室内有凸出热源和加热器的封闭空腔内自然对流换热

以采暖房间为背景，建立了一侧竖壁有一个加热器，下壁面有一个凸出热源的二维封闭空腔内自然对流换热的数学模型，并对不同的加热器温度和热源强度分别进行了数值模拟。根据计算结果讨论了加热器温度和内热源强度对空腔内温度场和流场分布的影响。     

电接点压力表触头烧蚀的原因及改进措施

文章分析了电接点压力表触头烧蚀的原因,提出了无触点式压力表的改进方法.     

真空镀膜加热器及镀层材料的选择

本文对在真空镀膜实验中多种材料的加热器和镀层间的配合进行了实验研究，探讨了钨、钼加热器镀铝脆裂的原因，结果发现钼加热器镀铜可获最高成功率．     

水资源节约器

水资源节约器的工作原理是：依次通过雨水接收器、过滤器、加热器，把收集到的雨水过滤、加热，最后用于我们日常的生活。这样一来我们就能节约更多的水资源了。     

外加纵向磁场对TIG电弧的影响

试验研究表明外加纵向磁场对电弧的电流密度、等离子流力有很大影响。本文对其变化规律及原因进行了分析和研究。     

推进式加热炉的改造

本文分析了原推进式加热炉存在的缺陷,并且找到了解决问题的方法.     

Studying creation of bulk elementary excitation by heaters in superfluid helium-Ⅱ at low temperatures

In this paper, the obtained experimental results concerning creation of bulk elementary excitations （BEEs） in isotopically pure liquid ^4He at low temperatures -60 mK are discussed. Positive rotons＇ （R^＋-rotons） creation by a pulsed heater was studied. Signals were recorded for the following quantum processes： quantum evaporation of ^4He-atoms from the free liquid-helium surface by the BEEs of the liquid helium-Ⅱ, and BEEs reflection from the free surface back into the bulk liquid. Typical signals are shown, and ratios of signal amplitudes are evaluated. For long heater pulses from 5 to 10 μs, appearance of the second atomic cloud consisting of evaporated ^4He-atoms was observed in addition to the first atomic cloud. It is thought that the first atomic cloud of the evaporated helium atoms consists of very fast ^4He-atoms with energies ～35 K evaporated by positive rotons with the special energies ～17 K （～2ER～2×8.6 K with ER representing the roton minimum energy） corresponding to the third non-dispersive Zakharenko wave. The second cloud of slower ^4He-atoms was created by surface elementary excitations （SEEs or ripplons） possessing the special energies ～7.15 K representing the binding energy. It was assumed that such SEEs can be created by phonons incoming to the liquid surface with special energies ～6.2 K corresponding to the first non-dispersive Zakharenko wave which can interact at the liquid surface with the same phonons already reflected from the surface for long heater pulses. Also, some pulsed-heater characteristics were studied in order to better understand the features of such heaters in low temperature experiments.     

真空阴极弧离子镀电弧特性及其电源选择

研究了高纯氩气、高纯氩和高纯氢的混合气及高纯氩和乙炔的混合气等气体，对铜、钛及石墨等靶材电弧特性的影响．低熔点、导电性能好的铜及钛靶电弧燃烧时，电弧电压低，电压的波动小，电弧可以在很小的电流下工作；而石墨电弧弧压较高，电压的波动很大．石墨电弧在氩气中比它在冷却性强的Ａｒ＋Ｈ２及Ａｒ＋Ｃ２Ｈ２中稳定得多．当Ｃ２Ｈ２的含量大于８４％时，我们所采用的主电源已经不能维持正常的放电过程．另根据真空阴极弧弧光放电电弧静特性与其工作电源特性曲线的关系，分析了铜靶、钛靶及石墨靶所需电源外特性曲线的形状，针对石墨电弧的不稳定性，从理论上提出了应用范围广泛的真空阴极弧离子镀电源的特性具有较高的空载电压，具有陡降的外特性曲线