传热传质性能,Heat and mass transfer performance
1)Heat and mass transfer performance传热传质性能
1.The research showed that the circumferential inlet wind was well-proportioned and axisymmetric under windless conditions,that is,the heat and mass transfer performance through fillings zone was also axisymmetric.研究表明:无风时,塔底周向进风是均匀轴对称的,即塔内填料各处的传热传质性能也是轴对称分布的。
英文短句/例句
1.Experimental Research on the Performance of Heat and Mass Transfer in a Membrane-Based Enthalpy Heat Exchanger;膜式全热换热器传热传质性能的实验研究
2.Performance Prediction for Evaporative Refrigeration and Heat and Mass Transfer in Porous Media多孔介质蒸发制冷及传热传质性能的研究
3.Study on Heat and Mass Transfer in Soft Gelatin-Capsules in the Process of Convective Drying;对流干燥过程中明胶软胶囊传热传质性能的研究
4.Investigation on the Influences of Heat and Mass Transfer on the Performances of Three-Source Thermodynamic Cycles;传热、传质对三源热力循环性能影响的研究
5.Investigation on Mechanism and Performance of Heat Transfer in Oscillating Heat Pipes;振荡热管传热机理及传热性能的研究
6.Study of Improving Heat and Mass Transfer Performance Based on Coupled Heat and Moisture Transfer Characteristics基于热湿传递耦合特性提高热质传递性能的方法研究
7.Press Drying Technology and Properties of Heat Transmission and Mass Transfer of Bamboo Timber of Dendrocalamus Giganteus;龙竹竹材的热压干燥及传热传质特性
8.The ability or power to conduct or transmit heat, electricity, or sound.传导性传导热、电、或声音的能力或能量
parative Study on Pyrolysis Characteristic of Energy Crops and Traditional Biomass能源作物与传统生物质热解特性对比研究
10.Heat and Mass Transfer Characteristics in the "Zeolite-Water" Closed Adsorption Cycle“沸石-水”封闭吸附循环的传热传质特性
11.internal mass and heat transfer反应相内传质和传热
12.external mass and heat transfer反应相外传质和传热
13.The testing method of heat transfer performance for gravity heat pipeGB/T14812-1993重力热管传热性能试验方法
14.Experiment Study on Heat Transfer of Underground Heat Exchanger for Ground Source Heat Pump;地源热泵地埋管的传热性能实验研究
15.Study on Heat Transfer Characteristics of Conductive Plastic Ice-on-Coil;导热塑料盘管蓄冰槽传热性能的研究
16.Research on Heat Transfer Performance of Helical-Rib Gravity Heat Pipes with Small Diameters;小管径螺纹重力热管的传热性能研究
17.The Analysis to the Engineering Heat Raditor Performance of the Mobile Passenger Boarding Bridge;移动登机桥散热器工程传热性能分析
18.Investigation of the Heat Conduction and Thermoelasticity for Functionally Graded Material Plates功能梯度材料板热传导及热弹性研究
相关短句/例句
heat transfer character传热性质
3)heat transfer performance传热性能
1.Effect of fouling onheat transfer performance of heat exchanger;污垢对换热器传热性能影响
2.Study on theheat transfer performance of spray falling film evaporator with T-shaped fin plates;T型翅片板喷淋式降膜蒸发器传热性能研究
3.Study on drag-reducing andheat transfer performances in heating water systems with CTAC additives;供热水系统CTAC减阻流体减阻与传热性能研究
4)heat transfer property传热性能
1.Numerical research of shell side sheat transfer property for different shell-and-tube heat exchanger;管壳式换热器壳程传热性能比较
2.Research on theheat transfer property of 105 m3 polymerizer for the suspension polymerization of vinyl chloride;105m~3氯乙烯悬浮聚合釜传热性能研究
3.Taking the recycle of residual heat as an example, an advanced method to evaluateheat transfer property of heat exchanger is proposed according to the quantity of entropy change of a heat-pipe heat exchanger in the course of heat transfer.热管是一种具有特别高的传热性能的传热元件,简述热管的工作原理,以回收余热的热管换热器为例,通过分析热管换热器在传热过程中的熵变量,提出一种评价换热器传热性能的方法。
5)heat transfer properties传热性能
1.Theheat transfer properties of black liquor from wheat straw pulping in a tank with agitator were studied by changing the experiment conditions including temperature difference driving force, geometry shape of the tank and agitator speed.通过改变传热温差以及搅拌槽几何构型和桨叶转速等实验条件 ,研究了麦草浆黑液在不同物性、流变特性、流体动力学条件及流动空间几何特征下的传热特征 ,并且应用传统数学建模及人工神经网络方法 ,建立了麦草浆黑液相关的传热数学模型与评价指标 ,结果表明 ,上述因素对麦草浆黑液传热性能有深远的影
2.This paper summarily introduces how to research theheat transfer properties of black liquor from wheat pulping in the conditions of different physical properties, rheology, fluid dynamic conditions and fluid space geometry characteristics.概括介绍了如何研究麦草浆黑液在不同物性、流变特性、流动动力条件及流动空间几何特征下的传热性能 ,采用人工神经网络的方法建立相关的传热数学模型与评价指标 ,进而为找出提高麦草浆黑液传热效率的方法与途径做一定的理论铺
6)heat transfer characteristics传热性能
1.3D numerical analysis ofheat transfer characteristics for H-type finned tube;H形鳍片管传热性能的三维数值模拟计算
2.Effect of oblique angle on flow andheat transfer characteristics of a turbulent impinging slot jet;倾角对湍流狭缝冲击射流流动与传热性能的影响
3.Analysis of Heat Transfer Characteristics of High Temperature Heat Pipe Fins;高温热管翅的传热性能分析
延伸阅读
边界层传热传质物体与气流作高速相对运动时，在紧贴物面的边界层中，气体的温度和速度等会发生剧烈变化，并常伴随出现热和质量交换的现象。这种现象称为边界层传热传质。运动速度愈高，这种交换愈剧烈。高速闯入大气层的流星体就是例子。再入大气层的航天器的表面和喷气发动机的内部也存在边界层传热传质现象。这种现象直接影响有关部件的设计，因而是高速空气动力学的一个重要研究内容。高速气流在物体表面会产生剧烈温度变化的主要原因是：由于粘性作用，高速运动的气流在边界层内被物体表面减速，气体动能转化成热能，被减速的部分气体温度剧增并达到远高于物体表面的温度，于是热量便由物体表面传入物体内部。滞止压力为一个大气压力。所谓滞止压力是指在气流压缩时其熵不增加的情况下，气流减速到静止时的压力，相应的温度为滞止温度。对于不同飞行速度，空气可达到的滞止温度值见下表。由表可见，高速飞行器表面的传热现象很显著。除了气流的速度以外，影响边界层传热的还有下列几种因素：①气流成分和化学状态：不同的气体有不同的热力学性质和输运性质，在高温下有不同的化学反应和反应速率，从而产生不同的热效应。②绕流物体的形状：不同形状的物体，表面压力分布不同，边界层内气体流动的状态也不同。③边界层的流态：边界层有两种基本流态，层流和湍流。如果其他条件相同，湍流的热交换比层流大得多。④表面光滑度:在同样的情况下,粗糙表面的热交换比光滑表面剧烈得多。⑤表面有否质量交换：由于高速飞行器表面和喷气发动机内壁温度很高，一般材料会被熔化和烧穿，所以采用防护手段。防护手段一般都采用质量交换的方法。如"发汗冷却"法，使能气化吸热的物质泄出物体表面，气化产生的气体起着一层低温隔热气垫的作用，使整个边界层变厚，温度变化变缓，减少气流传热。"烧蚀"法防热的原理也与此类似。研究上述因素对边界层传热的影响是边界层传热传质的重要研究课题。高速气流在边界层内因粘性作用被物体表面减速,气流给物体的反作用则形成摩擦阻力。摩擦阻力、传热、传质现象实质上反映边界层中动量、能量、质量交换的过程。在一定条件下,三者有相似性,这种相似性常被用来简化传热传质的理论计算。研究边界层传热传质的主要理论方法是高速边界层理论及其有关数值计算方法。随着计算机的发展，也可直接从纳维－斯托克斯方程求解边界层传热问题。风洞实验、弹道靶实验和模型飞行试验等是研究这一问题的主要实验手段。参考书目J.P.Hartnett, et al., Recent Advances in Heatand Mass Transfer,McGraw-Hill,New York,1961.
