1)  Heat Transfer Coefficient
传热系数
1.
A new method to determine heat transfer coefficient in membrane distillation process;
一种测定膜蒸馏过程传热系数的新方法
2.
The comparison of heat transfer coefficient of imported and domestic polymerizer for the production of PVC by bulk polymerization;
进口、国产本体法PVC聚合釜传热系数的比较
3.
Determination of heat transfer coefficient of flow string during continuous gas lift;
连续气举条件下举液管柱传热系数的确定
2)  cold and hot coefficient
冷热系数
3)  thermal conductivity
导热系数
1.
Nonlinear fitting calculation of wood thermal conductivity using neural networks;
木材导热系数非线性拟合的神经网络模型
2.
General model of PR thermal conductivity and its analysis of precision prediction;
PR导热系数普遍化模型及其精度预测分析
3.
Molecular dynamics simulation of thermal conductivity of a gas in nanoscale pores;
纳米尺度孔隙内气体导热系数的分子动力学模拟
4)  heat conductivity
导热系数
1.
Study on rapid measure of metallic material heat conductivity based on laser rapid heating;
基于激光快速加热的金属材料热扩散率及导热系数快速测量方法的研究
2.
The study on the effect of basicity on molten slag heat conductivity;
碱度对熔渣导热系数的影响
3.
Finally,the heat conductivity λ of B510L steel at different temperature was obtained.
为提高卷取温度的控制精度,同时为准确模拟B510L钢轧后冷却的温度场和分析工艺参数对品种钢组织性能的影响,采用激光脉冲法测得了B510L钢的热扩散率α;采用示差扫描量热计法测得了定压比热容CP,最终求得了不同温度下的导热系数λ。
5)  Heat transfer coefficient
给热系数
1.
The heat transfer coefficient from the gas-liquid dispersion to the reactor wall was studied in an industrially practical agitated vessel.
研究了通气式搅拌槽槽壁给热系数(hw)随通气速率和搅拌转速变化的规律和机理。
2.
The mean temperature distributions along axial and film thickness directions were obtained, and the film heat transfer coefficient α under different conditions was calculated.
4建立了薄膜蒸发器内水及粘性料液的传热计算模型,获得了沿轴向及膜厚方向的液膜平均温度分布,计算了各参数下加热段液膜内给热系数α。
6)  heat transfer coefficient
换热系数
1.
Effects of surface-to-nozzle distance and high-temperature plate's surface temperature on spray cooling heat transfer coefficient;
喷雾冷却中射流出口高度和高温钢板表面温度对换热系数的影响
2.
Local and average heat transfer coefficients of coke bed in a coke dry quenching chamber;
干熄炉焦炭床层局部和平均换热系数
3.
Heat Transfer Coefficient of Cooling Water in Continuous Casting by Inverse Method;
逆向法确定铝合金连铸喷水冷却的换热系数
参考词条
补充资料:传热系数
      换热操作中热量通量 q(见传热过程)与传热推动力(温度差Δt)的比例系数,即:
  
  
  
  
   K=q/Δt它在数值上等于在单位温度差推动下于单位时间内经单位传热面所传递的热量,它与传热面积乘积的倒数为传热过程的总热阻。对于通过平壁的传热,K可表述为:
  
  
   式中 α1和 α2分别为壁面两侧的传热分系数;λ和δ分别为间壁的热导率和厚度;R1和R2分别为表征壁面两侧的垢层热阻的系数。
  
  当传热过程的温度差一定时,传热系数越大,则换热器的传热速率越高。虽然减小任何一项热阻都可提高传热系数,但当某项热阻远高于其他项时,传热系数将主要取决于此控制项的热阻。壁面热阻通常很小,可忽略不计。垢层可产生相当大的热阻,因之换热器的传热面需定期清洗。换热器设计时,控制项的热阻需准确地确定。在考虑强化传热过程时,首先设法减少控制项的热阻。
  
  传热系数的大小与冷热流体的性质、换热的操作条件(如流速、温度等)、传热面的结垢状况以及换热器的结构和尺寸等许多因素有关。对流传热十分复杂,垢层热阻又难以确定,因此传热系数的计算值与实际值往往相差较大。在设计换热器时,最好有实测值或生产中积累的经验数据作为参考。
  

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