Parametric analysis of energy and exergy efficiencies of a hybrid PV/T system containing metallic nanofluids

2022 ◽  
Author(s):  
Filipe L.J. Diniz ◽  
Caio V.P. Vital ◽  
Luis A. Gómez-Malagón
Keyword(s):  
Parametric Analysis ◽  
Energy And Exergy ◽  
T System

scholarly journals Performance Evaluation of Photovoltaic/Thermal (PV/T) System Using Different Design Configurations

2020 ◽  
Vol 12 (22) ◽  
pp. 9520
Author(s):  
M. Imtiaz Hussain ◽  
Jun-Tae Kim
Keyword(s):  
Heat Exchanger ◽  
Numerical Study ◽  
Balance Equations ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients ◽  
Pv Panel ◽  
Exchange Area ◽  
Energy And Exergy ◽  
Overall Efficiency ◽  
T System

This study summarizes the performance of a photovoltaic/thermal (PV/T) system integrated with a glass-to-PV backsheet (PVF film-based backsheet) and glass-to-glass photovoltaic (PV) cells protections. A dual-fluid heat exchanger is used to cool the PV cells in which water and air are operated simultaneously. The proposed PV/T design brings about a higher electric output while producing sufficient thermal energy. A detailed numerical study was performed by calculating real-time heat transfer coefficients. Energy balance equations across the dual-fluid PV/T system were solved using an ordinary differential equation (ODE) solver in MATLAB software. The hourly and annual energy and exergy variations for both configurations were evaluated for Cheonan City, Korea. In the case of a PV/T system with a glass-to-glass configuration, a larger heat exchange area causes the extraction of extra solar heat from the PV cells and thus improving the overall efficiency of the energy transfer. Results depict that the annual electrical and total thermal efficiencies with a glass-to-glass configuration were found to be 14.31% and 52.22%, respectively, and with a glass-to-PV backsheet configuration, the aforementioned values reduced to 13.92% and 48.25%, respectively. It is also observed that, with the application of a dual-fluid heat exchanger, the temperature gradient across the PV panel is surprisingly reduced.

scholarly journals Energy and Exergy Analyses of Photovoltaic-Thermal (PV/T) System with TiO2/Water Nanofluid Flow

2019 ◽  
Vol 268 ◽  
pp. 012075
Author(s):  
Nurul Shahirah Binti Rukman ◽  
Ahmad Fudholi ◽  
Nur Farhana Mohd Razali ◽  
Mohd Hafidz Ruslan ◽  
Kamaruzzaman Sopian
Keyword(s):  
Nanofluid Flow ◽  
Energy And Exergy ◽  
Exergy Analyses ◽  
T System

scholarly journals Energy and exergy analyses of PV, solar thermal and photovoltaic/thermal systems: a comparison study

2020 ◽  
Author(s):  
Jiang Qingyang ◽  
Yang Jichun ◽  
Zeng Yanying ◽  
Fu Huide
Keyword(s):  
Solar Thermal ◽  
Input Output ◽  
Pv System ◽  
Thermal Systems ◽  
Solar Systems ◽  
Space Reduction ◽  
Energy And Exergy ◽  
Semi Empirical ◽  
Exergy Performance ◽  
T System

ABSTRACT Compared with photovoltaic (PV) or solar thermal (ST) system alone, the hybrid photovoltaic/thermal (PV/T) system has many advantages such as simultaneous production of electrical and thermal energies, efficient utilization on solar energy, space reduction and so on. However, there is limited data on both the energy and exergy performance comparisons of these three solar systems, especially for annual performance data. This paper aims to present a comparative study on the performances of the PV, ST and PV/T systems by a series of full-day experiments. Energy and exergy performances of these three solar utilization systems were all calculated and analyzed. Moreover, two typical evaluation methods, i.e. semi-empirical system efficiency model method and input–output method, were also used for evaluating the performances of these systems. Finally, based on the input–output method, the annual performances of the PV, ST and PV/T systems under typical meteorological conditions of Hong Kong region were predicted. The results show that the ST system has the highest total energy gain and energy efficiency and the PV system has the highest total exergy gain and exergy efficiency of these three systems. However, by a comprehensive consideration on the energy and exergy performances, the PV/T system has the best overall performance of these three solar systems.

Parametric analysis of energy and exergy of the human body in Indian conditions

2020 ◽  
Vol 33 (3) ◽  
pp. 328
Author(s):  
Arvind Kumar Patel ◽  
Satish Pal Singh Rajput
Keyword(s):  
Human Body ◽  
Parametric Analysis ◽  
Energy And Exergy

Performance study and parametric analysis of a novel heat pipe PV/T system

Energy ◽  
2012 ◽  
Vol 37 (1) ◽  
pp. 384-395 ◽  
Author(s):  
Pei Gang ◽  
Fu Huide ◽  
Zhu Huijuan ◽  
Ji Jie
Keyword(s):  
Heat Pipe ◽  
Parametric Analysis ◽  
Performance Study ◽  
T System

scholarly journals Performance Optimization of Unglazed Nanofluid Photovoltaic/Thermal System: Energy and Exergy Analyses

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
M. Imtiaz Hussain ◽  
Jun-Tae Kim
Keyword(s):  
Heat Transfer ◽  
Performance Optimization ◽  
Pure Water ◽  
Operating Conditions ◽  
Heat Extraction ◽  
Transfer Coefficients ◽  
Heat Transfer Coefficients ◽  
Energy And Exergy ◽  
Exergy Analyses ◽  
T System

The focus of this paper is to predict the transient response of a nanoengineered photovoltaic thermal (PV/T) system in view of energy and exergy analyses. Instead of a circular-shaped receiver, a trapezoidal-shaped receiver is employed to increase heat transfer surface area with photovoltaic (PV) cells for improvement of heat extraction and thus achievement of a higher PV/T system efficiency. The dynamic mathematical model is developed using MATLAB® software by considering real-time heat transfer coefficients. The proposed model is validated with experimental data from a previous study. Negligible discrepancies were found between measured and predicted data. The validated model was further investigated in detail using different nanofluids by dispersing copper oxide (CuO) and aluminum oxide (Al2O3) in pure water. The overall performance of the nanoengineered PV/T system was compared to that of a PV/T system using water only, and optimal operating conditions were determined for maximum useful energy and exergy rates. The results indicated that the CuO/water nanofluid has a notable impact on the energy and exergy efficiencies of the PV/T system compared to that of Al2O3/water nanofluid and water only cases.

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