蒸汽凝结水,steam condensation water
1)steam condensation water蒸汽凝结水
1.The main contents of water-saving in Chinese petrochemical enterprises at present are summarized;Some technical problems in water management,steam condensation water recovery and wastewater reuse are discussed;The basic process,the technical characteristics,the use range of water-saving technology and the problems to be noticed in water-saving are also introduced.归纳了目前我国石化企业节水工作的主要内容;探讨了用水管理、蒸汽凝结水回收和污水回用中的部分技术问题;介绍了节水工作的基本流程、技术特点、使用范围和应注意的问题等。
2.From the point of view of saving energy and saving water,and in combination with engineering practice,the brief review of the project and system design features for recoveringsteam condensation water for domestic hot water system were introduced,and new problems occurred in design and their solutions were analyzed.从节能节水的角度出发,结合工程实例,介绍了回收蒸汽凝结水用于生活热水系统的工程概况及系统设计要点,并分析了设计中出现的问题以及解决办法。
3.Present two main technologies of recoveringsteam condensation water , explain closed-type Condensed water recovery is a technology of high recovery rate and good energy utilization.介绍蒸汽凝结水回收的两种主要形式,并针对凝结水回收率及能源利用率高的闭式回收系统从经济及技术方面进行了可行性分析。
英文短句/例句
1.Analysis on Recycle of Steam Condensate in Automobile Industry浅析汽车生产厂蒸汽凝结水的回收与利用
2.Corrosion Analysis and Countermeasure of Steam Condensate Heating System蒸汽凝结水供暖系统腐蚀的原因分析及其处理
3.The cold wind condenses vapor into rain.冷风使水蒸汽凝结成雨。
4.Steam condensed on the kitchen windows.水蒸汽凝结在厨房的窗户上。
5.Steam condenses into water when it touches a cold surface.蒸汽触及冷的表面时即凝结成水。
6.The drop in temperature condenses the steam into water温度下降使蒸汽凝结成水。
7.Steam is condensed to water when it touches a cold surface.蒸汽触及冷的表面即凝结成水。
8.The steam is therefore cooled,and it condenses back to water.蒸汽因而得到冷却,并凝结成水。
9.Experiment Study of Vapor Condensation and Heat Transfer in Vacuum Horizontal Tubes;真空水平管内蒸汽凝结换热实验研究
10.Steam is condensed in the condenser.蒸汽在冷凝器中凝结。
11.The requirements for supervision of recovery of conde nsate from steam heating system and technique of auto matic steam trapsGB/T12712-1991蒸汽供热系统凝结水回收及蒸汽疏水阀技术管理要求
12.There is always frozen water in front of the trap forming water block to avoid steam leaking.阀前始终有凝结水，形成水封，无蒸汽泄漏。
13.boiler steam and condensate system锅炉蒸汽和凝水系统
14.The condenser is of the direct-contact type, since the steam does not have to be condensed separately from cooling water and returned to a boiler.凝汽器为直接接触式,因蒸汽不必与冷却水隔开凝结并返回至锅炉。
15.If steam touches cold surfaces,it condenses into water.如果蒸汽接触冷的表面,它就会凝结成水。
16.On Condensation Characteristics of Vapour Spewing Supper-cooling Water Surface Vertically;蒸汽垂直喷向过冷水表面时的凝结特性研究
17.The Application of the Closed-type Pressed Condensed Water Recycling Technology in the Steam Heating闭式加压凝结水回收技术在蒸汽采暖中的应用
18.To cause(water vapor)to condense and fall from the air as rain, snow, sleet, or hail.使凝结而下降使（水蒸汽）凝结形成雨、雪、雨夹雪或冰雹从空中降下
相关短句/例句
steam condensate蒸汽凝结水
1.Water steam ejector application in closedsteam condensate recovery system;蒸汽凝结水密闭式回收系统中水抽汽喷射器的应用
2.Steam condensate was produced by steam exchanging heat during oil refining.蒸汽凝结水是在石油炼制生产过程中蒸汽经换热后凝结产生。
3)Steam,condensate蒸汽,凝结水
4)steam condensate蒸汽凝结水，蒸汽冷凝水
5)steam condensing water reuse蒸汽凝结水回用
6)boiler steam coagulation water锅炉蒸汽凝结水
延伸阅读
蒸汽凝结换热蒸汽凝结换热steam condensation heat transferJ/kg，g为重力加速度，m/s，;l为壁高，m;T.和Tw分别为燕汽和壁面的绝对温度，K;p、产和风分别为流体的密度、动力猫度和导热率。随壁面的几何形状、位t以及流态的不同，膜状凝结换热计算公式也不同，可从有关手册中查得。利用表面张力改变液膜厚度以增强换热是强化膜状凝结换热的主要途径.例如，低螺纹管比光管表面的凝结换热要增强2~3倍;而具有锯齿形肋的管面又要比低螺纹管增强80%左右;若在其上设计适当的导液带以加速凝结液的排出，则换热系数可比光管表面提高一个t级而与珠状凝结的换热强度相当。蒸汽中若拾混有非凝结气体(如火电厂凝汽器中漏人的空气)，则换热系数会大大降低。例如，在一般凝结温差下，当燕汽中的非凝结气体的容积含量为。.5%时，换热系数会降低约50%.珠状凝结换热根据实验测定，珠状凝结换热系数比膜状凝结换热系数高一个量级以上。例如，水蒸气在大气压下的珠状凝结换热系数约为4x10‘~10sw/(mZ·K);而膜状约为6X103~104W/(mZ·K)。因此，近年来国内外都在这方面加强研究.寻求合适的表面涂层或添加剂以形成持久的珠状凝结。在这方面虽然获得了许多进展，但迄今为止仍然没有找到一种既经济、又能长期维持珠状凝结的工业途径。zhengq一ningl一e huonre燕汽凝结换热(steam eondensation heattransfer)蒸汽与低于其饱和温度的冷却壁面接触而凝结时的换热过程，属于具有相变特点的两相流换热。分类由于凝结液对壁面的润湿情况不同，蒸汽凝结换热又可分为两种形式:当凝结液能很好地润湿壁面时，则能形成液膜彼盖整个壁面向下流动，称为膜状凝结换热;若凝结液不能润湿壁面，如水银燕汽在金属壁面上的凝结，则凝结液不能润湿壁面并聚成一预顺液珠，称为珠状凝结换热。凝结液对壁面的润湿能力是表面张力和它对壁面附着力综合作用的结果。若附着力大于表面张力，则会形成膜状凝结.反之则形成珠状凝结。膜状凝结换热膜状凝结时，蒸汽与壁面被一层液膜隔开，蒸汽只能在液膜表面上凝结，释放出的汽化僧热则以导热和对流方式通过液膜传给壁面.因此，液膜的厚薄、流速、物性参数以及运动状态(层流或湍流)都对换热系数影响很大，而流速、液态以及膜厚又与凝结液和蒸汽之间的密度差、液体的猫度、壁面的高度以及燕汽与壁面之间的温差等因素密切相关。19德国学者L.努塞尔(Ludwig Nusseh)提出光滑液面的层流液膜的换热模型，并从理论上最先导得垂直壁面上层流膜状凝结换热计算式a=o·9433[尸，g孟，r/l产(T一T，)j’“w/(mZ·K)尔后，大量的实验研究揭示出上述理论值是偏低的。这主要是因为液膜向下流动时由于表面张力诸因素作用的结果，使液膜表面发生波动，从而强化了传热。根据大量实验数据综合得出竖壁上的层流膜状凝结换热公式为(约比理论值高20%) a=1 .13[PZg又，r/lp(T，一T，)]，“w/(m，·K)式中口为平均换热系数，W八mZ·K);r为汽化潜热，
