排序方式: 共有14条查询结果,搜索用时 281 毫秒
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水泵并联选型及节能运行相关问题探讨 总被引:2,自引:0,他引:2
根据冷热水系统的流量及系统最不利阻力损失的特点,综合管路性能和水泵性能,分析了循环水泵并联特点和选型方法,特别分析并联水泵选型过程中的问题:水泵流量和扬程附加量的合理取值;并联水泵系统部分负荷采用部分水泵运行时,水泵的运行效率和电机超载性.从满足工况要求和节能的角度,按照闭式水系统和开式水系统管路特性的各自特点,分别用计算实例说明不同水泵系统变频节能调速的计算方法、特点以及注意的事项,进一步分析并联水泵变频调速系统的特点及适应性问题. 相似文献
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The evolutions of the electron temperatures of Muminum plasmas produced with 0.351 μm laser are simulated by means of one-dimensional hydrodynamic code. The simulations show that the plasma geometry has strong influence on the electron temperature's evolution while the effect of the flux limiter is not so significant. The simulations are in good agreement with the experiments only at some spatial points. A full comparison between the simulations and experiments indicates that the one-dimensional code is not accurate enough to characterize the laser-produced plasmas. A post-processor code based on the hydro code is developed to generate the streak image of the Thomson scattering spectra, which can be directly compared with the experimental data. 相似文献
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A streaked optical pyrometer (SOP) is developed and calibrated for the measurement of the temperature of shocked materials. In order to achieve a higher relative sensitivity, a onechannel scheme is adopted for the system. The system is calibrated with a shocked step-shaped aluminum sample in the SG-III prototype laser facility. The relation between the count number in the detection system and the sample temperature is thus obtained, which can be adopted to infer the temperature of any shocked materials in future experiments. 相似文献
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辐射驱动冲击波速度诊断是辐射驱动聚变和物质状态方程(EOS)研究的重要诊断技术,无论是用冲击波法测量辐射温度还是研究物质状态方程,都对冲击波速度测量精度有较高要求。论文介绍开展的辐射驱动冲击波速度不确定度分析的理论工作,提高了数据处理的准确性。通过建立自动化数据处理平台,将靶参数、条纹相机精密标定数据库以及冲击波图像的处理有机地结合起来,实现了对冲击波速度以及多个参数量对冲击波测量不确定度影响的快速评估。目前神光系列实验中冲击波速度测量的不确定度在1.5%以内。 相似文献
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科学级光学CCD谱响应与面均匀性标定方法 总被引:2,自引:0,他引:2
科学级光学CCD已成为激光等离子体诊断实验中最主要的图像读取与记录设备.提出了一种标定科学级光学CCD谱响应与面均匀性的实用方法;对PID1100×330型CCD和TEK512×512型CCD的谱响应与面均匀性进行了标定.实验获得了CCD谱响应曲线和面均匀性数据,为精确处理ICF实验数据奠定了实验基础. 相似文献
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