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The heating media is steam, hot water or conduct oil. The heating media is fed from one side of the drying tray and come out from the other side. The dried materials drop down to the bottom layer from the last drying layer and then it will be conveyed to the discharging gate by the harrow.

中空的干燥盘内通入加热介质,加热介质形式有饱和蒸气、热水和导热油,加热介质由干燥盘的一端进入,从另一端导出,已干物料从最后一层干燥盘落到壳体的底层,最后被耙叶移送到出料口排出。

In the paper, we investigate, respectively, the unsteady transport properties of heat and moisture in enclosure under constant wall heat flux and constant wall temperature when porous particles are small and Darcy number is lower, the effect of conductivity ratio, heating conditions and other parameters on the heat transfer rate of enclosure when particles are larger and Darcy number are higher.

并分别对多孔颗粒较小时的低Da数封闭腔内的非饱和渗流与传热,及颗粒较大的高Da数封闭腔内的非饱和自然对流行为进行了数值模拟,研究了低Da数时湿分与热量在恒热流与恒壁温条件下的非稳态传递特性,高Da数时封闭腔的传热与流动特性、达西效应以及导热比、加热条件等对空腔传热系数的影响。

The reactor afterheat under conditions of depressuriza-tion and loss of main heat sink would be removed away through mechanism ofpassive heat transfer by conduction, radiation and natural convection.

失冷和失压工况下,由导热、辐射和自然对流等被动传热机制能将剩余发热安全地传出反应堆。

The area of steel ring of the assembly sample was enlarged thus to keep the temperature field even and to protect the anvils from excessive heating. The pause pressure was chosen to be 90% that of synthesizing pressure; the pause duration to be 500~600 s. Our newly developed linear no-power depressurization technique was used for uniform depressurization. The synthesizing duration was selected to be 40~50 min, and the stop-heating time was delayed by 20 s.

在组装方面,增加了导电钢圈的导电和导热面,以均衡温度场并防止顶锤表面过热;采用合成压力的90%作为暂停压力;暂停时间选为500~600s;采用最新实验成功的线型无动力卸压方式匀速卸压;合成时间取40~50min;延缓停热时间20s。

This paper introduces experiments on the influence of the cement type, sand type, sand size, and bentonite content on the thermal conductivity of the borehole backfills, and aslo the influence of the bentonite content on the backfill consistency.

实验研究了水泥型号、骨料类型、骨料粒径、膨润土含量对回填材料导热系数的影响,以及膨润土含量对回填材料稠度的影响。

The probability that operation succeeds increases. So we design the liquid carbon dioxide cryoprobe with the vacuum structure.

研制出负压式、导热式和直喷式等三种结构,并搭建了冷冻刀系统实验装置。

Therefore liquid CO_2 avoids gas-solid multiphase flow, and supplies continuous low temperature gas for cryoprobe. Experimental results show that the 2-dimension temperature distribution for the first time, it includes:(1) The cooling velocity and freezing zone increases along the flux up at certain size of the cryoprobe in the same biological tissue.(2) As the diameter of cryoprobe increases, the temperature will descend faster, freezing zone will be broader obviously, and ice ball become larger. Until it arrives heat balance, the temperature keeps invariability.(3) Single freezing-thaw results in biggish mechanical injury already for loosen tissue such as pork liver; Successive freeze-thaw circle could quicken freezing and thaw velocity for compact tissue, and it has proved the more mechanical injury of successive freeze-thaw circle than the single freezing-thaw treatment.

文中首次对生物组织进行了二维温度场分布实验研究,得出:(1)当刀头大小一定,对同一组织冷冻时,流量越大,降温速度越快,降温影响区域越大;(2)随着冷刀直径的增加,降温速度随着增加;温度影响区域明显增大;冰球直径也随着增大,热量平衡后温度几乎不随时间变化;(3)对于结构疏松组织比如猪肺脏,单次冻融对组织已造成较大的机械破损;对于结构较致密组织,多次反复冻融可以使降温和复温速率增加,单次冻融的热应力造成的机械破损较小,多次冻融后造成的机械破损比单次冻融所造成的机械破损大;(4)直喷式刀头比导热式节能约15%。

The total static loads and dynamic loads are summed as 4.692W and 38.4W, respectively. And comparison between the double-wall cooling method and the cooling tube method for the 77 heat shield has been discussed to provide the thermal parameters for flow process simulation. The critical thermal parameters of the main components of the QWR cooling system were determined for parallel arranged QWR cryostats. The mass flow and time for cool-down of the QWR to 4.2K was also estimated.

本文在详细描述恒温柜冷却系统的基础上,详细计算了4.2K冷质量与77K冷屏的辐射漏热,同时,还对恒温柜内部支撑系统计算了变物性下的导热漏热,得出了恒温柜系统的静态和动态热负荷分别为4.692W和38.4W,并分析比较了液氮冷屏采用夹层冷却方式与铜管缠绕冷却方式的优缺点,为流程模拟的参数确定提供了依据。

The ceramic-metal cladding material on the steel substrate is a new type of cladding material which has great development potential because of having functional dominances of both high hardness,excellent wear resistance of ceramics and high strength,toughness,good thermal conductivity of me...

制备出的金属陶瓷-钢覆层材料同时具有陶瓷材料硬度高、耐磨、耐腐蚀和金属钢强度高、韧性好、导热性好的性能优势,是一种很有发展潜力的高硬复合材料

Correlations between the content of dopant and properties and microstructure of ZrB2/C composites were also discussed.

材料的微观结构强烈地影响着材料的力学、导电、导热等宏观性能。

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