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Guide F Energy efficiency in buildings (2012)
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Guide F Energy efficiency in buildings (2012)

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A Corrigendum to Guide F has been issued in August 2016 which is available to download here. This makes corrections to pages 20-10 and 11 to Tables 20.14 to 20.17. The Corrigendum has been incorporated in the revised pdf. Future purchasers of the hard copy will receive the Corrigendum with the book. 

Since the last edition of CIBSE Guide F, published in 2004, the UK Government has set a legally binding target to reduce national greenhouse gas emissions. The Government’s latest Carbon Plan sets out specific targets for improving the energy efficiency in new and existing buildings. There have also been significant regulatory changes over the last eight years, including two revisions to Part L of the Building Regulations and the transposition of the Energy Performance of Buildings Directive into UK legislation. The next two revisions of Part L will push for further improvements in energy efficiency to progress towards the Government’s aspiration for all new buildings to be zero carbon by 2019.

This 2012 edition of CIBSE Guide F includes a new section on ‘developing an energy strategy’. This reflects the changes to planning policy, which now include targets for reducing carbon dioxide emissions from new developments and the need to submit a detailed energy strategy report as part of the planning application.

Energy management has moved up the corporate agenda, aided by the work of the Carbon Trust and the implementation of the CRC Energy Efficiency Scheme. Part B of this Guide (covering the operation of the building) has been updated to include more information about carbon management, and the need for improved metering and monitoring.

In addition, the section on energy efficient refurbishment has been expanded in recognition of the pressing need to upgrade the existing building stock and the opportunities to improve performance.

This edition incorporates the new and revised guidance that has been published since 2004. This includes key CIBSE documents and publications by the Carbon Trust and BSRIA. These key references have informed many of the updates and are referenced throughout the Guide.

A new companion document to the Guide, titled Introduction to energy efficiency, is also avalable on the Knowledge Portal that introduces the main Guide and summarises the current policy agenda; the changing role of building services engineers, and the key themes of Guide F.


1 Introduction

1.0 Objectives and scope

1.1 Energy efficiency drivers

1.2 How to use this Guide


Part A: Designing the building energy design checklist

2 The design process

2.0 General

2.1 Stages in the design process

2.2 The design team

2.3 The energy efficient brief

2.4 The design contract

2.5 Equipment selection


3 Developing a design strategy

3.0 General

3.1 Integrating fabric and services

3.2 Integrating services

3.3 Minimising requirements for services

3.4 Integrating human factors



4 Developing an energy strategy

4.0 Energy and low carbon strategy

4.1 Definition of zero carbon

4.2 Building Regulations Approved Document L2

4.3 Planning policy

4.4 Energy strategy reports in support of planning applications

4.5 Hierarchy for developing an energy strategy

4.6 Low and zero carbon technology options

4.7 Low and zero carbon technologies

4.8 Energy metering


5 Concept design

5.0 General

5.1 Site considerations

5.2 Built form

5.3 Services

5.4 Summary



6 Control strategies

6.0 General

6.1 Developing a strategy

6.2 Strategic control functions

6.3 Building energy management systems

6.4 Occupant controls



7 Ventilation and air conditioning design

7.0 General

7.1 Natural ventilation

7.2 Mechanical ventilation and air conditioning

7.3 Efficient air conditioning systems

7.4 Ventilation and air conditioning controls



8 Refrigeration design

8.0 General

8.1 Reducing demand for cooling

8.2 Designing energy efficient systems

8.3 Refrigeration efficiency

8.4 Primary plant

8.5 Distribution systems

8.6 Controls



9 Lighting design

9.0 General

9.1 Design objectives

9.2 Selecting luminaires

9.3 Selecting light sources

9.4 Control gear (ballasts)

9.5 Lighting controls



10 Heating and hot water design

10.0 General

10.1 Primary plant

10.2 Distribution systems

10.3 Controls

10.4 Energy consumption

10.5 Domestic heating



11 Motors and building transportation systems

11.0 General

11.1 Minimising the motor load

11.2 Motor sizing and selection

11.3 Motor drives

11.4 Controlling the motor load

11.5 Building transportation systems


12 Electrical power systems and office equipment

12.0 General

12.1 Large power users

12.2 Office equipment

12.3 Energy consumption

12.4 Heat gains and air conditioning


13 Checking the design

13.0 General

13.1 Checking internal loads and heat gains

13.2 Checking against energy targets

13.3 Checking against environmental targets


14 Commissioning, handover and feedback

14.0 General

14.1 On-site checks

14.2 The commissioning process

14.3 Handover and feedback

14.4 Documenting the building

14.5 Post-occupancy evaluation and feedback



Part B: Operating and upgrading the building — Why buildings fail on energy

15 Managing the building

15.0 General

15.1 Understanding the building

15.2 Developing an energy management strategy

15.3 Management structures

15.4 Occupant involvement



16 Acquisition and refurbishment

16.0 Acquiring a new or existing building

16.1 Refurbishing existing buildings

16.2 Energy efficient refurbishment

16.3 Building Regulations and refurbishment

16.4 Levels of refurbishment

16.5 Refurbishment measures


17 Maintenance and energy efficiency

17.0 General

17.1 Air conditioning inspections

17.2 Planning maintenance

17.3 Maintenance contracts

17.4 Monitoring maintenance

17.5 Checklist for maintenance and energy efficiency



Appendix 17.A1: Checklist for energy related maintenance issues

18 Energy audits and surveys

18.0 General

18.1 Retrofitting energy saving measures

18.2 Developing an energy savings carbon management programme

18.3 What are energy audits and surveys?

18.4 Planning a site survey

18.5 How to carry out energy audits and surveys

18.6 Preliminary audits

18.7 Site surveys

18.8 Assessing energy saving measures

18.9 Analysis and reporting

18.10 Implementing savings

18.11 Specific energy saving measures



Appendix 18.A1: Site survey checklist

19 Benchmarking, monitoring and targeting (M&T)

19.0 General

19.1 The M&T process

19.2 Using energy data

19.3 Setting up an M&T system

19.4 Data quality

19.5 M&T analysis techniques

19.6 Benchmarking end-uses

19.7 Setting targets

19.8 Maintaining the savings



Part C: Benchmarks

20 Energy benchmarks

20.0 General

20.1 Overall building benchmarks

20.2 Detailed component benchmarks

20.3 Detailed end-use benchmarks



Appendix A1: Conversion factors, fuel data and correction of meter readings

Appendix A2: Using consultants and model brief



Revision author and technical editor: David Cheshire (AECOM Sustainability Group)

Reviewers: Richard Brailsford; Simon Burton; Mike Campbell; Lionel Delorme; Zac Grant; Malcolm Hanna; Stephanie Hoffman; Barry Knight; Ted Paszynski; Fabia Pennington; Martin Valentine; Paul Woods; Gina Barney; Ashley Bateson; Vic Crisp; Guy Hundy; Phil Jones; Anastasia Mylona & Andy Stanton

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