write a conclusion on non conventional source of energy
Answers
Non-Conventional Energy Resources
As the demand for power and energy is increasing rapidly and depletion of natural resources is taking place with the same pace, the emergence of environmental friendly and pollution free non-conventional energy resources has become a viable alternative. The non-conventional energy resources like solar energy through thermal as well as photovoltaic systems, wind energy, bio mass, hydal energy and industrial and household wastes will help the economy to a great extent in enhancing the power generation capacity and energy needs of different sectors. The following is a brief presentation of the renewable sources of energy.
Solar Energy:
India has a locational advantage in receiving abundant radiant energy form the sun as it is located in the equatorial sun belt of the earth. Majority of the Indian continent is bestowed with clear sunny weather in all most 280-300 days of a year. Daily solar energy incident over India varies from 4-7 KWH per square meter depending on the region. Solar energy can be used in two ways:
Solar Thermal Conversion: Conversion of solar energy into heat using devices of steel, copper, aluminum is called solar-thermal conversion. A solar thermal device captures and transfers the heat energy available in the solar radiation. The energy generated can be used for varied applications in the household and industrial sectors like water heating systems, air heating systems, cooking and other household utilities.
Solar Photovoltaic Conversion: This is the conversion of solar energy into electricity using semi conductors and their hybrids to convert the solar energy into Direct Current form of electricity for the application of DC and AC. The electricity thus generated can be used to needs of home lighting, street lighting and running motor pumps etc. The direct current form of solar energy is a major technical consideration for SPV application.
Wind Energy:
The evolution of windmills to convert wind power into energy, using wind turbines dates back to the beginning of the century. Denmark was the first country to install the first windmill for the generation of electricity. Later many countries entered into the field of wind energy. India started operations during 1983-84. The technology involves generation of electricity using turbines, which converts mechanical energy from the wind mills and is mainly used for pumping water from bore wells, open wells etc .However, average wind speed is major technical consideration to harness wind energy depending upon the climatic conditions and geographical locations of the project.
Bio mass and other Bio energy systems:
Bio mass is yet another renewable source of energy with potential to generate power to the extent of more than 50% of the requirements our country. Indian economy is predominantly an agricultural based economy with the availability of huge quantities of biomass available in the form of husk, straw, shells of coconuts and of wild bushes etc. Bio mass resources include large quantities cattle dung and other organic wastes. The biomass resources can be used for production of thermal energy or electricity. It can also be used to produce gas that may be used for combustion and to run gas engines.
Small Hydro Power
Hydropower is tapped from running waterfalls, canals and other water streams containing relatively small quantities of water but with some force of falling. The force of falling and flowing water can be converted into electricity by using turbines. This is a cheaper and abundant source on energy in our country. It is estimated that nearly 15,000 MW of power can be generated with the potential of the small hydro projects in the country. This power can be used to meet the requirements of the vicinity areas of the water streams like agro processing and milling.
Industrial and other Wastes:
These projects utilize the municipal and industrial wastes which has a problem for their disposal. The cleanliness of urban and industrial areas are achieved by utilizing these wastes as raw material to generate power. Wastes from the household, agricultural and industrial sectors are utilized to produce electricity. Industrial wastes from sago manufacturing units; sugar manufacturing units, poultries and others can be effectively used to produce power. This is a source of cheaper and renewable energy source available in India. Production of gases can also be undertaken using the wastes.