Photocatalytic water splitting for hydrogen production provides a promising route for the future hydrogen economy, being operational in the visible light domain with a potential use of solar radiation. An outdoor pilot demonstration of CPC-based photoreactors has been designed, installed and tested at the State Key Laboratory of Multiphase Flow in Power Engineering to assess its effectiveness in solar photocatalytic hydrogen production. Nine sets of CPC-based photoreactors, each of which is 3.6 m² in area and 23 L in volume, are connected, controlled and operated in parallel. The high efficiency photocatalyst (Cd_1-xZn_xS), low concentration sacrifice agents (Na₂S and Na₂SO₃) and deionized water are the raw materials of the pilot system. Two operation models, viz. the natural circulation model and the gas disturbance model, are proposed considering the expense and the efficiency. From our observations, the slurry temperature inside the tubes rises by 20–30 °C from the ambient. The slurry velocity can reach 1.2 m/s in the gas disturbance model, but is as low as 3.5 cm/s in the natural circulation model. The average hydrogen productivity is 184.30 mL/min and accumulated to be 10.321 L/h in the natural circulation model, with the average solar radiation, photocatalyst concentration and sacrifice agents' concentration being 803.8 W/m², 2.77 g/L and 0.1 mol/L, respectively.

用于制氢的光催化水分解法为未来的氢经济性提供了一条有希望的途径，它可以在可见光范围内运行，并有可能利用太阳辐射。已在动力工程多相流国家重点实验室设计，安装和测试了基于CPC的光反应器的户外试验示范，以评估其在生产太阳能光催化制氢方面的有效性。并联连接，控制和操作9套基于CPC的光反应器，每套面积分别为3.6 m ²和23L。高效光催化剂（Cd _1-x Zn _x S），低浓度牺牲剂（Na ₂ S和Na ₂ SO ₃）和去离子水是中试系统的原材料。两种操作模型，即。考虑到费用和效率，提出了自然循环模型和瓦斯扰动模型。根据我们的观察，管内的浆料温度会比环境温度升高20–30°C。在气体扰动模型中，泥浆速度可以达到1.2 m / s，而在自然循环模型中，泥浆速度可以低至3.5 cm / s。平均氢气生产率184.30毫升/分钟和积累是10.321 L /自然循环模型小时，用平均太阳辐射，光催化剂浓度和牺牲剂的浓度为803.8瓦/米²，2.77克/升和0.1摩尔/ L。