توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Stability of flow between two eccentric cylinders With heat transfer and rotation
نویسنده(ها): ،
اطلاعات انتشار: یازدهمین کنفرانس دینامیک شاره ها، سال
تعداد صفحات: ۱۲
The effect of a radial temperature gradient on stability of steady–state flow of a viscous liquid between two solid eccentric cylinders with inner one rotate in determined velocity was investigated. The existence of hydrodynamic instabilities leads to formation of Taylor vortices in flows in the annulus between two cylinders. The study of heat transfer within the rotating enclosure is complex. For horizontal configuration, the buoyancy and the centrifugal effects (created by the heated rotating cylinder) give rise to fully three–dimensional flows. Understanding the dynamics of these flows is of great practical interest because they are encountered in many engineering and geophysical problems, and it may help to improve mass and heat transfer involved in different processes, e.g. cooling of rotating electrical machinery and turbines rotors or to explain some dynamical processes in the oceans and the atmosphere. The linear stability problem is considered in the Boussinesq approximation and the results of 3D numerical analysis of flow and heat transfer in two horizontal eccentric cylinders with a heated rotating inner cylinder are presented. Solutions are presented for a number of Taylor and Reyleigh numbers.<\div>

۲Energy and exergy analysis of fuel cell heat recovery cycle for residential application
نویسنده(ها): ،
اطلاعات انتشار: هفدهمین کنفرانس سالانه مهندسی مکانیک، سال
تعداد صفحات: ۶
Todays concern regarding limited fossil fuel resources and their contribution to environmental pollution have changed the general trend to utilization of high efficiency power generation facilities like fuel cells.<\div>

۳Performance Analysis of a New System for Water Recycling fromReverse Osmosis Wastewater
اطلاعات انتشار: همایش ملی محیط زیست و صنعت سبز، سال
تعداد صفحات: ۸
In this report, a mathematical model for vapor compression process in a single–effect mechanicalvapor compression (MVC) cycle to harvest water from the RO rejects containing dissolved salts, ispresented. Also the sensitivity of specific power consumption and compressor pressure ratio to the operation variables such as evaporator temperature, concentration of dissolved salts, the difference between the temperature of boiling wastewater and recycled water are investigated. It is shown thatpower consumption and pressure ratio increase linearly with the increase of the difference between theboiling wastewater temperature and the recycled water. This effect is more at higher values of temperature differences. Also, the specific power consumption and pressure ratio increase at lowerevaporation temperatures. Also this study shows that Sensitivity of this system to the feed salinity islow. The specific power consumption at evaporation temperature of 80 C, temperature difference of 4o 3C and salinity of 1% is 10.44 kwh\m . The values close to our intended value in the similar published articles on desalination are available<\div>
نمایش نتایج ۱ تا ۳ از میان ۳ نتیجه