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Comparisons of Energy Consumption for Refrigeration in Supermarkets

Contents

Preface

Resume

Summary

Nomenclature

1 Introduction

2 Layout of refrigeration systems

• 2.1 Conventional refrigeration systems
• 2.2 Cascade refrigeration systems
• Figure 2.1. Layout of the isoi-2 and iso-4 systems
• 2.3 Layout of refrigeration section in shop
• Figure 2.3. Layout principle for refrigeration appliances in Shop
• 2.4 System sizes

3 Measuring program

4 Data handling

• 4.1 Data used
• 4.2 Calculation of refrigeration output and power Consumption
• 4.3 Calculation of comparable energy consumptions

5 Comparisons

• 5.1 Measured and calculated power/energy consumption
• 5.2 Mean coefficient of performance and carnot efficiency
• 5.3 Consumption based on mean coefficient of performance
• 5.4 Consumption based on reference shop and actual cop
  • 5.4.1 Specified appliance data/store data
  • 5.4.2 Specified load profile

6 Conclusion

7 Further analysis

8 Project organisation

Appendix A

Appendix B

Appendix C

Appendix D

Appendix E

Appendix F

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Version 1.0 September 2004, © Danish Environmental Protection Agency