scholarly journals Evaluation of a PV-TEG Hybrid System Configuration for an Improved Energy Output: A Review

2020 ◽  
Author(s):  
Umar Abubakar Saleh ◽  
Muhammad Akmal Johar ◽  
Siti Amely Binti Jumaat ◽  
Muhammad Nazri Rejab ◽  
Wan Akashah Wan Jamaludin
Keyword(s):  
Hybrid System ◽  
Solar Spectrum ◽  
Infrared Region ◽  
Energy Output ◽  
System Configuration ◽  
Thermoelectric Effects ◽  
Energy Demands ◽  
Thermoelectric Energy ◽  
Thermoelectric Systems ◽  
Hybrid Photovoltaics

The development of sustainable energy, in particular solar energy, is essential to achieving future energy demands. Solar radiation and heat energy will provide the required electricity needed in daily life. Photovoltaics and thermoelectric energy conversion have been developed over the years. Photovoltaics also converts the ultraviolet-visible areas of the solar spectrum, while thermoelectric uses the Infrared region. Combination of photovoltaic and thermoelectric effects will expand the efficient spectrum range. Research has recently been conducted on hybrid photovoltaic-thermoelectric systems to increase conversion efficiency. The purpose of this work is to review the primary concepts of the hybrid photovoltaics-thermoelectric generator. The work summarises the different methods used to combine hybrid photovoltaic-thermoelectric systems. A proposed PV-TEG Hybrid system using shingle in between the PV and the TEG is presented. Further research on the hybrid system is also encouraged due to encouraging performance

scholarly journals Evaluation of a PV-TEG Hybrid System Configuration for an Improved Energy Output: A Review

2021 ◽  
Vol 10 (2) ◽  
pp. 385-400
Author(s):  
Umar Abubakar Saleh ◽  
Muhammad Akmal Johar ◽  
Siti Amely Binti Jumaat ◽  
Muhammad Nazri Rejab ◽  
Wan Akashah Wan Jamaludin
Keyword(s):  
Solar Cells ◽  
Hybrid System ◽  
System Integration ◽  
Solar Spectrum ◽  
Energy Output ◽  
Critical Parameters ◽  
Future Research ◽  
Solar Pv ◽  
Thermoelectric Effects ◽  
Wide Range

The development of renewable energy, especially solar, is essential for meeting future energy demands. The use of a wide range of the solar spectrum through the solar cells will increase electricity generation and thereby improve energy supply. However, solar photovoltaics (PV) can only convert a portion of the spectrum into electricity. Excess solar radiation is wasted by heat, which decreases solar PV cells’ efficiency and decreases their life span. Interestingly, thermoelectric generators (TEGs) are bidirectional devices that act as heat engines, converting the excess heat into electrical energy through thermoelectric effects through when integrated with a PV. These generators also enhance device efficiency and reduce the amount of heat that solar cells dissipate. Several experiments have been carried out to improve the hybrid PV-TEG system efficiency, and some are still underway. In the present study, the photovoltaic and thermoelectric theories are reviewed. Furthermore, different hybrid system integration methods and experimental and numerical investigations in improving the efficiency of PV-TEG hybrid systems are also discussed. This paper also assesses the effect of critical parameters of PV-TEG performance and highlights possible future research topics to enhancing the literature on photovoltaic-thermoelectric generator systems.

Boron nitride zigzag nanoribbons: optimal thermoelectric systems

2015 ◽  
Vol 17 (34) ◽  
pp. 22448-22454 ◽  
Author(s):  
K. Zberecki ◽  
R. Swirkowicz ◽  
J. Barnaś
Keyword(s):  
Density Functional Theory ◽  
Boron Nitride ◽  
Density Functional ◽  
Thermoelectric Effects ◽  
Functional Theory ◽  
Thermoelectric Systems ◽  
The Density Functional Theory ◽  
Boron Nitride Nanoribbons

Conventional and spin related thermoelectric effects in zigzag boron nitride nanoribbons are studied theoretically within the Density Functional Theory (DFT) approach.

A new system configuration design and power management strategies for a multi-source hybrid truck

2018 ◽  
Vol 232 (8) ◽  
pp. 1053-1062 ◽  
Author(s):  
Zhenhe Li ◽  
Yanjun Huang ◽  
Hong Wang
Keyword(s):  
Fuel Consumption ◽  
Power Management ◽  
Hybrid System ◽  
Dynamic Models ◽  
Control Strategies ◽  
Management Strategies ◽  
Operating Conditions ◽  
System Structure ◽  
System Configuration ◽  
Power Management Strategy

In this article, a novel system configuration with multiple energy sources is proposed for a hybrid truck in order to reduce fuel consumption and overcome the drawbacks of using a single energy source. The energy-saving characteristics of the hybrid system can be displayed after analyzing its system structure and performances. In order to validate the advantages of this presented system, the dynamic models of the system components are established in a MATLAB/Simulink environment, and initial and improved power management strategies with rule-based algorithms are developed. Then, the hybrid system is simulated based on the models and control strategies over the urban dynamometer driving schedule driving cycle. The simulation results show that the fuel consumption employing the initial power management strategy is 12.49 L/100 km, and there is a significant decrease with around 13.6% based on the improved strategy. The results also verify that the better fuel economy can be achieved by the proposed multi-source system compared to the counterparts under the same operating conditions.

Spectral Transmission of a Solar Collector and Fiber Optic Distribution Hybrid Lighting System

2007 ◽  
Author(s):  
L. C. Maxey ◽  
J. E. Parks ◽  
D. L. Beshears ◽  
D. D. Earl ◽  
M. V. Lapsa ◽  
...  
Keyword(s):  
Solar Energy ◽  
Hybrid System ◽  
Solar Collector ◽  
Fiber Optic ◽  
Renewable Energy Sources ◽  
Solar Spectrum ◽  
Solar Light ◽  
Spectral Transmission ◽  
Lighting System ◽  
Nir Light

Increased use of solar energy will reduce requirements for non-renewable energy sources such as fossil fuels and reduce associated greenhouse gas emissions. The benefits of replacing fossil-based energy with solar energy are often dependent on the application and operational or duty cycle for power demand. One particularly efficient use of solar energy is hybrid lighting. In hybrid lighting, solar light is concentrated into optical fibers and then coupled with supplemental electrical lighting to maintain a constant level of illumination. The system is able to offer reliable lighting with less energy consumption from the electrical grid (which is often driven by non-renewable sources). This technique offers energy efficiency benefits since the solar light is used directly and suffers no conversion losses. Furthermore, the solar spectrum provides an illumination that lighting engineers value for it’s quality; office inhabitants appreciate for its comfort; and retailers believe leads to increased sales. When available solar light is low, the hybrid system allows traditional light sources to reliably meet lighting demands. The success of the solar hybrid lighting system is dependent on the collection and transmission efficiency of the system. In this study, the spectral transmission of a hybrid lighting system is characterized. The system is composed of a 200-sun concentration reflective solar collector and a plastic fiber optic distribution network. The ultraviolet (UV), visible, and near-infrared (NIR) spectral transmission was characterized over a spectral range of 200 nm to 2400 nm. The UV and NIR performance of the system is critical since optical fiber damage can be caused by both UV and NIR light; thus, optimal system design maximizes the collection and transmission of visible light while minimizing the transmission of the UV and NIR light. Spectral transmission data for all components in the hybrid system are presented, and performance properties relative to solar applications are discussed.

scholarly journals A nonlinear thermodynamic model for a breakdown of the Onsager symmetry and the efficiency of thermoelectric conversion in nanowires

2014 ◽  
Vol 470 (2170) ◽  
pp. 20140265 ◽  
Author(s):  
V. A. Cimmelli ◽  
A. Sellitto ◽  
D. Jou
Keyword(s):  
Transport Coefficients ◽  
Thermoelectric Conversion ◽  
Thermoelectric Energy ◽  
Thermoelectric Systems ◽  
Onsager Symmetry ◽  
Effective Transport ◽  
Non Local ◽  
Effective Transport Coefficients ◽  
Linear Effects ◽  
Symmetry Relations

We consider non-equilibrium steady-state situations for thermoelectric systems with non-local and non-linear effects. We show that the Onsager symmetry relations for effective transport coefficients break down. We also estimate the consequences of such a breakdown for the efficiency of the thermoelectric energy conversion which, under some conditions, could be higher than in the usual linear regime with Onsager symmetry.

scholarly journals Highly transparent all-dielectric metasurface to block the near-infrared region of the solar spectrum

2020 ◽  
Vol 28 (21) ◽  
pp. 30466
Author(s):  
Eunjong Kim ◽  
Sangwon Baek ◽  
Jae Yong Park ◽  
Kwang Ho Kim ◽  
Jong-Lam Lee
Keyword(s):  
Near Infrared ◽  
Solar Spectrum ◽  
Infrared Region ◽  
Near Infrared Region ◽  
Dielectric Metasurface

scholarly journals Study of Modeling of Hybrid Energy System for Optimum Power Extraction from the System to the Grid

2021 ◽  
Vol 7 (2) ◽  
pp. 19-24
Author(s):  
Ashish Srivastava ◽  
Dr. M S Dash
Keyword(s):  
Power Generation ◽  
Hybrid System ◽  
Large Scale ◽  
Energy System ◽  
Stable Operation ◽  
Hybrid Energy ◽  
Power Extraction ◽  
Energy Demands ◽  
Attractive Option ◽  
Micro Grid

With the growing demand of electricity, deployment of micro grid is becoming an attractive option to meet the energy demands. At present, large-scale wind/solar hybrid system is of great potential for development. The large-scale wind/solar hybrid system is of higher reliability compared with wind power generation alone and solar power generation alone However, a grid-connected micro grid suffers from critical stability problems during a power grid failure. For stable operation of the micro grid during a grid failure. In this paper, the transition stability of the micro grid is examined during a power failure

A comprehensive methodology for setting up rural electrifications with minimum budgets on indigenous villages in Malaysia

2019 ◽  
Vol 13 (4) ◽  
pp. 885-902 ◽  
Author(s):  
Kok Yew Soon ◽  
Kein Huat Chua ◽  
Yun Seng Lim ◽  
Li Wang
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Rural Area ◽  
Hybrid System ◽  
Electricity Price ◽  
Rural Electrification ◽  
System Configuration ◽  
Diesel Generator ◽  
Content Type ◽  
Load Following

Purpose This paper aims to propose a comprehensive methodology for setting up rural electrifications for indigenous villages with minimum budgets and the lowest possible cost of electricity (COE). The electricity accessibility of rural area in Malaysia is not fully covered and the cost of extending the grid to these areas can be high as RM 2.7m per km. Lack of vigorous policies and economic attraction of the rural areas are also the main barriers to rural electrification. Electricity is an essential element of economic activities and the lack of electricity exacerbates poverty and contributes to its perpetuation. Therefore, a hybrid standalone power system can be an alternative solution for the rural electrification. A hybrid standalone power system is studied to investigate the potential of the implementation and the budget required. Design/methodology/approach A site survey has been carried out in a village in Peninsular Malaysia, namely, Kampung Ulu Lawin Selatan. A standalone hybrid system is modeled in HOMER Pro software and the data collected from the selected site are used to obtain the system configuration with the lowest COE. The load following and cycle charging energy dispatch methods are compared to identify the optimal system configuration that yields the lowest COE. The diesel generator-only system is chosen as a benchmark for comparisons. Findings The results show that the hybrid system constituted from the diesel generator, photovoltaic (PV), micro-hydro and energy storage using the load following energy dispatch method yields the lowest COE of RM 0.519 per kWh. The COE of the hybrid system is 378 per cent lower than that of the diesel generator-only system. The lead-acid energy storage system (ESS) is able to reduce 40 per cent of COE as compared to the system without ESS. Originality/value The results indicate that the COE of the diesel-micro hydro-PV-ESS system with load following dispatch strategy is RM 0.519 per kWh, and this value is 35 per cent higher than the average electricity price in Malaysia. However, it is important to note that the costs of extending the grid to the rural area are not taken into account. If this cost is considered into the electricity price, then the standalone hybrid power system proposed by this study is still a competitive alternative for rural electrification.

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