ISO 15927-5-2004 amd1-2011 (2012) PDF

Full title and description

ISO 15927-5:2004/Amd 1:2011 (corrected version June 2012) — Hygrothermal performance of buildings — Calculation and presentation of climatic data — Part 5: Data for design heat load for space heating — Amendment 1. The amendment updates/clarifies the original 2004 part to refine data and presentation used for determining design heating loads.

Abstract

Specifies definitions, methods of calculation and methods of presentation of climatic data to be used in determining the design heat load for space heating in buildings — including winter external design air temperatures and, where appropriate, relevant wind speed and direction. The standard notes that ground heat loss calculations are dealt with in ISO 13370.

General information

• Status: Published (base standard and Amendment 1 published; base standard under periodic review by ISO).
• Publication date: Base standard published November 2004; Amendment 1 published 8 November 2011 (corrected versions issued June 2012).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 07.060 (Meteorology); 91.120.10 (Thermal insulation of buildings / Hygrothermal performance).
• Edition / version: Edition 1 (2004) with Amendment 1 (2011) — corrected 2012.
• Number of pages: Base standard: 6 pages; Amendment 1: 1 page (amendment document); combined content typically referenced as the 2004 text plus the amendment.

Scope

Defines the climatic data and presentation conventions required for calculating the design heat load for space heating of buildings. This includes the methods to derive winter external design air temperatures and associated wind parameters that influence heat-loss calculations; it explicitly points to ISO 13370 for ground heat-loss methods. The amendment provides clarifications and corrections to the original 2004 text.

Key topics and requirements

• Definition and selection of climatic design parameters used for space-heating load calculations (winter design air temperatures).
• Methods for calculation and statistical presentation of design temperature values and associated wind data (speed and direction) where relevant.
• Presentation formats for climatic data so they can be applied consistently in heat-load calculations.
• Reference to complementary standards (for example ISO 13370 for ground heat loss) where specific heat-loss mechanisms are addressed outside this part.
• Editorial/technical corrections and clarifications introduced by Amendment 1 (2011), with corrected text issued in 2012.

Typical use and users

Used by building services engineers, HVAC designers, energy modellers, meteorological data compilers, standards committees, and regulatory authorities to obtain consistent climatic design parameters for heating-load calculations and for harmonising input data across software and calculation methods. The standard is referenced when preparing national/regional design data sets and by those applying ISO-compliant calculation procedures.

Related standards

Belongs to the ISO 15927 series (Hygrothermal performance of buildings — Calculation and presentation of climatic data). Related parts include: ISO 15927-1 (Monthly means of single meteorological elements), ISO 15927-2 (Hourly data for design cooling load), ISO 15927-3 (Driving‑rain index), ISO 15927-4 (Hourly data for annual energy use assessment), ISO 15927-6 (Accumulated temperature differences / degree‑days), and other parts in the series. These complementary parts provide data and procedures for cooling loads, moisture/rain indices and annual energy assessments.

Keywords

hygrothermal performance; climatic data; design heat load; space heating; winter design temperature; wind data; ISO 15927; amendment; design conditions.

FAQ

Q: What is this standard?

A: It is Part 5 of the ISO 15927 series, giving definitions, calculation methods and presentation formats for climatic data used to determine the design heat load for space heating; Amendment 1 (2011, corrected 2012) provides updates and corrections to the original 2004 text.

Q: What does it cover?

A: It covers the climatic design parameters (notably winter external design air temperatures and relevant wind information), the methods to compute them and how to present the resulting data so they can be used consistently in heat-load calculations; it refers to ISO 13370 for ground heat-loss calculations.

Q: Who typically uses it?

A: HVAC and building services engineers, energy modellers, meteorological data providers, standards bodies and regulators who need standardised input data for heating-load calculations and related building-energy assessments.

Q: Is it current or superseded?

A: The base part (ISO 15927-5:2004) and its Amendment 1 (2011, corrected 2012) are published and available; ISO maintains review cycles for its standards — the base standard has been subject to periodic review and the ISO record indicates ongoing review activity (published and under regular review at ISO). Users should check with the national/official standards body or ISO catalogue for the very latest status before relying on the standard for regulatory compliance.

Q: Is it part of a series?

A: Yes — it is one part of the ISO 15927 series (Hygrothermal performance of buildings — Calculation and presentation of climatic data); other parts address monthly and hourly climate data, cooling-load data, driving‑rain index, degree‑days and related topics.

Q: What are the key keywords?

A: Hygrothermal, climatic data, design heat load, space heating, winter design temperature, wind speed, presentation of data, ISO 15927, amendment.