研究目的
Evaluating the performance of the double-pass hybrid Photovoltaic-Thermal (PVT) solar system proposed for drying purposes theoretically and experimentally.
研究成果
A mathematical model of the electrical and thermal performance was presented in this study; also, the predicting of results were simulated by utilizing MATLAB program. The comparison between the theoretical and experimental results has been proven. The double pass technology and adding fins were applied in the PVT system for two reasons, firstly, to raise the heat extraction from the absorber plate and secondly, to increase the surface area to transfer further heat from plate to fluid. The maximum temperature difference between input and output airflow was 19°C at a low mass flow rate 0.017 kg/s which considers acceptable temperature to supply the solar dryer. In addition, the results indicated that the maximum electrical and thermal efficiencies of the PVT system were 12.65% and about 56.73%, respectively, at a higher mass flow rate about 0.031 kg/s.
研究不足
The study focuses on the performance evaluation of a specific hybrid PVT solar system for drying applications, and the results may vary under different environmental conditions or with different system configurations.
1：Experimental Design and Method Selection:
The hybrid PVT system with the solar dryer was modeled. The electrical characteristics of the PV module depend on a single diode have been carried out by using the MATLAB SIMULINK 2015b. The energy balance equations were applied to the different sections of the PVT system components with solar dryer room to evaluate the temperature of PV cell, absorber plate, backplate, output fluid, and dryer chamber respectively and estimate the useful heat gain, thermal efficiency, and overall efficiency.
2：5b. The energy balance equations were applied to the different sections of the PVT system components with solar dryer room to evaluate the temperature of PV cell, absorber plate, backplate, output fluid, and dryer chamber respectively and estimate the useful heat gain, thermal efficiency, and overall efficiency. Sample Selection and Data Sources:
2. Sample Selection and Data Sources: The system consists of 32 solar cells of a monocrystaline silicon that connects in series as the PV module and surrounds double glass covers from the top and below of PV cells.
3：List of Experimental Equipment and Materials:
The components of the proposed PVT solar system with the dryer chamber include a DC fan, solar collector, backplate, insulating layer, and solar dryer.
4：Experimental Procedures and Operational Workflow:
The experimental work starts with measure the solar radiation, ambient air, and wind velocity by utilizing solar power meter, temperature sensor, and speed meter. Further, the DC fan is operated by the PV module and set the speed of fan at a convenient mass of airflow by using voltage regulator to control in fan speed.
5：Data Analysis Methods:
The thermal and electrical behavior of PVT system with dryer solar system is measured by utilizing the measurement devices.
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