Research And Evaluation Of Human And Environmental Suitability In Typical University Classroom

The Ministry of Education issued the Administrative Measures for Capital Construction of Universities directly under the Ministry of Education（2017 Revision）,which mentioned to build a resource-conserving and environment-friendly campus and a harmonious system of coordinated development of campus environment to achieve the sustainable development.Although China’s Ministry of Education and the State Administration of China require colleges and universities across the country to promote energy conservation and emission reduction work and further promote the construction of energy-saving campuses,while emphasizing building energy conservation,we cannot unilaterally pursue energy conservation at the expense of the comfort of indoor personnel,and should pay attention to the maintenance of a good artificial environment.The environment in the classroom in the campus building affects students’learning efficiency and quality of lectures,and may also affect students’health for a long time.The ladder classroom in colleges and universities is used frequently,and due to the large amount of waste generated by the metabolism of the personnel themselves,the long-term stay of students in the classroom will also have a certain impact on the indoor environment.Therefore,this paper studies the suitability between the typical university lecture theatre people and the indoor environment to improve the indoor environment of the university lecture theatre,so as to realize the health and comfort of the indoor environment,and create a more healthy,suitable and hygienic learning environment for college students.Starting from the main factors affecting the environment in the lecture theatre and user needs,this paper focuses on the test and statistics of the indoor environment,students’health and learning situation.The current situation of human and environmental suitability was analyzed based on the research results.Indoor environmental indicators were selected from the four aspects of indoor heat and wet environment,optical environment,acoustic environment and indoor air quality,and human health and course target achievement degree were taken as the user demand indicators,including a total of 9 sub-indicators.According to the 12 national standards and norms,the expert scoring method was used to determine the weight and construct a complete index evaluation and scoring system.An evaluation and scoring model was applied in the actual ladder classroom to test the rationality of the scoring system and put forward reasonable suggestions for the indicators with low score.Based on the evaluation results,the lecture theatre of a university in a cold area was considered as the research case.On the basis of the survey,the suitability of people and environment in typical university ladder classrooms under natural ventilation was quantitatively analyzed,with a view to improving the indoor temperature and CO₂level of the lecture theatre.The building model was established through Airpak to simulate the distribution of indoor temperature and humidity and CO₂concentration under three different seating conditions（13.64%,27.27%and 76.82%）.The conclusion was that when the occupancy rate is 13.64%and 27.27%,the average indoor temperature,humidity and CO₂concentration are within the standard range;but when the classroom occupancy rate is76.82%,the staff is more dense,resulting in the average temperature of the ladder theatre exceeds 0.3℃,making human thermal comfort easy to deteriorate,the average CO₂concentration at this time is 0.0068%.The CO₂concentration value in the local areas of the classroom exceeds the standard limit of 0.07%and the maximum is 0.1637%.According to the internal temperature and existing problems of excessive CO₂concentration of the ladder classroom,it is proposed that the school optimize and update them on the basis of not interfering with the existing inside structures of the ladder classroom when reasonably setting the curriculum arrangement.For this typical classroom,two transformation schemes were proposed,the average indoor temperature of scheme 1 is 27.82°C,which is 0.38°C higher than scheme 2,and the average CO₂concentration is 0.006%lower than that of scheme 2.Combined with the envelope structure and the operability of the scheme of the lecture theatre,a better optimization method for the suitability of people and the environment of the typical classroom is to add a gallery window.