توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Introduction of New Cell of Graphite –Mg with HCl –KMnO4 Electrolyte and Analyzing Effective Experimental Factors on the Cell
نویسنده(ها): ، ،
اطلاعات انتشار: هفتمین کنگره ملی مهندسی شیمی، سال
تعداد صفحات: ۶
In this article we are introducing a new cell composed of electrodes of Graphite –Mg and electrolyte of HCl– KMnO4 . Along this topic we are trying to discuss the effect of concentrationchanges of the electrolyte and temperature of the cell as well as surface area effect of each one ofthe electrodes. To estimate the usefulness duration of the cell, all of the reactions have beenkinetically analyzed. After making some changes in the structure of the cell and differing theelectrode type and replacing some metals like Cu and Zn instead of Mg, the produced powers havebeen compared. From the experimental observations and theoretical analyses, it is found out that using other metals instead of Mg decreases the produced power. Finally this kind of cell is compared with fuel cell.<\div>

۲THRE E DIMENSIONAL CFD SIMULATION OF AN I–TYPE MICROCHANNEL HEAT SINK
نویسنده(ها): ، ،
اطلاعات انتشار: دومین کنفرانس بین المللی نفت، گاز و پتروشیمی، سال
تعداد صفحات: ۱۰
Variation of fluid properties such as viscosity and density with temperature is considered to investigate the heat transfer and fluid flow in an I–type microchannel heat sink. For this purpose, basic conservation equations of heat, mass and momentum are solved to study the effects of input velocity, temperature,and heat flux as the controllable factors on maximum temperature of system. The simulation results are verified with experimental data that show good agreement. According to the Results, among the studied parameters, the input velocity has the most effect on both flow distribution and maximum temperature of fluid occurring at the lowest layer in the microchannel outlet. Increasing the input velocity of fluid tothe header reduces the maximum temperature and increases the mal–distribution of fluid flow. Maximum temperature of fluid is the most important controlling factor to keep the system in single phase. According to the input fluid velocity and temperature limitations, the maximum heat load could not be exceeding from some certain amount.<\div>

۳A NEW METHOD FOR REGULATING TEMPERATURE OF THE REACTORS IN CHEMICAL LOOPING COMBUSTION PROCESS
نویسنده(ها): ، ،
اطلاعات انتشار: سومین کنفرانس بین المللی نفت، گاز و پتروشیمی، سال
تعداد صفحات: ۸
Chemical looping combustion is a promising technology for energy generation along with inherent separation of CO2. In conventional chemical looping processes cooling jackets and supportive materials are in use to control the temperature of reactors. Supportive materials are in use to increasethe mechanical strength of oxygen carrier particles as well as enhancing the heat integration between the reactors. For the first time in this article along with using supportive materials, pressurized water as cooling fluid has been used in the internal coils of the air reactor. In this way, not only the outlettemperature of air reactor is regulated precisely, but also high pressure steam is produced. The proposed new scheme is very flexible in adjusting the temperature of reactors on desired values compare to the conventional plants. Aspen Plus 7.2 simulation software has been used to simulate the process and optimize operating conditions and outlet products.<\div>
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