1. Introduction..............................................................................................................................................................1
1.1 Problem Statement..............................................................................................................................................3
1.2 Research’s Aim and Scope...................................................................................................................................3
1.3 Research’s Objectives..........................................................................................................................................4
1.4 Theoretical Background......................................................................................................................................4
1.5 Dissertation Overview.........................................................................................................................................7
2. Literature Review.....................................................................................................................................................7
3. Design Methodology................................................................................................................................................13
3.1 Building Heat Load Analysis.............................................................................................................................14
3.2 Load Diversity..................................................................................................................................................14
3.3 Laboratory Testing............................................................................................................................................15
3.4 Example Laboratory Methodology....................................................................................................................16
3.5 Simulation and Validation Methodology............................................................................................................17
4. Model Development and Design Implementation.....................................................................................................18
4.1 Design Analysis.................................................................................................................................................18
4.2 Detail Design.....................................................................................................................................................22
4.2.1 The VRF-HP System Model......................................................................................................................22
4.2.2 The VRF-HR System Model.....................................................................................................................23
5. Concept Design.......................................................................................................................................................26
5.1 Variable Air Flow Heat Pump Computer Model................................................................................................26
5.2 Heating Operation............................................................................................................................................30
5.3 Implementation of Model in EnergyPlus............................................................................................................31
5.4 Model Development Workflow using Energy Plus.............................................................................................32
5.5 Prototyping and Model Validation.....................................................................................................................34
6. Comparison of VRF Systems...................................................................................................................................35
7. Advantages and Disadvantages of VRF System........................................................................................................38
7.1 Advantages of VRF System...............................................................................................................................38
7.2 Disadvantages of VRF System...........................................................................................................................41
8. Results and Discussion............................................................................................................................................42
9. Conclusions and Recommendations.........................................................................................................................46

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A Report on Masters of Engineering: Variable Refrigerant Flow System (VRF)

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