A Quantitative Evaluation Method Of Indoor Environment

Good indoor environment can not only guarantee the health of the people,also can improve the work efficiency of people,Various studies of indoor environmental assessment have been published,but most of them are applicable to indoor air environment or thermal environment evaluation,the evaluation factor is not comprehensive;There are also a few studies combining indoor air environment and thermal environment for comprehensive evaluation,but its evaluation results more for qualitative description,By analysing the deficiency above,this paper adopt a quantitative method,combining air environment and thermal environment,to evaluate the indoor environment.Firstly,different quantitative models are used to quantify indoor air environmental factors and thermal environmental factors.The quantification of indoor air environmental factors was mainly based on epidemiological and toxicological studies.The effects of long-term exposure to TVOC,formaldehyde and PM2.5 on human were quantified as Disability Adjusted of Life Years(DALY).The quantification of indoor thermal environmental factors was mainly based on the human body engineering.Firstly,the APMV parameter were calculated using the thermal and humidity parameters,then according to the relationship of thermal sensation and the work efficiency of people calculating the effective working time loss caused by thermal environment,namely the loss of Valued Years of Life(VYL).By comparing the quantified results,different indoor environments can be compared,so as to provide a theoretical basis for the formulation of priority optimization measures for indoor environment.Secondly,on the basis of the quantitative results,this paper also particularly based on features of atmospheric pollution factor to the dangers of hazard index,use the "S" shape of gaussian function as a basic model score to describe the state of the indoor environment,by setting up the ideal value and standard value respectively to calculate the score model of air environment and thermal environment,and finally By assigning weights to the air environment and the thermal environment,calculating the comprehensive score.According to the score,the indoor environment is divided into three levels,of which the first level is the optimal environment,the second level is qualified,and the third level is unqualified.Finally,the indoor environment parameter information is collected through the experiment.The quantitative evaluation method and the traditional comprehensive fuzzy analytic hierarchy process are used to evaluate the indoor environment respectively,and the evaluation results are compared.The quantitative evaluation method mainly focuse on the overall effect,when indoor environment quantitative results beyond a standard value is not qualified,while the fuzzy analytic hierarchy process(fahp)focuses on the multiple of pollutants exceeding the standard,has a certain ambiguity,and the quantitative evaluation methods can make an objective analysis between the different environmental factors according to the quantitative results of each environmental factor,the fuzzy analytic hierarchy process can only according to the preset judgment calculating the weight of each environmental factor to obtain evaluation results,the evaluation results are somewhat subjective.the quantitative scoring model in this paper not only integrates more indoor environment factors,but also considers health,comfort and work efficiency,so as to have a more comprehensive evaluation of indoor environment.