高速列车车厢内空气品质及评价的探讨

根据高速列车车厢内空气品质的影响因素提出了改进空气品质的措施。根据气流组织的重要性,对高速列车车厢内气流组织模拟进行探讨,主要分析了物理模型的建立,湍流模型的选择以及边界条件选取等问题,为气流组织的数值模拟提供了思路。并应用CFD技术对车厢室内空气品质进行评估为改善高速列车车厢空气品质提供依据。     

空调列车空气品质的评价和改善措施

分析了引起空调列车空气品质下降的因素,介绍了几种关于室内空气品质的评价方法,并提出了一些改善空调列车内空气品质的措施。     

双级正升压空气制冷系统在铁路列车空调中的应用

研究了双级正升压式铁路列车空气制冷系统的流程问题,计算了各状态点热力参数,提出了需要解决的关键技术难题.该空调系统能够很好地应用于铁路列车空调(包括高速客运列车空调),是比较有前途的绿色环保型空调.     

列车车厢内空气品质的主观评价

本文采用了依据科学制定的主观评价标准格式对列车车厢内空气品质进行了描述，并对铁路空调列车内的旅客进行了问卷调查．通过对这次闯卷调查进行数理统计与分析，结果表明，空调列车内空气品质不佳的主要原因在于：新风量不足以及旅客的环境意识欠缺。     

列车空调节能初探

对新型列车空调的原理做了简介,并和现有列车空调进行了对比,通过可靠的试验数据,论证并进一步量化了列车空调可观的节约能耗,并极大改善列车车厢空气品质的优点.     

关于空调列车车厢内空气品质的现状分析与对策

阐述了空调列车车厢内空气品质的现状;分析了影响车厢内空气品质的主要因素;介绍了车厢内空气品质的评价方法,并提出了改善车厢内空气品质的措施.     

空调列车空气品质的主观评价方法的应用

提出了研究空调列车空气品质主观评价的方法,对主要的影响因素进行分析归纳,可供列车运行管理部门参考。     

双级压缩正升压流程空气制冷系统在列车空调中的应用探讨

研究了双级正升压式列车空气制冷系统的流程,计算了各状态点热力参数,提出了需要解决的关键技术难点.结论认为,该空调系统能够很好地应用于列车空调包括高速客运列车空调,是较有前途的绿色环保型空调.     

热管换热器在列车空调热回收中的应用

空调列车的室内空气品质和空调节能是目前列车空调中存在的两大矛盾因素,如果在列车空调系统内采用热管换热器应用于排风能量回收,可以有效的平衡两者之间的矛盾,在满足空气品质的同时,达到节能的目的。对其可行性等进行了分析,认为其节能效果明显。     

基于室内环境品质的空调列车车内空气参数标准研究

在分析国内外室内环境品质研究成果的基础上,首次引入了环境品质线的新概念,并结合空调列车车内空气参数的具体条件,提出了车内空气参数的一个建议性标准。     

Air Quality Prediction Based on Kohonen Clustering and ReliefF Feature Selection

Air quality prediction is an important part of environmental governance. The accuracy of the air quality prediction also affects the planning of people’s outdoor activities. How to mine effective information from historical data of air pollution and reduce unimportant factors to predict the law of pollution change is of great significance for pollution prevention, pollution control and pollution early warning. In this paper, we take into account that there are different trends in air pollutants and that different climatic factors have different effects on air pollutants. Firstly, the data of air pollutants in different cities are collected by a sliding window technology, and the data of different cities in the sliding window are clustered by Kohonen method to find the same tends in air pollutants. On this basis, combined with the weather data, we use the ReliefF method to extract the characteristics of climate factors that helpful for prediction. Finally, different types of air pollutants and corresponding extracted the characteristics of climate factors are used to train different sub models. The experimental results of different algorithms with different air pollutants show that this method not only improves the accuracy of air quality prediction, but also improves the operation efficiency.     

现代住宅室内通风方式探讨

本文总结了现代住宅的几种室内通风方式，并对新回风CO2浓度在线控制和其今后发展的方向进行了分析，而且在保证室内空气质量，并使其品质更高，更安全上提出了建议。     

供热空调系统效率计算方法

为了明确供热空调系统的能质利用情况,基于单耗分析理论和方法对供热空调系统的分析进行了进一步的研究和探讨。讨论了几种典型供热空调系统形式(锅炉供热、电热供热、热泵空调、吸收式冷热水机组)的效率计算方法,并总结出效率通式。为表征系统整个运行期的平均效率,提出了两种使供热空调系统的分析方法更为全面的方法(供热/冷量加权温度法和燃料加权法),并结合示例全面分析了基于热力学第一定律的一次能源利用率和基于热力学第二定律的效率,从而更为全面地了解各系统在全工况下的能源(质)利用情况。     

GA-BP Air Quality Evaluation Method Based on Fuzzy Theory

With the rapid development of China’s economy, the scale of the city has been continuously expanding, industrial enterprises have been increasing, the discharge of multiple pollutants has reached the top of the world, and the environmental problems become more and more serious. The air pollution problem is particularly prominent. Air quality has become a daily concern for people. In order to control air pollution, it is necessary to grasp the air quality situation in an all-round way. It is necessary to evaluate air quality. Accurate results of air quality evaluation can help people know more about air quality. In this paper, refers to previous research results and different evaluation methods, combined with artificial neural network, fuzzy theory, genetic algorithm, GA-BP hybrid algorithm based on fuzzy theory is proposed to evaluate air quality. At the same time, for the problem that the two-grade standard of air quality annual evaluation is not suitable for practical application, the four-grade standard for annual air quality evaluation has been proposed, and its practicality has been verified through experiments. By setting contrast experiments and comparing the air quality evaluation model based on standard BP algorithm, it is proved that the fuzzy GA-BP evaluation model is better than the standard BP model, both in efficiency and accuracy.     

变频技术在列车空调系统中应用的思考

本文阐述了我国铁路列车空调运行的现状，对列车空调应用变频技术进行分析，指出变频式列车空调系统具有节能和更好的满足旅客舒适性等优点。     

空调列车车厢内空气品质的模糊评价

结合空调列车的实际情况，设计出关于车厢内空气品质的问卷调查表并进行实地调查。在问卷调查统计结果的处理过程中采用模糊数学理论，综合考虑体现空气品质优劣的各个指标，并引入隶属函数，经过模糊变换得到车厢内空气品质的综合优劣度，为分析空气品质主观评价结果提供了一种新的方法。     

容克式空预器漏风故障分析及处理

容克式空气预热器是大中型电站锅炉上广泛采用的尾部换热设备,漏风率高是该类设备常见故障。本文对漏风原因进行分析,提出密封间隙调整和加强吹灰治理等对策,从而有效降低空预器漏风率。     

空调机组过滤器及换热设备结尘、结垢的处理方法

过滤器及换热器发生结尘和结垢，这对空调机组的运行而言既不经济又无法保证正常的使用要求。本文提出了空调机组结尘和结垢的危害性，并提出了解决问题的方法。     

空调制造业对生物污染的防治策略

非典型肺炎的流行，使得室内空气品质再次成了人们关注的问题。本文介绍了室内空气品质的影响因素，总结了现有的防治室内生物污染的一些有效措施，并提出了若干建议。     

Progress of Air Pollution Control in China and Its Challenges and Opportunities in the Ecological Civilization Era

China’s past economic growth has substantially relied on fossil fuels, causing serious air pollution issues. Decoupling economic growth and pollution has become the focus in developing ecological civilization in China. We have analyzed the three-decade progress of air pollution controls in China, highlighting a strategic transformation from emission control toward air quality management. Emission control of sulfur dioxide (SO₂) resolved the deteriorating acid rain issue in China in 2007. Since 2013, control actions on multiple precursors and sectors have targeted the reduction of the concentration of fine particulate matter (PM_2.5), marking a transition to an air-quality-oriented strategy. Increasing ozone (O₃) pollution further requires O₃ and PM_2.5 integrated control strategies with an emphasis on their complex photochemical interactions. Fundamental improvement of air quality in China, as a key indicator for the success of ecological civilization construction, demands the deep de-carbonization of China’s energy system as well as more synergistic pathways to address air pollution and global climate change simultaneously.