• Renewable energy development scenario in India

    Jan 2017 / by M. M. MADAN and SOUVIK KHAMRUI

    It is now a well-recognized fact that availability of electric power is an essential requirement for the development of a nation and the fact is very much applicable to India. India depends vastly on fossil fuel based power generating stations to meet its ever growing power demand. To meet future energy demands over the next few years, enhance its energy security and also adhere to the international climate change commitment, India needs to strive for a cleaner energy mix with an increased dependence on renewables. As on 31st August 2016, the total installed power capacity in India is 3,06,383 MW out of which renewable energy accounts for merely 15% (45,065 MW). Thermal power contributes 69%, hydro 14% and nuclear 2% to the total installed capacity in India. These existing ratios of energy mix are inappropriate to have efficient and balanced grid operation. Development of renewable energy including large hydropower projects could bring enhanced stability and efficiency in the grid. Renewable energy is the best form of energy security. The renewable resources are getting wasted every day being not utilized as these sources cannot be stored for future use whereas the fossil fuel sources are getting depleted fast with fast and continuous extractions. These sources could be saved for the future generations to come and could be used at the time of need and emergency. Therefore, there is a need to increase and shift dependence on renewable energy for the development and prosperity of the nation. Development of renewable energy projects at a faster pace is need of the hour to meet country’s energy demand. This also warrants the need of sustainable development of renewable resources to ensure the continuous availability of power generation. This paper addresses the current scenario of renewable energy development in India and way forward for accelerated development of renewable energy.

    Renewable energy – exploitable option for energy needs

    Jan 2017 / by P. M. ABDUL RAHIMAN, S. J. GHULE and SATISH V. KULKARNI

    Uncontrolled industrialisation and over use of fossil fuel and air conditioner in large scale is resulting in change of climate, melting of glaciers, rising of sea level, volcanic eruption etc. All these indicate noticeable change in regular climate cycle. Continuous rise in pollution and drawbacks due to rise in temperature are even-accompanied with health problems that have become a new challenge. Global warming can create some new problems like people of country like Bangladesh, Maldives, and Tuvalu may face large problem of rehabilitations due to rising sea level and eventide, homelessness. It can raise a question to polar beer to search a new habitat for them. For our country too this is a complex problem. We are noticing sudden flood in Orissa, cyclone in Andhra Pradesh and unprecedented earthquake in Nepal, these are live examples in this context. So time has come to think and act positively for the use of renewable energy. It is time now for a detailed and deep discussion for this subject. We have to think about use of bio fuel instead of fossil fuel, minimise the use of traditional air conditioner, minimise the use of hazardous industry accompanied with carbon footprint. In information technology instead of use of computers and traditional machines in large scale use of robots can give a promise for a good future. When India is marching fast towards a challenging economy among advanced countries with its stake in information technology, energy option is an important issue to ponder with.

    Hydroelectricity

    Jan 2017 / by AMARTYA KUMAR BHATTACHARYA

    Hydropower has been used since ancient times to grind flour and perform other tasks. In the mid-1770s, French engineer Bernard Forest de Bélidor published Architecture Hydraulique which described vertical- and horizontal-axis hydraulic machines. By the late 19th century, the electrical generator was developed and could now be coupled with hydraulics. The growing demand for the Industrial Revolution would drive development as well. In 1878 the world’s first hydroelectric power scheme was developed at Cragside in Northumberland, England by William George Armstrong. It was used to power a single arc lamp in his art gallery. The old Schoelkopf Power Station No. 1 near Niagara Falls in the U.S. side began to produce electricity in 1881. The first Edison hydroelectric power station, the Vulcan Street Plant, began operating September 30, 1882, in Appleton, Wisconsin, with an output of about 12.5 kW. By 1886, there were 45 hydroelectric power stations in the U.S. and Canada. By 1889, there were 200 in the U.S. alone.

    Some discussions on alternative energy resources with particular reference to smart grid technology

    Jan 2017 / by S. ROY BARMAN

    The electric power system is undergoing a profound change driven by a number of needs,including environmental compliance and energy conservation. Grid reliability, operational efficiencies and customer service become important with aging infrastructure.This paper includes a plan for electric utilities to make their distribution grid a modern one, a smart one, an agile one. Smart grid solutions, including distribution automation, asset management, demand side management, demand response, distributed energy management and advanced metering infrastructure, allow utilities to identify and correct a number of specific system issues through a single integrated, robust and scalable smart grid platform.The paper provides an overview of technologies being deployed and key smart grid applications being implemented.

    Analysis and construction of Scheffler solar concentrator with application

    Jan 2017 / by MD. FIRDOUS ALAM and RAHUL SHARMA

    Scheffler reflector is fixed focus concentrators used for medium temperature applications in different parts of the world. This focus remains on the path of the radiation beam incident during the year. This paper reports the design, development and performance analysis of Scheffler reflector of 2.7 m2. The Scheffler reflector studied with typical experimental plan for simultaneous variation of the independent variables. Experimental response data analyzed by formulating dimensional by formulating dimensional equations. The tests were conducted in Feb 2017, 20 liters water were kept on focus. The experimental data were recorded during the fixed time interval. The analysis reveled performance of the average power and efficiency in terms of boiling tests.

    Keywords: Scheffler reflector, solar radiations, boiling test, fixed focus

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