn, Lancaster LA1 4YW, England

关键词: Solar dish;    Novel nanofluid;    MXene;    Efficiency enhancement;    Parametric study;   

DOI  :  10.1016/j.jclepro.2021.128430

来源: Elsevier

【 摘 要 】

The objective of the present research work is to investigate a novel high-efficiency nanofluid in a solar dish concentrator by using the numerical model developed. The working fluids examined consisted of soybean oilbased MXene nanofluid of different concentrations (i.e. 0.025, 0.075 and 0.125 wt%) and pure soybean oil. The studied nanofluids yielded excellent thermal properties such as high thermal conductivity and heat capacity, which were two particular factors rendering them excellent candidates for solar thermal applications. The solar dish collector was evaluated for three different cavity receivers including cubical, hemispherical and cylindrical shapes. Then, thermal analysis was performed with a developed numerical model in steady-state conditions, which was validated by using experimental results. Meanwhile, the thermal properties of the oil-based nanofluid were described after the experiments. The analysis was parametric in nature, thereby studying the system performance on a daily basis. According to the analysis, the hemispherical cavity receiver led to maximum thermal efficiency with the nanofluid used. In particular, the daily mean thermal efficiency with nanofluid of 82.66% and the mean equivalent efficiency of 82.46% were achieved, while the mean enhancement was 0.6%. However, the enhancements were higher with the use of other cavities due to the higher thermal losses shown in such cases. Moreover, the equivalent efficiency proved that the increased pumping work due to the use of nanofluid could not overcome the thermal enhancement, thereby improving the overall performance of the solar collector.

【 授权许可】

Free