ENERGY CONSERVATION (PART-1)
WHAT IS ENERGY CONSERVATION ? Energy is all around us. It's flowing in our bodies, flying through the air, and beating down on us from the sun. It's everywhere. But what exactly 'is' energy? And how is it conserved?' . The physics definition says that energy is a currency that allows you to do work. Work is done when you apply a force over a distance, or transfer energy from one place to another. So, all that really says is that energy allows you to transfer it, and to do that, you apply a force . Energy conservation is the decision and practice of using less energy. Turning off the light when you leave the room unplugging applian es when they're not in use and walking instead of driving are all exampl s of energy conservation The two main reasons people conserve energy are to gain more control over their energy bill and reduce the demand on the earth's natural resources
Energy can be conserved by reducing wastage and losses, improving efficiency through technological upgrades and improved operation and maintenance. On a global level energy use can also be reduced by the stabilisation of population growth. Energy can only be transformed from one form to other, such as heat energy to motive power in cars, or kinetic energy of water flow to electricity in hydroelectric power plants. . According to 1st law of thermodynamics "energy can neither be created nor be destroyed, it can only transform from one from to another"
Source of Energy Conservation Following are the various sources of energy: . 1. Surn . 2. Wind (wind mill) 3. Moving water (hydro electric projects) * 4. Fuels (Wood/coal/oil/natural gas) 5. Nuclear fuels . 6. Electricity . 7. Geothermal energy.
Classification of sources of energy Sources of energy can be of two types - those which are limited and will be exhausted after using for a certain number of years; and the second type which have a nearly endless supply. . Renewable means anything which that can be replaced endlessly, i.e. there is an endless supply . Non-renewable means something which can be replaced up to a limited period after which its supply runs out
Renewable energy sources .You know that there will be an endless supply of solar energy. We will have the energy of moving wind and water so long as the sun is there. Rocks deep inside the earth have trapped the sun's energy but if we use this geothermal energy at a faster rate than it is being trapped, it may also prove to be a non-renewable source of energy But there is no immediate danger of this happening as estimates predict that energy will last for a long, long time to come Renewable energy sources includes * 1.sun . 2.wind 3.water . 4.geothermal
Non-renewable ener esources Fuels like coal, oil and natural gas have taken millions of years to be formed. But the rate at which coal is being mined and oil drilled for meeting our energy requirements, is much faster than the rate at which they are being formed. Hence, existing supplies are fast running out. Electricity is produced by burning fuels like coal or oil, by using the energy of flowing water or of steam or by using nuclear fuels. You may arque that since fuels are limited in supply, we can always switch to producing electricity by using flowing water. In that case, electricity would then be a renewable source of energy. But this is not actually so because hydroelectric projects have already been set up at most of the possible sites on major rivers in the country. These power projects are already producing electricity to their maximum capacity and there are no prospects of increasing the supply of electricity to meet increased demand. Hence, electricity, too, becomes a non-renewable source of energy. Today. nuclear fuels are also being used to produce electricity but we have to remember that supply of all nuclear fuels ar limited and if they are used unwisely they will soon run out. Non renewable energy resources are; 1. fossil fuel 2. wood .3. nuclear fuel 4. electricity
Student of BSc(hons) Botany in DU. Love to read, write and draw. "Pursuing dream with goal to accomplish them".