A theory based renewable energy sources course was complemented with seven hands-on laboratory experiments. The course was designed for engineering and non-engineering undergraduate students and did not require any advanced mathematics or physics background. Each laboratory experiment introduced a miniature version of an energy conversion device that mimicked the insights and workings of a real...

Demand for hydropower is increasing, yet the water footprints (WFs) of reservoirs and hydropower, and their contributions to water scarcity, are poorly understood. Here, we calculate reservoir WFs (freshwater that evaporates from reservoirs) and hydropower WFs (the WF of hydroelectricity) in China based on data from 875 representative reservoirs (209 with power plants). In 2010, the reservoir W...

The five Nordic countries have aggressive climate and energy policies in place and have already emerged to be leaders in renewable energy and energy efficiency. Denmark is renowned for its pioneering use of wind energy, Finland and Sweden bioenergy, Norway hydroelectricity and Iceland geothermal energy. All countries aim to be virtually “fossil free” by 2050. This study explores the Nordic ener...

From an environmental perspective, electricity grid interconnections in Northeast Asia make sense. Cities in Northeast China, Mongolia, the Democratic People’s Republic of Korea (DPRK), and the Republic of Korea (ROK) suffer from poor air quality due to the extensive use of coal-fired power generation. Rural communities suffer from a deficit of electricity, forcing reliance on coal and biofuels...

Besides saving energy, using it at the right time (i.e. when there is a supply surplus, and the power is produced by sustainable power sources such as hydroelectricity or wind) is an important possibility to achieve positive effects for the environment. To enable the user to align their behavior with the dynamics of the energy generation they need to be informed about the current status of powe...

The availability of the energy has changed humanity over last centuries. first types used by were renewable energies: biomass, wind, and water. But, for two centuries, fossil fuels have been protagonists world consumption. However, recently there an awareness great dependence on a finite resource, geographically concentrated in few countries, which addition to degrading environment, is subject ...

The sector of renewable electricity generation in Asia region countries was comprehensively analyzed. A comparative study has been conducted with bar chart. hierarchical clustering analysis performed for the various types using SPSS software. were clustered into 7 clusters based on total generation. In hydroelectricity Region six groups which India and Turkey are taking lead. Wind four found Co...

Hydropower accounts for about 16 % of the world’s electricity supply. It has been debated whether hydroelectric generation is merely an in-stream water user or whether it also consumes water. In this paper we provide scientific support for the argument that hydroelectric generation is in most cases a significant water consumer. The study assesses the blue water footprint of hydroelectricity – t...

The invasion of water hyacinth (Eichhornia crassipes) has resulted in enormous ecological and economic consequences worldwide. Although the spread of this weed in Africa, Australia, and North America has been well documented, its invasion in China is yet to be fully documented. Here we report that since its introduction about seven decades ago, water hyacinth has infested many water bodies acro...