Author
Shivangi Sharma
Bio: Shivangi Sharma is an academic researcher from University of Exeter. The author has contributed to research in topics: Photovoltaic system & Electrical efficiency. The author has an hindex of 4, co-authored 6 publications receiving 226 citations.
Papers
More filters
••
TL;DR: In this article, the effect of phase change materials (PCM) on electrical parameters of low-concentration BICPV system via thermal regulation has been evaluated with an in-house designed and fabricated PCM containment, which showed an increase in relative electrical efficiency by 7.7% with PCM incorporation.
157 citations
••
TL;DR: In this paper, a combined passive cooling solution for building integrated concentrated concentrated photovoltaics (BICPV) incorporating micro-fins, phase change material (PCM) and Nanomaterial Enhanced PCM (n-PCM).
142 citations
••
28 Sep 2015
TL;DR: In this article, a phase change material (PCM) container has been designed, developed and integrated with the building integrated concentrated photovoltaic (BICPV) system to maintain solar cell operating temperature and improve its performance.
Abstract: Building Integrated Concentrated Photovoltaic (BICPV) systems have three main benefits for integration into built environments, namely, (i) generating electricity at the point of use (ii) allowing light efficacy within the building envelope and (iii) providing thermal management. In this work, to maintain solar cell operating temperature and improve its performance, a phase change material (PCM) container has been designed, developed and integrated with the BICPV system. Using highly collimated continuous light source, an indoor experiment was performed. The absolute electrical power conversion efficiency for the module without PCM cooling resulted in 7.82% while using PCM increased it to 9.07%, thus showing a relative increase by 15.9% as compared to a non- PCM system. A maximum temperature reduction of 5.2°C was also observed when the BICPV module was integrated with PCM containment as compared to the BICPV system without any PCM containment.
19 citations
••
01 Sep 2016
TL;DR: In this article, the thermal behavior of concentrating photovoltaic (BICPV) and phase change material (PCM) systems was investigated through numerical modeling simulations, and the results showed a 3% electrical efficiency improvement of the BICPVs-PCM system in certain cases.
Abstract: Thermal regulation of building-integrated concentrating photovoltaic (BICPV) systems have a direct influence on the photovoltaic performance. This paper investigates the thermal behavior of a BICPV and phase change material (PCM) system through numerical modeling simulations. Based on an updated mathematical model, theoretical simulation has been conducted for a BICPV-PCM system. The results show a 3% electrical efficiency improvement of the BICPV-PCM system in certain cases.
5 citations
••
TL;DR: In this paper, the authors investigated the potential of a new integrated solar concentrated photovoltaic (CPV) system that uses a solo point focus Fresnel lens for multiple multi-junction solar cells (MJSCs).
Abstract: This paper investigates the potential of a new integrated solar concentrated photovoltaic (CPV) system that uses a solo point focus Fresnel lens for multiple multi-junction solar cells (MJSCs). The proposed system comprises of an FL concentrator as the primary optical element, a multi-leg homogeniser as the secondary optical element (SOE), a plano-concave lens, and four MJSCs. A three-dimensional model of this system was developed using the ray tracing method to predict the influence of aperture width, height, and position with respect to MJSCs of different reflective and refractive SOE on the overall optical efficiency of the system and the irradiance uniformity achieved on the MJSCs’ surfaces. The results show that the refractive homogeniser using N-BK7 glass can achieve higher optical efficiency (79%) compared to the reflective homogeniser (57.5%). In addition, the peak to average ratio of illumination at MJSCs for the reflective homogeniser ranges from 1.07 to 1.14, while for the refractive homogeniser, it ranges from 1.06 to 1.34, causing minimum effects on the electrical performance of the MJSCs. The novelty of this paper is the development of a high concentration CPV system that integrates multiple MJSCs with a uniform distribution of rays, unlike the conventional CPV systems that utilise a single concentrator onto a single MJSC. The optical efficiency of the CPV system was also examined using both the types of homogeniser (reflective and refractive).
3 citations
Cited by
More filters
01 Jan 2016
TL;DR: The numerical heat transfer and fluid flow is universally compatible with any devices to read and is available in the authors' digital library an online access to it is set as public so you can get it instantly.
Abstract: Thank you for reading numerical heat transfer and fluid flow. Maybe you have knowledge that, people have search numerous times for their favorite books like this numerical heat transfer and fluid flow, but end up in infectious downloads. Rather than reading a good book with a cup of coffee in the afternoon, instead they cope with some malicious virus inside their computer. numerical heat transfer and fluid flow is available in our digital library an online access to it is set as public so you can get it instantly. Our books collection spans in multiple countries, allowing you to get the most less latency time to download any of our books like this one. Merely said, the numerical heat transfer and fluid flow is universally compatible with any devices to read.
1,531 citations
••
TL;DR: In this article, the authors focus on the application of various phase change materials based on their thermophysical properties, in particular, the melting point, thermal energy storage density and thermal conductivity of the organic, inorganic and eutectic phases.
813 citations
••
320 citations
••
TL;DR: In this article, the effects of both inorganic nanoparticles as an additive to PCM and magnetic field on the PCM solidification rate inside a porous energy storage system have been modeled.
264 citations
••
TL;DR: A broad classification and review of published research work on combined solar photovoltaic-thermal systems (PVT) is given in this article, which mostly covers the experimental work carried out on the different types of PVT systems in the last decade.
Abstract: Combined solar photovoltaic-thermal systems (PVT) facilitate conversion of solar radiations into electricity and heat simultaneously. A significant amount of work has been carried out on these systems since 1970. Different PVT systems have been invented in the last thirty years. Several theoretical, mathematical, numerical and experimental models are introduced by many investigators across the world. The present article gives a broad classification and review of published research work on these systems. The article mostly covers the experimental work carried out on the different types of PVT systems in the last decade. The latest technology of liquid spectrum filters for PVT systems are also explored in depth.
236 citations