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research-article

Energetic and Exergetic Performance of Solar Flat-Plate Collector Working with Cu Nanofluid

[+] Author and Article Information
Reza Shamshirgaran

Department of Mechanical Engineering, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia; Department of Mechanical and Energy Engineering, Shahid Beheshti University, 16765-1719, Tehran, Iran
seyedreza_g03458@utp.edu.my

Morteza Khalaji Assadi

Department of Mechanical Engineering, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia
morteza.assadi@utp.edu.my

Hussain Al-Kayiem

Department of Mechanical Engineering, Universiti Teknologi PETRONAS, 32610 Bandar Seri Iskandar, Perak, Malaysia
hussain_kayiem@utp.edu.my

Viswanatha Sharma Korada

Centre for Energy Studies, Department of Mechanical Engineering, JNTUH College of Engineering, Kukatpally, Hyderabad 500085, India
kvsharmajntu@gmail.com

1Corresponding author.

ASME doi:10.1115/1.4039018 History: Received August 04, 2017; Revised November 27, 2017

Abstract

The evaluation of the performance and characteristics of a solar flat-plate collector (FPC) are reported for domestic and industrial requirements in the existing literature. A computer code was developed using MATLAB to model and evaluate the energetic and exergetic performance of a nanofluid-based FPC for steady state and laminar conditions. The analysis was performed using practical geometry data, especially the collector emittance, for a standard collector. Linear pressure losses in manifolds were taken into account, and a more accurate exergy factor corresponding to a correct value of 5770 K for the sun temperature was employed. The results demonstrate that copper-water nanofluid has the potential to augment the internal convection heat transfer coefficient by 76.5%, and to enhance the energetic efficiency of the collector from 70.3% to 72.1% at 4% volume concentration, when compared to the values with water. Additionally, it was revealed that copper nanofluid is capable of increasing the collector fluid's outlet temperature and decreasing the absorber plate's mean temperature by 3 K. The addition of nanoparticles to the water demonstrated a reduction in the total entropy generation by the solar FPC. Furthermore, increasing the nanoparticle size reflected a reduction in the overall performance of the solar collector.

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