查询词典 cooling water

Q235 and 20MnSi billets are tested to produce BS 460MPa grade reinforced bar with postrolling residual heat treatment process. Influences of water-cooling stage, water pressure, the temperature at the entrance of cooling bed, compositions, steel grade and ageing on reinforced bar properties are studied.

以Q235、20MnSi钢坯为原料进行了用余热处理工艺生产英标460MPa级钢筋的试验，研究了水冷段数、水压、上冷床温度以及成分、钢种和时效对钢筋性能的影响。

The results show that BS 460MPa grade reinforced bar can be produced all from Q235 or 20MnSi billet by the remained heat treatment process but the production cost of the former is lower. When the water pressure minishes, the intensities of reinforced bar reduce; the higher the temperature at the entrance of cooling bed is, the lower the intensities are. Therefore, the commendatory process parameters are that five stages coolers should be opened, water pressure should be all 1.8～2.0MPa and the temperature at the entrance of cooling bed of Q235 reinforced bar should lower than 650℃. The typical microstructure(Q235): the surface layer is tempered sorbite; the transition layer is pearlite and ferrite, and the partial ferrite is acicular; the core is pearlite and ferrite and the grain fineness is 8～10 grade. The yield strength is reduced by 10～20MPa after natural ageing and it can be simulated by artificial ageing(100℃×2h or 200℃×1h).

结果表明，Q235和20MnSi钢都可以利用余热处理工艺生产出性能合格的钢筋，但前者的生产成本较低；水压减小，钢筋强度降低，上冷床温度越高，强度越低，推荐5段水冷器全开，水压均为1.8～2.0MPa，Q235钢筋的上冷床温度应控制在650℃以下；钢筋典型的金相组织（Q235）表层为回火索氏体，过渡层为珠光体+铁素体且部分铁素体呈针状，心部为珠光体+铁素体，晶粒度8～10级；自然时效后屈服强度下降10～20MPa，用人工时效可以模拟自然时效，工艺是100℃×2h或200℃×1h。

The effects of casting temperature, casting speed and intensity of cooling water on microstructure are investigated. The results show that when the casting temperature, casting speed and intensity of cooling water are 710 ℃, 100 mm/min, 0.05 m 3/min respectively, the micros...

结果表明，铸造温度为710℃，铸造速度为100mm/min，冷却水强度为0.05m3/min时的低频半连续铸锭组织均匀细小，呈现近球形，边部和中间部位的晶粒大小差别较小，其平均晶粒尺寸分别为28μm和29μm。

On the instrument cabinet, there is power switch, start switch, stop pushbutton, main engine exhaust thermometer, lub oil pressure gauge, lub oil thermometer, cooling water thermometer, main engine revolution indicator, starting battery voltmeter, cooling water high temperature and lub oil low pressure alarm device; beside the gear box, there is working oil pressure gauge, lub oil thermometer, lub oil low pressure alarm , working oil low pressure alarm and lub oil high temperature alarm.

本船主机有机带控制报警仪表箱，仪表箱上设有电源开关、启动开关、停车按钮、主机排气温度表、滑油压力表、滑油温度表、冷却水温表、主机转速表、启动蓄电池电压表、冷却水高温及滑油低压报警装置；齿轮箱机旁配工作油压力表、滑油温度表、滑油低压报警、工作油低压报警及滑油高温报警。

Center air-condition system is normally composed of refrigeration, freezing water system, cooling water system, cooling tower, terminal facility and fresh wind engine.

中央空调系统通常由制冷主机、冷冻水系统、冷却水系统以及冷却塔、末端设备、新风补充风机等组成。

Proposes a method for selecting optimal chiller unit configuration in design phase, in which the energy consumption of chillers is simplified to the function of actual cooling capacity and entering water temperature of the condenser, then the all-year building load frequency distribution under different outdoor wet-bulb temperature that determines the minimum entering cooling water temperature is obtained by dynamic load calculation, and finally, calculates the all-year energy consumption and energy consump...

提出一种在设计阶段对冷水机组方案进行优化配置的方法。首先，冷水机组的能耗计算简化为制冷机的实际制冷量和冷却水进口温度两个独立变量的函数。进一步，通过建筑动态负荷计算获得全年冷负荷频率特性以及相应的室外湿球温度分布，其中湿球温度决定了冷却水最低进口温度。最终，计算出各种冷水机组配置方案的全年以及不同冷负荷需求工况下的运行电耗，并得出最优化的节能方案。

In the operation, many factors have influences on vacuum degree of condenser, among which the main factors are: inlet temperature of cooling water, flow rate of cooling water, tube bundle surface cleanness of condenser and vacuum system tightness, etc.

在运行中，影响凝汽器真空度的因数很多，其中主要有：冷却水进水温度、冷却水的流量、凝汽器管束表面的清洁状况，以及真空系统的严密性等。

Due to the cooling-water tube diameter of the generator is too small, the velocity of cooling-water is also too low, if we only use the travelling period difference of one emmission and reception, the propagation time will be too small to test. Then, we select ultrasonic circulation method as our concrete plan.

由于发电机冷却水引水管的管径小，冷却水的水流速度低，利用单次发射和接收的时间差检测时，传播时间差极其微小，故作者首次提出利用声循环法来检测大型汽轮发电机定子线棒冷却水流速。

H.T.fresh cooling system is filled cooling water of soften additive expansion chamber arrives at water level of being specified.

2.3 高温淡水冷却系统已注入软化添加剂的冷却水，膨胀水箱达到规定的水位高度。

The result shows, grass of Sikkim small hole is temporary decline Yan period with permanent decline water content of Yan period soil is respectively 7.06% be in temporary decline with 6.20%; the Sikkim of Yan period is small after water of Kong Cao answer bibulous and rapid, decline Yan condition is eliminated gradually, appearance of aftertreatment group of answer water 6 H and contrast active of basic consistent;SOD is during threatening processing with markedder than notting have to taking a picture change, the ascendant;CAT that there is certain range after answer water and POD active are in threatening during after rising first, drop, all remarkable prep above contrasts level, and the active;MDA content that still keeps taller after answer water as the extension of time of arid and threatening processing mushroom, to threatening the 8th climate reachs maximum, content of the MDA in the lamina after answer water drops quickly, arrive the 5th day after answer water, content of the MDA in threatening group lamina is adjacent already contrast level.

结果显示，锡金微孔草暂时萎焉期和永久萎焉期土壤含水量分别为7.06%和6.20%；处于暂时萎焉期的锡金微孔草复水后吸水迅速，萎焉状态逐渐消除，复水6 h后处理组外貌和对照基本一致；SOD活性在胁迫处理期间和对照相比无显著变化，复水后有一定幅度的上升；CAT和POD活性在胁迫期间先上升后下降，均显著高于对照水平，且复水后仍然保持较高的活性；MDA含量随着干旱胁迫处理时间的延长而迅速增加，到胁迫第8天时达到最大值，复水后叶片中MDA含量迅速下降，到复水后第5天，胁迫组叶片中MDA含量已接近对照水平。

But this is impossible, as long as it is engaging in a market economy, there are risks in any operation.

但是，这是不可能的，只要是搞市场经济，是有风险的任何行动。

We're on the same wavelength.

我们是同道中人。