室内空气中甲醛的去除

介绍了物理吸附法、化学法和生物法等去除甲醛的方法的研究概况,指出了今后的研究方向.     

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.     

便携式比色计在室内空气中甲醛快速检测的应用研究

便携式比色计具有方便快速的特点。本文以酚试剂为吸收液、硫酸铁铵溶液为显色剂,现场采集空气,利用便携式比色计直接读取吸收液的吸光值,通过公式计算得到空气中的甲醛浓度。     

风管清洗:改善室内空气品质的有效方法

介绍了几种适用于不同空调系统的风管清洗设备以及风管清洗的工艺流程。提出了风管清洗面临的问题。分析了几个实际工程风管清洗后的测试结果。     

室内空气净化技术的研究与进展

介绍了净化室内不同空气污染物采取的相应净化技术,针对室内VOC,常用吸附法、光催化法、纳米材料净化法;针对室内空气颗粒物,主要采用机械过滤、静电除尘技术、低温等离子体技术、纳米光催化技术等,而微生物的净化主要是利用纳米TiO2光催化技术。还介绍了生物净化技术、膜分离技术等室内空气净化技术的最新进展。     

室内空气品质研究的探讨

针对室内空气品质是人们生活和工作最重要的环境因素之一,并通过目前国内外室内空气品质的定义和评价,分析了几种可能影响室内空气品质的因素,并探讨了空气质量的控制问题,从而充分改善室内空气品质。     

室内空气品质预测新方法

分析了常用的室内空气品质预测方法中存在的问题,根据室内空气品质不满意率和化学污染物对数评价指标间的线性关系,在室内污染物浓度场预测的基础上提出了一种预测室内空气品质的新方法。该方法简单可行,且能综合体现主、客观评价结果。     

冰蓄冷低温送风系统设计方法(1):室内计算参数、舒适感、室内空气品质

介绍了国内外有关人体舒适感和室内空气品质的研究成果。认为低温送风空调系统可以改善室内环境、提高室内空气品质，给出了其室内计算参数并进行了详细说明。     

室内空气品质若干误区辨析

阐述了目前对室内空气品质问题一些认识上的误区。不解决这些误区就难以对室内环境实施更有效的控制，也难以将我国室内空气品质的研究提高到一个新水平。     

纳米光催化材料消除空气中低浓度甲醛的实验研究

通过与活性碳纤维吸附性能的对比,分析了纳米光催化材料消除甲醛的性能。实验研究了甲醛初始体积分数、TiO2质量分数和外界条件（温度、相对湿度和气流速度）对光催化性能的影响。实验结果表明,纳米光催化材料比单纯的活性碳纤维对甲醛的消除性能有一定程度的提高;单因素影响下温度对光催化性能影响较大;多因素交互作用下温度和甲醛的初始体积分数对光催化性能的影响较大。     

我国目前室内空气品质改善的对策与措施

强调改善室内空气品质应该有一种紧迫感，不应纠缠一些复杂的理论问题；当务之急是尽快建立起我国的室内空气品质标准和评价方法；尽管将成熟有效的措施和方法应用于实际。从这三方面介绍了应采取的对策和措施。     

室内空气品质改善措施

主要从民用建筑空调系统——全面通风、新风处理和新风质量、送风方式、空调设备、运行工况等方面探讨了如何防止病态建筑的产生,提高室内空气品质,从而使人们享受舒适的现代生活而不会被"病态建筑综合症"侵扰,并就此提出了改善室内空气品质应采取的措施和方法。     

Significant OH production under surface cleaning and air cleaning conditions: Impact on indoor air quality

We report measurements of hydroxyl (OH) and hydroperoxy (HO₂) radicals made by laser‐induced fluorescence spectroscopy in a computer classroom (i) in the absence of indoor activities (ii) during desk cleaning with a limonene‐containing cleaner (iii) during operation of a commercially available “air cleaning” device. In the unmanipulated environment, the one‐minute averaged OH concentration remained close to or below the limit of detection (6.5×10⁵ molecule cm^?3), whilst that of HO₂ was 1.3×10⁷ molecule cm^?3. These concentrations increased to ~4×10⁶ and 4×10⁸ molecule cm^?3, respectively during desk cleaning. During operation of the air cleaning device, OH and HO₂ concentrations reached ~2×10⁷ and ~6×10⁸ molecule cm^?3 respectively. The potential of these OH concentrations to initiate chemical processing is explored using a detailed chemical model for indoor air (the INDCM). The model can reproduce the measured OH and HO₂ concentrations to within 50% and often within a few % and demonstrates that the resulting secondary chemistry varies with the cleaning activity. Whilst terpene reaction products dominate the product composition following surface cleaning, those from aromatics and other VOCs are much more important during the use of the air cleaning device.     

改善室内空气质量的下一个目标

根据国外发展的趋势,预测改善室内空气质量的下一个目标应是治理生物性污染,生物性污染将会取代目前建筑装饰材料污染成为我国主要室内微污染源。生物性污染主要是由空调系统污染和不合适的空调环境引起的,提出了余湿污染概念,并介绍了相关的研究工作以及应采取的控制措施。     

室内空气品质研究现状与发展

从室内空气品质的定义、室内空气品质的评价室内空气品质问题的起因、通风与室内空气品质的关系、提高室内空气品质的手段等５个方面介绍了国内外有关研究工作的现状。     

Advanced buffer materials for indoor air CO2 control in commercial buildings

In this study, we evaluated solid sorbents for their ability to passively control indoor CO₂ concentration in buildings or rooms with cyclic occupancy (eg, offices, bedrooms). Silica supported amines were identified as suitable candidates and systematically evaluated in the removal of CO₂ from indoor air by equilibrium and dynamic techniques. In particular, sorbents with various amine loadings were synthesized using tetraethylenepentamine (TEPA), poly(ethyleneimine) (PEI) and a silane coupling agent 3‐aminopropyltriethoxysilane (APS). TGA analysis indicates that TEPA impregnated silica not only displays a relatively high adsorption capacity when exposed to ppm level CO₂ concentrations, but also is capable of desorbing the majority of CO₂ by air flow (eg, by concentration gradient). In 10 L flow‐through chamber experiments, TEPA‐based sorbents reduced outlet CO₂ by up to 5% at 50% RH and up to 93% of CO₂ adsorbed over 8 hours was desorbed within 16 hours. In 8 m³ flow‐through chamber experiments, 18 g of the sorbent powder spread over a 2 m² area removed approximately 8% of CO₂ injected. By extrapolating these results to real buildings, we estimate that meaningful reductions in the CO₂ can be achieved, which may help reduce energy requirements for ventilation and/or improve air quality.     

室内空气品质问题探讨及改善

通过了解装修材料销售场所室内空气中有害物质的污染状况,分析了引起室内空气品质问题的原因,探讨了影响室内空气品质的因素,提出了改善装修材料销售场所室内空气品质的措施。     

新装修办公室内空气污染的消除试验

以一个新装修的办公室为研究对象,对室内的污染状况进行了检测。从控制污染源和消除室内空气污染两方面进行了净化试验。试验结果表明,在有紫外线灯照射时,用臭氧水对空间和人造板表面进行喷雾,同时保持室内高臭氧浓度的方法对降低人造板的甲醛散发量有明显效果;利用夜间产生高浓度臭氧、白天产生低浓度臭氧结合活性炭吸附的方法能有效消除室内空气中的甲醛和氨气。     

室内空气品质的影响因素分析

参照美国ASHRAE标准62—1999,对影响室内空气品质的因素进行了分析,如室内的污染源、受污染的室外空气、不足的新风量、气流组织的不当、空调系统运行管理维护的不当等等,对这些影响因素的深入分析是避免病态建筑、实现健康建筑的基础。     

室内空气中潜在的化学反应与空气品质

探讨了室内污染物发生潜在反应的环境条件 ,分析了臭氧与室内无机物和有机物可能发生的化学反应和光化学反应 ,讨论了这些潜在的反应对室内空气品质的影响 ,提出了改善室内空气品质的途径