soil retardants

用法例句

Through determining the specific resistance of sludge to evaluate the dewatering performance,the feasibility and economy of disposing the dredged sediment from a lake in Wuhan by mechanical dewatering method were discussed.

通过测定污泥比阻值来评价污泥的脱水性能,探讨采用机械脱水的方法处理武汉某湖泊疏浚底泥的可行性和经济性。

The change of the sludge particle size and the relation-ship between the sludge particle size and specific resistance of sludge were also discussed.

研究了阴离子型聚丙烯酰胺(PAM)对给水厂排泥水沉降性能和浓缩污泥脱水性能的影响,探讨了污泥颗粒粒径的变化及其与污泥比阻的关系。

It is shown through the results adding fly ash is the best with a propriety grain size of 53μm(280) plus sieve,best adding 22g/100mL,the specific resistance of sludge 0.

通过污泥比阻的测定试验,研究了添加助凝剂粉煤灰、改性硅藻土后对昆明污水厂污泥的脱水性能影响。

The heat resistance of fouling in both tube is measured during a certain period.

实验结果显示轧槽管的污垢热阻约为光滑管的0。

Experimental investigation shows that the heat resistance of fouling in corrugated tube is 0.

在综述管壳式换热器和板式换热器国内外污垢研究的基础上,介绍了轧槽管防垢性能实验和污垢模型,轧槽管的污垢热阻为光管的0。

Furthermore,the results of dynamic experiment indicate that,the fouling resistance decrease extraordinarily with treatment of high-voltage electrostatic field, and anti-fouling .

动态实验结果表明,成垢溶液经过高压静电处理以后,污垢热阻明显减小,流速的增大能够增强抗垢能力。

From the initial experiments, it is proved that this system can work well for long time and can measure the fouling resistance accurately.

介绍了新开发的污垢热阻实验装置及其计算机测检系统 ,阐明了这一装置开发的理论依据、测控系统的集成和能实现的功能 ,并对装置的运行结果进行了分

The in-surface and out-surface vibrations which come from the flow-induce spring tube bundles, can not only effectively increase the convective heat transfer coefficient, but also decrease the fouling resistance, then increase the heat transfer coefficient remarkably.

弹性管束在流体诱导下的面内振动与面外振动,可以低流速下在提高对流换热系数,降低污垢热阻,使传热效果显著增强。

Correction and application of on-line prediction model for fouling thermal resistance

污垢热阻实时预测模型校正与应用

Experimental research of fouling thermal resistance on heat exchangers in sewage source heat pump system

污水源热泵系统中换热器污垢热阻的实验研究

Little compound scale inhibitor into the solution can make fouling thermal resistance decrease extraordinarily,and the scale inhibition rate can reach to about 98%.

成垢溶液添加复合阻垢剂之后,污垢热阻大为减小,阻垢率达到98%左右。

Appling hydromechanics and aerosol mechanics theory,the deposition mechanism of fouling on the shell-side of the shell-tube air cooling exchanger is researched and a method of estimating fouling heat resistance is put forward.

本文应用流体力学和气溶胶力学的基本原理，分析了光管管壳式空气冷却器壳侧污垢的沉积机理，从理论上得出了一种估算壳侧污垢热阻的方法，该方法对设计人员和工程技术人员均有一定的参考价值。

Obtains the variation pattern of the fouling heat resistance with time,the relations between the balance thickness of fouling and the velocity and between the heat resistance of the heat exchanger and the velocity,and a ratio of the total heat transfer coefficient before fouling forming to that after fouling forming.

介绍了污垢生长监测方法,并以哈尔滨望江宾馆和北京悦都酒店为测试对象,对换热器内污垢生长作了实时监测,得出了污垢热阻随时间的变化规律、污垢的平衡厚度和换热器热阻与流速的关系以及换热器结垢前后总传热系数的比。

The problems encountering in the operation were analyzed and discussed in aspects of fouling components,flow characteristics,heat transfer characteristics,fouling heat resistance,etc.

介绍了广州地铁海珠制冷站采用珠江水直接冷却工程的应用情况,针对运行中出现的问题,从污垢成分、流动特性、换热特性与污垢热阻等几个方面进行了分析与探讨,提出利用直流水(江河水、城市污水、湖水、地下水、海水等)冷热源需要进一步解决的问题。

Experimental research of fouling thermal resistance on heat exchangers in sewage source heat pump system

污水源热泵系统中换热器污垢热阻的实验研究

Development of a New On-Line Monitor on Fouling Resistance and Its Applied Research;

新型污垢热阻在线监测装置的研发与应用研究

Uncertainty Analysis on an Online Measurement Method for Monitoring Fouling Resistance of Chiller

冷水机组污垢热阻在线检测方法不确定度分析

It traps dirt and other matter and keeps insects out.

它阻挡污垢和其它东西，阻止昆虫进入。

Research on Fouling Growth Characteristic in Heat Exchanger of Sewage Source Heat Pump System;

污水源热泵系统中换热器内污垢生长特性研究

Research about Anti-scaling Technology of HRI Geothermal Well in Hohhot;

呼和浩特市HRI地热井阻垢技术研究

THE THEORY AND REALIZATION OF FOULING ON-LINE MONITORING ON THE HEATING SURFACE OF BOILER

锅炉受热面污垢在线监测理论及应用

DEVELOPMENT OF A NOVEL ANTI-BIOLOGICAL FOULING RO MEMBRANE SCALE INHIBITOR AND THEIR PERFORMANCE

新型抗生物污染反渗透膜阻垢剂的研制及性能

PREPARATION OF CORROSSION AND SCALE INHIBITOR WITH LIGNIN EXTRACTED FROM PAPER MILL SLUDGE

从造纸污泥中提取木质素制备缓蚀阻垢剂

Research of Fouling Formation and Condensation Heat Transfer on Modification Heat Transfer Surface

改性换热表面污垢形成及凝结传热研究

Corrosion and inhibiting techniques of gas heating furnace Ⅱ.Pre-filming and corrosion-scale inhibition

天然气加热炉腐蚀防垢技术研究 Ⅱ.预膜与缓蚀阻垢

The Experimental Investigation of the Heat Transfer and Fouling Characteristics on Several Enhanced Tubes;

几种强化管的传热特性及污垢特性的实验研究

Heat Transfer Enhancement Mechanism and Fouling Development Outside Vibrating Pipe;

振动圆管外强化传热机理及污垢生长特性研究

Experimental Study on Heat Transfer and Fouling Characteristics of Spirally Corrugated Tube

螺旋槽管传热特性与污垢特性的实验研究

Build of Experiment Device About Municipal Secondary Effluent Fouling and Preliminary Experiments

城市二级出水换热污垢实验台搭建及初步实验

Fouling formation and its impact on shell and tube type heat exchanger design

污垢的形成及其对壳管式换热器设计的影响

Composition and morphology of composite fouling by municipal secondary effluent on heat transfer surfaces

城镇二级出水换热表面混合污垢的成分及形貌

Fouling Fluidized-removing and Heat Transfer Enhancement Technique on Intake Water and Heat Transfer of Sewage-source Heat Pump System;

污水源热泵系统取水换热过程流化除垢与强化换热方法