Design And Performance Analysis Of Helical Wind Turbine

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Vol-4 Issue-3 2018IJARIIE-ISSN(O)-2395-4396Design and Performance Analysis of HelicalWind TurbineAnubhav Sharma1, Aman Kumar2, Mohit Kumar3, Alind Ojha4, Ravi Ranjan51UG STUDENT, Dept. of ME, IMS Engineering College, Ghaziabad, Uttar Pradesh, IndiaUG STUDENT, Dept. of ME, IMS Engineering College, Ghaziabad, Uttar Pradesh, India3UG STUDENT, Dept. of ME, IMS Engineering College, Ghaziabad, Uttar Pradesh, India4UG STUDENT, Dept. of ME, IMS Engineering College, Ghaziabad, Uttar Pradesh, India5Assistant Professor, Dept. of ME, IMS Engineering. College, Ghaziabad, Uttar Pradesh, India2ABSTRACTThis report describes about the wind power and its potential that can be harnessed in the future to meet the currentenergy demand. With detailed description of the wind turbine and the wind generator focus has been given on theinterconnection of the generators with the grid and the problems associated with it. The shape of the blades ischanged to helical so that it can rotate continuously at any direction of wind. Hence the efficiency of the turbine isimproved and also the stresses are minimized. Conclusions were made about the behavior of the wind in urbanlocation. Thereafter, the helix angle of the blade is changed and the best angle of operation is analyzed.1. INTRODUCTIONA windmill is a mill that converts the energy of wind into rotational energy by means of vanes called sails or blades.Centuries ago, windmills usually were used to mill grain, pump water, or both. Thus they often were gristmills, windpumps, or both. The majority of modern windmills take the form of wind turbines used to generate electricity, orwind pumps used to pump water, either for land drainage or to extract groundwater. A wind turbine is a device thatconverts kinetic energy from the wind into electrical power. The term appears to have migrated from parallelhydroelectric technology(rotary propeller). The technical description for this type of machine is an airfoil- poweredgenerator. The two main types of wind turbine are based on the direction/effect of the wind flow:Horizontal Axis Wind Turbine (HAWT) Vertical Axis Wind turbines (VAWT)Figure 1.Horizontal and Vertical Turbines8582www.ijariie.com1291

Vol-4 Issue-3 2018IJARIIE-ISSN(O)-2395-43962. DESIGN AND TYPES OF THE HELICAL BLADE WIND TURBINETypically, helical wind turbines are designed along a vertical axis. Vertical axis wind turbines are generally gainingpopularity for residences and urban settings because they can be placed lower to the ground and on rooftops.Another advantage of the helical wind turbine is that it generally can be used in areas with higher wind speeds wherebladed turbines would need to be shut down for safety reasons. In recent years, manufacturers of utility scalehorizontal axis bladed wind turbines have come under fire for killing birds especially in migratory paths. Helicalwind turbines are also less susceptible to problems with crosswinds than bladed turbines and they require no tail-fanto keep them pointed in the optimal direction.Figure 2. Different shapes of vertical turbinesFigure 3. Different blade types for vertical wind turbines3. FEATURES The turbine is self-starting. They are omni directional and do not require pointing in the direction of the wind.8582www.ijariie.com1292

Vol-4 Issue-3 2018IJARIIE-ISSN(O)-2395-4396 The lower blade rotational speeds imply lower noise levels. Perceived as being more aesthetically pleasing. The increased blade configuration solidity and torque assists the machine in self-starting. Eliminating the risk of the blade reaching equilibrium during start-up rotation by using 3 blades or more. Reduced cyclic loading and power pulsation and fluctuation by using more than 2 blades. Easy access to all mechanical and structural elements of the machine. A direct drive, permanent magnet generator is used and there are no gear boxes with the machine having onlyone moving part.4. FEASIBILITY IN INDIAThe gradual depletion of the fossil fuels along with their adverse implications on the global environment is a matterof increasing concern. To add to this further, the future progress and development of any country is judged by itscapacity to harness the renewable sources of energy like wind, solar and geothermal energy. Of the various forms ofrenewable energies available, wind energy happens to be the cleanest. Though India is still primarily dependent oncoal and petroleum as major sources of energy, it has become one of the major players in the production of windpower energy mainly due to the tremendous support from the Government of India and also of the huge coastalstretch. Currently it ranks third in the world in the production of wind power energy with wind energy accountingfor 70% of the total energy supplied by nonconventional energy sources. This is more so important as energydemand is likely to increase by three times between 2005 to 2030 [1]. Keeping in mind that much remains to bedone before its full potential is to be attained, the current paper attempts to present a brief review of the wind energypotential of India, its challenges, and possible suggestions to improve its present capacity.The range of wind speeds that are usable by a particular wind turbine for electricity generation is called productivewind speed. The power available from wind is proportional to cube of the wind's speed. So as the speed of the windfalls, the amount of energy that can be got from it falls very rapidly. On the other hand, as the wind speed rises, sothe amount of energy in it rises very rapidly; very high wind speeds can overload a turbine. Productive wind speedswill range between 4 m/sec to 35 m/sec. The minimum prescribed speed for optimal performance of large scale windfarms is about 6 m/s. Wind power potential is mostly assessed assuming 1% of land availability for wind farmsrequired 12 MW/ha in sites having wind power density exceeding 200 W/sq.m. at 50 m hub-height.[2]8582www.ijariie.com1293

Vol-4 Issue-3 2018IJARIIE-ISSN(O)-2395-4396Figure 4. Wind Resource Map Of India[3]Wind power costs in India are decreasing rapidly. The levelized tariff of wind power reached a record low of 2.43per kWh (without any direct or indirect subsidies) during auctions for wind projects in December 2017.[5]5. WIND SPEEDSUnder optimal conditions, the efficiency of a wind generator in converting energy to electricity is about 45%,although research shows efficiency of 10–40% is more common in day-to-day operation.Studies have found that average wind speeds in a particular location need to exceed at least 6–8 metres per second(m/s) for a small wind turbine to be economically viable. [6]Average wind speed distribution for a typical site is shown at Table below:8582www.ijariie.com1294

Vol-4 Issue-3 2018IJARIIE-ISSN(O)-2395-4396Figure 5. Average Wind Speed Across An Year In Typical City In India[7]From above graph we can conclude that for most part of the year ie. from April to October a substantial amount ofenergy can be harnessed from wind.6. CALCULATION FOR HELICAL WIND TURBINECalculating the energy available in the wind relies on knowledge of basic geometry and the physics behind kineticenergy. If the air mass is m and it moves with an average velocity V, the kinetic energy (KE) of the wind is:KE 1/2 x m x v2Joules(1)The mass of air hitting our wind turbine (which sweeps a known area) each second is given by the followingequation:Mass hitting in wind turbine V x A x p / second(2)2-3Where V is velocity in meter per second, are in meter , p is the density of air (which at sea level is 1.2256 kg m ).And therefore, the power in the wind hitting a wind turbine with a certain swept area is given by simply inserting themass per second calculation into the standard kinetic energy equation given above resulting in the following vitalequation:Power density 0.5 x p x A x V3(3)Where Power is given in Watts, the Swept area in square meters, the Air density in kilograms per cubic8582www.ijariie.com1295

Vol-4 Issue-3 2018IJARIIE-ISSN(O)-2395-4396meter, and the Velocity in meters per second.7. CONCLUSIONThese turbines are comparatively easy to build and the investment is also well affordable when compared to theHAWTs. Since the turbines are smaller in size, they can be only used for low power applications such as forpowering streetlights or the toll plazas. Moreover, they may also be used to power the advertisement hoardings. Anadvantage is that they can catch wind from all directions eliminating the need for yaw mechanism. In addition, theycan be built lower so they are less visible and can withstand much harsher environments and do not need to be shutdown at greater wind speeds.REFERENCES(1) R. Majumdar, I. Mukherjee, B. Tudu, D. Paul , Review On Feasibility Of Wind Energy Potential For India,1stInternational Conference on Non Conventional Energy (ICONCE 2014)(2) India Wind Energy - www.eai.in/ref/ae/win/win.html(3) com/maps/nonconventional/windpowercapacity.htm(4) GLOBAL WIND STATISTICS REPORT 2018 By GLOBAL WIND ENERGY COUNCIL(5) "Wind power tariffs in Gujarat auctions fall to Rs 2.43 per unit". The Economic Times. Retrieved 22 December2017.(6) Report on Wind Turbine Systems, ty-generation/windturbine-systems/(7) Annual Wind Speed Map Of India, .ijariie.com1296

Vol-4 Issue-3 2018 IJARIIE-ISSN(O)-2395-4396 8582 www.ijariie.com 1291 Design and Performance Analysis of Helical Wind Turbine Anubhav Sharma1, Aman Kumar2, Mohit Kumar3, Alind Ojha4, Ravi Ranjan5 1 UG STUDENT, Dept. of ME, IMS Engineering College, Ghaziabad, Uttar Pradesh, India 2 UG STUDENT, Dept. of ME, IMS Engineering College, Ghaziabad, Uttar Pradesh, India /p div class "b_factrow b_twofr" div class "b_vlist2col" ul li div strong Author: /strong Anubhav Sharma, Mohit Kumar /div /li /ul ul li div strong Publish Year: /strong 2018 /div /li /ul /div /div /div

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