A novel combined cooling and power (CCP) system utilizing liquefied natural gas (LNG) cryogenic energy and low-temperature waste heat was presented. The proposed system consists of two subsystems, absorption refrigeration/power cycle (ARP) subsystem and LNG refrigeration/power cycle (LRP) subsystem. The Rankine cycle and absorption refrigeration cycle were connected in series to form the ARP and they showed mutual enhancement in the integration. The operating performance of the system was calculated and analyzed. And the effects of generator pressure and circulation ratio on the performance were analyzed. Furthermore, a typical application case, in which the proposed system is integrated into the gas-steam combined cycle system as an LNG pre-processing and power enhancement unit, had been studied. The results showed that the net power generation efficiency, comprehensive energy utilization ratio, and exergy efficiency of the proposed CCP system reached 32.70%, 81.63%, and 35.14%, respectively. The feasibility and performance of the integrated system with combined cycle gas turbine were proved. And suggestions for the parameter design were presented.

中文翻译：

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利用液化天然气 (LNG) 低温能和低温废热的新型冷电联合系统的热力学分析

提出了一种利用液化天然气 (LNG) 低温能源和低温废热的新型冷却和电力 (CCP) 联合系统。该系统由两个子系统组成，吸收式制冷/动力循环 (ARP) 子系统和 LNG 制冷/动力循环 (LRP) 子系统。朗肯循环和吸收式制冷循环串联组成ARP，在集成中相互增强。对系统的运行性能进行了计算和分析。并分析了发电机压力和循环比对性能的影响。此外，还研究了一个典型的应用案例，在该案例中，所提出的系统作为 LNG 预处理和功率增强装置集成到燃气-蒸汽联合循环系统中。结果表明，所提出的CCP系统的净发电效率、综合能源利用率和火用效率分别达到32.70%、81.63%和35.14%。证明了联合循环燃气轮机集成系统的可行性和性能。并对参数设计提出了建议。