Notes and Study material for Exams
Harnessing the Sun: A Deep Dive into Photovoltaic Electricity The sun, a celestial powerhouse, has been a source of fascination and wonder for humanity since time immemorial. Its radiant energy, a gift from the cosmos, has fueled life on Earth for billions of years. Now, in an era defined by the urgent need for sustainable … Read more
Grants to Local Governments: A Vital Lifeline for Communities Local governments play a crucial role in providing essential services to their residents, ranging from public safety and infrastructure to education and social welfare. However, these services often come with significant financial burdens, especially in the face of limited tax revenue and increasing demands. Grants from … Read more
What is a Fuel Cell? A fuel cell is an electrochemical device that converts chemical energy from a fuel into electrical energy and heat. Fuel cells are similar to batteries in that they both convert chemical energy into electrical energy, but fuel cells do not run down and need to be recharged. Instead, they can … Read more
Renewable energy is energy that comes from natural sources or processes that are constantly replenished. Renewable energy sources include sunlight, wind, rain, tides, waves, and geothermal heat. Renewable energy is becoming increasingly important as the world looks for ways to reduce its reliance on fossil fuels. Fossil fuels are non-renewable resources that are finite and … Read more
What is Cogeneration? Cogeneration is the simultaneous production of two useful forms of energy, such as electricity and heat, from a single fuel source. This is in contrast to conventional power plants, which only produce electricity. Cogeneration can be used in a variety of applications, including hospitals, hotels, schools, and manufacturing facilities. How does Cogeneration … Read more
What is Geothermal Energy? Geothermal energy is heat from the Earth’s interior that can be used to generate electricity, heat homes and businesses, and provide hot water. The Earth’s core is very hot, about 6,000 degrees Fahrenheit (3,300 degrees Celsius). This heat comes from the decay of radioactive elements in the core. The heat travels … Read more
Combustion/Incineration Combustion is a chemical reaction that occurs between a fuel and an oxidizer, releasing heat and light. The most common type of combustion is the burning of fossil fuels, such as coal, oil, and natural gas. Combustion is also used in many industrial processes, such as the production of electricity and the manufacture of … Read more
Tidal energy is a form of hydropower that extracts energy from the rise and fall of tides. It is a renewable energy source that has the potential to provide a significant amount of electricity. Tidal energy is currently being harnessed in a number of countries around the world, and there is potential for further development … Read more
Anaerobic digestion is a process that converts organic waste into biogas and digestate. Biogas is a renewable energy source that can be used to generate electricity, heat, or fuel vehicles. Digestate is a nutrient-rich soil amendment that can be used to improve crop yields. Anaerobic digestion is a natural process that occurs in the absence … Read more
What is a pumped storage hydro power plant? A pumped storage hydro power plant is a type of hydroelectric power plant that uses two reservoirs at different elevations to store water. During periods of low demand for electricity, water is pumped from the lower reservoir to the upper reservoir. When electricity demand is high, the … Read more