- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | CUI Yuanlong, ZHU Kefeng. Performance Study of Novel PV/T System Integrated with Micro-Channel Heat Pipe Module[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20250491
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Aiming at the problem that the photoelectric and photothermal conversion performance of photovoltaic/thermal (PV/T) systems is still constrained by low winter temperatures in cold regions of northern China, this paper proposes a novel solar photovoltaic/thermal integrated system integrated with a micro-channel heat pipe array and evaluates its energy conversion performance under actual operating conditions. The system consists of a PV module, an aluminum micro-channel heat pipe array using R141b as the working fluid, and a U-shaped manifold heat exchanger. Indoor experiments determine that the optimal mass flow rate of cooling water in the U-shaped manifold heat exchanger is 0.025 kg/s, achieving a balance between energy conversion efficiency and circulating pump energy consumption. Based on multi-day outdoor experiments, the temperature distribution and energy conversion performance of the system in winter and summer are investigated, as well as its net energy conversion performance when circulating pump energy consumption is considered. The experimental results of two days with representative weather conditions show that under winter outdoor conditions, the thermal efficiency, net electrical efficiency, and net overall efficiency of the system are 27.21%, 10.41%, and 37.62%, respectively; the average daily net overall energy output is 376.53 W, including a net electrical output of 127.54 W and a thermal output of 248.98 W. Under summer operating conditions, the corresponding thermal efficiency, net electrical efficiency, and net overall efficiency can reach 47.42%, 8.55%, and 55.97%, respectively; the average daily net overall energy output is 643.71 W, including a net electrical output of 110.49 W and a thermal output of 533.22 W. The experimental results show obvious seasonal performance differences.
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