85 results for “Carbon Dioxide”

Set a search alert

Research ArticleOpen accessIn the abstractEnvironmental Pollution Assessment of Different Diesel Injector Location Of Direct-Injection Diesel Engines: Theoretical StudyEyad S. M. Abu-Nameh, Jehad A. A. YaminAn Analytical investigation on the effect of injector location of a four-stroke DI diesel engine on its pollutants’ emissions was carried out under different injector locations ranging from central to peripheral at different engine speeds ranging from 1000 rpm to 3000 rpm. The simulation results clearly indicated the advantages and disadvantages of the central location over the peripheral one. It … …American Journal of Environmental Sciences, Vol. 4, Issue 2 · 30 Apr 2008 · 6,467 accessesView PDF Cite

Research ArticleOpen accessIn the abstractDynamic Modelling of an Industrial Smelter Furnace and Converter Off-gas SystemHelen Shang, Megan Dillabough, Phillip Nelson, Bryan SaltIn smelters, metal ores or concentrates are smelted to reduce a metal oxide to a metal through a series of reactions and processes. In a smelting process, a large amount of off-gas emissions are often generated, which can cause serious environmental and plant hygiene problems if not properly treated. Off-gas systems extract and treat the off-gas emissions, and ensure that … …American Journal of Environmental Sciences, Vol. 4, Issue 1 · 29 Feb 2008 · 7,153 accessesView PDF Cite

Research ArticleOpen accessIn the abstractA Bipolar Cockcroft-Walton Voltage Multiplier for Gas LasersShahid Iqbal, Rosli BesarA bipolar Cockcroft-Walton voltage multiplier (CWVM) is proposed as an attractive alternative to the symmetrical Cockcroft-Walton voltage multiplier for continuous wave gas lasers (e.g. carbon dioxide gas laser). The proposed CWVM formed by combining positive and negative voltage multipliers consisting of equal number of stages and driving in parallel by an ac voltage source. The proposed voltage multiplier needs only … …American Journal of Applied Sciences, Vol. 4, Issue 10 · 31 Oct 2007 · 8,270 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEnvironmental Assessment of a Diesel Engine Under Variable Stroke Length and Constant Compression RatioJehad A.A. Yamin, Eyad S.M. Abu-NamehIn the light of the energy crisis and the stringent environmental regulations, diesel engines are offering good hope for automotive vehicles. However, lot of work is needed to reduce the diesel exhaust emissions and give the way for full utilization of the diesel fuel's excellent characteristics. This paper presents a theoretical study on the effect of variable stroke length technique … …American Journal of Applied Sciences, Vol. 4, Issue 5 · 31 May 2007 · 6,732 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEvaluation of Fuel Consumption and Exhaust Emissions During Engine Warm-upM. Al-HasanEngine exhaust emission and fuel consumption during warm-up period was experimentally investigated. Experiment was conducted on a four-stroke four-cylinder spark ignition engine alternatively equipped with CIS and EIS. Fuel consumption; and exhaust emissions included hydrocarbon, carbon monoxide and carbon dioxide were measured as a function of ambient temperature; i.e. 7, 25 and 40ºC. In order to simulate engine operation condition … …American Journal of Applied Sciences, Vol. 4, Issue 3 · 31 Mar 2007 · 7,417 accessesView PDF Cite