紫外线和臭氧在屏障设施消毒中的应用及职业防护

紫外线消毒灯和臭氧空气消毒机在屏障设施物体表面消毒、水的消毒、空气消毒除臭等方面有一定的应用。本文阐述了紫外线消毒和臭氧消毒、除臭的原理,分析了影响消毒效果的众多因素并提出相应对策,重视"紫外线辐射强度"监测,加强职业防护,并提出在屏障设施如何正确使用紫外线灯值得商榷。

驱动波形对氯化氪准分子灯222nm辐射效率的影响

提出了一种测量KrCl*准分子灯222 nm辐射效率的辐射度学方法。KrCl*准分子灯为同轴结构,内管和外管的内,外径分别为14,16和37,40 mm。灯中充有总气压为2×104Pa的氯气(Cl2)和氪气(Kr),其中含0.5%的氯气。KrCl*准分子灯用正弦和脉冲电源来驱动。用紫外功率计测量222 nm辐照度,辐射功率由Keitz公式计算。灯的电功率则通过高压探头和电流互感器结合示波器测量得出。结果表明,KrCl*准分子灯在脉冲电源驱动下的最佳效率(11.4%)是正弦电源的2倍。

Hybrid and Reflective Insulation Assemblies for Buildings

Materials with a low thermal emittance surface have been used for many years to create reflective insulations that reduce the rate of heat flow across building envelopes. Reflective insulation technology is now being combined with other energy conserving technologies to optimize overall thermal performance. The basis for the performance of reflective insulations and radiant barriers will be discussed along with the combination of these materials with cellular plastic or mineral fiber insulations to form hybrid insulation assemblies. Calculations of thermal resistance for enclosed reflective air spaces and current field data from Southeast Asia will be presented. These data show that reductions in heat transfer across the building enclosure can be effectively reduced by the use of enclosed reflective air spaces and attic radiant barriers. Reflective technology increases the overall thermal resistance of the building enclosure when used to insulate poured concrete structures.

拉法基屋面施工技术

为解决传统坡屋面易渗漏、不耐久、易污染、保温性能差等问题,提出拉法基坡屋面系统所采用的防水、保温、隔辐射热、通风等较先进的施工工艺,使坡屋面工程在外观、使用年限以及节能减排等各方面效果均有显著提升.

XeCl与XeBr准分子紫外光源的最新进展

介绍了基于介质阻挡放电的准分子紫外辐射光源的特性,以及准分子紫外光源的优点;分析了国内外有关Xe Cl与Xe Br准分子紫外光源的最新研究进展,总结了Xe Cl与Xe Br准分子紫外光源辐射特性的研究方法,了解了气压、气体的组成、温度以及电源的频率和电压对辐射功率和辐射效率的影响,为优化XeCl与XeBr准分子紫外灯奠定了基础。