Volume-6 (Second International Conference on Emerging Trends in Engineering' 2013)
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Paper Type | : | Research Paper |
Title | : | Flexible Coupling a New Approach |
Country | : | India |
Authors | : | Prof. R.S.Powar ,Prof. N.S Deshmukh, Dr.S.D.Suryawanshi |
Abstract:This paper presents the concept of flexible type of coupling for power transmission in light load conditions. In some cases of power transmission due to manufacturing limitations and/or misalignment at the time of installation, coupling may fail. It is observed that in power transmission flexible links are used in the form of belt loops. In such a design, belt subjects to shear failure. In present study belts are so mounted on flanges that it subjects to tensile load. In general it is observed that the strength of material is higher in tension than shear. In previous design of flexible couplings more axial space and material is required than the present design. For present coupling various types of belts are to be used as a flexible link in between two shafts. Various belts are selected and tested for coupling design; with this data of belt testing a flexible coupling is designed. Due to modifications in design and material selection 20 % weight reduction is achieved .This weight reduction not only reduces cost of coupling but will reduces installation and vibration problems. Radial distance also decreases by 25%.Connecting two flanges belt as a flexible element is used which reduces noise during power transmission. It will be used for single cylinder four stroke engines having rated power of 2.28 kW at 3600 rpm. This set up is being used for I.C. Engine lab. The concept originates due to frequent failure of rigid flange coupling.
Keyword: flexible Coupling, belt, weight reduction, misalignment, light load.
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[2]. S.B. Jaiswal, M.D. Pasarkar "Failure Analysis of Flange Coupling In Industry"
International Journal of Emerging Technology and Advanced Engineering (ISSN 2250-2459, Volume 2, Issue 5, May 2012)
[3]. http://www.lovejoy-inc.com/products/torsional-couplings/lf-series.aspx (visited on 15 Dec. 2012)
[4]. John Kocur "VFD Induced Coupling Failure" 37th Turbomachinery Symposium,2008
[5]. Stephen Jesse, J. Wesley Hines, James Kuropatwinski,Andrew Edmondson, Thomas G. Carley "Motor Shaft Misalignment Versus Efficiency Analysis" The University of Tennessee College of Engineering Maintenance and Reliability Center Knoxville, TN 37996
[6]. Design Data, PSG College of Technology,Coimbtore-641 004(M/s. DPV PRINTERS, 1995)
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Paper Type | : | Research Paper |
Title | : | Heat Transfer Enhancement by Using Dimpled Surface |
Country | : | India |
Authors | : | Hemant C. Pisal, Avinash A. Ranaware |
Abstract: The importance of heat transfer enhancement has gained greater significance in such areas as microelectronic cooling, especially in central processing units, macro and micro scale heat exchangers, gas turbine internal airfoil cooling, fuel elements of nuclear power plants, and bio medical devices. A tremendous amount of effort has been devoted to developing new methods to increase heat transfer from fined surface to the surrounding flowing fluid. Rib turbulators, an array of pin fins, and dimples have been employed for this purpose. An investigation was conducted to determine whether dimples on a heat sink fin can increase heat transfer for laminar airflows. This was accomplished by performing an experimental and numerical investigation using two different types of dimples: 1) circular (spherical) dimples, and 2) oval (elliptical) dimples. Dimples were placed on both sides of a copper plate with a relative pitch of S/D=1.20 and relative depth of δ/D=0.2 (e.g., circular dimples). For oval dimples, similar ratios with the same total depth and circular-edge-to-edge distance as the circular dimples were used. For those configurations the average heat transfer coefficient and Nusselt number ratio were determined experimentally. For circular and oval dimples, heat transfer enhancements (relative to a flat plate) were observed for Reynolds number range from 600 to 2000 (Reynolds number based on channel height). Moreover, pressure drop, thermal performance and flow characteristic were simulated numerically.
Keyword: Laminar flow
[1] P.W. Bearman and J.K. Harvey, Control of circular cylinder flow by the use of dimples, AIAA J. 31 (1993) 1753-1756.
[2] M.K. Chyu, Y. Yu, H. Ding, J.P. Downs and F.O. Soechting, Concavity enhanced heat transfer in an internal cooling passage, International Gas Turbine & Aeroengine Congress & Exhibition ASME paper 97-GT-437.
[3] H.K. Moon, T. O` Connell and B. Glezer, Channel height effect on heat transfer and friction in a dimpled passage, J. Gas Turbine Power 122 (2000) 307-313. [
4] G.I. Mamood, M.L. Hill, D.L. Nelson, P.M. Ligrani, H.K. Moon and B. Glezer, Local heat transfer and flow structure on and above a dimpled surface in a channel, J. Turbomachinery 123 (2001) 115-123.
[5] P.M. Ligrani, G.I. Mamood and M.Z. Sabbagh, Heat transfer in a channel with dimples and protrusion on opposite walls, J. Thermophys. Heat Transfer 15 (3) (2001) 275-283.
[6] G.I. Mahmood and P.M. Ligrani, Heat Transfer in a dimpled channel: combined influences of aspect ratio, temperature ratio, Reynolds number, and flow structure, Int. J. heat Mass Transfer 45 (2002) 2011-2020.
[7] N.K. Burgess and P.M. Ligrani, Effects of dimple depth on channel nusselt numbers and friction factors, J. Heat Transfer 127 (8) (2005) 839-847.
[8] R.S. Bunker and K.F. Donellan, Heat transfer and friction factors for flow inside circular tubes with concavity surfaces, J. Turbomachinery 125 (4) (2003) 665- 672..
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Paper Type | : | Research Paper |
Title | : | Prediction of Performance and Emission of Palm oil Biodiesel in Diesel Engine |
Country | : | India |
Authors | : | Sumedh Ingle,Vilas Nandedkar,Madhav Nagarhalli |
Abstract: Recent studies reveal that increasing fuel prices and scarcity of its supply have promoted interest in development of alternative sources for petroleum fuels. Biodiesel is receiving increasing attention each passing day because fuel of properties and compatibility with petroleum- based diesel fuel. Therefore, in this paper the prospects and opportunities of using methyl esters of palm oil as fuel in an engine is studied. In the present research work tests were conducted on a four stroke, single cylinder, D.I. diesel engine with Diesel and various blends of Biodiesel at various preheating temperature. The results of performance and emission tests are compared with various blends of palm oil biodiesel with that of neat diesel. The results indicate that at blend B20 with preheating temperature 60oC, Brake Specific Energy Consumption (BSEC) is lowest and highest exhaust gas temperature as compare to other blends, while neat diesel gives lowest smoke density.
Keywords-Brake specific energy consumption, smoke density, eddy current dynamometer, exhaust gas temperature.
[2]. A.K.Babu, G. Devarao. : Vegetable Oils and Their Derivatives as Fuels for CI Engine: An Overview: SAE 2003-01-0767.
[3]. M.V.Nagarhalli, V.M.Nandedkar, K.C.Mohite.: Emission and Performance characteristics of Karanja Biodiesel and its blends in CI engine and its economics" ARPN journal of Engineering and Applied science,5(2), Feb. 2010,52-56.
[4]. A.K. Agarwal, L.M. Das, "Biodiesel Development and Characterization for Use as a Fuel in Compression Ignition Engines." Alternative Fuels and Emission Control, vol. no.123, April-2001, 440-447.
[5]. Mohammed Harun Chakrabarti, Mehmood Ali, "Performance of Compression ignition engine with indigenous castor oil Biodiesel in Pakistan", NED University Journal of research, 4(1), (2009), 10-19.
[6]. Ingle S, Nandedkar V.M, "Indigenous Castor oil Biodiesel an alternative fuel for Diesel Engine" International journal of Mechanical and Industrial Engineering, ISSN no. 2231-6477, 2(2), 2012, 62-64.
[7]. Yusuf Ali, M.A. Hanna.: Alternative Diesel Fuels From Vegetable Oils", Bioresource Technology, paper no- 0960-8524(94)00072-7 50 (1994), 153-163.
[8]. M.A. Kalam, H.H. Masjuki,.: Biodiesel from Palm Oil- an analysis of its properties and potential", Biomass and Bioenergy, vol. no.23, 2002 ,471- 479.
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Paper Type | : | Research Paper |
Title | : | Quasiturbine Rotary Air Engine |
Country | : | India |
Authors | : | Mr. Jagadale K.M. , Mr.Kadam A.N. , Mr.Jadhav S.S. , Mr.Mulik P.P. |
Abstract: This paper discusses concept of Quasiturbine (QT) engines and its application in industrial systems and new technologies which are improving their performance. The primary advantages of air engine use come from applications where current technologies are either not appropriate or cannot be scaled down in size, rather there are not such type of systems developed yet . Examples are given showing cases where it is more cost effective (and efficient) to use steam engines including dispatched power, use of a lower grade gas turbine with a steam engine bottoming cycle especially in CHP applications with a large heat to power ratio, and in secondary heat recovery systems. For small systems, the steam turbine is not appropriate because of its small turndown ratio, sensitivity to steam quality, and high operating speeds. This results in available steam power being wasted. Steam engines scale down in size beautifully, work better with wet steam, and operate with very modest operating speeds.
KeyWords- Quasiturbine (QT) , Positive displacement rotor, pistonless Rotary Machine
1. Crom, C., 2005, ―Technical Discussion Comparing the QT with Other Common Engines‖, White Paper published in Energy Central, www.energycentral.com/centers/knowledge/whitepapers/latest_by_topic.cfm .
2. QT (Kyotoengine) website www.QT.com .
3. Saint-Hilaire et al., May 2007, ―QT - Low RPM High Torque Pressure Driven Turbine For Top Efficiency Power Modulation‖, IGTI — International Gas Turbine Institute and ASME — American Society of Mechanical Engineers, Proceeding of the Turbo Expo Conference May 14-17, 2007 www.QT.com/QTPapiers/ASME2007QTMontreal.pdf .
4. 2006, "The Future of Geothermal Energy" MIT-led panel backs 'heat mining' as key U.S. energy source http://web.mit.edu/newsoffice/2007/geothermal.html .
5. Keenan, J. H. and Keyes, F. G., Thermodynamic Properties of Steam, First Edition, New York: John Wiley, London: Chapman and Hall Limited. (1936).
6. A sample of Mollier table equations and calculations on spreadsheet (EXCEL) at www.chemicalogic.com/download/mollier.htmlSeverns, H. S. and Degler, H. E. Steam Air and Gas Power, New York: john Wiley and Sons Inc., London: Chapman and Hall Limited (1939).
7. Stokes, M. D., 2004, ―Quantum Parallel: The Saint-Hilaire "QT" As The Basis For A Simultaneous Paradigm Shift in Vehicle Propulsion Systems‖, White Paper published in eMOTIONREPORTS.com and presented at the 2004 Global Powertrain Conference (GPC) Advanced Powerplants & Vehicles Session, Dearborn, Michigan, USA.
8. Joaquin G. Ruiz, February 2005 - Waste Heat Recovery in Automobile Engine Potential Solutions and Benefits, Massachusetts Institute of Technology, QT Stirling and Motion Reports White Paper cited .http://hdl.handle.net/1721.1/32832 https://dspace.mit.edu/bitstream/1721.1/32832/1/60689109.pdf .
9. Young, V. W. and Young, G. A., McGraw-Hill Book Company Inc. New York and London (194
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Paper Type | : | Research Paper |
Title | : | Review on Eclipse Gearbox Reliability |
Country | : | India |
Authors | : | R. R. Salunkhe, Prof V. R. Gambhire, R. S. Kapare |
Abstract: Wind turbine gearbox reliability is a well documented industry-wide concern. The Eclipse Gearbox is a high-reliability; novel gear set that can significantly reduce reliability problems. The gear set embodies a speed ratio of up to 150 to 1 in a single stage, which is achieved through an original configuration of gears: One gear rotates and provides a circular path for another gear. A rotational gear is attached a high torque shaft. Another gear is engaged with the rotational gear and translates on a circular path. The second gear is connected with linkages to a low torque shaft that resembles a crankshaft
[2]. Stefanovic-Marinovic J.,Banic M.,Miltenovic A.:Selection of CVT Transmission Construction Design for Usage in Low Power Wind Turbine, Machine Design, Monograph on the Occasion of 49th Anniversary of the Faculty of Technical Sciences, Faculty of Technical Sciences,Novi Sad, 2009, pp. 101-104.
[3]. Miltenovic, V., Velimirovic M., Banic, M.: Contribution to Development of Wind Generator Continuously Variable Transmission, Balkan Power Transmission 2009 (BAPT '09), Kallithea, Greece, 2009.
[4]. Trends in wind turbine drive trains- Dipl. Ing. ETH Hanspeter Dinner, EES KISSsoft GmbH, Switzerland
[5]. M.J. Verdonschot Modeling and Control of wind turbines using a Continuously Variable Transmission-M.J. Verdonschot DCT 2009.028
[6]. Gold,A CVT Aug 2007 HTTP://cars.about.com/OD/CVT.htm
[7]. Terry Lester ,Texas USA, Traditional Gear box reliability Terry Lester ,Texas USA.
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[9]. US Patent #1,613,344 "Power Transmission"
[10]. -George Constantinesco http://www.renewableenergyworld.com/rea/n ews/reworld/story?id=52694
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Paper Type | : | Research Paper |
Title | : | Safety Aspects of CO2 as a Refrigerant |
Country | : | India |
Authors | : | Mr. Sumit Bardiya, Prof. R.S. Powar, Prof. P.R. Kulkarni |
Abstract: Safety is a major concern in any refrigeration application and it is the main reason why synthetic refrigerants dominated the refrigeration industry for several decades. In the specific application of refrigeration system, safety is more carefully considered because of the large number of people that might be affected in the case of leakage. This study analyses some safety aspects related to the usage of CO2 in large systems.
Keywords – Safety Aspects, Risk analysis, CO2
[2] C. P. Arora, Refrigeration and Air Conditioning, Edition 3, 2009, pp. 210-220
[3] Bureau of Energy Efficiency, Energy Conservation Building Code, 2007
[4] Research Article "Carbon Dioxide as Natural refrigerant" by Padalkar A. S., Kadam A. D.
[5] Health Risk Evaluation for Carbon Dioxide (CO2) http://www.blm.gov
[6] Amin, J., B. Dienhart, et al. (1999). Safety aspects of an A/C system with carbon dioxide as refrigerant. SAE Automotive Alternate Refrigerant Systems Symposium,Scottsdale, Arizona, USA.
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Paper Type | : | Research Paper |
Title | : | Through-Put Time Reduction by Lean Manufacturing |
Country | : | India |
Authors | : | Prof.Rahul.R.Joshi,Mr.Rahul.Patil,Prof.G.R.Naik,Prof.M.V.Kharade |
[1] Nasreddin dhafr & Munir Ahmad, "Improvement of quality performance in manufacturing organizations by minimization of production defects",Robotics and Computer-Integrated Manufacturing( 2006)pp536-542.
[2] Colin Herron & Paul M. Braiden, "A methodology for developing sustainable quantifiable Productivity Improvement in manufacturing Companies", International Journal of Production Economics(2006)pp143-153.
[3]Saurabh Tiwari& Nishi Tripathi , "The journey of lean" Indian Journal of Commerce and Management Studies( 2011)pp200-208. [4]Jirapat & Apichat, "A framework for implementing lean manufacturing system in small and medium enterprises"(2010).
[5] A.Abduelmula & R.MacIsaac, "Lean Manufacturing Implementation"(2008).
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Paper Type | : | Research Paper |
Title | : | Parametric optimization of Electro Chemical Spark Machining using Taguchi based Grey Relational Analysis |
Country | : | India |
Authors | : | Sathisha.N, Somashekhar. S. H., Shivakumar. J., Badiger. R. I. |
Abstract: The non conductive materials like Glass and Ceramics play a major role in automobiles, aeronautics & other industrial applications due to their enhanced mechanical properties. Electro Discharge Machining (EDM) & Electro Chemical Machining (ECM) play a major role in many industrial applications to machine conducting materials but they fail to machine non-conducting material. In this Paper an attempt has been made to combine the principle of EDM & ECM process to machine non-conducting material. In this consideration an experimental set up of Electro Chemical Spark Machining (ECSM) has been developed. Experiments were conducted according to the Taguchi Orthogonal Array L9 to groove on soda lime glass. The effect of process parameters like Tool-work piece gap, Voltage & Concentration of the electrolyte on Material Removal Rate (MRR) and Tool Wear Rate (TWR) is studied. Grey relational analysis is employed to optimize the process parameters of the multiple responses (MRR and TWR). The significant parameter to effect on MRR and TWR are determined using ANOVA. From the experimental results, it has been found that the Tool-Work piece gap has the greatest impact on MRR and Tool wear rate.
Key words : ECSM, Grey Relational Grade, MRR, TWR, Optimization.
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