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Lakshminarayanan, V.
- Analysis of Ozone Generation with Effect of Voltage, Frequency, (Temperature) and Flow Rate Using Corona Discharge
Abstract Views :178 |
PDF Views:1
Authors
Affiliations
1 Dr. Mahalingam College of Engineering and Technology, Pollachi, IN
2 KCG College of Engineering and Technology, Chennai, TN, IN
1 Dr. Mahalingam College of Engineering and Technology, Pollachi, IN
2 KCG College of Engineering and Technology, Chennai, TN, IN
Source
Programmable Device Circuits and Systems, Vol 4, No 12 (2012), Pagination: 673-677Abstract
This paper rationale a high voltage power supply which varies of (0-5) kV with the variable frequency of 50 Hz-5 kHz. The power supply is used in the dielectric barrier discharge tube for the ionization process to yield concentration of ozone.This setup points the development of small and high efficient ozone generators using corona discharge method. Ozone generation was carried out by varying parameters including voltage, frequency, flow rate and temperature to yield high concentration of ozone. The feeding gas composition greatly affected the ozone generation rate, which was increased in order of ambient air to dry air. With increase in temperature, ozone concentration is increased while ozone generation rate is enhanced. In the experiments, a maximum ozone concentration of approximately 83 ppm is obtained, the peak value of applied voltage of about 5kV and gap of electrode is 4.3mm respectively. Dry air is used as feeding gas with residence time of 10.58 sec.Keywords
Ferrite Core Transformer, Temperature Sensor (LM35), Ozone Analyzer & Air Compressor.
- Numerical Analysis on 64cm2 Active Area of PEM Fuel Cell
Abstract Views :189 |
PDF Views:0
Authors
Affiliations
1 Department of Mechanical Engineering, B V Raju Institute of Technology, Narsapur, Telangana - 502313, IN
1 Department of Mechanical Engineering, B V Raju Institute of Technology, Narsapur, Telangana - 502313, IN
Source
Research Journal of Engineering and Technology, Vol 8, No 3 (2017), Pagination: 167-173Abstract
The performance of the Proton Exchange Membrane (PEM) fuel cell depends on the operating and design parameters such as operating pressure, temperature, stoichiometric ratio of fuel and oxygen, relative humidity and rib width to channel width (R:C), the shape of the flow channel and the number of passes on the flow channel. In this work, the 3 Dimensional interdigitated flow channel of 64 cm2 (8cm x 8cm) active area model has been created using Creo software and it has been analyzed using CFD fluent software. The power density has been calculated with the effect of design parameter like various rib to channel width ratio (R:C) 1:1, 1:2, 2:1 and 2:2 and the operating parameters like various operating temperature (313, 323 and 333), constant pressure of 2 bar and constant inlet reactant mass flow rate of the PEM fuel cell has been considered. The maximum numerical power densities of interdigitated flow channel with R:C -1:2 were found to be 0. 138 W/cm2 at temperature of 323 K.Keywords
PEM Fuel Cell, Design Parameters, Rib to Channel Width Ratio, CFD, Interdigitated Flow Channel.References
- Yun Wang, Suman Basu, Chao-Yang Wang. Modeling two-phase flow in PEM fuel cell channels, Journal of Power Sources. , 2008; 179, 603–617.
- Shimpalee, S. Greenway, S. and Van Zee, J. W, “The impact of channel path length on PEMFC flow-field design,” Journal of Power Sources, 2006; Vol. 160, pp 398–406.
- Andrew Higier and Hongtan Liu, “Effects of the difference in electrical resistance under the land and channel in a PEM fuel cell, ”International Journal of Hydrogen Energy, 2011; Vol. 36, pp. 1664-1670.
- Lakshminarayanan V, Karthikeyan P, Muthukumar M, Senthil kumar A P, Kavin B, Kavyaraj A, ‘Numerical investigation of performance studies on single pass PEM fuel cell with various flow channel design’, Applied Mechanics and Materials, 2014; Vols. 592-594, 1672-1676.
- Bıyıkoğlu, A, Review of proton exchange membrane fuel cell models', International Journal of Hydrogen Energy, 2005; vol. 30, no. 11, pp. 1181-1212.
- Lee, B, Park, K and Kim, H-M, Numerical optimization of flow field pattern by mass transfer and electrochemical reaction characteristics in proton exchange membrane fuel cells, Int. J. Electrochem. Sci, 2013; vol. 8, pp. 219-234.
- Lakshminarayanan V, Karthikeyan P, Kiran Kumar D S and Dhilip Kumar S M K, Numerical analysis on 36cm2 PEM fuel cell for performance enhancement, ARPN Journal of Engineering and Applied Sciences, 2016; Vol. 11, no. 2.
- Lakshminarayanan. V, Karthikeyan. P, Mallikarjun. T, Mahesh. D, Parametric analysis of 49 cm2 serpentine flow channel of Polymer Electrolyte Membrane Fuel Cell (PEMFC) for Performance Enhancement, International Journal of Applied Engineering Research, 2015; Vol. 10 No. 85.
- V. Lakshminarayanan, Leo Daniel A, Numerical analysis on 64 cm2 serpentine flow channel design of PEM fuel cell, International Journal of Engineering Science and Technology, 2017; Vol. 9, 205-210.
- Khazaee, I, Ghazikhani, M and Mohammadiun, M, 'Experimental and thermodynamic investigation of a triangular channel geometry PEM fuel cell at different operating conditions', ScientiaIranica, 2012; vol. 19, no. 3, pp. 585-593.
- Oosthuizen, P, Sun, L and McAuley, K, The effect of channel-to-channel gas crossover on the pressure and temperature distribution in PEM fuel cell flow plates, Applied Thermal Engineering, 2005; vol. 25, no. 7, pp. 1083-1096.
- Incorporation of a Secondary Wheel Assembly using Novel Zigbee based Traction Control System for Vehicle Stability during Tire Blow-Outs
Abstract Views :232 |
PDF Views:102
Authors
Affiliations
1 Dept. of Auto. Engg., Dr. Mahalingam College of Engg. and Tech., Pollachi, Tamil Nadu, IN
2 Dept. of Electronics and Instrumentation Engg., Dr. Mahalingam College of Engg. and Tech., Pollachi, Tamil Nadu, IN
1 Dept. of Auto. Engg., Dr. Mahalingam College of Engg. and Tech., Pollachi, Tamil Nadu, IN
2 Dept. of Electronics and Instrumentation Engg., Dr. Mahalingam College of Engg. and Tech., Pollachi, Tamil Nadu, IN
Source
International Journal of Vehicle Structures and Systems, Vol 10, No 6 (2018), Pagination: 407-410Abstract
Tire blow-outs or puncture during the operation of the vehicle is one of the major ischolar_main causes of road accidents. The drivers lose his/her control of the steering wheel when the tire get punctured or busted leading towards loss of stability of the vehicle causing adverse effects to the vehicle and the passenger. Due to the rapid change in the pressure range within the tyres, the rim of the wheels come in contact with the road surface causing loss of traction and stability of the vehicle leading to accidents. Despite, the rapid advancements witnessed in the field of automobile industry stating from autonomous vehicles to electronic stability unit, a proper solution addressing the issue of accidents caused due to tire blow-outs remains unanswered. In this proposed study, automatic activation of an additional secondary wheel/roller assembly mounted to the chassis using a custom made Zigbee based smart traction system in order to address the traction and stability issues based on the real-time pressure of the tyre is presented. The real-time pressure of the wheels is monitored by the control system which then decides on scheduling the activation of the secondary wheel/roller assembly using a battery operated pneumatic system which will prevent the vehicle from losing its stability. The proposed traction control system consisting of the secondary roller assembly could also be considered as a lifesaving add-on to the passenger vehicle and a replacement for the wheel replacement jack emphasising the market demand of the proposed solution which is a robust and a cost-effective solution.Keywords
Feasibility Analysis, Wheel Assembly, Tire Blow-Outs, Vehicle Stability, ZigBee.Full Text
References
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- B. Najjari, S.M. Barakati and A. Mohammadi. 2012. Modelling and controller design of electro-pneumatic actuator based on PWM, Int. J. Robotics and Automation, 1, 125-136. https://doi.org/10.11591/ijra.v1i3.565.
- S. Liu and J.E. Bobrow. 1988. An analysis of a pneumatic servo system and its applications to a computer-controlled robot, ASME J. Dynamic Systems, Measurements and Control, 110, 228-235. https://doi.org/10.1115/1.3152676.