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1)  heat dispersing
分散热量
2)  heat dissipation
散热量
1.
The temperature and its field distribution and the heat dissipation through gearbox case are conditional on each other in computation,thus making the computation much more difficult.
机匣出油口润滑油的温度、机匣内部润滑油温度场的分布和机匣壳体散热量三者互为计算条件,给计算带来困难。
2.
This paper calculates the increment of the heat dissipations of the heat transfer rate when we assume that the convection coefficient is constant and is negligible radiation,and draws the graphs which show the relations between the heat transfer rate and the numbers of the fins,and the relation between heat transfer rate and the length of the fin.
针对对流系数是常数和忽略辐射的情况,分别改变散热肋片的数目以及长度,计算了对外散热量的增加值。
3.
As the theory of the floor radiance heating system is different from the one of convective heat transfer,some proldems exist in cognition leading to the inconsistency of heat dissipation between practice and design of the low temperature floor radiance heating systen.
由于地板辐射采暖与传统的对流换热采暖的机理不同,所以在设计中存在认识上的一些问题,导致了实际应用中低温热水地板辐射采暖系统的散热量与设计热负荷不符。
3)  heat dissipating capacity
散热量
1.
Taking the metal thermal intensity as object function for structural optimization,this paper calculates the heat dissipating capacity of finned radiator of double water of passageway with Matlab.
本文以金属热强度为结构优化的目标函数,利用Matlab对双通水道带翅片的散热器的散热量进行计算,通过对数值结果的分析,得出该种散热器的最佳结构型式。
2.
According to he calculation and economy analyses of heating pipe, this paper suggests that heating system design should consider the pipe heat dissipating capacity to reduce engineering cost.
通过对采暖管道热量的计算和经济分析,建议在采暖系统设计时考虑管道的散热量,以降低工程造价。
4)  heat release
散热量
1.
Safety factor of heat release for covered floors in floor radiant heating systems of residential buildings;
住宅地面辐射供暖系统中因地板覆盖产生的散热量安全系数
2.
Based on the experimental study on the equal spacing and two-pass style system with PP-B pipes, obtains the curves reflecting the relation between the heat release, water flow rate and water supply temperature, and finds that the larger water flow rate is, the less variation of heat release with mean water flow velocity in the pipes is.
基于对采用PP B管材、等密度双回型铺设方式的低温地板辐射供暖系统的实验研究 ,得到该系统散热量与流量及供水温度关系的热工特性曲线 ,发现随着流量的增加 ,散热量对管路内平均流速的变化率呈减小趋势。
3.
Presents calculation of heat release in the main building and design of the ventilation system, analyses the advantages and disadvantages of the ventilation system based on the field measurement data in summer including temperature of air outside the main building enclosure and that of the workplace.
介绍了火电厂主厂房散热量的计算及通风系统形式,现场测试了夏季主厂房围护结构外空气温度及工作地点温度,并分析了这种通风形式的优缺点。
5)  heat emission
散热量
1.
Effects of decorative covers on heat emission of radiators;
装饰罩对散热器散热量影响的初步研究
2.
Effects of radiator wall spacing on the heat emission;
散热器背面与墙距离对散热量的影响
3.
To the question of sunlight greenhouse,which is surrounded by three walls and a incident surface,calculated the sunlight greenhouse s heat emission when the incident surface is covered by different materials during the night.
计算了采用不同保温材料日光温室夜间的逐时散热量,并进行了经济性和适用性分析。
6)  heating capacity
散热量
1.
Tests the heat transfer performance of the finned tube in the test bed, obtains the heating capacity, heating capacity per unit weight and mental thermal intensity of three different finned tubes including opening, flat-faced closed and curved-faced closed finned tubes with the same structural parameters.
利用搭建的试验台对竖直放置的纵向肋片管的传热特性进行试验,获得了相同结构参数下肋片形式分别是开放式、平端面封闭式和弧形端面封闭式下的散热量,单位质量散热量和金属热强度。
2.
Analyses the variation of the heating capacity under three conditions) based on the experimental data of radiators made of aluminum alloy or compound of copper and aluminum.
基于铜铝复合、铝合金散热器性能实测数据,分析了三种情况下散热器散热量的变化。
补充资料:分散和分散体系


分散和分散体系
DisPersion and DisPerse Systems

  方式:(l)质点在其它质点的表面上滚动;(2)质点被吹离表面,又回落到表面上,以“跳跃”的方式运动;(3)质凝以气溶胶的状态运动。大质点一般只能滚动,而很细的质点则可能以气溶胶的形式流动。粉末的可倾倒性也是其流动性的一种表现。在倾倒时有的粉末发生“扬尘”现象,而同样分散度的另一些粉末则不发生,这是由于不同粉末的质点间的粘附力不同。粉末中水分含量的增加能有效地减小“扬尘”现象。因此,不能被水润湿的僧水性质点(例如滑石粉)比亲水性质点(如石英、石灰石等)的“扬尘”严重。质地软的塑性材料的粉末比坚硬材料的粉末“扬尘”要少,单分散的粉末因为质点之间接触点数较少,因此比多分散的粉末更易发生“扬尘”现象。 与粉末流动有关的另一现象是粉末的喷雾和流态化。自喷嘴向燃烧炉中喷入煤粉,喷雾施用杀虫粉剂,在流化床中进行化学反应等重要的生产操作都涉及粉末的喷雾与流态化。在流化床中,当气流自下而上地通过容器底部的粉末层时,若气流速度较低,则粉末质点静止不动,气流从质点间的空隙中通过,粉末层厚度保持不变。当气流速度增大,通过颗粒空隙时的实际流速U,稍大于颗粒的自由沉降速度UZ时,颗粒开始浮动,粉末层膨胀,空隙率增加。空隙率的增加又使气体的实际流速有所下降。当粉末层的空隙率增加到某一定值时,百1-‘2,颗粒即悬浮在气流之中,形成流化床。流化床中有很多运动着的空穴〔俗称气泡),由于气泡的上升、合并、破裂,使粉末粒子在床层中剧烈运动,床层上界面也波动不定,似沸腾的液体,所以又称沸腾床。当气流的流速继续增大时,流化床的上界面消失,粒子分散于气流中并被气流带走,此即粉末的气动输送。 粉末的另一重要性质是对表面的粘附性,粉状杀虫剂即是利用粉末质点对植物表面的粘附。粘附性随质点尺寸的减小而增加,同时还与质点的形状和本性、粘附面的表面性质以及粘附面的塑性等因素有关。接触面的塑性形变会增大接触面积,因此,质地软的质点的粘附性较强。影响粉末粘附的另一因素是粉末的湿度。在粉末质点与粘附表面的接触处形成了水的弯月面,由于表面张力的作用,弯月面将质点拉向粘附表面。水分含量的增加会使粉末质点的粘附性提高。越高,所以自过饱和蒸气形成气溶胶时,过饱和度必须很高,或是有凝聚核心存在。 工业上制备气溶胶时更常采用的是分散法,例如,农药喷雾、喷漆、喷洒香水以及药物的气溶胶制剂等。商品气溶胶制剂由三部分组成:①欲分散的产品;②喷射剂;③压力容器、阀及其它附件。欲分散的产品在容器内可以是溶液、乳状液或粉末。喷射剂可以采用液化的或压缩的气体。
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