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With the rapid development of information technology equipment and its use in   the teaching and learning activities, the working environment (especially   indoor air quality) in which students and pupils spend a great deal of time   in educational institutions has been changing. Therefore, special attention   must be paid to indoor 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 negatively affect scholarly performances and cause   discomfort and poor work performance. 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 temperature, 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 classroom), 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 simulations using   the computational fluid dynamics package, and measures are proposed to   improve the indoor air quality in the considered classroom

Measurement and improvement of indoor air quality in an information technology classroom