【摘要】 通过利用跨临界二氧化碳循环回收利用SOFC/GT系统的余热,提出一种SOFC/GT/TRCC联合循环系统,通过建立该系统的数学模型,根据热力学定律,利用EES软件对该系统进行能量分析,并研究重要参数变化对联合循环系统热力性能的影响。研究结果表明,在额定工况下,该系统能够得到较高的发电效率和效率;系统的总发电效率随着空气流率、燃料流率和蒸汽碳比的增加而降低,随着压缩机压比的增加而增加。更多还原

【Abstract】 A new SOFC/GT/TRCC combined circulatory system was proposed by using transcritical carbon dioxide cycle(TRCC)to recover the waste heat of exhaust from the SOFC/GT. Through the establishment of the mathematical model ofthe system,according to the thermodynamic law,the EES software was used to analyze the energy of the system andstudy the influence of important parameters on the thermodynamic performance of the combined cycle system. Theresearch results indicate that the proposed system can achieve higher power generation efficiency and exergy efficiencyunder the rated conditions,and the total power generation efficiency of the system decreases with increase of air flowrate,fuel flow rate and the steam/carbon ratio,but increases with increase of pressure ratio for compressor.更多还原