Low-grade heat sources at 70 °C exist widely in the nature and industrial fields, which require to be exploited effectively for supplying cooling capacity. Recently, a hybrid adsorption refrigeration system using desiccant coated heat exchangers was proposed to improve the energy efficiency of the adsorption system under low-grade heat sources and achieve multi-mode cooling outputs. In essence, this hybrid system aims to improve the evaporation temperature of the adsorption system by incorporating a terminal which decouples the sensible and latent heat load. In order to validate its feasibility and high efficiency, a 3-kW hybrid system is designed and constructed for the first time, and its performance is tested preliminarily at a 70 °C heat source. The transient characteristics is analyzed and the parametric influence on the system performance is discussed. Experimental results indicate that the hybrid system can be effectively driven by a low-grade heat source at 70 °C with a 30 °C coolant. The effects of the inlet air temperature and relative humidity on the system performance are both positive. A moderate air flow rate (wind speed ∼ 1.2 m/s) is suggested to obtain a promising system performance. The cooling capacity and coefficient of performance can reach 3.95 kW and 0.539, respectively. The performance of the hybrid system is also compared with published studies. Results show that the hybrid system possesses a high efficiency in extracting 70 °C heat sources and satisfies the demand for cooling and dehumidification, which is expected to provide a reference for efficient energy utilization.

70℃的低品位热源广泛存在于自然界和工业领域，需要有效利用以提供冷却能力。最近，提出了一种使用干燥剂涂层换热器的混合吸附制冷系统，以提高吸附系统在低品位热源下的能效，实现多模式冷却输出。本质上，这种混合系统旨在通过结合一个终端来提高吸附系统的蒸发温度，该终端将显热和潜热负荷分离。为验证其可行性和高效性，首次设计建造了3kW混合动力系统，并在70℃热源条件下对其性能进行了初步测试。分析了瞬态特性并讨论了参数对系统性能的影响。实验结果表明，混合动力系统可以由 70°C 的低品位热源和 30°C 的冷却剂有效驱动。入口空气温度和相对湿度对系统性能的影响都是积极的。建议使用适度的空气流速（风速 ∼ 1.2 m/s）以获得有希望的系统性能。制冷量和性能系数分别可以达到3.95 kW和0.539。混合系统的性能也与已发表的研究进行了比较。结果表明，混合系统对70℃热源的提取效率高，满足制冷除湿需求，