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本文提出了中温太阳能与二甲醚-氧化钴化学链燃烧整合的新颖冷热电联产系统,并对系统热力性能及关键参数对系统热力性能的影响进行了分析。研究表明,燃气透平入口初温(TIT)1000℃,压比8.8时,新系统的总能效高达92.6%。在输出量相同的情况下,新系统的化石能源节能率达29.3%,太阳能集热面积节省率可达69.8%。同时,采用热重分析仪对系统关键过程—二甲醚-氧化钴化学链燃烧开展了初步的实验研究,验证了新系统的可行性。
In this paper, a novel CCHP system integrating medium-temperature solar energy with dimethyl ether-cobalt oxide chemical chain combustion is proposed. The effects of the system thermal performance and the key parameters on the thermal performance of the system are also analyzed. The research shows that the total energy efficiency of the new system reaches as high as 92.6% when the gas turbine inlet initial temperature (TIT) is 1000 ℃ and the pressure ratio is 8.8. In the case of the same output, the new system saves 29.3% of the fossil energy and saves 69.8% of the solar collector area. At the same time, the thermogravimetric analyzer was used to carry out the preliminary experimental study on the chemical combustion of dimethyl ether-cobalt oxide, which is the key process of the system. The feasibility of the new system was verified.