Building automation – impact on energy efficiency - Siemens ...

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Building automation – impact on energy efficiency - Siemens ...

Contents

1 Introduction .............................................................................................5

1.1 Use, targets and benefits ..........................................................................5

1.2 What constitutes energy efficiency? .........................................................6

2 Global situation: energy and climate....................................................7

2.1 CO 2 emissions and global climate ............................................................7

2.2 Primary energy consumption in Europe....................................................8

2.3 Turning the tide – a long-term process .....................................................8

2.4 Reduce energy usage in buildings............................................................9

2.5 Siemens contribution to energy savings ................................................. 11

3 ong>Buildingong> ong>automationong> and control system standards.........................13

3.1 EU measures ..........................................................................................13

3.2 The standard EN 15232..........................................................................17

3.3 eu.bac certification ..................................................................................19

3.4 Standardization benefits..........................................................................19

4 The EN 15232 standard in detail..........................................................20

4.1 List of relevant building ong>automationong> and control functions......................23

4.2 ong>Buildingong> ong>automationong> and control efficiency classes ................................60

4.2.1 Procedure for meeting an efficiency class for BACS projects ................72

4.3 Calculating the ong>impactong> of BACS and TBM on a building’s energy

efficiency .................................................................................................74

4.3.1 Introduction .............................................................................................74

4.3.2 Factor-based calculation procedure of the BACS ong>impactong> on the energy

performance of buildings (BACS factor method) ....................................77

4.3.3 Savings potential of various profiles for the different building types.......79

4.4 Overall BACS efficiency factors ..............................................................84

4.4.1 Overall BACS efficiency factors for thermal energy................................85

4.4.2 Overall BACS efficiency factors for electrical energy .............................86

4.4.3 Reflection of the profile on BACS efficiency factors ...............................87

4.4.4 Sample calculation for an office building.................................................88

4.5 Detailed BACS efficiency factors ............................................................89

4.5.1 Detailed BACS efficiency factors for heating and cooling......................90

4.5.2 Detailed BAC efficiency factor for DHW..................................................91

4.5.3 Detailed BAC efficiency factor for lighting and auxiliary energy ............92

4.6 Guideline for using BACS for EMS .........................................................92

5 eu.bac certification .............................................................................101

5.1 Goal and purpose of eu.bac..................................................................101

5.2 Customer benefits resulting from eu.bac Cert .....................................104

6 Energy efficiency from Siemens .......................................................106

6.1 Products and systems...........................................................................106

6.1.1 Desigo ...................................................................................................106

6.1.2 Synco – for enhanced comfort and energy efficiency........................... 111

6.1.3 GAMMA – building control technology.................................................. 113

6.2 Energy efficiency tools .......................................................................... 115

6.2.1 Energy Performance Classification (EPC) tool ..................................... 115

6.2.2 Energy Efficiency Calculation (EEC) tool.............................................. 116

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