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Developing an integrated structure for simultaneous generation of power and liquid CO2 using parabolic solar collectors, solid oxide fuel cell, and post-combustion CO2 separation unit

机译:使用抛物线太阳能集热器,固体氧化物燃料电池和后燃烧二氧化碳分离单元同时发生电力和液体二氧化碳的综合结构

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摘要

With decreasing underground resources and increasing carbon dioxide levels, human beings are forced to use renewable energies and new methods for power generation and CO2 elimination. In this paper, an integrated structure is developed for generating power and liquefying CO2 using parabolic solar collectors, solid oxide fuel cell, CO2 power generation cycle, separation unit, and CO2 liquefaction. This integrated structure generates 346.5 kW power, 82.2 kW heat and 158.7 kg/h liquid CO2. The hot flow outlet of the solid oxide fuel cell is used to supply the CO2 power generation cycle and enter the post-combustion CO2 separation unit. The parabolic solar collectors with climatic conditions in Tehran, Iran, are used to supply the heat of integrated structure and the ammonia-water absorption refrigeration cycle is employed to supply cooling for CO2 liquefaction. This integrated structure has a total thermal energy efficiency of 40.81% and SOFC electrical efficiency of 61.71%. Economic analysis is illustrated that the period of return and the prime cost of product are 6.26 years and 0.0855 US$/kWh, respectively. To simulate the developed integrated structure, the TRNSYS, HYSYS, and MATLAB software are used. Then, using the sensitivity analysis, the effects of fuel utilization coefficient, inlet flow temperature on gas turbine and fuel cell temperature on the performance of the integrated structure are investigated.
机译:随着地下资源减少和增加二氧化碳水平,人类被迫使用可再生能量和新的发电和CO2消除方法。本文采用抛物线太阳能集热器,固体氧化物燃料电池,二氧化碳发电循环,分离单元和CO 2液化,开发了一种用于产生功率和液化二氧化碳的集成结构。该集成结构产生346.5千瓦的功率,82.2 kW热量和158.7kg / h液体二氧化碳。固体氧化物燃料电池的热流出口用于提供CO 2发电循环并进入后燃烧的CO2分离单元。抛物线太阳能集热器具有德黑兰,伊朗的气候条件,用于供应集成结构的热量,采用氨吸收制冷循环来供应冷却CO 2液化。这种综合结构总热能效率为40.81%,SOFC电效率为61.71%。经济分析说明了返回期和产品的主要成本分别为6.26岁和0.0855美元/千瓦时。为了模拟开发的集成结构,使用TRNSYS,HYSYS和MATLAB软件。然后,使用灵敏度分析,研究了燃料利用系数,入口流动温度对燃气涡轮机的影响和燃料电池温度对集成结构的性能。

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