Bøger af Zhe Chen

This book offers a collection of papers presented at the 2023 6th International Conference on Green Energy and Environment Engineering (CGEEE 2023), held during July 21-23, 2023 in Jeju Island, Korea. Recent studies, promising ideas and new challenges are discussed among environmental engineers, economists and social scientists, demonstrating new paradigms for problem solving and decision making. The book provides researchers and practitioners in the field of in green energy and environmental science with the latest, cutting-edge thought and research in the field. It will appeal to readers interested in these fields, especially those who are looking for new ideas and research directions.

This book consists of selected and peer-reviewed papers of 2022 5th International Conference on Green Energy and Environment Engineering (CGEEE 2022), held in Jeju Island, Korea during July 28-30, 2022. CGEEE 2022 provides a forum for researchers and practitioners in the field of green energy and environment engineering to share ideas, designs, and experiments results. Various topics are covered in this book, such as carbon capture and storage, solar energy, biomass, biofuel, geothermal, sustainable cities, energy savings for vehicular technology, solid waste management, waste minimization, water treatment and reclamation, environmental restoration, and ecological engineering. This book will be beneficial to researchers, educators, practitioners, and policymakers working in the related fields.

Wind energy is now the world's fastest growing energy source. In the past 10 years, the global wind energy capacity has increased rapidly. The installed global wind power capacity has grown to 47.317 GW from about 3.5 GW in 1994. The global wind power industry installed 7976 MW in 2004, an increase in total installed generating capacity of 20%. The phenomenal growth in the wind energy industry can be attributed to the concerns to the environmental issues, and research and development of innovative cost-reducing technologies. Denmark is a leading producer of wind turbines in the world, with an almost 40% share of the total worldwide production. The wind energy industry is a giant contributor to the Danish economy. In Denmark, the 3117 MW (in 2004) wind power is supplied by approximately 5500 wind turbines. Individuals and cooperatives own around 80% of the capacity. Denmark will increase the percentage of energy produced from wind to 25% by 2008, and aims for a 50% wind share of energy production by 2025. Wind technology has improved significantly over the past two decades, and almost all of the aspects related to the wind energy technology are still under active research and development. However, this monograph will introduce some basics of the electrical and power electronic aspects involved with modern wind generation systems, including modern power electronics and converters, electric generation and conversion systems for both fixed speed and variable speed systems, control techniques for wind turbines, configurations of wind farms, and the issues of integrating wind turbines into power systems. P

This story of parents, students, and teachers resisting not only high-stakes testing but also privatization and other corporate reforms parallels the rise of teachers across America going on strike to demand increases in school funding and teacher salaries.