Abstract The solar absorption refrigeration technology plays a major role in the building energy saving and emission reduction. According to the concept of energy cascade utilization, this paper proposes a novel solar absorption/dual compression hybrid refrigeration (SADC-HR) system, which consists of solar-driven single effect absorption refrigeration (SSAR) subsystem and power-driven dual-source dual-compression refrigeration (PDCR) subsystem. An air-cooled compression refrigeration (ACR) cycle is integrated with the water-cooled compression refrigeration (WCR) cycle to make up the PDCR subsystem, so as to satisfy the all-weather space cooling/heating demand. The SADC-HR system achieves the cascade production and utilization of cold energy for the temperature and humidity independent control air conditioning system. The thermodynamic model of the SADC-HR system is built to evaluate the system performance and operating parameters, and the comparisons with two conventional systems are also discussed. The results indicate that there are optimum generating temperature of 70 °C and optimum evaporating temperature of 18 °C for the SSAR subsystem to obtain the lowest power consumption at low solar intensity of 450 W/m2. The SADC-HR system also exhibits better economic performance, and its solar collector area is respectively 55.79% and 34.75% lower than that of the conventional SSAR system and solar absorption-compression cascade refrigeration (SA-CCR) system at low solar intensity of 450 W/m2. In addition, the proposed system shows the better energy-saving performance as well as a smaller environmental impact, whose power consumption is reduced by 61.47% compared with the conventional SA-CCR system at solar intensity of 800 W/m2, and the present case study demonstrates that total seasonal electricity consumption in the SADC-HR system decreases a value of 25.32% which corresponds to a decline of 21580.66 kg of CO2 emission in comparison with the conventional ACR system.

中文翻译：

---

温湿度独立控制应用的太阳能吸收/双压缩混合制冷系统方案及参数研究

摘要 太阳能吸收式制冷技术在建筑节能减排中发挥着重要作用。根据能源梯级利用的概念，本文提出了一种新型太阳能吸收/双压缩混合制冷（SADC-HR）系统，它由太阳能驱动的单效吸收式制冷（SSAR）子系统和动力驱动的双源双源制冷系统组成。 - 压缩制冷 (PDCR) 子系统。风冷压缩制冷（ACR）循环与水冷压缩制冷（WCR）循环集成组成PDCR子系统，满足全天候空间制冷/制热需求。SADC-HR系统实现了温湿度独立控制空调系统冷能的梯级生产和利用。建立了 SADC-HR 系统的热力学模型来评估系统性能和运行参数，并讨论了与两种常规系统的比较。结果表明，SSAR子系统的最佳发电温度为70°C，最佳蒸发温度为18°C，以在450 W/m2的低太阳能强度下获得最低的功耗。SADC-HR系统也表现出更好的经济性能，其太阳能集热器面积分别比传统SSAR系统和太阳能吸收-压缩复叠制冷（SA-CCR）系统在450的低太阳能强度下降低了55.79%和34.75%。瓦/平方米。此外，所提出的系统显示出更好的节能性能以及更小的环境影响，其功耗降低了61。