ISO 52031-2020 PDF

Full title and description

Energy performance of buildings — Method for calculation of system energy requirements and system efficiencies — Space emission systems (heating and cooling). This ISO International Standard defines a calculation method framework for assessing the energy requirements and efficiencies of space heating and water‑based cooling emission systems used in buildings.

Abstract

This document establishes the required inputs, outputs and the structural links of the calculation method for heating and cooling space emission systems. It is applicable to energy‑performance calculations for heating systems and water‑based cooling space emission sub‑systems.

General information

• Status: Published (International Standard, confirmed).
• Publication date: April 2020 (ISO edition 1, 2020‑04).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 91.040.01 (Buildings in general).
• Edition / version: Edition 1 (2020).
• Number of pages: 47 (ISO published document).

Scope

ISO 52031:2020 defines the information inputs, outputs and the calculation structure for evaluating system energy requirements and system efficiencies of space emission systems. It covers heat emission for space heating and water‑based cooling sub‑systems, and how their energy requirements and efficiencies are calculated within building energy performance assessments. The standard is focused on the emission (terminal) side of heating and cooling systems rather than generation/source technologies.

Key topics and requirements

• Definition of required input data and output results for space emission systems calculation methods.
• Structured calculation links (methodology) to determine system energy requirements and system efficiencies for heating and water‑based cooling emissions.
• Handling of time‑intervals and aggregation for energy and auxiliary energy calculations (for compatibility with related EPB procedures).
• Consistency with the ISO 52000 series approach to building energy performance (aligns emission‑side calculations to distribution/generation parts defined in related parts of the series).

Typical use and users

Practitioners performing building energy performance assessments, energy modelers, HVAC system designers, certification bodies, researchers and national standards bodies use this standard to calculate and report the energy requirements and efficiencies of space emission systems in a consistent, comparable way. It is used when detailed assessment of terminal emission systems (radiators, convectors, underfloor heating, chilled ceilings/panels, etc.) is required as part of an overall EPB (energy performance of buildings) evaluation.

Related standards

ISO 52031 is part of the ISO 52000 family on energy performance of buildings. Closely related documents include ISO 52032‑1:2022 (calculation procedures for water‑based distribution systems for heating, cooling and domestic hot water) and ISO 52000‑1 (overarching EPB assessment framework). The standard is developed under ISO/TC 205 (Building environment design) and is intended to interoperate with other EPB series parts and national adoptions.

Keywords

energy performance, space emission systems, heating, cooling, water‑based cooling, system energy requirements, system efficiencies, ISO 52031, EPB, building energy calculation, ISO/TC 205.

FAQ

Q: What is this standard?

A: ISO 52031:2020 is an international standard that defines a calculation method framework for assessing the energy requirements and efficiencies of space emission systems used for heating and water‑based cooling in buildings.

Q: What does it cover?

A: It covers the inputs, outputs and structure (links) of the calculation method for space emission systems (terminal heating and water‑based cooling), enabling consistent calculation of system energy requirements and system efficiencies as part of building energy performance assessments.

Q: Who typically uses it?

A: Energy modelers, HVAC and building services engineers, certification bodies, researchers, and national standards implementers use the standard when terminal emission system performance needs to be calculated and reported within EPB assessments.

Q: Is it current or superseded?

A: ISO 52031:2020 was published in April 2020 and the ISO record shows the standard was reviewed and confirmed (remains current as the 2020 edition). Users should verify the ISO catalogue or national standards body for the latest review or amendment status before relying on it for compliance work.

Q: Is it part of a series?

A: Yes — it is part of the ISO 52000 series (energy performance of buildings). Related parts include ISO 52000‑1 (general EPB framework) and ISO 52032‑1 (distribution systems calculation procedures), among others.

Q: What are the key keywords?

A: Key keywords are: energy performance, space emission systems, heating, cooling, water‑based cooling, system efficiencies, calculation procedure, ISO 52031, EPB.