研究目的
To conduct a performance study with experiments and TRNSYS simulations for a roll-bond water-type photovoltaic thermal (PVT) collector installed in Chengdu, Sichuan Basin.
研究成果
The study demonstrated the good thermal performance of the roll-bond absorber and the applicability of TRNSYS models for simulating PVT collectors. Type50a was found to be slightly superior to Type560 for predicting electrical output.
研究不足
The long-term system performance is subject to further investigations.
1：Experimental Design and Method Selection:
The study involved experiments and TRNSYS simulations to analyze the performance of a roll-bond water-type PVT collector.
2：Sample Selection and Data Sources:
The PVT collector was installed in Chengdu, Sichuan Basin, with ambient and operation data measured.
3：List of Experimental Equipment and Materials:
The test rig included a PVT module, a water tank, control valves, check valves, and PP-R pipes.
4：Experimental Procedures and Operational Workflow:
Daily performance monitoring was carried out under typical local weather conditions, with data recorded at 1-minute intervals.
5：Data Analysis Methods:
The thermal and electrical performance of the test module was analyzed using measured data and TRNSYS simulations.
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PVT module
Produces electricity as well as heat simultaneously.
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Water tank
Stores hot water produced by the PVT collector.
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Control valves
Controls the flow rate of water through the PVT collector.
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Check valves
Prevents backflow of water in the system.
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PP-R pipe
Connects components of the PVT system.
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Flowrate sensors
Measures the flow rate of water through the PVT collector.
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Resistance temperature detectors
Measures the temperature of water at various points in the system.
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I-V Curve Tracer
Measures the I-V curve of the PVT module.
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Pyranometers
Measures solar irradiance.
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