ISO 17772-1-2017 PDF

Full title and description

Energy performance of buildings — Indoor environmental quality — Part 1: Indoor environmental input parameters for the design and assessment of energy performance of buildings. This international standard defines the indoor-environment input parameters (thermal environment, indoor air quality, lighting and acoustics) used when calculating or assessing the energy performance of buildings for spaces occupied by people.

Abstract

ISO 17772-1:2017 specifies requirements and recommended values for indoor environmental parameters to be used as input for building energy-performance calculations and for the design of building systems. It covers thermal criteria (including draught, radiant temperature asymmetry, vertical temperature differences and floor-surface temperature), indoor air quality, lighting and acoustic criteria, and includes standardized occupancy schedules and categories of criteria for use in energy calculations. The document provides input parameters rather than design methods and may be used in national calculation methods.

General information

• Status: Published.
• Publication date: June 2017.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 91.120.10 (Thermal insulation of buildings).
• Edition / version: Edition 1 (2017).
• Number of pages: 60 pages (ISO published edition).

Scope

Applies where indoor-environment criteria are set by human occupancy and where production or process activities do not dominate indoor conditions. ISO 17772-1 sets criteria and input parameters for thermal environment, indoor air quality, lighting and acoustics that are suitable for use in energy-performance calculations and for specifying building-system design inputs; it does not prescribe specific design procedures.

Key topics and requirements

• Standardized indoor-environment input parameters for energy calculations (thermal, IAQ, lighting, acoustics).
• Thermal criteria including set-points, draught limits, radiant temperature asymmetry, vertical air temperature differences and floor surface temperatures.
• Indoor air quality parameters (occupant-based schedules and indicative ventilation/pollutant criteria for calculations).
• Lighting input assumptions (design illuminances, daylighting conditions and schedules used in energy models).
• Acoustic input guidelines for background/noise levels when relevant to occupant comfort in energy assessments.
• Occupancy schedules and categories of indoor-environment criteria to ensure consistent input across calculations and national methods.
• Note: the standard supplies input parameters and criteria but does not mandate design or construction methods.

Typical use and users

Used by building energy modellers, HVAC and lighting designers, building-services engineers, energy assessors, researchers and regulators who need consistent indoor-environment input parameters for energy performance calculations and comparative assessments. It is also referenced by national calculation methods and standards bodies when defining default indoor-environment assumptions.

Related standards

ISO/TR 17772-2:2018 (guidance on using the indoor-environment input parameters) is the companion technical report that provides methods for applying and evaluating the parameters in practice. Other regional and international documents referenced for criteria include the EN 16798 series and related indoor-environment standards and guidance documents.

Keywords

energy performance of buildings, indoor environmental quality, thermal environment, indoor air quality, lighting, acoustics, occupancy schedules, input parameters, building energy modelling, HVAC, energy calculation.

FAQ

Q: What is this standard?

A: ISO 17772-1:2017 is an international standard that specifies indoor-environment input parameters (thermal, IAQ, lighting, acoustics and occupancy schedules) for building energy-performance calculations and design inputs.

Q: What does it cover?

A: It covers the definition and recommended values of indoor-environment parameters used as inputs to energy simulations and assessments, including thermal comfort factors (draught, radiant asymmetry, vertical temperature differences, floor temperature), indoor air-quality assumptions, lighting and acoustic input data, and occupancy schedules. It provides input criteria but not specific design methods.

Q: Who typically uses it?

A: Building energy modellers, HVAC and lighting designers, energy assessors, researchers, standards developers and regulators who require harmonized indoor-environment inputs for energy calculations and policy or compliance frameworks.

Q: Is it current or superseded?

A: ISO 17772-1:2017 was published in June 2017 and, according to the ISO lifecycle information, the edition was reviewed and confirmed in 2023; the published version remains current but the work programme indicates revision activity in related areas. Users should check with national standards bodies or ISO for the very latest status before formal adoption.

Q: Is it part of a series?

A: Yes — it is Part 1 of the ISO 17772 series (indoor environmental input parameters). A companion technical report, ISO/TR 17772-2:2018, provides guidance on using the parameters in assessments.

Q: What are the key keywords?

A: Energy performance, indoor environmental quality (IEQ), thermal comfort, indoor air quality (IAQ), lighting, acoustics, occupancy schedule, input parameters, building energy modelling.