A novel double-effect/two-stage compression-assisted absorption thermal energy storage system using LiNO₃-[BMIM] (1-butyl-3-methylimidazolium) NO₃/H₂O for combined cooling and heating is proposed to enhance thermal performance under a larger concentration glide without crystallization. The thermodynamic calculation is conducted by Matlab based on the measured thermophysical properties, and its performance is compared with that of a system using other working fluids. The results show that this proposed system using LiNO₃-ionic liquids/H₂O with compressor assistance achieves a higher coefficient of performance and energy storage density at a larger concentration glide without crystallization. In comparison to LiBr/H₂O, the generation temperature of this system using LiNO₃-ionic liquids/H₂O is reduced by over 50 K at a larger concentration f, which is beneficial for the utilization of solar energy. As the discharging temperature increases from 321.15 K to 333.15 K and f from 0.08 to 0.20, this novel system using LiNO₃-[BMIM]NO₃/H₂O obtains the largest coefficient of performance of 1.36 and exergetic coefficient of performance of 0.46 at generation temperature below 354.2 K, compared to LiNO₃/H₂O and LiNO₃-[DMIM][DMP]/H₂O. Moreover, the maximum energy storage density based on LiNO₃-[BMIM]NO₃/H₂O reaches 695.4 kJ/kg at a discharging temperature of 333.15 K and a f of 0.20. In comparison to the existing absorption thermal energy storage systems, the proposed system using LiNO₃-[BMIM]NO₃/H₂O also shows outstanding performance in various aspects. This new system with the LiNO₃-[BMIM]NO₃/H₂O alternative working fluid has a great potential for utilizing solar energy for combined cooling and heating.

提出了一种新型的LiNO _3- [BMIM]（1-丁基-3-甲基咪唑鎓）NO ₃ / H ₂ O联合制冷和加热的双效/二级压缩辅助吸收式热能存储系统，以提高热性能。在较大浓度下滑行而不会结晶。Matlab根据测得的热物理性质进行热力学计算，并将其性能与使用其他工作流体的系统的性能进行比较。结果表明，该提议的系统使用LiNO _3-离子液体/ H ₂带压缩机辅助的O在更大的浓度滑移下不会结晶，从而获得更高的性能系数和能量存储密度。与LiBr / H ₂ O相比，使用LiNO ₃离子液体/ H ₂ O的该系统的产生温度在较大的浓度f下降低了50 K以上，这有利于太阳能的利用。随着放电温度从321.15 K升高到333.15 K，f从0.08升高到0.20，使用LiNO _3- [BMIM] NO ₃ / H _2的新系统与LiNO ₃ / H ₂ O和LiNO _3- [DMIM] [DMP] / H ₂ O相比，在354.2 K以下的发电温度下，O获得的最大性能系数为1.36，高能性能系数为0.46 。基于LiNO _3- [BMIM] NO ₃ / H ₂ O的能量存储密度在333.15K的放电温度和0.20的f下达到695.4kJ / kg 。与现有的吸收式热能存储系统相比，所提出的使用LiNO _3- [BMIM] NO ₃ / H ₂ O的系统在各个方面也表现出优异的性能。带有LiNO的新系统_3- [BMIM] NO ₃ / H ₂ O替代性工作流体在利用太阳能进行联合冷却和加热方面具有巨大潜力。