1) porous-hose
多孔软管
1.
The characteristics of the average single-hole flow of the gravity porous-hose is one of the most important characteristics of the gravity porous-hose.
多孔软管平均单孔出流量是多孔软管水力特性中比较重要的特性之一。
2) micropressure and superthin porous-hose
微压超薄多孔软管
3) breather hose
通气孔软管
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：多苯基多亚甲基多异氰酸酯
多苯基多亚甲基多异氰酸酯，简称PAPI，或称粗MDI，浅黄色至褐色粘稠液体．有刺激性气味。相对密度(20℃／20 ℃)1．2，燃点218℃。PAPI实际上是由50％MDI与50％官能度大于2以上的多异氰酸酯组成的混合物。升温时能发生自聚作用。溶于氯苯、邻二氯苯、甲苯等。PAPI的活性低，蒸气压低，只是TDI的百分之一，故毒性很低。
用于制造聚氨脂胶粘剂。也可直接加入橡胶胶粘剂中，改善橡胶与尼龙或聚酯线的粘接性能。贮存于阴凉、通风、干燥的库房内，远离火种、热源。严格防水、防潮，避免光照。
用于制造聚氨脂胶粘剂。也可直接加入橡胶胶粘剂中，改善橡胶与尼龙或聚酯线的粘接性能。贮存于阴凉、通风、干燥的库房内，远离火种、热源。严格防水、防潮，避免光照。
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