研究目的
Investigating the annual energy yield of a rotationally asymmetrical optical concentrator (RADTIRC) for building integrated photovoltaic (BIPV) systems in Berlin/Brandenburg, Germany.
研究成果
The RADTIRC-PV module showed an increased annual energy yield by a factor of 2.29 compared to a non-concentrating PV module in Berlin/Brandenburg. The concentrator's performance is influenced by the angle of incidence and the proportion of diffuse irradiance. Adjustments to the concentrator parameters and tilt angle are suggested for improved performance.
研究不足
The study did not differentiate the contribution from direct nor diffuse solar irradiance to the electrical output of the concentrator due to lack of equipment. Also, losses due to manufacturing errors, misalignment during assembly process, dust and soil accumulation, shadowing etc., were not taken into consideration.
1：Experimental Design and Method Selection:
The study involves simulation and experimental work to determine the optical concentration gain of the RADTIRC under direct and diffuse radiations.
2：Sample Selection and Data Sources:
The RADTIRC design is assumed to be installed in Berlin/Brandenburg, Germany.
3：List of Experimental Equipment and Materials:
The study uses a MATLAB code for visualizing and investigating the geometrical properties of the RADTIRC design.
4：Experimental Procedures and Operational Workflow:
The performance of the concentrator is evaluated under direct and diffuse irradiance, with calculations based on the same volume of PV material used in both CPV and PV modules.
5：Data Analysis Methods:
The yearly energy yield is calculated using a formula that considers the area of the PV material, solar cell efficiency, solar irradiation, and optical concentration gain.
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