Volume 1: Proceedings of Applied Energy Symposium: MIT A+B, United States, 2019

Analysis of a Mid-temperature Solar Power System Using Chemical-looping Combustion Hao Zhang, Xiangyu Liu, Qiongqiong Jiang, Hui Hong*, Yali Cao, Hongguang Jin

Abstract

In this paper, a solar hybrid power generation system with chemical looping combustion (CLC) is analyzed. Using concentrated solar thermal energy at about 500℃ as a heat source to drive the endothermic reduction of metal oxide with CH4 in the fuel reactor, and then the metal oxide is transported into the air reactor to be oxidized for regeneration. After that, the flue gas from the air reactor is further drive the gas turbine for power generation. In this paper, the behavior of thermodynamic performance is analyzed. Two important indicators of fuel energy saving ratio (FESR) and exergy efficiency are used to evaluate. The FESR and the exergy efficiency would be expected to reach 34.14% and 49.50%, respectively. At last, the feasibility of the key process was verified by experiments in honeycomb reactor. The oxygen transfer rate and oxygen loss capacity of the reaction process showed exciting performance. Also, the redox stability of oxygen carrier had little changes after repeated cycles.

Keywords solar thermochemical power system, chemical-looping combustion, honeycomb reactor

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