Analysis of the solar spectrum allocation in a spectral-splitting photovoltaic-thermochemical hybrid system

Solar Energy ◽  
2022 ◽  
Vol 232 ◽  
pp. 63-72
Author(s):  
Tao Zhu ◽  
Qiang Li ◽  
Aimei Yu
Keyword(s):  
Hybrid System ◽  
Solar Spectrum ◽  
Spectrum Allocation ◽  
Spectral Splitting

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 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.

Analysis of Potential Conversion Efficiency of a Solar Hybrid System With High-Temperature Stage

2005 ◽  
Vol 128 (2) ◽  
pp. 258-260 ◽  
Author(s):  
Y. V. Vorobiev ◽  
J. González-Hernández ◽  
A. Kribus
Keyword(s):  
High Temperature ◽  
Conversion Efficiency ◽  
Hybrid System ◽  
Thermal Energy ◽  
Heat Engine ◽  
Solar Spectrum ◽  
System A ◽  
Pv Cell ◽  
High Temperature Stage ◽  
Thermal Generator

The analysis is given of hybrid system of solar energy conversion having a stage operating at high temperature. The system contains a radiation concentrator, a photovoltaic solar cell, and a thermal generator, which could be thermoelectric one or a heat engine. Two options are discussed, one (a) with concentration of the whole solar radiation on the PV cell working at high temperature and coupled to the high-temperature stage, and another (b) with a special PV cell construction, which allows the use of the part of solar spectrum not absorbed in the semiconductor material of the cell (“thermal energy”) to drive the high-temperature stage while the cell is working at ambient temperature. The possibilities of using different semiconductor materials are analyzed. It is shown that the demands to the cell material are different in the two cases examined: in system (a) with high temperature of cell operation, the materials providing minimum temperature dependence of the conversion efficiency are necessary, for another system (b) the materials with the larger band gap are profitable. The efficiency of thermal generator is assumed to be proportional to that of the Carnot engine. The optical and thermal energy losses are taken into account, including the losses by convection and radiation in the high-temperature stage. The radiation losses impose restrictions upon the working temperature of the thermal generator in the system (b), thus defining the highest possible concentration ratio. The calculations made show that the hybrid system proposed could be both efficient and practical, promising the total conversion efficiency around 25-30% for system (a), and 30-40% for system (b).

scholarly journals Concentrating PV/T Hybrid System for Simultaneous Electricity and Usable Heat Generation: A Review

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Longzhou Zhang ◽  
Dengwei Jing ◽  
Liang Zhao ◽  
Jinjia Wei ◽  
Liejin Guo
Keyword(s):  
Hybrid System ◽  
Heat Dissipation ◽  
Low Cost ◽  
Solar Spectrum ◽  
Solar Light ◽  
Total Efficiency ◽  
Beam Splitting ◽  
Full Spectrum ◽  
Solar Tracking ◽  
Active Liquid

Photovoltaic (PV) power generation is one of the attractive choices for efficient utilization of solar energy. Considering that the efficiency and cost of PV cells cannot be significantly improved in near future, a relatively cheap concentrator to replace part of the expensive solar cells could be used. The photovoltaic thermal hybrid system (PV/T), combining active cooling with thermal electricity and providing both electricity and usable heat, can enhance the total efficiency of the system with reduced cell area. The effect of nonuniform light distribution and the heat dissipation on the performance of concentrating PV/T was discussed. Total utilization of solar light by spectral beam splitting technology was also introduced. In the last part, we proposed an integrated compound parabolic collector (CPC) plate with low precision solar tracking, ensuring effective collection of solar light with a significantly lowered cost. With the combination of beam splitting of solar spectrum, use of film solar cell, and active liquid cooling, efficient and full spectrum conversion of solar light to electricity and heat, in a low cost way, might be realized. The paper may offer a general guide to those who are interested in the development of low cost concentrating PV/T hybrid system.

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

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