ISO/TR 52016-2:2017
Energy performance of buildings — Energy needs for heating and cooling, internal temperatures and sensible and latent heat loads — Part 2: Explanation and justification of ISO 52016-1 and ISO 52017-1
ISO/TR 52016-2:2017 contains information to support the correct understanding and use of ISO 52016‑1 and ISO 52017‑1.
These documents give calculation methods for the assessment of:
- the (sensible and latent) energy load and need for heating and cooling, based on hourly calculations;
- the (sensible and latent) energy need for heating and cooling, based on monthly calculations (ISO 52016‑1);
- the internal temperature, based on hourly calculations; and
- the design (sensible and latent) heating and cooling load, based on hourly calculations.
ISO/TR 52016-2:2017 does not contain any normative provisions.
NOTE A description of the rationale behind the reorganization of the cluster of strongly related and partly overlapping ISO and CEN standards is given in Annex H.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols, subscripts and abbreviations
4.1 Symbols
4.2 Subscripts
4.3 Abbreviations
5 Brief description of the method(s) and routing
5.1 Output of the method
5.1.1 Reference hourly method in ISO 52017‑1
5.1.2 Hourly method in ISO 52016‑1
5.1.3 Monthly method in ISO 52016‑1
5.1.4 Overall and partial energy performance
5.2 General description of the methods in ISO 52016‑1 and ISO 52017‑1
5.2.1 Hourly calculation procedures in ISO 52016‑1 and ISO 52017‑1
5.2.2 The hourly method in ISO 52017‑1
5.2.3 The hourly method in ISO 52016‑1
5.2.4 Monthly calculation procedures in ISO 52016‑1
5.2.5 Other differences between ISO 52016‑1 and ISO 13790:2008 which it supersedes
5.2.6 Input data and assumptions for hourly and monthly method in ISO 52016‑1
5.2.7 Choices between methods in ISO 52016‑1
6 Calculation method in ISO 52016‑1
6.1 Output data
6.1.1 General data on the assessed object and application
6.1.2 Calculated data
6.2 Calculation time intervals and calculation period
6.3 Input data
6.3.1 Source of data - General
6.3.2 Deviating subscripts
6.3.3 General data on the assessed object and application
6.3.4 Geometrical characteristics
6.3.5 Thermophysical parameters of the building and building elements
6.3.6 Loops between input and output variables
6.3.7 Operating and boundary conditions
6.3.8 Constants and physical data
6.3.9 Input data from Annex A (Annex B)
6.4 Zoning of the assessed object
6.4.1 General
6.4.2 Thermal zoning procedures
6.4.3 Size of the thermal zones
6.4.4 Heat exchange between thermal zones and service areas
6.4.5 Adjacent thermally unconditioned zones
6.4.6 Residential buildings or building units, adjustment for spatial average temperature
6.4.7 Thermally coupled or uncoupled zones
6.5 Hourly calculation procedures
6.5.1 Principle
6.5.2 Applicable time interval and calculation period
6.5.3 Assumptions and specific conditions
6.5.4 Calculation procedure
6.5.5 Calculation of (sensible) heating and cooling loads and temperatures
6.5.6 Overall energy balance of a thermal zone
6.5.7 Type of construction dependent properties of the nodes
6.5.8 Thermal transmission properties
6.5.9 Temperature of adjacent thermally unconditioned zone
6.5.10 Ventilation heat transfer coefficient, supply temperature and moisture content
6.5.11 Thermal capacity of the internal environment of the thermal zone
6.5.12 Internal heat gains
6.5.13 Solar gains
6.5.14 Moisture content and latent heat load
6.5.15 Calculation of key monthly data from hourly output
6.6 Monthly calculation procedures
6.6.1 Principle
6.6.2 Applicable time interval and calculation period
6.6.3 Assumptions
6.6.4 Energy need for space heating and cooling
6.6.5 Heat transfer by transmission
6.6.6 Heat transfer by ventilation
6.6.7 Internal heat gains
6.6.8 Solar heat gains
6.6.9 Internal effective heat capacity of a zone
6.6.10 Utilization factors
6.6.11 Calculation temperature and intermittency modes
6.6.12 Corrections for intermittency
6.6.13 Overheating indicator
6.6.14 Length of the heating and cooling season for operation of season-length-dependent provisions
6.6.15 Humidification and dehumidification
7 Quality control in ISO 52016‑1
7.1 Calculation report
7.2 Hourly method: verification cases
7.2.1 Choice for BESTEST cases
7.2.2 Description of the verification test cases
7.2.3 Results of the verification test cases
7.2.4 Comparison with available BESTEST results of other programs
7.2.5 Limited scope
7.2.6 Specific deviations allowed
7.2.7 Availability of the data file with hourly values
7.2.8 More details on description of the verification test cases
7.2.9 Results of comparison with “reference” programs
7.2.10 Peak hourly loads
7.3 Hourly method: validation in case of specific alternative calculation procedures
7.4 Specific validation cases
7.4.1 Heat transfer through ground floor
7.4.2 Solar shading
8 Compliance check in ISO 52016‑1
9 Worked out examples on ISO 52016‑1
9.1 Example 1
9.1.1 Description
9.1.2 Description of construction elements of envelope
9.1.3 Calculation details
9.1.4 Remarks and comments
9.2 Example 2
9.2.1 Description
9.2.2 Description of construction elements of envelope
9.2.3 Other data
9.2.4 Calculation details
9.2.5 Remarks and comments
10 Validation of the calculation procedures
Annex A (informative) ISO 52016‑1: Input and method selection data sheet — Template
Annex B (informative) ISO 52016-1: Input and method selection data sheet — Default choices
Annex C (informative) ISO 52016-1: Regional references in line with ISO Global relevance policy
Annex D (informative) ISO 52016-1: Multi-zone calculation with thermal coupling between zones
Annex E (informative) ISO 52016-1: Heat transfer and solar heat gains of windows and special elements
Annex F (informative) ISO 52016-1: Calculation of solar shading reduction factors
Annex G (informative) ISO 52016-1: Dynamic transparent building elements
Annex H (informative) Rationale behind reorganization of suite of standards
Annex I (informative) Discussion on the hourly versus the monthly calculation methods in ISO 52016-1
Annex J (informative) Accuracy of the methods in ISO 52016-1
Annex K (informative) Explanation and derivation of monthly utilization factors
Annex L (informative) Calculation examples
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols, subscripts and abbreviations
4.1 Symbols
4.2 Subscripts
4.3 Abbreviations
5 Brief description of the method(s) and routing
5.1 Output of the method
5.1.1 Reference hourly method in ISO 52017‑1
5.1.2 Hourly method in ISO 52016‑1
5.1.3 Monthly method in ISO 52016‑1
5.1.4 Overall and partial energy performance
5.2 General description of the methods in ISO 52016‑1 and ISO 52017‑1
5.2.1 Hourly calculation procedures in ISO 52016‑1 and ISO 52017‑1
5.2.2 The hourly method in ISO 52017‑1
5.2.3 The hourly method in ISO 52016‑1
5.2.4 Monthly calculation procedures in ISO 52016‑1
5.2.5 Other differences between ISO 52016‑1 and ISO 13790:2008 which it supersedes
5.2.6 Input data and assumptions for hourly and monthly method in ISO 52016‑1
5.2.7 Choices between methods in ISO 52016‑1
6 Calculation method in ISO 52016‑1
6.1 Output data
6.1.1 General data on the assessed object and application
6.1.2 Calculated data
6.2 Calculation time intervals and calculation period
6.3 Input data
6.3.1 Source of data - General
6.3.2 Deviating subscripts
6.3.3 General data on the assessed object and application
6.3.4 Geometrical characteristics
6.3.5 Thermophysical parameters of the building and building elements
6.3.6 Loops between input and output variables
6.3.7 Operating and boundary conditions
6.3.8 Constants and physical data
6.3.9 Input data from Annex A (Annex B)
6.4 Zoning of the assessed object
6.4.1 General
6.4.2 Thermal zoning procedures
6.4.3 Size of the thermal zones
6.4.4 Heat exchange between thermal zones and service areas
6.4.5 Adjacent thermally unconditioned zones
6.4.6 Residential buildings or building units, adjustment for spatial average temperature
6.4.7 Thermally coupled or uncoupled zones
6.5 Hourly calculation procedures
6.5.1 Principle
6.5.2 Applicable time interval and calculation period
6.5.3 Assumptions and specific conditions
6.5.4 Calculation procedure
6.5.5 Calculation of (sensible) heating and cooling loads and temperatures
6.5.6 Overall energy balance of a thermal zone
6.5.7 Type of construction dependent properties of the nodes
6.5.8 Thermal transmission properties
6.5.9 Temperature of adjacent thermally unconditioned zone
6.5.10 Ventilation heat transfer coefficient, supply temperature and moisture content
6.5.11 Thermal capacity of the internal environment of the thermal zone
6.5.12 Internal heat gains
6.5.13 Solar gains
6.5.14 Moisture content and latent heat load
6.5.15 Calculation of key monthly data from hourly output
6.6 Monthly calculation procedures
6.6.1 Principle
6.6.2 Applicable time interval and calculation period
6.6.3 Assumptions
6.6.4 Energy need for space heating and cooling
6.6.5 Heat transfer by transmission
6.6.6 Heat transfer by ventilation
6.6.7 Internal heat gains
6.6.8 Solar heat gains
6.6.9 Internal effective heat capacity of a zone
6.6.10 Utilization factors
6.6.11 Calculation temperature and intermittency modes
6.6.12 Corrections for intermittency
6.6.13 Overheating indicator
6.6.14 Length of the heating and cooling season for operation of season-length-dependent provisions
6.6.15 Humidification and dehumidification
7 Quality control in ISO 52016‑1
7.1 Calculation report
7.2 Hourly method: verification cases
7.2.1 Choice for BESTEST cases
7.2.2 Description of the verification test cases
7.2.3 Results of the verification test cases
7.2.4 Comparison with available BESTEST results of other programs
7.2.5 Limited scope
7.2.6 Specific deviations allowed
7.2.7 Availability of the data file with hourly values
7.2.8 More details on description of the verification test cases
7.2.9 Results of comparison with “reference” programs
7.2.10 Peak hourly loads
7.3 Hourly method: validation in case of specific alternative calculation procedures
7.4 Specific validation cases
7.4.1 Heat transfer through ground floor
7.4.2 Solar shading
8 Compliance check in ISO 52016‑1
9 Worked out examples on ISO 52016‑1
9.1 Example 1
9.1.1 Description
9.1.2 Description of construction elements of envelope
9.1.3 Calculation details
9.1.4 Remarks and comments
9.2 Example 2
9.2.1 Description
9.2.2 Description of construction elements of envelope
9.2.3 Other data
9.2.4 Calculation details
9.2.5 Remarks and comments
10 Validation of the calculation procedures
Annex A (informative) ISO 52016‑1: Input and method selection data sheet — Template
Annex B (informative) ISO 52016-1: Input and method selection data sheet — Default choices
Annex C (informative) ISO 52016-1: Regional references in line with ISO Global relevance policy
Annex D (informative) ISO 52016-1: Multi-zone calculation with thermal coupling between zones
Annex E (informative) ISO 52016-1: Heat transfer and solar heat gains of windows and special elements
Annex F (informative) ISO 52016-1: Calculation of solar shading reduction factors
Annex G (informative) ISO 52016-1: Dynamic transparent building elements
Annex H (informative) Rationale behind reorganization of suite of standards
Annex I (informative) Discussion on the hourly versus the monthly calculation methods in ISO 52016-1
Annex J (informative) Accuracy of the methods in ISO 52016-1
Annex K (informative) Explanation and derivation of monthly utilization factors
Annex L (informative) Calculation examples
Bibliography