查询词典 temperature difference

The mathematical model of complex countercurrent multi-effect evaporation with condensed water flash is established, which aims at minimum annual cost (including cost of fresh vapor, vacuum pump power, evaporator, maintenance and depreciation).Based on such decisive variables as the pressure of fresh vapor, the pressure of condenser and heat-transfer mean temperature difference of vari-effect,the model is solved by the complex method,Lagrangian multiplier method, iteration method and matrix method.The practical example indicates that the influence of the pressure of fresh vapor, the pressure of condenser and flash of condensed water on the optimum design results is notable.

建立了带有冷凝水闪蒸的复杂逆流多效蒸发系统优化设计的数学模型，该模型以整个蒸发系统的年总费用(包括加热蒸汽年费用、真空泵年动力费用以及蒸发器和辅助设备的年折旧维修费用等)最小为优化目标，以生蒸汽压力、冷凝器真空度及各效有效传热温度差为决策变量，提出一种新算法———复合形法结合Lagrangian乘子法、迭代法和矩阵法求解模型。

Both inter-phase velocity slip and temperature difference were taken into account in the two-fluid model, but not in the homogeneous model.

建立了跨临界CO2在短管内流动的两流体模型和均相流模型。

The input of the temperature difference and change control the state of steam valve and cold water valve.

控制蒸汽阀和冷水阀的通断。

Gradation segregation may even be reflected by infrared pictures.Infrared pictures also shown that temperature difference is controlled even behind full-width spreader as transfer car is used.

红外热像反映出使用转运车后，即使是全幅摊铺机温度离析也控制得较好，可见转运车减小温度离析的效果超过了摊铺宽度过大的影响。

The greater the temperature difference between the hot and cold sources, the greater the thermal efficiency.

更大的温度差异的热点和冷源，更大的热效率。

First of all, the factors which influence the thermal barrier effect and the relationship between the factors and heat resistance were analyzed. Then, the paper gave the mathematical model of the effect of thermal conductivity, coating thickness, environment temperature difference, and heat exchange coefficient on thermal barrier effect.

研究主要内容如下：本文首先分析了隔热效果的几种影响因素以及它们与隔热效果之间的关系，推导出了包含热障涂层厚度、导热系数、环境温差和对流系数等在内的影响因素与隔热效果之间的数学模型。

The measured total flux of oil-water and temperature difference between upstream and downstream of the heater were employed as inputs, and the oil holdup was used as output of LSSVM, the relation between input and output was trained and the ideal model of oil holdups was obtained by applying a modified PSO to determine the optimal parameters of LSSVM automatically.

该方法将测量的油水总流量和加热器上下游温差作为LSSVM输入，含油率作为输出，对含油率与温差和总流量的关系进行训练，通过改进的PSO优化LSSVM的参数，建立了含油率的优化模型，并用测试数据对含油率的模型进行了比较。

The correct coefficient of temperature difference can be taken as one, when this method is used to calculate the heat transfer coefficients of shield section.

结果表明，CRK法的计算误差小于传统计算方法，在进行遮蔽段传热计算时，错流温差校正系数可近似按l处理。

For cable-stayed bridge by cantilever and segment construction, as a result of the effects of temperature difference, concrete shrinkage and creep during construction course, stress condition of structure is very complex.

对于悬臂分段现浇施工的斜拉桥，因其施工过程中受温度、混凝土收缩徐变的影响，结构受力复杂，为了保证桥梁在施工过程中的结构受力安全及成桥的线形与内力符合设计要求，必须对桥梁施工过程进行严格的控制。

Finite time thermodynamic analysis has been carried out for temperature difference between working medium and heat source in Carnot refrigeration cycle.

对卡诺制冷循环中工质与热源间温差进行有限时间热力学分析，从理论上证明了在额定制冷率下，无论以最大制冷系数还是最小熵产生率为目标，均可求出解析结果，且两者的结论是相同的。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。