Imperial College London
Alternate

ProfessorChristosMarkides

Faculty of Engineering, Department of Chemical Engineering

Professor of Clean Energy Technologies
 
 
 
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Contact

 

+44 (0)20 7594 1601c.markides Website

 
 
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Location

 

404ACE ExtensionSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Huang:2021:10.1016/j.renene.2021.04.070,
author = {Huang, G and Wang, K and Riera, Curt S and Franchetti, B and Pesmazoglou, I and Markides, C},
doi = {10.1016/j.renene.2021.04.070},
journal = {Renewable Energy},
pages = {590--605},
title = {On the performance of concentrating fluid-based spectral-splitting hybrid PV-thermal (PV-T) solar collectors},
url = {http://dx.doi.org/10.1016/j.renene.2021.04.070},
volume = {174},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Concentrating fluid-based spectral-splitting hybrid PV-thermal (SSPVT) collectors are capable of high electrical and thermal efficiencies, as well as high-temperature thermal outputs. However, the optimal optical filter and the maximum potential of such collectors remain unclear. In this study, we develop a comprehensive two-dimensional model of a fluid-based SSPVT collector. The temperature distributions reveal that these designs are effective in thermally decoupling the PV module from the high-temperature filter flow-channel, improving the electrical performance of the module. For a Si solar cell-based SSPVT collector with optical filter #Si400-1100, the filter channel is able to produce high-temperature thermal energy (400 °C) with an efficiency of 19.5%, low-temperature thermal energy (70 °C) with an efficiency of 49.5%, and electricity with an efficiency 17.5%. Of note is that the relative fraction of high-temperature thermal energy, low-temperature thermal energy and electricity generated by such a SSPVT collector can be adjusted by shifting the upper- and lower-bound cut-off wavelengths of the optical filter, which are found to strongly affect the spectral and energy distributions through the collector. The optimal upper-bound cut-off always equals the bandgap wavelength of the solar cell material (e.g., 1100 nm for Si, and 850 nm for CdTe), while the optimal lower-bound cut-off follows more complex selection criteria. The SSPVT collector with the optimal filter has a significantly higher total effective efficiency than an equivalent conventional solar-thermal collector when the relative value of the high-temperature heat to that of electricity is lower than 0.5. Detailed guidance for selecting optimal filters and their role in controlling SSPVT collector performance under different conditions is provided.
AU  - Huang,G
AU  - Wang,K
AU  - Riera,Curt S
AU  - Franchetti,B
AU  - Pesmazoglou,I
AU  - Markides,C
DO  - 10.1016/j.renene.2021.04.070
EP  - 605
PY  - 2021///
SN  - 0960-1481
SP  - 590
TI  - On the performance of concentrating fluid-based spectral-splitting hybrid PV-thermal (PV-T) solar collectors
T2  - Renewable Energy
UR  - http://dx.doi.org/10.1016/j.renene.2021.04.070
UR  - http://hdl.handle.net/10044/1/89565
VL  - 174
ER  -
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