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150 results for “power factor”
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Research ArticleOpen accessIn the abstractImpact of Bulldozer's Engine Load Factor on Fuel Consumption, CO2 Emission and CostVladislav Kecojevic, Dragan KomljenovicProblem statement: Bulldozers consume a large amount of diesel fuel and consequently produce a significant quantity of CO2. Environmental and economic cost issues related to fuel consumption and CO2 emission represent a substantial challenge to the mining industry. Approach: Impact of engine load conditions on fuel consumption and the subsequent CO2 emission and cost was analyzed for Caterpillar bulldozers. Results … …American Journal of Environmental Sciences, Vol. 7, Issue 2 · 26 May 2011 · 9,144 accessesView PDFCite
Research ArticleOpen accessIn the abstractTopology Control Using Efficient Power ManagementS. Karunakaran, P. ThangarajProblem statement: Effective Topology control will improve the performance and the capacity of Mobile Ad-hoc networks by building reliable network structure. Approach: Power level is used as the basis for topology control since it reduces spatial interference while increasing the effective channel capacity and network lifetime. Results: In this study, we design a topology control using efficient power management algorithm … …Journal of Computer Science, Vol. 7, Issue 4 · 4 Apr 2011 · 6,718 accessesView PDFCite
Research ArticleOpen accessIn the abstractVoltage Oriented Control Applied to a Grid Connected Photovoltaic System with Maximum Power Point Tracking TechniqueRym Marouani, Abdelkader MamiProblem statement: This study presented a grid connected photovoltaic system with voltage oriented control. This system contains the problem of degradation of photovoltaic power with climatic factors and the problem of synchronization of currents to be injected to the grid. Approach: In order to optimize the photovoltaic energy generation, we developed a new maximum power point tracking algorithm and we … …American Journal of Applied Sciences, Vol. 7, Issue 8 · 31 Aug 2010 · 8,698 accessesView PDFCite
Research ArticleOpen accessIn the abstractStudy of Performance Parameters of Threshing Unit in a Single Plant ThresherEzzatollah Askari Asli-Ardeh, Yousef Abbaspour-Gilandeh, Saeid AbbasiProblem statement: The rice is the one of important crop in the word which is cultivated at the extensive area of Iran. Yield of crop is a factor which is investigated in the breading researches. Usually, for threshing of crops at these studies, single plant thresher is used. Approach: In this study, the threshing unit of a type of single … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 2 · 30 Jun 2009 · 8,535 accessesView PDFCite
Research ArticleOpen accessIn the abstractApplication of the Ant Colony Search Algorithm to Reactive Power Pricing in an Open Electricity MarketA. Ketabi, A. Ali BabaeeDeveloping an accurate and feasible method for reactive power pricing is important in the electricity market. In conventional optimal power flow models the production cost of reactive power was ignored. In this study, the production cost of reactive power was comprised into the objective function of the OPF problem. Then, using ant colony search algorithm, the optimal problem was solved. … …American Journal of Applied Sciences, Vol. 6, Issue 5 · 31 May 2009 · 7,265 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffects of pollution on lead and cadmium concentration and correlation with biochemical parameters in blood of human population nearby Kosovo thermo power plantsEugene Oks, N.M. Daci, M.N. Daci-Ajvazi, H. PaçariziThis study describes an investigation of lead and cadmium pollution of Kosovo environment as a result of outflow from the coal processing industry. In a comparative study of lead and cadmium concentration in blood of human population of two different environments in Kosovo, one nearby Kosovo Thermo Power Plants, (Obiliq) a highly polluted environment and the other that is considered … …American Journal of Biochemistry and Biotechnology, Vol. 4, Issue 3 · 30 Sep 2008 · 7,196 accessesView PDFCite
Research ArticleOpen accessIn the abstractDesign of Robust UPFC Controller Using H∞ Control Theory in Electric Power SystemSeyed Abbas Taher, Shahabeddin Akbari, Ali Abdolalipour, Reza HemattiAn industrial plant, such a power system, always contains parametric uncertainties. In the design of a controller the uncertainties have to be considered. Otherwise, if the real plant differs from the assumed plant model, a controller, designed based on classical controller design approaches, may not ensure the stability of the overall system. In this paper design of robust control for … …American Journal of Applied Sciences, Vol. 5, Issue 8 · 31 Aug 2008 · 7,092 accessesView PDFCite
Research ArticleOpen accessIn the abstractEstimation of C*-Integral in Thin T-Sections Subjected to Projection and Remote Loading Base on Elastic Stress Concentration FactorA.R. Gowhari-Anaraki, F. Djavanroodi, S. ShadlouThe finite element method has been used to predict the creep rupture parameter, C*-Integral of flat T-section bar subjected to loaded projection and remote loading with a crack or crack-like flaw introduced in the fillet (i.e., high stress) region of the component. In this study, a new dimensionless creeping crack configuration factor, Q* has been introduced. Power low creeping finite … …American Journal of Applied Sciences, Vol. 5, Issue 5 · 31 May 2008 · 6,471 accessesView PDFCite
Research ArticleOpen accessIn the abstractTotal SO2 Emissions from Power Stations and Evaluation of their Impact in Kuwait Using a Gaussian Plume Dispersion ModelA.A. Ramadan, M. Al-Sudairawi, S. Alhajraf, A.R. KhanIn Kuwait, most of the power stations use fuel oil as the prime source of energy. The sulphur content (S%) of the fuel used as well as other factors have a direct impact on the ground level concentration of sulphur dioxide (SO2) released by power stations into the atmosphere. The SO2 ground level concentration has to meet the environmental standards … …American Journal of Environmental Sciences, Vol. 4, Issue 1 · 29 Feb 2008 · 6,857 accessesView PDFCite
Research ArticleOpen accessIn the abstractTopology Discovering and Power saving Mechanism for Routing in a Tree of Ad-hoc Wireless NetworksArwa ZabianPower management in mobile network is an open challenges where the power level in the network influences the network life time. However, there are a trade off between the power consumption and the connectivity in mobile networks. We present a topology control mechanism and a routing protocol for Ad-Hoc wireless networks that chooses the shortest path given the lower power … …Journal of Computer Science, Vol. 3, Issue 8 · 31 Aug 2007 · 6,555 accessesView PDFCite