A Transparent Metasurface Absorber/Emitter with High Solar Thermal Transfer Efficiency for Combined Solar/Thermal Conversion Application

Plasmonics ◽  
2022 ◽  
Author(s):  
Fathi Bendelala ◽  
Ali Cheknane
Keyword(s):  
Thermal Conversion ◽  
Solar Thermal ◽  
Transfer Efficiency ◽  
Thermal Transfer

Self-encapsulating Ag nanospheres in amorphous carbon: A novel ultrathin selective absorber for flexible solar-thermal conversion

2021 ◽  
Author(s):  
Wei Li ◽  
Cheng-Bing Wang ◽  
Jinzhu Yang ◽  
Jiulong wang ◽  
Wenhe Zhang
Keyword(s):  
Energy Conversion ◽  
Amorphous Carbon ◽  
Thermal Conversion ◽  
Solar Thermal ◽  
Solar Absorbers ◽  
Energy Conversion Devices

Solar-thermal conversion is very appealing for various applications, especially in wearable energy conversion devices. Despite various solar absorbers having been developed, they are usually suitable only for rigid substrates. Hence...

Two-level synergistic scatterings from porosity and particle aggregation in Cu nanofluids for the enhancement of solar thermal conversion

2021 ◽  
pp. 116940
Author(s):  
Zhenglai Tang ◽  
Dongxing Song ◽  
Weigang Ma ◽  
Xing Zhang
Keyword(s):  
Thermal Conversion ◽  
Particle Aggregation ◽  
Solar Thermal

scholarly journals Recent Research Progress in Solar Thermal Conversion Theory and Applications

2015 ◽  
Vol 2015 ◽  
pp. 1-2 ◽  
Author(s):  
Gang Pei ◽  
Yuehong Su ◽  
Sauro Filippeschi ◽  
Hongfei Zheng
Keyword(s):  
Thermal Conversion ◽  
Solar Thermal ◽  
Research Progress ◽  
Recent Research Progress

Fabrication of multi-walled carbon-nanotube-grafted polyvinyl-chloride composites with high solar-thermal-conversion performance

2019 ◽  
Vol 170 ◽  
pp. 77-84
Author(s):  
Xiaoning Shen ◽  
Minzun Ji ◽  
Shiming Zhang ◽  
Yujun Qin ◽  
Pu Zhang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Polyvinyl Chloride ◽  
Thermal Conversion ◽  
Solar Thermal ◽  
Multi Walled Carbon Nanotube ◽  
Conversion Performance

scholarly journals Improved Thermal Transfer Efficiency for Planar Solar Thermophotovoltaic Devices

2013 ◽  
Author(s):  
David M. Bierman ◽  
Andrej Lenert ◽  
Evelyn N. Wang
Keyword(s):  
Solar Energy ◽  
Solar Spectrum ◽  
Electrical Energy ◽  
Photovoltaic Cell ◽  
Area Ratio ◽  
Transfer Efficiency ◽  
System Level ◽  
Surface Geometry ◽  
Thermal Transfer ◽  
Absorber Surface

Solar thermophotovoltaic (STPV) devices provide conversion of solar energy to electrical energy through the use of an intermediate absorber/emitter module, which converts the broad solar spectrum to a tailored spectrum that is emitted towards a photovoltaic cell [1]. While the use of an absorber/emitter device could potentially overcome the Shockley-Queisser limit of photovoltaic conversion [2], it also increases the number of heat loss mechanisms. One of the most prohibitive aspects of STPV conversion is the thermal transfer efficiency, which is a measure of how well solar energy is delivered to the emitter. Although reported thermophotovoltaic efficiencies (thermal to electric) have exceeded 10% [3], [4], previously measured STPV conversion efficiencies are below 1% [5], [6], [7]. In this work, we present the design and characterization of a nanostructured absorber for use in a planar STPV device with a high emitter-to-absorber area ratio. We used a process for spatially-selective growth of vertically aligned multi-walled carbon nanotube (MWCNT) forests on highly reflective, smooth tungsten (W) surfaces. We implemented these MWCNT/W absorbers in a TPV system with a one-dimensional photonic crystal emitter, which was spectrally paired with a low bandgap PV cell. A high fidelity, system-level model of the radiative transfer in the device was experimentally validated and used to optimize the absorber surface geometry. For an operating temperature of approximately 1200 K, we experimentally demonstrated a 100% increase in overall STPV efficiency using a 4 to 1 emitter-to-absorber area ratio (relative to a 1 to 1 area ratio), due to improved thermal transfer efficiency. By further increasing the solar concentration incident on the absorber surface, increased emitter-to-absorber area ratios will improve both thermal transfer and overall efficiencies for these planar devices.

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