1) straight pipe with holes
多孔直管
2) multihole bars
多孔直杆
1.
The author discusses the boundary element method (BEM )for the problem of elastic torsion of the multihole bars, and proves that finding the solution of the nonlocal boundary value problem is equivalent of finding the solution of the corresponding boundary integral equation.
讨论了用边界元法解多孔直杆弹性扭转问题，证明了求具有等值面边界条件的非局部边值问题的解与求对应的边界积分方程的解是等价的，并将计算中出现的区域积分全部化为边界积分，从而减少了所需准备的初始数据和计算时间。
3) vertical multi-hole
多排垂直孔
4) porous surface tubes
多孔管
1.
Comparison of physical models of boiling heat transfer of porous surface tubes for heat exchangers;
换热器用多孔管沸腾传热物理模型比较
2.
Study of scaling characteristics on sintered porous surface tubes with copper nickel alloy base in NaCl solution;
烧结型白铜多孔管在NaCl溶液中的结垢性能
5) porous surface tube
多孔管
1.
Aiming at the questions of high energy consumption after the technological modification for enlarging its production,three retrofit schemes are presented:Using a high-efficient lamella heat exchanger instead of the conventional shell and tube heat exchanger,using a high flux porous surface tube in the reboiler,and using a water heat medium preheater to recover three furnaces' surplus heat.
介绍了某厂芳烃歧化装置的工艺流程,针对该装置扩能改造后出现能耗较高的问题,提出了改造方案:采用高效板壳式换热器更换传统的管壳式换热器,再沸器内采用表面多孔管高通量换热管,同时将3台加热炉联合共用1套水热媒空气预热器进行系统改造,可有效地解决现行装置的用能瓶颈,节能效果显著。
2.
In this paper, the heat transfer performance of the pin-fin tube, porous surface tube and smooth tube which are all made of B30 was first researched on the condition of convection.
本文以B30针翅管、多孔管和光滑管为研究对象，以水为冷却工质，对几种管型在对流工况下的换热特性进行实验研究；并根据实验结果，对比各种换热管的传热能力，以寻求实用的最佳换热管，优化换热器的性能。
3.
In this paper,water was used as boiling medium,and the boiling heat transfer characteristics of smooth tube and three other kinds of enhanced tubes including integral pin-fin tube,porous surface tube and winded pin-fin tube were studied experimentally.
整体针翅管表面大量螺旋排列的三维翅片增大了换热面积、延缓了汽泡在壁面附近聚合形成大汽膜,使沸腾换热得到强化;多孔管采用机械方法在壁面加工出大量微细小孔,汽化核心数量和汽泡脱离频率均大幅提高,因此,沸腾换热强化效果显著;绕丝针翅管是一种复合强化手段,兼有整体针翅管和多孔管的优点,沸腾换热强化效果也较好。
6) perforated pipe
多孔管
1.
The dimensionless formulae of pressure head curve was deduced by establishing fluid differential equation of perforated pipe and a theoretical method to calculate the catch uniformity of perforated pipe was given.
多孔管广泛用于给水排水设备的配水和集水系统中。
2.
In this paper,thetype of flow in perforated pipe was analysed,and the influence of which on calculating waterhead losses was simulated by computer programme.
大量计算表明，灌溉中使用的小流量多孔管的首端流态一般是紊流光滑区和紊流过渡区，而在末端或多或少出现一定长度的层流段。
补充资料：多孔层开管柱
分子式：
CAS号：
性质：在开管柱内壁上用适当的方法沉积上一层多孔性物质(如硅藻土、硅烷化硅胶、分子筛等)，即为多孔层开管柱。多孔性物质可做吸附剂用，也可做为载体再涂固定液使用。多孔性物质作为载体用的又称涂载体开管柱(support-coated open tubular column)。多孔层厚度约为0.1mm。与涂壁开管柱相比，它的内表面大，柱容量大，固定液流失减少，柱寿命增加。
CAS号：
性质：在开管柱内壁上用适当的方法沉积上一层多孔性物质(如硅藻土、硅烷化硅胶、分子筛等)，即为多孔层开管柱。多孔性物质可做吸附剂用，也可做为载体再涂固定液使用。多孔性物质作为载体用的又称涂载体开管柱(support-coated open tubular column)。多孔层厚度约为0.1mm。与涂壁开管柱相比，它的内表面大，柱容量大，固定液流失减少，柱寿命增加。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条