The calculation results show that the tube diameter has a significant influence on the average heat transfer factor.
计算结果证明管径对平均换热系数的影响不容忽视。
This paper reports an experimental study of the local and average heat transfer and the pressure drop of supercritical CO2 in multi-port channels.
进行了微通道内超临界CO2的局部和平均传热与压降特性实验研究。
Under the constant blow ratio, the higher the mainstream velocity is, the higher the average effectiveness and average heat transfer coefficient are.
同一吹风比下，主流速度较高的，平均效率及平均换热系数也较高。
And the average heat transfer coefficient near the slots is different between different blow ratios, while far away from the slots, the difference diminish.
在主流速度较低时，这种情况并不明显。不同吹风比下反应出来的平均换热系数的差别在靠近缝口的区域较明显，沿下游方向这种差别逐渐减少。
Then average heat transfer coefficient of building external wall and heat transfer coefficient of building block filling wall by calculating were calculated.
由于常规算法的局限性，在实际项目中换算外墙平均传热系数与外墙主墙体传热系数需要计算的工作量较大。
Based on the fact, a simplified drying model of heat and mass transfer is deduced from volume average theory.
对多孔介质体积平均理论进行简化，得到简化的热质传递干燥模型，用一个理论式表达模型中有效扩散系数。
In high Reynolds number range of 10,000 ~ 90,000, the flow friction factor, local and average convection heat transfer coefficients were determined.
在10,000 ~ 90,000的高雷诺数范围内，测量了流动摩擦系数、局部和平均对流换热系数。
The evaporation temperature has negligible effect on the average evaporation heat transfer coefficient at the same oil concentration.
同一含油率下，蒸发温度对平均换热系数影响不大。
A transient testing technique for measuring average convection heat transfer coefficients of compact heat exchangers is suggested.
提出了一种紧凑式换热器平均表面传热系数瞬变测试方法。
By experiment, the curves and equations of relationship between the heat transfer coefficient and parameters of average diameter, particle size distribution and particle speed are obtained.
用试验方法研究了固体粒子绕流园管的换热系数，得出了换热系数与固体粒子的平均直径、粒度分布、颗粒运动速度等参数的关系曲线和关系式。
When the average diameter was different, the effective heat transfer coefficient decreased with increasing particle diameter.
当颗粒的粒径增大，有效传热系数降低；
The results are as follows: at low velocity, the heat transfer coefficient is nearly proportional to the average velocity and velocity and temperature gradient are in good synergy.
结果表明：当流速很低时，速度与换热系数几乎成线性变化，场的协同性很好；
The results are as follows: at low velocity, the heat transfer coefficient is nearly proportional to the average velocity and velocity and temperature gradient are in good synergy.
结果表明：当流速很低时，速度与换热系数几乎成线性变化，场的协同性很好；
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