MEASUREMENT AND IMPROVEMENT OF INDOOR AIR QUALITY IN AN INFORMATION TECHNOLOGY CLASSROOM by

the teaching and learning activities, the working environment (especially indoor air quality) in which students and pupils spend a great deal of time in education-al institutions has been changing. Therefore, special attention must be paid to in-door air quality and comfort. It is of great importance to maintain indoor air quality in an object, such as information technology classrooms, where a large number of students spend long periods of time. Poor indoor environment can ne-gatively affect scholarly performances and cause discomfort and poor work per-formance. The problem of indoor air quality in educational institutions can be more serious than in other types of objects, because of the higher concentration of students and information technology equipment. This paper analyzes the changes in air quality in an information technology classrooms, when occupied with students, for the period from March to April. The changes of indoor air tem-perature, relative humidity, and carbon dioxide concentration are monitored in the classroom, as well as outdoor temperature and relative humidity. Several cases are studied: the classroom with closed windows and doors (closed class-room), the classroom with natural ventilation, the classroom cooled with a split system (cooled classroom). Responses of students are followed for each case. The analysis is performed based on the measurement results and numerical simula-tions using the computational fluid dynamics package, and measures are pro-posed to improve the indoor air quality in the considered classroom