High cell temperature of PV modules would reduce electrical efficiency and hinder the development of photovoltaic application. Many potential cooling channels have been proposed for PV modules cooling but perform inefficiently, due to the insufficient heat transfer between the cooling water and PV modules. In current research, a PV/T system with a special cooling channel based on field synergy theory, was designed to optimize the performance of PV/T systems. The performance of the new PV/T system was studied numerically, and mathematical models were validated with the experimental data. Results indicated that electrical efficiency of PV modules increased by 0.5% (from 11.4% to 11.9%) when the solar radiation decreased from 1200 to 300 W/m². The electrical efficiency increased 1.11% (from 10.8% to 11.9%) as the inlet mass flowrate of cooling water increased from 0.0018 to 0.018 kg/s at the inlet temperature of cooling water of 20°C. Additionally, the special channel with shark dorsal fin type sawtooth or regular type sawtooth, had the optimal parameter values, with the channel depth of 0.05 m, the sawtooth peak of 0.035 m and the sawtooth width of 0.01 m. The average cell temperature with the optimized channel was 6.05°C lower than the conventional smooth channel, and the new cooling channel performed better with a high solar radiation.

光伏模块的电池温度高会降低电效率并阻碍光伏应用的发展。已经提出了许多潜在的冷却通道用于PV组件的冷却，但是由于冷却水和PV组件之间的传热不足而导致效率低下。在当前的研究中，基于场协同理论设计了具有特殊冷却通道的PV / T系统，以优化PV / T系统的性能。对新型PV / T系统的性能进行了数值研究，并用实验数据验证了数学模型。结果表明，当太阳辐射从1200 W / m ²降低到300 W / m ²时，光伏组件的电效率提高了0.5％（从11.4％增至11.9％）。。当冷却水的入口温度为20°C时，冷却水的入口质量流量从0.0018增至0.018 kg / s，电效率提高了1.11％（从10.8％增至11.9％）。此外，鲨鱼背鳍型锯齿或规则型锯齿的特殊通道具有最佳参数值，通道深度为0.05 m，锯齿波峰为0.035 m，锯齿宽度为0.01 m。优化通道的平均电池温度比常规平滑通道低6.05°C，并且新的冷却通道在高太阳辐射下表现更好。