Tag Archives: Alternative Energy

Five New Advancements in Solar Cells

The earth receives a huge amount of sunlight every hour. Converted to electricity, this would amount to 52 PW/hr. This is more than ten times the entire amount of electricity produced per hour by China in 2013. In the same year, top countries of the world together produced only 16 PW/hr. of electricity. As this is much less than the actual potential of generation of electricity from the solar energy falling on the planet earth, several countries are actively engaged on research and development on Read more [...]

How Do Wind Turbines Work?

Wind turbines generate electricity from moving winds. You can see them in large numbers on wind farms both onshore and offshore. The blowing wind turns their blades, and rotates the shaft on which the blades are mounted. The shaft in turn, operates an electric generator and the resulting electric output is sometimes stored in a battery. A swarm of wind turbines can generate a substantial amount of energy. Wind turbines are often called a renewable source of energy, as they generate power from natural Read more [...]

Metamaterial Cools Buildings without Using Energy

Engineers at the University of Colorado Boulder have built a metamaterial that can be used to cool structures without drawing on any energy. The material can also cool objects placed in direct sunlight without using water. A metamaterial is an artificial substance with remarkable properties not possessed by natural substances. According to Xiabo Yin, an assistant professor at Colorado Boulder and a director of the research, the new metamaterial could be a game changer in the field of radiative Read more [...]

Energy Harvesting – How & Why

What Is Energy Harvesting - Why Is It Needed? The process of extracting small quantities of energy from one or more natural, inexhaustible sources, accumulation and storage for subsequent use at an affordable cost is called Energy Harvesting. Specially developed electronic devices that enable this task are termed Energy Harvesting Devices. The world is facing acute energy crisis and global warming, stemming from rapid depletion of the traditional sources of energy such as oil, coal, fossil Read more [...]

Generating Energy: The future of clothing

We think of clothing as something to keep us warm, or as a way to show our individuality and fashion sense. But have you ever thought about your clothing as a source of energy? Researchers at the University of California at Berkeley are working on a way to embed nanotechnology into clothing to harness energy as we perform our routine daily tasks such as walking and exercising. The nano-electric fibers are so small, they are invisible to the naked eye. One day, researchers believe that clothing Read more [...]