توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Energy Integration in Water Efficient Pulp and Paper Plants
نویسنده(ها): ، ،
اطلاعات انتشار: دوازدهمین کنگره ملی مهندسی شیمی ایران، سال
تعداد صفحات: ۱۱
Water and Energy are essential commodities in a pulp and paper mill. Larger amount of water consumed and effluent generated within the mill, result larger energy required to heat, cool and pump these streams. Therefore, the interactions between mill water and energy usage should be analyzed together through a systematic analysis of mill energy and water consumption. The aim of this study is implementing cost–efficient energy savings in the low water consumption level pulp and paper industries. In this work, a general methodology based on Pinch Technology is presented which shows potential for energy conservation while reduction of water consumption. The live steam demand for the mill decreases while the mill`s hot water consumption is reduced. Also by decreasing the hot water consumption, quantity and temperature of available excess heat increases and by using the remaining excess heat for evaporation, yields a significantly larger energy savings for the mill.<\div>

۲effect of laser welding conditions on properties of steel tailor welded blanks TWB
نویسنده(ها): ، ،
اطلاعات انتشار: کنگره بین المللی جوش و روشهای اتصال، سال
تعداد صفحات: ۷
there is a major interest to manufacturers of automobile and aerospace parts towards the tailor welded blanks TWBs to reduce the weight and cost of the parts and improve their perfomance in this work effet of laser welding parameters such as power speed angle of the laser beam and the focused length on properties of four groups of TWBs two groups with similar thickness and different steels and two groups with similar steel and different thicnesses are investigated the results indicate that the inclined laser beam cause the sample failure from the weld zone in the tensile test setting the focal poit on the top surface of the sheets results in better properties in compariston to the other positions due to high cooling rate at weld zone microstructure of the weld aminly consists of acicular ferrite widmanstatten ferrite allotropic ferrite and to some extent low carbon bainite which in turn lead to higher strength in welded sheets comparing to the as received ones<\div>
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