MODELING OF HYDRONIC AND ELECTRIC-CABLE SNOW-MELTING

3,39

MB

SYSTEMS FOR PAVEMENTS AND BRIDGE DECKS

178

stron

6385

ID

Oklahoma State University

2002

rok

TABLE OF CONTENTS

Chapter Page

1. INTRODUCTION 1

1.1. Background 1

1.2. Literature Review 2

1.2.1. Steady State Modeling 2

1.2.2. Transient Modeling 12

1.3. Thesis Objective and Scope 45

2. PARAMETRIC STUDY OF SNOW-MELTING SYSTEM 47

2.1. Introduction 47

2.2. Methodology of Parametric Study 50

2.2.1. Organization and Methodology of Parametric Study 50

2.2.2. Methodology of Center Zone Parametric Study 52

2.2.3. Methodology of Edge Zone Parametric Study 57

2.3. Results and Discussion 57

2.3.1. Center Zone Parametric Study 57

2.3.2. Edge Zone Parametric Study 74

2.4. Conclusion of Parametric Study 78

3. MODELING THE BRIDGE DECK BY TRANSFER FUNCTION METHOD 80

3.1. Introduction 80

3.2. Modeling by Transfer Function Method 81

3.2.1. Heat Transfer in Bridge Decks 81

3.2.2. Boundary Conditions 84

3.2.3. Heat Transfer at the Source Location 91

3.3. Implementing in HVACSIM+ Environment 98

3.4. Results and Discussion 99

3.4.1. One Dimensional Comparative Studies 99

3.4.2. Two Dimensional Comparative Studies 112

3.4.3. Error Analysis 115

3.5. Summary 125 - v -

4. VALIDATION OF THE QTF MODEL BY EXPERIMENTAL DATA 127

4.1. Introduction 127

4.2. Previous Work 127

4.3. System Simulation Results and Discussion 131

4.3.1. Thermal Resistance Error 132

4.3.2. Summer Recharge 133

4.3.3. Winter Heating 138

4.4. Summary 152

5. CONCLUSIONS AND RECOMMENDATIONS 154

5.1. Conclusions 154

5.2. Recommendations 156

REFERENCES 158

APPENDIXES 161

Appendix A: Description of the QTF model in TYPAR.DAT 162