In conventional photovoltaic systems, the cell responds to only a portion of the energy in the full solar spectrum, and the rest of the solar radiation is converted to heat, which increases the temperature of the cell and thus reduces the photovoltaic conversion efficiency [[8], [9], [10]].Silicon-based solar cells are the most productive and widely traded cells available
This book addresses a range of advanced energy efficiency technologies and their applications in solar heating, cooling and power generation, delivers solutions to tackle the low efficiency problems remaining within current systems, and demonstrates how to
In general, an efficient solar steam generation system should possess the following characteristics (Su et al., 2022; Li et al., 2023a; Yang et al., 2024; Zhu et al., 2023): (i) high light-trapping capability to maximize sunlight absorption and conversion it into thermal energy; (ii) high photothermal conversion efficiency to increase steam generation speed; (iii)
In comprehensive tests, our system effectively lowered the PV module temperature by 15 °C during daylight at 800 W/m 2 irradiance. Under a clear night sky, it achieved a remarkable 20 % improvement in power generation (120 mV) compared to previous studies.
Additionally, photovoltaic power generation efficiency is generally higher in spring and autumn than in summer and winter, with enhanced power generation performance observed. At an inclination angle of 40°,
Under 2-sun illumination, solar power generation had an efficiency of 0.6%, resulting in an output density of 1 W/cm 2, and a saturated voltage of 84 mV. The experimental results concerning CNT-based solar hybrid generators and the key factors influencing their performance are summarized in Table S5.
In a co-generation power plant based on solar energy, the heat needed for the ORC cycle is provided from solar sources, its integration with the reverse osmosis (RO) system to produce fresh water will be more efficient than the Multi Effect Desalination (MED) system; But for a supercritical CO2 power cycle, MED is more commonly chosen.
We have designed and fabricated TiN/SiO 2 /TiN–HfO 2-based new metamaterial microstructures as an absorber of the visible wavelength, in the range of 400–700 nm, with exceptionally high absorption efficiency (>96%) for solar energy harvesting purposes and generation of heat upon absorption of electromagnetic energy. The finite element
Photovoltaic (PV) power generation is highly regarded for its capability to transform solar energy into electrical power. However, in real-world applications, PV modules are prone to issues such as increased self-heating and surface dust accumulation, which contribute to a reduction in photoelectric conversion efficiency. Furthermore, elevated temperatures can
This book, based on the research experience and outcomes of a group of international contributors, addresses a range of advanced energy efficiency technologies and their applications in solar...
This paper presents a review of the open literature on solar energy based heat and power plants considering both the solar PV and solar thermal technologies in both solar-only and solar-hybrid configurations. Some key trends observed from the
In any solar energy system, the conversion of sunlight into electricity is crucial, but it isn''t perfectly efficient and can lead to heat generation. This section explores heat effects, transfer mechanisms, and losses associated with components like charge controllers, inverters, and wiring (Wei et al., 2021 ).
Studies have suggested that solar-assisted heat pump efficiency can be enhanced by geothermal heat sources. Yang et al. 96] proved that SAGSHP reduced electricity consumption by 10.4% and 14.5%, and Xi et al. [97] showed that a SAGSHP increases heating efficiency by 26.3% compared with a standard GSHP. Wang et al. [98] experimentally
Under 2-sun illumination, solar power generation had an efficiency of 0.6%, resulting in an output density of 1 W/cm 2, and a saturated voltage of 84 mV. The
The solar-to-heat transfer efficiency is suboptimal due to the reflection of the surface of the heat absorber, so that the heat used for evaporation is much less than the actual solar thermal power. (2) Efficiency is improved by reducing heat losses on the device surface based on volumetric solar absorption, which relies on stable nanofluid dispersion and a long
PV or PVT panels absorb the majority of solar radiation, and therefore their temperature inevitably increases, which in turn reduces their energy conversion efficiency. Solar air heaters (SAHs) supply heated air for domestic and industrial use or to generate electricity using thermoelectric devices [3, 4, 5, 6, 7, 8, 9].
This article has focused on five key approaches based on redesigned absorbers, mini/microchannels, polymer materials, PCMs, and nanofluids. These methods primarily aim to reduce solar cell temperatures by maximizing the absorption of excess heat from the solar cells into the absorber using various media. The impact on thermal or electrical
This article has focused on five key approaches based on redesigned absorbers, mini/microchannels, polymer materials, PCMs, and nanofluids. These methods primarily aim to reduce solar cell temperatures by
In any solar energy system, the conversion of sunlight into electricity is crucial, but it isn''t perfectly efficient and can lead to heat generation. This section explores heat
This book addresses a range of advanced energy efficiency technologies and their applications in solar heating, cooling and power generation, delivers solutions to tackle the low efficiency problems remaining within current
Plasmonic solar absorber holds great potential in solar-powered steam generation due to its resonant absorption, rapid photo-to-heat conversion, and localized heating impact. However, expanding the absorption bandwidth of plasmonic nanoparticles is challenging. Here, we produce flexible plasmonic cellulose papers (PCPs) with broadband absorption by
TREC is an emerging technology for low-grade heat recovery and power generation. He et al. [52] introduced a novel concept employing two rotating layers of TREC units, improving energy conversion efficiency, enabling uninterrupted power output, and reducing heat absorption. The innovative rotating TREC device demonstrates an impressive heat-to
In comprehensive tests, our system effectively lowered the PV module temperature by 15 °C during daylight at 800 W/m 2 irradiance. Under a clear night sky, it
An efficient solar absorber can help reduce energy costs and improve the efficiency of a solar energy system. Additionally, the use of an efficient solar absorber can reduce the environmental impact of energy generation, as
Besides the detailed study steam power generation, some researchers had summarized solar steam power generation, Zhang et al. considered that direct solar steam power generation systems could take advantage of solar energy conversion materials to significantly accelerate the evaporation of water [91], and he also introduced in detail how to carry out
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