نتایج جستجو برای: minimum spouting velocity
تعداد نتایج: 303632 فیلتر نتایج به سال:
Mobile sensors cover more area over a fixed period of time than the same number of stationary sensors. However, the quality ofcoverage achieved by mobile sensors depends on the velocity, mobility pattern, number of mobile sensors deployed and the dynamicsof the phenomenon being sensed. The gains attained by mobile sensors over static sensors and the optimal motion strategies formobi...
Background & Objectives : Chemicals are serious harmful agents in the workplace, especially chemistry labs. This material may cause poisoning and different diseases. Laboratory hoods as first safety device protect laboratory workers against hazardous chemicals. This research conducted on chemistry labs in a petrochemical company for awareness of the hoods performance and proposed the nee...
Background and Aim: Laboratory fume-hoods are the first-level protection for the laboratory staff against hazardous chemical pollutants. Considering the large numbers of personnel, especially in petrochemical industry laboratories, this project was carried out in order to assess the performance of laboratory hoods based on tracer gas (SF6).Materials and Methods: In this project 22 hoods in the ...
conclusions results indicated that annular fluidized bed reactor’s adsorbers are useful techniques for vocs adsorption. comparison of two particle ranges indicates that in all concentrations and all flow rates of the experiments, smaller particle size adsorption are better. in superficial velocity above the minimum fluidization velocity, pressure drop of fluidized beds are less than the pressur...
This paper examines the role of creative milieu and cultural heritages in the development of Chinese cultural industry. Through case study of Beijing’s Nanluoguxiang, where several arts institutions and theaters concentrate, it depicts the birth and growth of a creative place for free artists in the institutional changing of Chinese cultural setting. Based on field survey data from artists, man...
The fluidization behavior of silica gel was tested in a fluidized bed under different sound pressure levels and sound frequencies. It has been found that the particle mixtures can be fluidized smoothly with sound assistance at low sound frequency owing to the sound energy disrupting large size of agglomerates. The minimum fluidization velocity was found to decrease with increasing sound frequen...
The fluidization and reduction behavior of micron-sized iron oxide powder, produced by combustion, is studied in a lab-scale cylindrical fluidized bed. minimum velocity umf found to stabilize above normalized static bed heights 0.5 H/D (static height divided the diameter). measured as function temperature between 280 860 K for both H2 N2 fluidizing gas. experimental results start deviate from E...
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