采用工业试验的方法对两台分别燃油及燃煤的电站锅炉的热管式空气预热器灰污系数的确定进行了分析和研究。
Determination of fouling factors of heat pipe air preheaters for two utility boilers burning oil and coal respectively are implemented through industrial experiments.
振动流化床水平换热管的传热系数随颗粒粒径的增大而减小。
It is also found that the local heat transfer coefficients of horizontal tube exhibit a general tendency to increase with decreasing particle size.
对于无内置管的三相流重力热管，随着加热功率的增加，等效对流传热系数增大。
For the three-phase flow gravity heat pipe without built-in pipe, the equivalent convective heat transfer coefficient increases as the heating power increases.
其中，重点对通过热管技术和高导热材料技术来实现等温化进行了说明，并分析了舷窗法兰框在不同传热方向上的等效导热系数。
Addtionally, on the basis of the two techniques, the equivalent heat conductance coefficient of the porthole flange in different heat transfer direction is analyzed.
对不同翅片内插件高温换热管辐射传热对整体换热系数的影响进行了讨论。
With each insert, friction factor characteristics and the effect of radiant heat transfer enhancement to overall heart transfer coefficients are analysed.
通过对施工变量、运行变量的工程测量及计算得到三种规格的预制直埋供热管道与回填砂的摩擦系数样本值。
The swatch values of friction factor of three kinds of precast buried heating pipe and backfilling sand is calculated.
在操作气速0.1ms-1、振幅2mm及振动频率1100min-1的条件下，振动流化床水平换热管的传热系数达到最大值。
The results show that heat transfer coefficient reaches maximum value under the condition of gas velocity of 0.1ms-1, vibration amplitude of 2mm and frequency of 1100min-1.
给出了振荡热管的径向和轴向当量导热系数；
The equivalent thermal conductivity of oscillating heat pipes in radial and axial direction was presented.
通过改变集热管进口空气流量来获得尽可能高出口温度的热空气，从而降低热损系数，提高集热效率。
Through experiments of changing the inlet air flow rate, we can adjust the hot air outlet temperature as high as possible, which helps to reduce the heat loss and improve the collector efficiency.
根据实验结果总结出了工质、充液量和热流密度对热管传热系数的影响。
The effects of the different working fluids and their filling rates, and the density of the heat flux on the heat transfer coefficient of the heat pipe were summarized from the experiment results.
根据实验结果总结出了工质、充液量和热流密度对热管传热系数的影响。
The effects of the different working fluids and their filling rates, and the density of the heat flux on the heat transfer coefficient of the heat pipe were summarized from the experiment results.
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