Session: 05-06 Other CSP Technologies

Paper Number: 107263

107263 - An Experimental Investigation of a Water-Based C-Dot Nanofluid Optical Filter for Concentrated Photovoltaic-Thermal (Cpv-T) Systems 

In a conventional photovoltaic thermal (PV-T) system, the operational cell temperature limits the maximum thermal output of the system. The employment of spectral beam splitting (SBS) designs decouples photovoltaic and photothermal conversions, and thus it overcomes the inherent limitation of obtaining a low-grade thermal output. A nanofluid-based spectral beam splitter (SBS) using C-dots and water as the base fluid is employed in this study to overcome this challenge. An absorptive optical filter consists of a liquid-based selective absorption filter and a solid absorption filter that acts as a band pass filter for the solar cells. The main highlight of this study is the significant colloidal stability of the new C-dot/water nanofluid, which is found to be stable for more than six months after it is synthesized using an economic one-pot method. This study reports on a nanofluid that achieves long-term stability without any additives. The stability, thermophysical properties, and rheological characteristics of C-dot/water nanofluids are investigated, and the effects of solar radiation, optical thickness, and mass fraction on the thermal/electrical performance of CPV-T hybrid systems employing such filters are discussed. This nanofluid offers high optical performance, corrosion resistance, and low production costs, so it may be one of the best working fluids for spectral splitting.

Presenting Author: Sandesh Surendra Chougule Imperial College London

Presenting Author Biography: Dr. Sandesh S. Chougule has received Master’s (2012) and PhD (2015) degrees from Government College of Engineering Karad and Indian Institute of Technology Indore, respectively. Currently, he is working as Marie Sklodowska-Curie Individual Fellow at Imperial College London. He is served as an Assistant Professor in Mechanical-Mechatronics Engineering at the LNM Institute of Information Technology, Jaipur, India. Prior to his arrival at LNMIIT Jaipur, Dr. Chougule served as assistant professor in the Department of Mechanical Engineering at BITS Pilani, K K Birla Goa Campus from 20015-16. He has published 25+ articles in reputed international journals. He has presented and published 30+ research papers in reputed ASME conferences (in India and abroad). His research areas are nanofluids, enhanced heat transfer, jet impingement, heat pipes and solar energy. He served as member of advisory committee for various international and national conferences. He has received first rank in his Master program. He is an active reviewer of various reputed international journals in the field of thermal Engineering. Recently, he has received ISTE-SGSITS National Award for Best Research Work done by Young Teachers (Below 35) Engineering Colleges.