【摘 要】
：
In order to employ the waste heat effectively, a novel three-stage integrated system based upon a solid oxide fuel cell (SOFC), an alkali metal thermoelectric converter ( AMTEC ) and thermally regenerative electrochemical cycles ( TRECs ) is put forward.
【机 构】
：
College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China
论文部分内容阅读
In order to employ the waste heat effectively, a novel three-stage integrated system based upon a solid oxide fuel cell (SOFC), an alkali metal thermoelectric converter ( AMTEC ) and thermally regenerative electrochemical cycles ( TRECs ) is put forward. Considering the main electrochemically and thermodynamically irreversible losses, the power output and the efficiency of the subsystems and the integrated system are compared, and optimally operating regions for the current density, the power output, and the efficiency of the integrated system are explored. Calculations demonstrate that the maximum power density of the considered system is up to 7466 W/m2 , which allows 18％and 74％higher than that of the conventional SOFC-AMTEC device and the stand-alone fuel cell model, respectively. It is proved that the considered system is an efficient approach to boost energy efficiency. Moreover, the influence of several significant parameters on the comprehensive performance of the integrated system is expounded in detail, including the electrolyte thickness of the SOFC, the leakage resistance of the SOFC, and the area ratio between the SOFC electrode and the AMTEC subsystem.
其他文献
大连市第四中学生物组是一个积极进取的团队,在教育、教学、科研、实践等领域取得了一定的成绩.教研组认真学习国家政策及教育教学理论,主动探索,培养学生的核心素养,形成终身学习的能力,多角度开展学科实践活动,形成了具有四中特色的生物教研组建设策略.
Flexible pressure monitoring device can help correct the sitting posture and prevent health problems (e.g., deformity of spinal column and musculoskeletal disease) . Currently, most measurement systems hinder their wide applications owing to the high cost
在核心素养背景下,教师不仅要在课堂教学中有效指导学生的英文写作,还应引导学生在课外提高自身写作能力.因此,应从小学英语写作课堂教学和课外学习两个方面进行策略的探究.
中学美术教学形式多样化是课程教学的需要,多样化的教学形式能够激发学生美术学习兴趣,提高学生艺术审美能力,激活学生美术创造能力.在美术教学中,教师要选择多样化教学策略,选择生活化教学内容,让教学形式更加适合教学内容,从而提高中学美术教学质量.
教研组建设是学校学科教学研究、教师专业素质提高的重要保证.大连市第七十六中学英语教研组基于“教师共同体”理念,促成教研组各成员拥有共同的愿景、目标和信念,在集备组建设中共同参与、实践,彼此信赖尊重、讨论协商、资源共享,最终由共营实现共赢.
新冠肺炎疫情期间,居家在线教学暴露出学生“五育”行为得不到有效监测等问题.我国中小学在后疫情时代亟须构建以学生“五育融合”发展为目标导向、以数据驱动学习分析为主线、以智能学习环境为载体、以线上线下一体化教育资源为核心、以人机共育为主要教学模式的智能教育生态.
课堂教学有效性是指教师以心理学理论为基础,借助教学载体进行教学,使学生在学的过程中获得发展,进而产生教与学双方的收益.提高课堂教学有效性的关键性因素,包括教师对心理学理论的系统化掌握、教学载体的合理化配置、教学智慧的有效性使用.课堂教学有效性评价要包括学与教两个方面.
从对外汉语课堂教学的有效性出发,阐述了对外汉语课堂教学游戏的定义、特点、分类和原则,为对外汉语课堂的课堂游戏教学指明了方向.
我国学校课程规划工作目前还处在不断探索阶段,运用分析体系对我国D市100所初高中的课程规划方案进行文本分析,优化学校课程规划方案,提升课程方案专业性,构建多样课程群,强化课程实施,统整课程内容,充分挖掘课程资源.
发挥党员教师在教育教学中先锋模范作用是贯彻落实习近平新时代中国特色社会主义思想的迫切需要,是构建和谐美好校园的有力保障.发挥党员教师先锋模范作用要增强党性意识,坚持党建与教育教学相融合,党建与师德师风建设相融合.