RISS 검색 - 학위논문 상세보기

다국어 초록 (Multilingual Abstract)

Recently, fine dust was classified as a Group 1 carcinogen, so global interest in the danger it poses is increasing. Fine dust is more dangerous to the health of children whose respiratory systems are still developing than to healthy adults, so national efforts are being made to reduce fine dust levels in schools. The Ministry of Education implemented air quality management standards in the School Health Act of 2006, suggested countermeasures against high concentrations of fine dust in schools, and provided air purifiers for each classroom nationwide. Recently, academics and parents are increasingly calling for improvements to the overall air quality in schools, including not only fine dust but also carbon dioxide. In this study, I present a mechanical system that can improve schools’ air quality.
This dissertation makes three major contributions. The first contribution is that it presents the efficacy of using air curtains to block the inflow of fine dust into schools both in the laboratory and in three schools over a long period of time.
The second contribution is that it discusses air quality improvement methods for different places in schools. First, the airtightness of classrooms in schools was analyzed. Air quality improved in both general classrooms and special rooms. With regard to special classrooms, science classrooms’ air quality was affected by the use of chemicals, technology and housework management classrooms’ air quality was affected by fine dust generated during cooking, and food service classrooms’ air quality was affected by fine dust inflows due to doors to the outside always being open.
The third contribution is that it presents a plan for how classroom equipment can be operated. It discusses why ventilation should be prioritized over using air purifiers in existing schools and how to improve air quality without excessive noise, which has become an issue recently. The effectiveness of this plan was tested in schools.
This dissertation presents a plan for how to mechanically improve school air quality. Its key contents are how to block the inflow of fine dust, how to improve the air quality of different types of rooms in schools, and a plan for operating mechanical air quality improvement systems.
I hope that this thesis will be used by schools across the country to improve their air quality for their students’ benefit.

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목차 (Table of Contents)

TABLE OF CONTENTS i
LIST OF TABLES iv
LIST OF FIGURES vii
NOMENCLATURE xii
ABSTRACT xiii

TABLE OF CONTENTS i
LIST OF TABLES iv
LIST OF FIGURES vii
NOMENCLATURE xii
ABSTRACT xiii
CHAPTER I Introduction 1
CHAPTER II The research scope and methodology 7
2.1 Strategy of existing school air environment improvement 8
2.2 Prior research analysis. 12
2.3 Research scope 17
CHAPTER III The effect of air curtains on fine dust 21
3.1 Overview 22
3.2 Methods 24
3.2.1 Air curtain performance experiment 24
3.2.2 Air curtain effect field experiment 28
3.2.3 Evaluating air curtain blocking effectiveness by indoor-outdoor pressure differences through CFD 31
3.3 Results and discussion 36
3.3.1 Air curtain performance experiment 36
3.3.2 Air curtain effectiveness field experiment 42
3.3.3 CFD simulation analysis 44
3.4 Conclusions 52
CHAPTER IV Fine dust removal method for classroom 54
4.1 Improvement of the existing school general classroom 55
4.1.1 Overview 55
4.1.2 Methods 56
4.1.3 Results and Discussion 58
4.2 Improvement of the existing school special classroom 63
4.2.1 Overview 63
4.2.2 Methods 65
4.2.2.1 Technical & housework room 65
4.2.2.2 Science room 65
4.2.2.3 Cafeteria 66
4.2.3 Results and discussion 68
4.2.3.1 Technical & housework room 68
4.2.3.2 Science room 72
4.2.3.3 Cafeteria 77
CHAPTER V Operation and evaluation after mechanical systems improvement 81
5.1 Ventilation equipment and air purifier operation 82
5.1.1 Overview 82
5.1.2 Methodology 85
5.1.2.1 Normalization 85
5.1.2.2 Simulation conditions 87
5.1.3 Results and discussion 93
5.1.3.1 Annual data analysis 93
5.1.3.2 Outdoor PM2.5 levels are 75μg/m3 98
5.1.4 Conclusions 103
5.2 Suggestions for an operating method considering the noise of air purifiers and HRV in an old school. 108
5.2.1 Overview 108
5.2.2 Methodology 115
5.2.2.1 Step 1: Experimental target setting 115
5.2.2.2 Step 2: Field measurement 120
5.2.2.3 Step 3: Simulation 123
5.2.3 Results and Discussion 136
5.2.3.1 Simulation Verification 136
5.2.3.2 Simulation Results 138
5.2.3.3 Post-operation evaluation 151
5.2.4 Conclusions 154
CHAPTER VI Conclusion 157
VITA 160
국문요약 161
*BIBLIOGRAPHY* 164

참고문헌 (Reference)

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