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SCALING OF PERMEABILITIES AND FRICTION FACTORS OF HOMOGENEOUSLY EXPANDING GAS-SOLIDS FLUIDIZED BEDS (GELDART'S A POWDERS AND MAGNETICALLY STABILIZED BEDS)
fluidization magnetic field stabilized bed friction factor
2009/10/13
The concept of a variable friction factor of fluid-driven deformable powder beds undergoing fluidization is discussed. The special problem discussed addresses the friction factor and bed permeability ...
APPLICATION OF INVERSE CONCEPTS TO DRYING
inverse approach drying thermophysical properties
2009/10/13
This paper deals with the application of inverse approaches to estimation of drying body parameters. Simultaneous estimation of the thermophysical properties of a drying body as well as the heat and m...
A model for transfer processes in column apparatuses has been done. The model may be modified for different apparatuses as columns with (or without) packet bed, two (or three) phase airlift reactors a...
ON THE EVOLUTION OF LAMINAR TO TURBULENT TRANSITION AND BREAKDOWN TO TURBULENCE
transition to turbulence two-point correlations closure problem
2009/10/13
Starting from the basic conservation laws of fluid flow, we investigated transition and breakdown to turbulence of a laminar flat plate boundary layer exposed to small, statistically stationary, two-c...
DRYING OF SOLUTIONS AND SUSPENSIONS IN THE MODIFIED SPOUTED BED WITH DRAFT TUBE
spouted bed drying solid-water solutions
2009/10/13
A modified spouted bed dryer with inert particles was used for drying of solutions and suspensions. The effects of the operating conditions on dryer throughput and product quality were investigated. E...
The pressure fluctuations in a fluidised bed are a result of the actions of the bubbles. However, the bubbles may be influenced by the air supply system and by the pressure drop of the air distributor...
The Differential Cylinder Heat Engine (DCHE) reported consists of two different size cylinders with pistons where four passages (channels) enable fluid communications between cylinders. The pistons ar...
利用白马电厂300 MW循环流化床(circulating fluidized bed，CFB)锅炉现有的结构和设备，搭建提升管内径240 mm，高度分别为38和54 m的循环流化床冷态实验台，研究提升管高度、系统物料量及流化风速对物料浓度分布的影响。实验结果表明，当风速大于临界风速时，上部气固流动达到饱和携带状态，炉膛高度及床料量不会改变上部气固浓度和循环流率的大小。但高度增加后达到饱和空隙率的...
坎深和入池角度对跌坎型底流消能工水力特性影响的试验研究
消力池 水力特性 底流消能
2009/9/16
采用水力学试验方法,对跌坎型底流消能工的水流流态、时均动水压力分布以及临底流速进行了分析.并对影响消力池水力特性的跌坎深度和水流入池角度进行了研究.研究表明跌坎型底流消能工能有效改善消力池内的水力学指标,但跌坎深度和水流入池角度对其影响较大.因此,如何确定消力池的跌坎高度和水流入池角度是进行消力池设计的关键.
直联式空压机PWM变占空比控制（Changing Duty Ratio PWM Control of Direct-drive Air Compressor）
直联式空压机 直流无刷电动机 变占空比
2009/8/11
研究了一种用直流无刷电动机驱动的直联式空压机，借鉴直接转矩控制的思想，根据直联式空压机负载的特点，提出了一种基于单片机的脉宽调制(PWM)变占空比控制方法。根据空压机负载，将控制周期中的每一拍设置成不同的占空比。给出了基于Simulink的仿真计算，仿真结果表明，这种控制方法简单可行，直联式空压机转速波动较小，且有较好的稳定性和抗干扰能力。试验结果表明，PWM变占空比控制能达到节约成本，提高效率，...
粘滞性流体动力学
QGP dissipative fluid viscosity
2009/7/31
We briefly discuss the phenomenological theory of dissipative fluid.
We also present some numerical results for hydrodynamic evolution of
QGP fluid with dissipation due to shear viscosity only. Its ...
Investigation of the Mach Number Effects on Fluid-to-Fluid Interaction in an Unsteady Ejector with a Radial-Flow Diffuser
Non-Steady Ejector Fluid-to-Fluid Interaction
2010/1/15
The concept of fluid-to-fluid direct interaction whereby energy can be transferred among the interacting fluids was demonstrated and shown to be conceivable in non-steady ejectors. Unlike steady eject...
高温排风机关键技术研究（图）
高温 排风机 关键技术
2009/6/23
本项目由我院和金隆铜业有限公司等单位共同承担。金隆铜业有限公司闪速炼铜炉所使用的水泥窑尾专用高温风机在运行过程中存在不能满负(70%正常工作转速)和不能安全运行等严重影响安全生产的问题。该高温风机采用国外专有技术，被用于世界首家实现常温送风闪速炼铜的大型铜冶炼厂生产中。本项目的主要针对高温风机在运行中出现的问题进行分析研究，并对其进行改造。在此之前，国内对大型高温风机关键技术的研究还属空白。高温排...
高压隔膜计量泵和微量隔膜计量泵的研制（图）
高压隔膜计量泵和微量隔膜计量泵的研制
2009/6/23
高压隔膜计量泵的研制是为防止亚临界汽轮机锅炉的高压汽包内结垢高压注入磷酸盐溶液，以高压隔膜计量泵替代柱塞计量泵而开展的研制。样机的实测性能：流量Q=50.54L/h，排出压力p=20Mpa，调节范围S=30～100%，稳定性精度Es=0.21%，复现性精度Er=0.53%，线性度El=0.70%。样机的液力端的柱塞采用活塞环密封，隔膜边缘采用双凹凸锯齿形压封；限位补偿系统和非对称膜腔，使液压腔内既...
YJ型油烟净化机组（图）
YJ型 油烟净化 机组
2009/6/23
该课题针对国内现有餐饮行业用油烟净化设备技术落后的局面，研制开发出一种将净化、通风、消声功能组合于一体的整体式油烟净化机组，技术含量高。该课题的研制为目前解决餐饮行业油烟净化效率低、噪音污染大等问题提供了先进的油烟净化设备。课题成果达到了国际先进水平，在饮食行业具有广阔的应用前景，同时在同类中具有较明显的技术优势，将推动行业的技术进步，现该产品已形成产业化。该项目新增利润550万元，具有巨大的经济...