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Optical properties and transmittances of ZnO-containing nanofluids in spectral splitting photovoltaic/thermal systems
- Source :
- International Journal of Heat and Mass Transfer. 128:668-678
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- As ZnO nanoparticles had the advantages of high thermal conductivity and low cost, the possibility of using ZnO nanoparticles in spectral splitting photovoltaic/thermal (PV/T) systems was initially studied from the perspective of optical properties. Water–ZnO and glycol–ZnO nanofluids were prepared via a two-step method and used for model validation and stability testing. The scheme employed to investigate the optical properties and radiative transfer of the nanofluids was developed using Mie scattering theory combined with the Monte Carlo ray tracing (MCRT) method. The overall effective spectral transmittance coefficients of PV cells were utilized for comprehensive evaluation of the spectral transmittances of the nanofluids in spectral splitting PV/T systems. The overall effective spectral transmittance of a PV cell water-ZnO nanofluids was 21.54% higher than that those of cells containing water–polypyrrole and water–Cu9S5 nanofluids, respectively. The effects of the nanoparticle diameter, mass concentration and the optical length of the nanofluid on the spectral transmittance of glycol–ZnO nanofluid were also investigated.
- Subjects :
- Fluid Flow and Transfer Processes
Materials science
business.industry
020209 energy
Mechanical Engineering
Mie scattering
Photovoltaic system
Nanoparticle
02 engineering and technology
021001 nanoscience & nanotechnology
Condensed Matter Physics
Nanofluid
Thermal conductivity
Thermal
0202 electrical engineering, electronic engineering, information engineering
Radiative transfer
Optoelectronics
0210 nano-technology
business
Distributed ray tracing
Subjects
Details
- ISSN :
- 00179310
- Volume :
- 128
- Database :
- OpenAIRE
- Journal :
- International Journal of Heat and Mass Transfer
- Accession number :
- edsair.doi...........f5cd2ff09b73cb50a7fa0f70f98f0bc5