1) petal shaped fin tube
花瓣状翅片管
1.
Heat transfer and pressure drop characteristics of petal shaped fin tube and low finned tube heat exchanger with helical baffles were introduced,in which compressed air folwing in the shell side.
以现场的压缩空气为工质 ,分别对花瓣状翅片管 (以下简称为 PF管 )与低肋管在螺旋隔板支承下的传热与流阻性能进行实验研究。
2.
In this paper,it introduced heat transfer and pressure drop characteristics of different tubes,Petal shaped fin tube and Low finned tube,under helical baffles,while compressed air flowing in the shell side.
以现场的压缩空气为工质，分别对花瓣状翅片管（ＰＦ管） 与低肋管在螺旋隔板的支承下的传热与流阻性能进行了实验研究，研究结果表明花瓣状翅片管比低肋管具有更优越的传热性能，在同等的传热量下，ＰＦ管螺旋隔板换热器的气侧传热系数比低胁管螺旋隔板换热器高出２０ ％ ～５０ ％ ，其压力损失比低肋管低３０ ％ ～４０ ％ 。
2) Petal fin formed tube
花瓣状翅片管
1.
Experimental study is conducted to investigate heat transfer enhancement and flow resistance performance of air transversal flow over Petal fin formed tube,and mechanism of heat transfer enhancement is also analyzed herein.
以空气为介质横向冲刷花瓣状翅片管（包括单管与管束）进行强化传热与流阻性能实验研究，并对其传热强化机理进行分析，结果表明，花瓣状翅片管的非连续周向翅片具有极好的传热强化效果，在实验范围内（Ｒｅ＝１０３～２×１０４），本文提出了横向冲刷花瓣状翅片管传热性能的计算方法与理论分析模型，其计算结果与实验值符合良好。
2.
Experimental study is conducted to investigate the performance of heat transfer enhancement and flow resistance of air longitudinal flow over smooth tube and Petal fin formed tube in shell side of heat exchanger.
以空气为介质，以纵向流动方式冲刷光滑管与花瓣状翅片管进行管壳式换热器壳程的传热强化与流阻性能实验研究。
3) petal shaped fin tube
花瓣形翅片管
1.
The situation,progress and achievement in enhancing heat transfer research of petal shaped fin tube under condensation heat transfer of low surface tension working fluid and its mixture,and the steam including air,and cooling heat transfer of air and oil conditions ,and its practical application prospect are surveied in this paper.
综述了花瓣形翅片管在低表面张力介质及其混合物中的冷凝强化传热、含不凝性气体水蒸气的冷凝强化传热以及空气和油的冷却强化传热等方面的研究概况、进展、成果及其工业应用前景。
2.
In this paper, the heat transfer performance of foed convective Condensation and the heat transfer enhancement mechanism on the petal shaped fin tube (PF tube) are studied.
本文研究了花瓣形翅片管（ＰＦ管）在水平套管之环形通道内强制对流冷凝的传热性能及传热强化机理。
4) Bundle of petal-shaped finned tube
花瓣形翅片管管束
5) PF shaped tube bundle
花瓣型翅片管管束
1.
Complete condensation of nonazeotropic binary mixtures R 11 /R 113 on the PF shaped tube bundle has been investigated.
对非共沸混合物Ｒ１１／Ｒ１１３在花瓣型翅片管管束外的全冷凝过程进行了实验研究，结果证实花瓣型翅片管能较好地强化非共沸混合物Ｒ１１／Ｒ１１３的冷凝以及管束效应很小。
6) drop-shaped finned tube
滴状翅片管
1.
Tests were conducted of the heat transfer and resistance performance of drop-shaped finned tubes and test results obtained under different air velocities and temperatures are presented.
对滴状翅片管的传热及阻力性能进行了试验,给出了不同风速、温度下的试验结果。
补充资料：管状定向碳纳米管
纳米本意是一种长度单位,纳米材料是指材料的尺寸处于1~100nm范围内的金属,金属化合物,无机物或高分子的颗粒,对纳米材料的研究和开发依赖于能看清原子或分子世界的仪器,1993年12月中国科学院庞世瑾教授在硅表面搬走了原子,写下了"中国"的字样,人类按需要排布一个个原子的技术成为现实,前不久,我国科学家成功合成了3nm长的管状定向碳纳米管,长度居世界之首,这种碳纤维具有强度高,刚度(抵抗变形的能力)高,密度小,熔点高,化学稳定性好的特点.
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