酚醛泡沫材料在中央空调风管中的应用

本文简要介绍酚醛泡沫材料的特性，并详细说明酚醛复合风管的各项性能技术参数，并将酚醛复合风管与其他几种常见空调风管的性能进行了比较。比较结果表明酚醛复合风管具有非常广阔的市场前途。     

酚醛泡沫材料在中央空调风管中的应用

介绍了酚醛泡沫材料的特性,说明酚醛复合风管的各项性能技术参数,并将酚醛复合风管与其他几种常见空调风管的性能进行了比较。比较结果表明：酚醛复合风管具有非常广阔的市场应用前途。     

彩钢酚醛复合风管与普通复合风管的对比分析

彩钢酚醛复合风管具有明显的优势,普通复合风管外层为铝箔,即双面铝箔。保温材料通常选用易燃的聚氨酯泡沫或聚苯乙烯泡沫,因此虽然其保温性能比铁皮风管要好,但强度和防火性能却低于铁皮风管。彩钢酚醛风管外层采用彩钢板,内层保温材料为有机材料中不燃性能最好的酚醛泡沫,因此可避免普通复合风管的缺陷,具有明显的优势：符合防火A级标准：彩钢酚醛风管的内层采用酚醛泡沫材料。试验表明,     

浅述酚醛复合风管施工中的质量问题及控制措施

酚醛复合风管是一种新型管材是由内外覆盖铝箔的酚醛发泡材料构成，表面光滑而平整，通过专用粘接剂及难燃PVC法兰连接件组成风管。因其具有密度小、质量轻、环保卫生、安装方便等特点，在空调工程当中得到愈来愈普遍的应用。深圳分公司总承包的安联大厦工程中，采用了酚醛复合风管。在施工过程当中，在感受到此种风管优点的同时，也发现了此种风管在施工中易因其材料及施工工艺特点的原因，     

家用中央空调风管材料的选择

本文首先对家用中央空调风管系统使用的特殊性进行了分析,然后对两种常用的风管——镀锌铁皮风管和复合风管进行了技术和经济比较,指出以酚醛泡沫铝箔风管为代表的复合风管具有明显的优势。     

彩钢酚醛复合风管与普通复合风管的对比分析

彩钢酚醛复合风管具有明显的优势,普通复合风管外层为铝箔,即双面铝箔。保温材料通常选用易燃的聚氨酯泡沫或聚苯乙烯泡沫,因此虽然其保温性能比铁皮风管要好,但强度和防火性能却低于铁皮风管。彩钢酚醛风管外层采用彩钢板,内层保温材料为有机材料中不燃性能最好的酚醛泡沫,因此可避免普通复合风管的缺陷,具有明显的优势:符合防火A级标准:彩钢酚醛风管的内层采用酚醛泡沫材料。试验表明,100mm酚醛泡沫抗火焰能力可达1h以上而不被穿透,且烟密度低于3%,因此能确保施工人员和使用人员的安全。外表面采用0.2mm厚的彩钢板后,可大大增强了抵御火灾的能力。将瑰宝节能材料有限公司     

铝泊复合隔热夹芯板材在空调领域中的应用与推广的探讨

以节约能源为主题,对几种常用空调风管保温材料进行比较,笔者认为用铝箔复合隔热夹芯板制作空调风管是今后空调风管的发展方向.     

铝箔复合隔热夹芯板材在空调领域中的应用与推广的探讨

以节约能源为主题,对几种常用空调风管保温材料进行比较,笔者认为用铝箔复合隔热夹芯板制作空调风管是今后空调风管的发展方向。     

彩钢酚醛复合风管性能比较及在工程中的应用

彩钢酚醛泡沫复合风管综合了镀锌铁皮风管和铝箔复合风管的优点,不仅保温性能好、施工方便,而且强度高、防火性能强,大大拓宽了复合风管的应用范围,尤其在钢结构工程、大型公用工程、医疗工程中具有明显的优势,这就为复合风管全面替代镀锌铁皮风管创造了条件。     

关于各种风管的性能分析

主要介绍了有关于各种风管的特性的分析及安装注意事项,及其施工经验的总结。从节能、环保的角度考虑,得出的结论是:双面铝箔复合聚氨酯、酚醛风管和双面彩钢复合风管各有其优越性,在通风空调专业的管道设计中,应结合工程实际加以选择。     

应用层次分析法对风管系统的性能进行评价

本文首先介绍了层次分析法的基本思想,然后建立了中央空调风管系统综合性能评价层次结构模型,并计算出该模型中各准则层和各子准则层的权重系数,最后,根据本文建立的评价模型对中央空调四种常用的风管系统进行了综合评价。评价结果标明:无论在那种具体偏向情况下,酚醛铝箔风管都具有最好的综合性能评价指标。     

Strategy on applying computational fluid dynamic for building performance evaluation

Predicting and evaluating building performance plays an important role in the training of responsible architects. Building performance includes issues such as: structural stability, acoustic quality, natural lighting, thermal comfort, and ventilation and indoor air quality. These types of analyses are often laborious, non-intuitive, and non-graphical. As a result, these important issues do not arouse the enthusiasm of architecture students or building professionals. The Chinese University of Hong Kong (CUHK) research team proposes to explore and develop a long-term strategy to apply scientific visualization on teaching and research in environmental technology and building performance. This paper presents the development process and results of research projects for applying computational fluid dynamics (CFD) on building performance evaluation. CFD On-line Teaching project's aim is to develop a web-based training course for architecture students to apply CFD simulation on design problem solving. Each lesson not only illustrates basic principles regarding airflow in the building design, it also contains CFD sample files with predefined flow cells for students to test different concepts. GiLin Temple project's aim is to apply CFD simulation on investigating the wind resistance of Tong Dynasty heavy timber structure. Airflow information generated in the project includes the visual representation of the pressure distribution and velocity field on all slices through the temple, and the tracking of particles as they flow around or through a building. The China housing residential airduct study focuses on simulating the indoor airflow regarding the airduct design of China Experimental Urban Housing Scheme. The visual representation of the pressure distribution and velocity field in the airducts provides vital information for helping China Housing Research Center improve the current design.     

复合铝箔玻璃纤维风管性能剖析

分析了复合铝箔玻璃纤维风管的构成，特点，说明该产品的性能优势和局限性。认为采用复合材料替代传统材料是当代技术发展的大趋势，该产品目前虽不能完全取代传统风管，但很有发展潜力，国内空调界应引起重视，加强开发研究。     

金属填料直接蒸发式空调机性能研究

对铝箔金属填料直接蒸发冷却空调机进行了实验研究。分析了进口空气干球温度、相对湿度对空调机降温及冷却效率的影响,为直接蒸发冷却式空调机性能的提高具有一定的参考意义。     

ETFE气枕模型试验与有限元分析

通过2 m×2 m的ETFE气枕模型试验,进行了气枕形状测试、充气加压测试和气压一定的加载测试。通过在上下膜面画上一组刻线,测量膜面在充气过程中刻线长度的变化,进而求得膜面应力的变化。基于膜面应力和气枕矢高的试验测试值与几何非线性有限元分析结果比较,验证了ETFE气枕有限元模拟方法的正确性。研究表明：由于ETFE气枕充气过程中膜材伸展率较大,膜面粘贴应变传感器很难捕捉准确的膜面应力,采用膜面画刻线的方法可以用于测试ETFE充气结构的膜面应力;立体裁剪的ETFE气枕,充气成形过程中,膜面基本展开时零应力状态下,膜面角部区域已张紧,具有初始应力,因此,角部区域膜面应力测试时需给予初应力补偿;ETFE膜材热熔焊缝相当于膜材局部加强,顺焊缝及垂直焊缝的实测应力小于按均匀材料计算的应力,但对整体充气膜面应力的影响很小;膜面应力和气枕矢高的试验测试值与有限元分析值基本吻合。     

Gaseous formaldehyde removal: A laminated plate fabricated with activated carbon,polyimide, and copper foil with adjustable surface temperature and capable of in situ thermal regeneration

Formaldehyde is one of the most common indoor air pollutants in Chinese residences. This study introduces a novel laminated plate with adjustable surface temperature to remove gaseous formaldehyde. The plate is fabricated with activated carbon, polyimide, and copper foil via thermal compression. The plate can be regenerated in situ by applying a direct current to the copper foil. Adsorption‐regeneration cycle tests were conducted to evaluate the plate's formaldehyde removal performance. The overall removal efficiency of the fabricated laminated plate with glue mass fraction of 25% and thickness of 1.5 mm was about 30% at the face velocity of 0.8‐1.2 m/s. The pressure drop was about 5 Pa. Its removal ability can be regenerated in situ in 8 minutes by increasing the surface temperature to 80°C. The fabricated laminated plate showed good durability after 52 cycles of adsorption‐regeneration tests. The results indicate that the proposed laminated plate can enhance the purifying efficiency and enlarge the life span of ordinary, cheap sorbents. It makes cheap materials with low performance suitable for air purification.     

ETFE foil cushions in roofs and atria

Building fenestration can be responsible for a significant impact on the environment created in a building, affecting, either adversely or beneficially, both the health and perceptions of the occupants. Alternative to traditional fenestration solutions have been available for a great many years, one of which is ethylenetetrafluoroethylene (ETFE) a co-polymer of PE and tetrafluoroethylene which has been used for the past 20 years for atria and other overhead glazing. This study examines both the effects of ETFE manufacture and its use in buildings. This study has considered both its performance in terms of fitness for purpose and in comparison to glass, the common alternative. Some built examples of ETFE foil roofs are presented. It is concluded that ETFE foil is an appropriate technology for certain building applications, in particular those where the volume of space is large and high light levels are important. ETFE foils can improve the environmental performance of a building and may reduce the overall environmental burden incurred from the construction process itself and the burden of the building during its lifetime.     

ETFE薄膜气枕模型试验研究

设计制作了2个不同矢跨比的ETFE薄膜气枕模型,进行了气枕形状测试、加压以及铺砂加压试验,得到了气枕形状坐标以及膜面随气压的变形量。对ETFE薄膜进行单向拉伸试验,测得材料的屈服强度、切线弹性模量和割线弹性模量。利用几何非线性有限元进行了数值分析,将数值结果与试验值进行了比较分析。结果表明:ETFE薄膜可按各向同性材料分析,数值计算结果与试验值吻合较好;在同样内压作用下,气枕矢高较高时膜面位移与膜面应力较小;ETFE薄膜采用割线弹性模量计算得到的膜面位移与试验值比较吻合,采用切线弹性模量计算得到的变形小于试验值。