研究目的
To present a fully-coupled 3D numerical simulation model involving the optical, thermal and electric characteristics of CPC-PV/T systems for accurate performance evaluation.
研究成果
The 3D numerical simulation model effectively combines optical, thermal, and electric characteristics for CPC-PV/T systems. The Z-type heatsink design improves performance over the U-type, and the choice of coolant has minimal impact on system efficiency. The hybrid system shows significant economic benefits compared to standalone PV systems.
研究不足
The study assumes quasi-steady state conditions and neglects thermal contact resistance and gravitational force effects. The computational cost is high due to the detailed 3D modelling.
1:Experimental Design and Method Selection:
A finite volume (FV)-CFD code was employed to simulate the entire model, including optical, thermal, and electric performance. The optical modelling was validated theoretically with the Monte Carlo ray-tracing method.
2:Sample Selection and Data Sources:
The study utilized a low concentrated photovoltaic/thermal system with a heat transfer fluid as the cooling medium and a compound parabolic concentrator as the mirror field.
3:List of Experimental Equipment and Materials:
The system components included CPC reflectors, a polycrystalline PV-cell, an absorber substrate, and a heatsink. Various heatsink designs (U-type and Z-type) and coolants (water, ethylene glycol, and therminol VP-1) were investigated.
4:Experimental Procedures and Operational Workflow:
The system was simulated under low concentration (CR=2.4X) conditions. The non-gray DO model was applied to divide the solar spectrum into different bands for accurate analysis.
5:4X) conditions. The non-gray DO model was applied to divide the solar spectrum into different bands for accurate analysis.
Data Analysis Methods:
5. Data Analysis Methods: The thermal and electric performances were evaluated based on the simulated data, comparing different heatsink designs and coolants.
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