增压膨胀和全精馏无氢制氩技术在1000m~3/h空分设备上的应用

介绍采用增压膨胀和全精馏无氢制氩技术的1000m3/h空分设备的流程设计和技术指标,简述了安装调试中遇到的问题以及解决方法。     

HYSYS过程模拟软件在空分设备操作中的应用

描述了HYSYS过程模拟软件在空分设备操作中的应用,并介绍了软件应用过程中的体会。     

KDON-4000/3000型空分设备的技术改造

介绍了KDON-4000/3000型空分设备主塔及前序设备、液氩汽化及氮气供应系统以及制氩系统存在的待改造的方面,改造方案和改造效果。     

Pilot Study for the Performance of a New Demand Control Ventilation System in Hong Kong

There are different ventilation control methods for outdoor air quantity in air-conditioned spaces to reduce the energy consumed in cooling the outdoor air. Demand controlled ventilation (DCV) is an important strategy to control the outdoor air quantity. However, the current practice in DCV systems creates several problems for air-conditioned office buildings. Although metabolic carbon dioxide (CO2) concentration is mainly used as a surrogate indicator for ventilation adequacy, the conventional DCV system does not seriously consider the placement location of the CO2 sensor, and it does not take into account the adverse effects of the consequential increase in pollutant concentrations in the indoor space when the fresh airflow rate is reduced. In this study, a long period of subjective and objective measurements were conducted in an occupied office to examine its suitability for conversion to a new demand controlled ventilation system (nDCV). After the feasibility investigation, an nDCV system was developed to optimize the energy consumed for outdoor air ventilation while providing the desirable thermal comfort and indoor air quality. The true optimization of this nDCV is achieved by a new concept of the optimized indoor air quality window which determines the most representative locations for the indicator sensors. A minimum ventilation rate is determined by a calibration procedure for the pollutant inventory of a building, taking into account the infiltration characteristics. Radon gas, which is a notorious carcinogenic indoor pollutant, is used as a reference to determine the minimum fresh airflow rate. The findings show that this nDCV system reduced 16% of fresh air cooling energy consumption without jeopardizing the thermal comfort and indoor air quality.     

高炉煤气余压透平与电动鼓风机组同轴驱动的设计与投运

介绍了国内第一台由高炉煤气余压透平与电动机同轴双能源驱动的高炉鼓风机组的参数、设计特点和投运情况,也简述了同轴机组的优点。     

热脏发生炉煤气与空气蓄热技术在加热炉上的应用

介绍了石钢二轧厂利用燃热发生炉煤气与空气蓄热技术对燃煤粉加热炉进行改造的实践和效果。     

燃油烟气净化电收尘器的改造实践

介绍了以重油为燃料的回转窑半氧化焙烧烟气净化电收尘器运行中存在的问题、改造方案及效果,同时简述了热风清扫在大负压电收尘器上的应用情况.     

大气监测仪器的发展及检定中的问题探讨

本文叙述了大气监测仪器的起源发展过程,分析在检定工作中存在的问题,讨论了解决办法。     

一种新型的氨盐水机组

介绍了一种开启式螺杆氨盐水机组，采用PID控制的电子膨胀阀直接供液，蒸发器和冷凝器均采用半焊式板式换热器。并生产了一台样机进行测试，最终取得了很好的效果。     

DOAS应用于桌面工位空调的可行性分析

传统的全空间空调方式不能同时为所有人提供可接受的热感觉和室内空气品质，只有个体化调节方式才可以在更大程度上满足人员的不同需要；而近年各种疫情对空调建筑环境安全也提出新的问题。本文针对以上问题，分别介绍了桌面工位空调与独立新风系统（DOAS）的概念和特点，阐述并分析了DOAS应用于桌面工位空调的可行性及其优势。