Experimental and theoretical study on thermal and moisture characteristics of new-type bamboo structure wall

Thermal and moisture characteristics of the bamboo structure wall were tested in natural climate and three representative variation processes of heat and moisture: heating from solar radiation in summer at normal temperature and humidity, heating from solar radiation in summer at normal temperature and high humidity after rain, humidifying from brash in summer at high temperature and normal humidity. The results show that, in summer, the largest temperature difference between external and internal surface of the 28 mm-thick bamboo plywood wall is 11.73 °C (at 15:40) and the largest strain difference is 136 μm/m (at 18:50), both in ambient and indoor conditioned environment. In heating process, lengthways of the wall surface are in contracting strain while transverse ways are in expanding strain at initial stage and in contracting strain during later period. When the high temperature wall is humidified by rain, the surface temperature drops, moisture content increases and the expanding strain is presented on the surface during the whole process. Temperature and moisture content are two important factors which affect thermal and moisture stress (TMS) of the bamboo structure wall. The TMS is not only related to temperature and moisture content, but also greatly affected by temperature gradient, moisture content gradient and rates of changing.     

电风扇不宜久吹：睡眠应用睡眠风

用电风扇时，有些人喜欢离得很近，把风速调到最高挡，长时间吹风，特别是夜间睡觉时整夜吹或在剧烈活动后，靠近风扇猛吹，都会引起身体不适，感到闷热、疲倦、全身无力、手脚酸软，严重时会引起头痛、发烧、发冷等现象，甚至还可能引发其它疾病。夏季人体主要是通过皮肤排汗、散热，调节体温，汗液蒸发出来，人就感到凉快了，但是在风扇旁长时间吹风，会使皮肤表面温度很快下降，促使毛孔闭塞，体内热量散发不出来，使人感到闷热。     

A286高温合金的显微组织变化和蠕变特性

在冷床炉熔炼过程中材料的顶部表面温度之所以重要是因为它会影响夹杂物的溶解、元素的蒸发和成品锭的组织及其均匀性。高温测定术可能是仅有的一种非接触式温度测量技术，但对冷床炉熔炼（等离子和电子束两种热源）却显现出其特有的困难。其中包括由观察孔有限的传输及来自等离子彬电子柬的外部光线造成的影响。另外，通常所处理的材料低的和变化的辐射率也造成了进一步的问题。     

攀钢镀锌线退火炉辐射管应用特点及其性能分析

介绍了攀钢连续热镀锌机组中退火炉辐射管的应用特点，并对U型辐射管和W型辐射管的热效率、表面温度分布及使用寿命等技术性能进行了深入的分析。     

含磷蠕墨铸铁干摩擦表面的温度特性

本文在自制的销／盘式干摩擦磨损试验机上，采用热电偶测量了不同工况条件下，不同成分及组织含磷蠕墨铸铁／钢摩擦副中蠕墨铸铁的温度场，系统地研究了含磷蠕墨铸的干摩擦表面温度的特性及影响因素。     

回转窑表面温度红外检测法综述

介绍国内外目前用红外光学测量方法对水泥回转窑简体表面温度进行非接触检测的各种方法和存在的问题，并讨论影响红外光学测量的主要干扰因素．     

Temperature of the Limiter Surface Measured by IR Camera in HT-7 Tokamak

Temperature measurement by IR （infrared） camera was performed oll HT-T tokamak. particularly during long pulse discharges, during which the temperature of the hot spots on the belt limiter exceeded 1000℃. The heat load on the surface of the movable limiter could be obtained through ANSYS with the temperature measured by IR-camera. This work could be important for the temperature measurement and heat load study on the first wall of EAST device.     

大型电机转子表面温度的网络系统测量

针对大型电机转子表面温度的非接触光纤测温方法和网络化传感器的基本特点,研究了大型电机转子表面温度的网络系统测量;提出了采用CAN总线作为TII接口协议完成STIM和NCAP的长距离连接方法,实现了大型电机转子表面温度的远程在线监测与控制,其测量精度达到0.2%。     

基于温度场的单芯电缆载流量研究

导体温度是电力电缆载流量幅值变化的最直接特征量,电缆表面温度和线芯温度是反应电缆运行情况的重要参量。在简化内热源的基础上,建立单芯交联聚乙烯电力电缆的传热模型;通过研究稳态时电缆温度场分布,分析温度参量之间的关系和影响载流量的因素;基于这个传热模型,优化影响因素,对提高电缆安全运行的可靠性和载流量最优化配置有重要的指导意义。