ENERGY: THE PRESENT AND THE FUTURE SCENARIO
A report
CONTENTS
S.NO | TOPIC | PAGE NUMBER | 1. | INTRODUCTION TO ENERGY | 3 | 2. | FORMS OF ENERGY | 4 | 3. | DIFFERENT TYPES OF RENEWABLE ENERGY * SOLAR ENERGY * HYDEL ENERGY * WIND ENERGY * BIOMASS ENERGY * GEOTHERMAL ENERGY * FUEL CELLS ENERGY * CO-GENERATION | 5581012141518 | 4. | DIFFERENT TYPES OF NON-RENEWABLE ENERGY * COAL * OIL AND GAS | 181822 | 5. | NUCLEAR ENERGY | 24 | 6. | FUTURE OF ENERGY | 27 | 7. | CONSERVATION OF ENERGY | 29 |
INTRODUCTION TO ENERGY
Energy lights our cities, powers our vehicles, and runs machinery in factories. It warms and cools our homes, cooks our food, plays our music, and gives us pictures on television.
Energy is defined as the ability or the capacity to do work.
We use energy to do work and make all movements. When we eat, our bodies transform the food into energy to do work. When we run or walk or do some work, we ‘burn’ energy in our bodies. Cars, planes, trolleys, boats, and machinery also transform energy into work. Work means moving or lifting something, warming or lighting something. There are many sources of energy that help to run the various machines invented by man. The discovery of fire by man led to the possibility of burning wood for cooking and heating thereby using energy. For several thousand years human energy demands were met only by renewable energy sources—sun, biomass (wood, leaves, twigs), hydel (water) and wind power. As early as 4000–3500 BC, the first sailing ships and windmills were developed harnessing wind energy. With the use of hydropower through water mills or irrigation systems, things began to move faster. Fuelwood and dung cakes are even today a major source of energy in rural India. Solar energy is used for drying and heating.
With the advent of the Industrial Revolution, the use of energy in the form of fossil fuels began to grow as more and more industries were