바닥 난방시스템의 마스터 열유동특성
- Alternative Title
- Flow and heat transfer characteristics of the Master Joint in a floor heating system
- Abstract
- 한국의 전통 난방 방식인 온돌난방에서, 바닥의 난방 및 배관 방식에 대한 여러 연구가 진행되어 왔다. 본 논문은 히트 파이프나 열사이폰을 이용한 난방방식 을 다루며, 이 난방 시스템의 중요한 부분은 온수관의 온수로부터 히트 파이프 또는 열사이폰으로 열을 전달하는 부위인 마스터 조인트 부분이며, 이 부분에서의 유동 및 열전달 특성에 관하여 논의한다. 기존의 마스터 조인트에 대한 수치 시뮬레이션을 행하여 유동 및 열전달 특성을 파악하고 단점을 개선하여 새로운 마스터 조인트를 제안하였으며, 새 마스터 조인트에 대한 수치 시뮬레이션을 행하여 기존의 마스터 조인트와 유동 및 열전달 특성을 비교하였다.
A traditional Korean heating system in residential homes is a floor heating system, “ondol”. With the development of society, many kinds of floor heating systems were investigated to increase heat transfer to the floor. In this study, a new floor heating system using heat pipes or thermal siphons is discussed. It consists of main pipes where hot water flows, heat pipes or thermal siphons, and master joints where thermal energy of hot water is transferred to the heat pipes or thermal siphons.
In this new floor heating system, one of the most important parts is the master joint. Its shape plays an important role in heat transfer of this system. At first, numerical simulations were carried out to see the flow patterns, temperature distributions of the conventional existing master joint. Then, a new master joint which increases the performance of heat transfer of the floor heating system is proposed. To see the improvement of the new master joint, flow patterns, temperature distributions of two master joint models are compared. Also, in this study, flow characteristics and temperature distributions for several main hot water pipe diameters are shown and discussed to see the effects of main pipe diameter on this floor heating system.
- Issued Date
- 2007
- Awarded Date
- 2007. 2
- Type
- Dissertation
- Keyword
- Master Joint Floor heating system Thermo siphon Heat pipe Numerical simulation 마스터조인트 바닥 난방시스템 열사이폰 히트파이프 수치시뮬레이션
- Publisher
- 부경대학교 대학원
- Affiliation
- 부경대학교 대학원
- Department
- 대학원 기계공학부에너지시스템공학전공
- Advisor
- 권오붕
- Table Of Contents
- CHAPTER 1: INTRODUCTION = 1
1.1 Background of study = 1
1.2 Objectives and outline of the study = 5
CHAPTER 2: REVIEW OF THE MASTER JOINT IN THE FLOOR HEATING SYSTEM = 6
2.1 Introduction to the present master joint model = 6
2.2 Flow patterns and velocity vectors distributions = 8
2.3 Temperature distributions = 11
2.4 Pressure distributions = 16
CHAPTER 3: EVALUATION OF THE EFFECTS OF THE MAIN PIPE DIAMETER = 18
3.1 Introduction to the four types of the main pipe diameter = 18
3.2 Comparisons of the velocity vectors distributions for the four types of the main pipe diameter = 22
3.3 Comparisons of the temperature fields for the four types of the main pipe diameter = 26
3.4 Comparisons of heat transfer for the four types of the main pipe diameter = 29
CHAPTER 4: NEW MODEL OF MASTER JOINT;THE COMPARISONS BETWEEN THE PRESENT MODEL AND THE NEW MODEL = 34
4.1 Introduction to the new master joint model = 34
4.2 Comparisons of the velocities passing through the master joint between the two models = 36
4.3 Comparisons of the temperature fields between the two models = 42
4.4 Comparisons of heat transfer between the two models = 47
CHAPTER 5: CONCLUSIONS = 52
LIST OF REFERENCES = 54
- Degree
- Master
- Appears in Collections:
- 대학원 > 기계공학부-에너지시스템공학전공
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