主题广场及其设计思考——以南阳创业科技广场设计为例

论述了主题广场的性质与意义,分析了适宜运用主题广场的城市空间,提出了该类广场创作中应具有的主题凝聚的思想,并结合南阳创业科技广场的设计实践,阐述了从功能定位、设点布局、夜景亮化、小品塑造等四方面紧密围绕科技内涵塑造主题特色的体会。     

炼油厂塔顶冷凝装置缓蚀剂研究进展

介绍了石油化工行业常减压蒸馏装置塔顶冷凝系统的腐蚀机理,综述了塔顶冷凝装置常用的缓蚀剂种类及开发与应用研究现状;分析了缓蚀剂的缓蚀机理和工业常用的缓蚀剂的评价方法,并对缓蚀剂的开发与应用前景进行了展望。     

天然气锅炉改造为冷凝式锅炉的经济性评价

燃气供热锅炉排烟温度较高，带走了大量的热能。如果加装冷凝式换热器回收烟气的显热及潜热，可以大大提高锅炉效率，但是加装换热器必然增加设备成本。本文通过对冷凝式换热器设计计算，计算出不同排烟温度下的热能回收设备投资回收期，从经济上分析了天然气锅炉改造为冷凝式锅炉的可行性，并给出了锅炉最佳排烟温度。     

Improved energy performance of air cooled centrifugal chillers with variable chilled water flow

This paper considers how to apply optimum condensing temperature control and variable chilled water flow to increase the coefficient of performance (COP) of air cooled centrifugal chillers. A thermodynamic model for the chillers was developed and validated using a wide range of operating data and specifications. The model considers real process phenomena, including capacity control by the inlet guide vanes of the compressor and an algorithm to determine the number and speed of condenser fans staged based on a set point of condensing temperature. Based on the validated model, it was found that optimizing the control of condensing temperature and varying the evaporator’s chilled water flow rate enable the COP to increase by 0.8–191.7%, depending on the load and ambient conditions. A cooling load profile of an office building in a subtropical climate was considered to assess the potential electricity savings resulting from the increased chiller COP and optimum staging of chillers and pumps. There is 16.3–21.0% reduction in the annual electricity consumption of the building’s chiller plant. The results of this paper provide useful information on how to implement a low energy chiller plant.     

Transition between Condensing and Air Flow Drying of Thin-Film Coatings

The transport characteristics were investigated in the bench-top condenser dryer, which is a new and air-free drying system for advanced coating applications. The measured solvent drying rate agrees with the one-dimensional diffusion theory in the early drying stages, showing the validity of the previously proposed diffusion models in a quantitative sense. The combination of the condenser dryer with the air flow system revealed a characteristic transition in the diffusion kinetics between the convection-drying and the condensing-drying regimes. The drying of immiscible ternary solution coatings showed a transition in the phase-separated morphologies from the isolated droplets to the elongated stripe patterns.     

对抽凝式供热机组主要节能指标的探讨

在分析抽凝式供热机组的热电比、热效率、供(发)电标煤耗率等技术指标的基础上,确定部分抽凝式供热机组节能边界条件,并用以评价这类机组。     

快餐店厨房冷库制冷系统安装及注意事项

本文对快餐店厨房冷库制冷系统的安装提出了一些技术要求,并对安装过程中所遇到到问题、正确的安装方法以及一些细节作一下介绍。     

华南地区旅馆中央空调冷凝热在制备生活热水中的应用

结合广州一座典型的酒店的生活热水和空调冷凝热的全年和日逐时的情况,分析和探讨了空调冷凝热在生活热水制备中可能的应用途径、方法,并得出在华南地区利用中央空调冷凝热制备生活热水有明显的经济性.     

对AATCC 81湿处理纺织品水萃取pH值测试方法的探讨

在进行AATCC 81 pH值测试时,不同测试人员之间的结果偏差较大,可达0.2个pH单位。本文改进了测试方法,采用冷凝装置后,使数据的重现性较好。     

浅谈VRV空调系统安装的问题

本文结合实际工程论述室外机冷凝排热的气流组织、VRV系统冷媒管道及冷凝排水管在安装过程中需注意的问题,指出不正确的安装是造成VRV系统运行不正常的主要原因.