新风量对室内空气品质影响的不确定性方法分析研究

【作者】 马卫武；

【导师】 李念平；

【作者基本信息】 湖南大学 ， 供热、供燃气、通风及空调工程， 2003， 硕士

【摘要】 由于不良通风和大量化学合成剂在建筑材料中的使用，使得室内空气污染物的浓度常常高于室外。这样，室内空气品质要求新风量越大越好，然而空调系统中，新风量越少，就越节能。如何确定合适的新风量始终是空调技术人员面临的难题。 不确定性方法是用来解决信息不完全、不确定的问题的方法， 室内新风量是一个复杂的问题，存在很多不确定性的条件，因此本文尝试用不确定性方法来研究室内新风量与室内空气品质。 根据灰色系统理论的建模思想，利用灰色系统理论和原有的确定性物理模型建立新风量对室内空气品质影响的灰色非本征模型，并对灰色非本征模型中的各个灰参数进行分析，在此基础上，将建立的模型对不同新风量条件下室内CO₂浓度随时间的变化过程进行模拟计算分析。 利用模糊学理论处理人们对室内新风量的主观反应的所有信息，得出在不同新风量下的烦恼概率，并以此加权平均，得出室内无人吸烟环境的新风量烦恼度阈值。同时通过统计分析得出在有人吸烟时，来访者不满意率明显高于室内人员，在无人吸烟时，来访者不满意率略低于室内人员；女性不满意率略高于男性；平时不吸烟者不满意率明显高于平时吸烟者。 为了科学的评价室内空气品质，本文重点分析了室内空气品质综合评价中的评价指标、评价标准和权重系数，使室内空气品质的综合评价具有较高的灵敏度。更多还原

【Abstract】 Because bad ventilation and a large amount of synthetic material used in the construction material, the concentration of air contaminations indoors are often higher than the outdoors. In order to keep indoor air quality comfortably people require more fresh air ; but the less fresh air amount is, the more energy-conservation is. How to confirm that the suitable new trend amount is the difficult problem that the technical staff of air conditioner faces all the time.The uncertain method is a way to be used for solving the problem that the information is not complete uncertain. The fresh air in the room is a complicated problem, which is a lot of uncertain conditions. So this paper try to study fresh air and indoor air quality problem with uncertain method.This paper firstly utilizes grey systematic theory and already existing definite physical model to develop the non-intrinsic grey model of the effect of outdoor air on indoor air and analyse every grey parameter in the non-intrinsic grey model. On the basis of above mentioned, the change of carbon dioxide concentration indoor with the change of time is evaluated.Dealing with all the information of subjective responses to fresh air indoor by fuzzy theory. The annoying probability is found under the different amount of fresh air, the annoying threshold of fresh air under the environment of no smoking indoor is gained though weighted average. At the same time , through statistical analysis, visitor unsatisfied rate higher than indoor personnel obviously someone when someone smoke indoor ; visitor unsatisfied rate lower than indoor personnel slightly when not any one smoke indoor . Women unsatisfied rate higher than man slightly; Non-smoker unsatisfied rate higher than smoker.In order to evaluate indoor air quality of office, this paper analyze three element such as evaluation indexes, evaluation standards and weight coefficient .It revealed higher sensitivity in the comprehensive evaluation on indoor air quality in office buildings.更多还原