ISO 52032-1:2022
Energy performance of buildings — Energy requirements and efficiencies of heating, cooling and domestic hot water (DHW) distribution systems — Part 1: Calculation procedures
This document specifies the energy performance calculation of water-based distribution systems for space heating, space cooling and domestic hot water (DHW).
This document is applicable to the heat flux from the distributed water to the space and the auxiliary energy of the related pumps.
The heat flux and the auxiliary energy for pumps can be calculated for any time interval (hour, month and year). The input and output data are mean values of the time interval.
Instead of calculating the energy performance of water-based distribution systems, it is also possible to use measurements as long as they follow the time intervals of the whole performance calculation or can be divided into those time intervals.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols, subscripts and abbreviated terms
4.1 Symbols
4.2 Subscripts
4.3 Abbreviated terms
5 General description of the method — Output of the method
6 Calculation of heat losses and auxiliary energy of distribution systems
6.1 Output data
6.2 Calculation time intervals
6.3 Input data
6.3.1 Product technical data (quantitative)
6.3.2 Configuration and system design data
6.3.3 Operating or boundary conditions
6.3.4 Constants and physical data
6.3.5 Input data from Annex A (with default choices in Annex B)
6.4 Calculation procedure
6.4.1 Applicable time interval
6.4.2 Operating conditions calculation
6.4.3 Heat loss calculation
6.4.4 Recoverable energy
6.4.5 Auxiliary energy calculation
6.4.6 Auxiliary energy for ribbon heater
6.4.7 Recoverable and recovered auxiliary energy
6.4.8 Lengths of pipes
7 Quality control
8 Conformance check
Annex A (normative) Input and method selection data sheet — Template
Annex B (informative) Input and method selection data sheet — Default choices
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols, subscripts and abbreviated terms
4.1 Symbols
4.2 Subscripts
4.3 Abbreviated terms
5 General description of the method — Output of the method
6 Calculation of heat losses and auxiliary energy of distribution systems
6.1 Output data
6.2 Calculation time intervals
6.3 Input data
6.3.1 Product technical data (quantitative)
6.3.2 Configuration and system design data
6.3.3 Operating or boundary conditions
6.3.4 Constants and physical data
6.3.5 Input data from Annex A (with default choices in Annex B)
6.4 Calculation procedure
6.4.1 Applicable time interval
6.4.2 Operating conditions calculation
6.4.3 Heat loss calculation
6.4.4 Recoverable energy
6.4.5 Auxiliary energy calculation
6.4.6 Auxiliary energy for ribbon heater
6.4.7 Recoverable and recovered auxiliary energy
6.4.8 Lengths of pipes
7 Quality control
8 Conformance check
Annex A (normative) Input and method selection data sheet — Template
Annex B (informative) Input and method selection data sheet — Default choices
Bibliography