Guide to Implementing Electrified Heat in Domestic Properties Edition 2022 (PDF)

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About the book:

Publisher: IET
Place of Publication: United Kingdom
Pages: 168
Edition: 2022
Language: English
Size: 85 Mb

This guide provides practical information to all those involved in designing, installing, operating and maintaining heating systems focusing on how to correctly apply electrified heating on current and future projects.

It focuses on all forms of electrified heat (including heat pumps) for heating, but also other related approaches and technologies such as heat recovery, renewables and energy storage. It also draws on other areas such as building fabric, thermal comfort, electrical system considerations and the complex issue of using electrified heat to generate domestic hot water.

Content:

Acknowledgements 7
Scope and purpose 9
Foreword 11
Section 1 Introduction 13
1.1 How do we heat homes in the UK? 13
1.2 Why the UK wants to stop using natural gas for heating 15
1.3 How climate change is affecting the UK 16
1.4 Climate Change Act 2008 (and 2019 amendment) 16
1.5 What are the UK's CO2 emissions? 16
1.6 The factors determining the demand for heat 17
1.7 How might the demand for heat change in the future? 19
1.8 How can we decarbonize domestic heat? 21
1.9 Low-carbon heating for large-scale deployment 23
1.10 Economics 26
1.11 Summary 27
Section 2 Fabric and comfort considerations 29
2.1 Building orientation and solar gains 29
2.2 Fabric thermal properties and air leakage 34
2.3 Thermal comfort 43
2.4 Heat loss calculations 46
2.5 Procedure for heat loss calculation 48
2.6 Example heat loss calculation 50
2.7 The performance gap 51
2.8 Thermal modelling software 51
2.9 Summary 52
Section 3 Heat pumps 53
3.1 Heat pump theory 53
3.2 Heat pump operating factors 60
3.3 Heat pump efficiency 64
3.4 Heat pump practicalities 69
3.5 Summary 72
Section 4 Hot water considerations 73
4.1 Introduction 73
4.2 Direct electric hot water production 76
4.3 Heat pump hot water production 77
4.4 Renewable energy hot water production 79
4.5 Summary 81
Sections Selecting electrified heat systems 83
5.1 Introduction 83
5.2 Regulations and standards 83
5.3 Direct electric heating systems 85
5.4 Heat pump systems 90
5.5 Heat pump wet systems 93
5.6 Selecting controls 95
5.7 Operation and maintenance 100
5.8 Summary 102
Section 6 Electrical supply considerations 103
6.1 Electrified heat and supply capacity 103
6.2 Engaging with DNOs and suppliers 111
6.3 Electrified heat and smart grids 114
6.4 Smart integrated design 115
6.5 Summary 120
Section 7 The businesscase for electrified heat 121
7.1 Introduction 121
7.2 Business case information required 124
7.3 Business case evaluation methodologies 126
7.4 Example scenario 128
7.5 Summary 134
Section 8 Future perspectives: Heat as a Service 135
8.1 Case study context 135
8.2 Pathways to decarbonizing heat 135
8.3 Heat Plans 137
8.4 User feedback 140
8.5 Fuel poverty 141
8.6 Next steps 142
8.7 Summary 142
Appendix A: Abbreviations 143
Appendix B: References 145
Appendix C: Standards 147
Appendix D: Schematics 149
Index 159

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