传热

The effects of fin pitch and inlet relative humidity on airside heat and mass transfer performance were investigated.

对7个带亲水层开缝型翅片管换热器在析湿工况下空气侧传热传质特性进行了实验研究，分析了翅片间距和入口相对湿度对空气侧传热传质特性的影响。

The results indicate that the drag reduction and heat transfer reduction of drag-reducing fluid increase with increasing flow velocity and approach the asymptotes, and HTR is greater than DR all the time.

结果表明，减阻流体的减阻率和传热降低率随流速的增大逐渐增大到渐进值，而且传热降低率恒大于减阻率。

The methods of heat transfer enhancement for the evaporative condensers were theoretically analyzed.

本文从理论上简要分析了蒸发式冷凝器强化传热的方法，建立了蒸发式冷凝器传热性能和可视化测试实验平台。

Based on the study of the development of the research on ultrasonic anti-fouling and descaling technology for heat transfer enhancement, we can get that ultrasonic anti-fouling and descaling method is not only energy saving but also environment protecting.

在对国内外超声波抗垢强化传热技术的研究进行简要描述与总结的基础上，本文认为超声波抗垢强化传热是一种先进的节能环保技术，具有非常广阔的应用前景，并指出了存在的问题与研究方向。

Before conducting the study, students believed that Heat could not influence gas and liquid volume.Matter didn't have thermal expansion. Metal ring's diameter will shrink after heating. The melting quantity of salt is much quicker and faster than sugar in the same temperature or water. Only metals can conduct heat, but not wood, glass, plastics. The quantity of heat is by steam way disappearing.

一、学童对「物质与热」的迷思概念有：(1)「热对气体、液体体积不会有影响」的概念，(2)听过热胀冷缩的语词，但是对原因不明了，(3)金属双圆环加热后，内环孔的口径会变小，(4)同温度且等量水，盐的溶解量比糖多、也比糖快；(5)木材、塑胶、玻璃不会传热，金属才会传热；(6)以为热量是以水蒸气方式散失，(7)冷气机应安装在高处，冷房效果较佳；(8)误认为金属是良好的保温材质。

In the case of film condensation, the total heat transfer coefficient of B30 circularly-grooved tube can increase 44%~ 95% compared with smooth tube; for TA2 circularly-grooved tube, it is 51%~64%. And the relevant flow friction inside the tube obviously increases.

在膜状凝结条件下，B30波槽管的总传热系数比光管的提高44％～95％；TA2波槽管的总传热系数比光管的提高51％～64％；而相应的管内冷却水流动阻力也有明显的增加。

The heat transfer in vertical tube falling film evaporator equipped with spring inserts is investigated the first time. All kinds of influence factors are analyzed after a larger number of experiments.

本文首次对安装有弹簧插入物的竖管降膜蒸发的传热性能进行了实验研究，并与光管的传热性能进行了比较。

Based on heat transfer data in experimental equipment of out flow plate type falling film evaporator ,an artificial neural network model for temperature distribution on heating element plate is developed.

根据外流板式降膜蒸发器实验装置的传热实验数据，建立了传热元件板片温度分布的人工神经网络模型。

Synthesized all above, the heat and mass transfer of charge bed is discussed in detail. After choosing seriously the former study results in this field, a whole temperature range process model for firing iron ore pellets containing solid fuel is established as well as its software is edited. The main physical chemistry reaction process within pellets and the heat statement can be calculated exactly with the process as long as the physical and chemical parameters of raw material are obtained through basic experiments. After finding out the reason of"temperature hysteresis"and"heat inertia"of the experimental induration device, a new kind of experimental induration device is designed. The"temperature hysteresis"of hot gas flow in the new device is avoided.

综合以上对焙烧球团矿时球团矿内各种物理化学反应过程的分析与研究的结果，仔细地分析研究了球团矿料层中的传热质现象，认真筛选了前人对填充床的传热传质的研究结果，提出了全温度范围球团矿焙烧过程模型，并编制了相应的计算机软件，只要通过基础实验，获得原燃料的基本物性参数（如化学反应速度常数，矿粉、煤粉的粒度及此表面积以及球团矿的导热性等），利用这一软件就能准确地计算出焙烧球团矿时球团矿内各种物理化学反应过程和料层内的热工状态。

The heat receiver cavity radiation mathematical model and the gas tube heat model were established.

建立了太阳能热动力发电系统吸热器腔体辐射模型，结合换热管的传热模型计算了吸热器的传热过程。

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。