The model was made up of inner steam temperature drop equations, the steam pipe laying different ways of unit length heat loss equations, total heat resistance calculation equations.
模型由管内蒸汽温降方程、不同敷设方式蒸汽管道的单位长度散热损失方程、总传热热阻计算方程组成。
The simulation results indicated that heat pipe diameter, pipe length, tube pitch and fin structure had influence on the efficiency and pressure drop of heat pipe exchanger.
模拟结果表明，热管的管径，管长，管间距和翅片结构均影响热管换热器的换热效率和压力降。
The applicable formulae of pressure drop in the dilute flow for solid particle through a vertical pipe are developed.
文中提出了固体粒子稀相流垂直管内适用的压力损失计算式。
The impact of powder particle flow of different R/D on the bend's pressure drop and pipe wall wear is also discussed.
并讨论了不同R/D的粉体颗粒流动对弯管压力降及管壁磨损的影响。
In a word, the velocity of particle, the particle concentration and pressure drop of pipe are affected by character of particle, character of liquid and operating parameters of fluidized bed.
总之，颗粒性质、流体性质、流化床的操作参数对颗粒的浓度分布、速度分布及管路压降影响很大。
For branch network, initial flow and initial pressure drop are distributed, and initial pipe diameters are selected.
对枝状管网分配初始流量和初始压力降，从而初选管径。
Full-Port ball valves provide pressure drop equal to equivalent length of pipe, and even slightly better than gate valves.
不缩径全流道球阀具有不影响整个管道压降的性能，在此方面，甚至比闸阀性能更加优异。
Oil temperature drop and oil contraction can cause gas space growing in oil pipe and line packing during hot oil pipeline shutdown and restarting.
热油管道停输后，管内油品降温收缩，管内会产生油蒸气空间，从而使管道再启动时出现启动充装过程。
Technological calculation in a hilly multiphase pipe flow includes flow pattern prediction , liquid holdup and pressure drop calculation and temperature prediction.
多相管路的工艺计算包括流型判别，持液率和压降、温降的计算。
The result is that the pressure drop is increased rather dramatically over single-phase flow and that the liquid tends to stack up in the pipe.
其结果是两相流管道的压降比单相流动有极大的增加，而且液体在管道内堆积。
The density, viscosity and heat capacity of waxy crude oil is changed along with the temperature drop and flow type and the flow patterns are different along the pipe during the design and operation.
含蜡热油管道在设计及实际运行过程中，油品密度、粘度、比热容沿程随温度变化，沿线流型与流态也不断变化，这些都是计算管道温降必须考虑的因素。
The influencing factors of coal arch camber in planomural coal bin and coal drop pipe with rectangular or circular cross section during coal drop are studied theoretically.
对落煤过程中平壁煤仓及截面形状分别为矩形、圆形的落煤管起拱的影响因素进行理论研究。
If the water furring is too thick, heat-transfer performance will drop and the pipe may be blocked. So it's necessary to prevent the occurrence of furring.
若水垢积聚较厚，不但传热性能减弱，严重时甚至堵塞管道，因此，有必要预防和及时处理水垢的生成。
This paper discusses the relation between degree of vacuum and air flow in drop pipe when black liquor flow is constant.
本文叙述了当液体流量恒定时，水腿中（大气压管）吸入空气量与真空度的关系。
This paper discusses the relation between degree of vacuum and air flow in drop pipe when black liquor flow is constant.
本文叙述了当液体流量恒定时，水腿中（大气压管）吸入空气量与真空度的关系。
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