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eLibrary > PD ISO/IEC TR 21897:2022 Information technology. Data centres. Impact of the ISO 52000 series on energy performance of buildings >

PD ISO/IEC TR 21897:2022 Information technology. Data centres. Impact of the ISO 52000 series on energy performance of buildings, 2022

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PD ISO/IEC TR 21897:2022 Information technology. Data centres. Impact of the ISO 52000 series on energy performance of buildings, 2022

National foreword
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviated terms [Go to Page]
3.1 Terms and definitions
3.2 Abbreviated terms
3.3 Symbols (variables)
3.4 Symbols (indices)
4 Background, motivation and exclusions [Go to Page]
4.1 Background and motivation
4.2 Exclusions
5 Data centre assessment boundary [Go to Page]
5.1 Data centre boundary in the ISO/IEC 30134 series
5.2 Assessment boundary of the system in the ISO 52000 series
6 General principles of the overarching EPB framework and procedures [Go to Page]
6.1 Output of the method
6.2 General description of the procedures
6.3 General description of the routing
6.4 Types of assessment [Go to Page]
6.4.1 General
6.4.2 Calculated energy performance
6.4.3 Measured overall energy performance and comparison with calculations
7 Assessment of primary or weighted energy performance [Go to Page]
7.1 Weighted overall energy balance
7.2 Primary energy factors
7.3 Weighting factors for exported energy
8 General approach for data centre energy flows [Go to Page]
8.1 Data centre energy flows considered in the ISO/IEC 30134 series
8.2 General energy flows considered in the ISO 52000 series [Go to Page]
8.2.1 General
8.2.2 Electricity and other carriers with exportation
8.2.3 Energy carriers without exportation
8.2.4 Exported heat on-site produced and not included in thermal use of the system
8.3 Data centre energy flows in an EPB approach
9 Impacts of the EPB approach on data centre KPIs [Go to Page]
9.1 Impacts on conversion factors (case of metered energy consumption)
9.2 Impact on power usage effectiveness (PUE — ISO/IEC 30134‑2)
9.3 Impact on the renewable energy factor (REF — ISO/IEC 30134‑3)
9.4 Impact on the energy reuse factor (ERF — ISO/IEC 30134‑6)
9.5 Impact on the excess electrical energy factor (XEEF — ISO/IEC TR 23050)
9.6 Impact on IT equipment energy efficiency for servers (ITEESV — ISO/IEC 30134‑4)
Annex A (informative) Examples of primary energy assessment of a data centre as used for PUE assessment
Annex B (informative) Examples of primary energy assessment of data centre as used for REF assessment [Go to Page]

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PD ISO/IEC TR 21897:2022 Information technology. Data centres. Impact of the ISO 52000 series on energy performance of buildings, 2022

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