HVAC系统对室内空气品质的影响及改进建议

本文首先详细介绍了暖通空调系统对室内空气品质的作用,然后具体分析了暖通空调系统各部分对室内空气品质的影响,最后,综合多项工程经验提出了改进暖通空调系统对室内空气品质影响的几点建议。     

暖通空调技术在室内空气环境品质控制中的应用

人类大部分时间是在室内度过的,室内空气环境质量直接影响着人类的身心健康和劳动效率,合理地运用暖通空调措施是实现良好的室内环境品质的重要手段。文章介绍了影响室内空气环境的因素,并从空调系统应用、通风的有效性与室内环境品质的关系以及空调系统的噪声控制等方面阐述了暖通空调技术与室内环境结合的具体技术措施。     

暖通空调技术在室内空气环境品质控制中的应用初探

本文介绍了影响室内空气环境的因素,并从空调系统应用、通风的有效性与室内环境品质的关系以及空调系统的噪声控制等方面阐述了暖通空调技术与室内环境结合的具体技术措施。     

暖通空调系统部件对室内空气品质影响的分析

随着经济的发展,人们对于室内空气品质方面的关注度也在不断的提升。暖通空调系统是影响室内空气品质的重要因素,因此,为保证人们生产生活中具有一个良好的环境,保证室内空气的良好品质,就需要加强对于暖通空调系统部件对室内空气影响的分析。本文从暖通空调对室内空气品质产生影响的因素入手,并分析了污染物产生的途径,以期促进室内空气品质的提升。     

空调系统对室内空气品质的影响分析

结合空调系统对室内空气品质产生的危害，分析了空调系统设计对室内空气品质的潜在影响，详细地介绍了设计中改善空气品质的途径，以使空调系统满足人们日益提高的室内空气品质要求。     

合肥联投国际广场超高层建筑暖通设计

随着我国城市化进程的加快,二线及三线城市建筑行业也在飞速发展。建筑形式也在以高楼大厦为主,而且人们越来越关注室内空气品质,暖通空调系统也在越来越受到重视。以合肥联投国际广场超高层建筑为例,在简要介绍建筑概况及建筑业态的基础上,从空调设计,通风防排烟系统,控制系统等几个方面对本工程的暖通空调系统进行介绍。     

建筑暖通空调节能优化设计策略探讨

当前阶段,暖通空调的节能优化设计应用在很多领域,并且暖通空调的设计也具有系统性以及技术性的特征,而空调系统运行的情况会对建筑室内空气的质量以及环境温度产生直接影响,进而影响人们居住的感受.为了解决暖通空调系统能耗较高的问题.本文将某地区的某个酒店作为案例对暖通空调的节能优化进行深入研究,首先论述暖通空调节能优化的概念与...     

暖通空调系统中环保节能技术应用发展探讨

随着人们生活水平的提高,人们对室内环境的要求也越来越高,不仅是温湿度的控制要求,更是室内空气品质、人体舒适性的要求;而在节能减排的大背景下,建筑能耗主要是暖通空调能耗也应降低,这就要求对于暖通空调系统进行节能技术的应用。本文就节能技术的应用与发展进行阐述,指出暖通空调进行环保系统升级的重要性,提出该系统环保进行设计的具体措施。     

在空调设计中提高空气品质的方法探讨

室内空气品质的研究,已成为现代空气调节技术中的一个重要研究课题,本文通过论述空调设计对室内空气品质的影响,指出为了提高室内空气品质,空调设计应该主要从4个方面来改善,即温度和湿度、新风、气流组织和系统形式。     

''''98暖通年会专题讨论概要

简要介绍1998暖通空调制冷年会期间17个专题组的讨论概况,包括室内空气品质、置换通风、冷热源、变风量、热泵、三联供、计算机应用等方面内容.     

浅谈室内空气品质

描述了室内空气品质 (IndoorAirQuality)这一为人们日益关注的概念 ,分析了各类因素对室内空气品质的影响。指出改善室内空气品质是一项综合工程 ,其中合理的建筑设计及通风空调系统是重要的影响因素     

通风空调对室内空气品质的影响

加强通风空调系统对室内空气品质的正面作用,除了加大通风量外,近年来提高送风量的品质措施越来越多,本文强调的要深层次认识通风空调自身污染对室内空气品质的负面影响。针对目前空调系统的设计,提出了消除通风空调系统对室内空气品质负面影响、有效发挥其正面作用的一些措施。     

Uncertainty in indoor air quality and grey system method

Based on analysis of uncertainty, this paper presents grey system theory to handle the “grey” characteristic of IAQ. Grey comprehensive analysis of indoor air quality reveals that we should pay more attention to the air purification and humidity control in the design and maintenance of HVAC. In order to represent grey characteristic of IAQ system, the educed grey IAQ models can identify the variation intervals of key IAQ model parameters that are lack of directly measurable messages in practical situations. Furthermore, grey assessment is an effective multifactor comprehensive assessment method that can express the integrative influence of contamination indexes on indoor air quality. We can determine the IAQ grade and make comparison according to the grey incidence matrix R.     

A combined system of chilled ceiling,displacement ventilation and desiccant dehumidification

Different types of heating, ventilation, and air-conditioning (HVAC) systems consume different amounts of energy yet they deliver similar levels of acceptable indoor air quality (IAQ) and thermal comfort. It is desirable to provide buildings with an optimal HVAC system to create the best IAQ and thermal comfort with minimum energy consumption. In this paper, a combined system of chilled ceiling, displacement ventilation and desiccant dehumidification is designed and applied for space conditioning in a hot and humid climate. IAQ, thermal comfort, and energy saving potential of the combined system are estimated using a mathematical model of the system described in this paper. To confirm the feasibility of the combined system in a hot and humid climate, like China, and to evaluate the system performance, the mathematical model simulates an office building in Beijing and estimates IAQ, thermal comfort and energy consumption. We conclude that in comparison with a conventional all-air system the combined system saves 8.2% of total primary energy consumption in addition to achieving better IAQ and thermal comfort. Chilled ceiling, displacement ventilation and desiccant dehumidification respond consistently to cooling source demand and complement each other on indoor comfort and air quality. It is feasible to combine the three technologies for space conditioning of office building in a hot and humid climate.     

二氧化碳传感器控制新风量技术

通过对不同空调系统新风量控制方法的分析,认为二氧化碳传感器控制空调系统新风量是一种直接改善室内空气品质的新风量控制方案,在介绍了二氧化碳传感器的性能及特点后,分析了二氧化碳传感器控制新风量技术在工程实践中的典型应用,并提出了完善二氧化碳传感器控制新风量技术的改进方向与思路。     

An integrated modeling tool for simultaneous analysis of thermal performance and indoor air quality in buildings

To analyze the thermal performance and indoor air quality (IAQ) in building simultaneously and quickly, we have developed an integrated modeling tool to simulate the dynamic indoor multi-parameters distributions and concentrations. The tool can take the parameters including indoor temperature, indoor humidity, and pollutant concentrations (e.g., volatile organic compounds (VOC) CO₂, particulate matter (PM)), as well as the heating/cooling load of heating, ventilating, and air-conditioning (HVAC) system into account. It couples a new zonal approach based on room air age. This paper presents the basic concept and flow chart in developing the modeling tool, and demonstrates the tool's application in a hypothetical health care building. The tool could be used for design of HVAC system with IAQ control devices and for the simultaneous analysis of thermal performance and IAQ in buildings.     

新型绿色空调—Genius 湿能空调器应用前景分析

对一种采用模块结构设计的新型绿色空调器进行了简介。它是一种具有独特除湿器和再生器的液 体除湿空调器。本文结合该空调器的特点,并针对空调制冷目前面临的问题,如节能、空气品质及环保等,对其应 用前景进行了分析。     

新型绿色空调—Genius~湿能空调器应用前景分析

对一种采用模块结构设计的新型绿色空调器进行了简介。它是一种具有独特除湿器和再生器的液体除湿空调器。本文结合该空调器的特点 ,并针对空调制冷目前面临的问题 ,如节能、空气品质及环保等 ,对其应用前景进行了分析。     

The effects of building‐related factors on classroom relative humidity among North Carolina schools participating in the ‘Free to Breathe,Free to Teach’ study

Both high and low indoor relative humidity (RH) directly impact Indoor Air Quality (IAQ), an important school health concern. Prior school studies reported a high prevalence of mold, roaches, and water damage; however, few examined associations between modifiable classroom factors and RH, a quantitative indicator of dampness. We recorded RH longitudinally in 134 North Carolina classrooms (n = 9066 classroom‐days) to quantify the relationships between modifiable classroom factors and average daily RH below, within, or above levels recommended to improve school IAQ (30–50% or 30–60% RH). The odds of having high RH (>60%) were 5.8 [95% Confidence Interval (CI): 2.9, 11.3] times higher in classrooms with annual compared to quarterly heating, ventilating, and air‐conditioning (HVAC) system maintenance and 2.5 (95% CI: 1.5, 4.2) times higher in classrooms with HVAC economizers compared to those without economizers. Classrooms with direct‐expansion split systems compared to chilled water systems had 2.7 (95% CI: 1.7, 4.4) times higher odds of low RH (<30%). When unoccupied, classrooms with thermostat setbacks had 3.7 (95% CI: 1.7, 8.3) times the odds of high RH (>60%) of those without setbacks. This research suggests actionable decision points for school design and maintenance to prevent high or low classroom RH.     

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。