虹吸管的

A new method of enhancing heat transfer of the heating section of a two—phase closed thermosiphon has been proposed .

本文提出了一种新的提高传热的方法—在以水为工作液体的两相闭式热虹吸管中添加一定数量的纳米颗粒。

Theoretical and experimental studies were carried out on the performance of heat transfer enhancement by adding a proper amount of nanoparticles to the thermosiphon with water as working fluid.

提出了一种新的提高传热的方法——在以水为工作液体的两相闭式热虹吸管中添加一定数量的纳米颗粒。

And, theoretical and experimental studies have been carried out of the performance of the heat transfer enhancement by adding a proper amount of nanoparticles to the thermosiphon with water as the working fluid. Compared with the ordinary thermosiphon, results indicate that this heat pipes posses such advantages as good startup, lower tube wall temperature, and its heat transfer coefficient is increased by 47～96%, heat flux is increased by 7.6～15% in the range of the experiment. The performance of the heat transfer relates to the diameter and the volume fraction of nanoparticle.

理论和实验的研究了这种热虹吸管蒸发段的工作特性，结果表明，与普通热管相比较，这种新式热管具有很好的启动特性，低的管壁温度，换热系数提高了47～96％，轴相热流率提高了7.6～15％，其换热性能随纳米颗粒粒径的减小而增大，随纳米颗粒加入量有所增加，当超过一定量时换热性能反而降低了。

Although the TSOT heat exchanger has been successfully applied in the realm of heat-recovery in industrial boilers and furnaces, the mechanisms of TSOT and its effects of some elements on its heat transfer features are unknown. Reports about the TSOT research have seldom seen. So it is not only urgent but also important to do some investigations on TOST to enrich the heat pipe theory and guide engineering design.

由侧端切向开漩流孔的半开式热虹吸管制成的热管换热器已在工业锅炉、窑炉中初步得到成功应用，但对其内部的机理和有关影响因素尚不十分清楚，在国内、国外文献资料中对该种热管的相关研究资料的报道也较少，因此，迫切需要进行相应的研究，以丰富热管理论并指导工程设计。

By analysing the influencing factors of heat transfer efficiency of thermosyphon heat exchangers and the practical operating data of an experimental heat recovery unit used in a shopping center, and concerning about the influence of unit incline angle on the temperature efficiency of heat exchangers under a wide variable scope of outdoor air temperature, obtains an optimal operating mode of the unit.

在分析热虹吸管换热器换热效果影响因素的基础上，通过分析试验机组在商场空调系统实际应用环境中的运行数据，综合考虑室外新风温度大范围变化、不同倾斜角度对换热器温度效率的影响，得到了实际运行环境下机组的适宜工作模式。

Minute sedentary marine invertebrate having a saclike body with siphons through which water enters and leaves.

微小的不移栖的海洋无脊椎动物，它们的身体呈囊状并带有可吸进和吐出水的虹吸管。

Galvanized sheeting Base trim Galvanized gable sheeting angle Siphon groove to disperse water Mastic sealant on roof Corrugated ridge cap Self-drilling and self-tapping screws with preassembled neoprene washers with metal caps Oversize fasteners and extra screws Community freight reduces shipping cost Factory trained inventory of parts at jobsite Pre-marked parts for easier erection Anchor bolts plans, erection manual and construction drawings Factory Limited Warranty available upon request Full trim on door openings Eave, gable, and base closures

镀锌了覆盖的基本的修剪被镀锌的山墙覆盖的角度虹吸管凹线对分散剂水乳香树脂密封胶，并且自动攻丝螺杆与被预装配的氯丁胶洗衣机与金属加盖特大紧固件，并且额外螺丝公共货物减少零件运费工厂训练的存货在jobsite 前被标记的零件为更加容易的架设固定螺栓计划、架设指南和结构图工厂有限保证可利用的根据需要充分的修剪在门开头房檐、山墙和基本的关闭

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐