Heat Recuperation for the Self-Condensing CO_(2)Transcritical Power Cycle
作者机构：State Key Laboratory of High-temperature Gas DynamicsInstitute of MechanicsChinese Academy of SciencesBeijing 100190China School of Environment and Energy EngineeringBeijing University of Civil Engineering and ArchitectureBeijing 100044China
出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)
年 卷 期：2024年第33卷第5期
页 面：1630-1641页
核心收录：
学科分类：080702[工学-热能工程] 08[工学] 0807[工学-动力工程及工程热物理]
基 金：Projects 51776215 and 12372237 supported by National Natural Science Foundation of China
主 题：CO_(2)transcritical power cycle heat recuperation process self-condensing
摘 要：The supercritical CO_(2)Brayton cycle has potential to be used in electricity generation occasions with its advantages of high efficiency and compact *** on a so-called self-condensing CO_(2)transcritical power cycle,a model was established and four different layouts of heat recuperation process were analyzed,a without-recuperation cycle,a post-recuperation cycle,a pre-recuperation cycle and a re-recuperation *** results showed that the internal normal cycle s share of the whole cycle increases with increasing the cooling pressure and decreasing the final cooled *** load in the supercritical heater decreases with increasing the cooling *** perspective of performance,the re-recuperation cycle and the pre-recuperation cycle have similar thermal efficiency which is much higher than other two *** thermal efficiency and net power output have a maximum value with the cooling pressure,except in the condition with the final cooled temperature of 31℃.Considering both the complexity and the economy,the pre-recuperation cycle is more applicable than the other *** 35℃of the final cooled temperature,the thermal efficiency of the pre-recuperation cycle reaches the peak 0.34 with the cooling pressure of 8.4 MPa and the maximum net power output is 2355.24 kW at 8.2 MPa of the cooling pressure.
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