Study on Environment-Friendly Energy Conversion Technology

为了在保持甚至发展现有生活方式的同时科普全球变暖，有必要开发一种具有高热效率和产生较少二氧化碳的新型能源系统。虽然能量密度相当低，但太阳能被认为是具有良好潜力的清洁、环境友好的能源。本项目的重点是利用太阳能产生的氢作为燃料的高温、高热效率燃气涡轮机系统。涡轮机叶片冷却技术和氢气燃烧技术作为发展该系统的关键技术而备受关注。来自日本和外国的研究人员相互访问，就氢燃烧、涡轮机叶片冷却、通过回热器或换热器回收热能、固体氧化物燃料电池混合系统的可能性以及MEMS在燃气涡轮机系统中的应用等特定研究主题举行会议，并在此帮助下就下一代清洁能源系统交换意见。虽然这里没有详细介绍每次访问、研究会议和大会的情况，但作为该项目的明显成果，发表了4篇期刊论文，在国际会议上作了14次演讲。从某种意义上说，该项目的另一个可能更有价值的结果是，该项目为研究人员提供了发展和加强该领域研究人员之间的个人联系的机会，在不久的将来，这将继续进一步发展，以实现下一代氢气涡轮机系统。

To cope with the global warming while keeping or even developing the present life style, it is necessary to develop an novel energy system witch has a high thermal efficiency and produces less carbon dioxide. Although the energy density is quite low, the solar energy is recognized to have a good potential as such clean, environmentally friendly energy resource. This project focuses on a high temperature, high thermal efficiency gas turbine system using hydrogen, that is produced by solar energy, as its fuel. Much attention has been paid to the turbine blade cooling and hydrogen combustion technologies as the key factors in developing such system. Researchers from both Japan and foreign countries visited each other, had meeting on particular research topics, such as hydrogen combustion, turbine blade cooling, thermal energy recovery by regenerator or recuperator, possibility of hybrid system with Solid Oxide Fuel Cell and MEMS application in a gas turbine system, and exchanged ideas on the next generation clean energy systems with this aid. Although the details of each visit, research meeting and conference are not described here, four journal papers were published and 14 presentations were made in international conferences as the visible results of this project. Another and perhaps more valuable results of this project, in a sense, is that this project gave opportunities to the researchers to develop and strengthen personal connections among the researchers in this field, which will, in the near future, be continued to make further development to realize this next generation hydrogen gas turbine system.