EN ISO 15927-1:2003

Hygrothermal performance of buildings - Calculation and presentation of climatic data - Part 1: Monthly means of single meteorological elements (ISO 15927-1:2003)

ISO 15927-1:2003 specifies procedures for calculating and presenting the monthly means of those parameters of climatic data needed to assess some aspects of the thermal and moisture performance of buildings. Numerical values for any locations should be obtained from the meteorological service in the relevant country.
ISO 15927-1:2003 covers the following single climate variables: air temperature; atmospheric humidity; wind speed; precipitation; solar radiation; longwave radiation.
Meteorological instrumentation and methods of observation are not covered; these are specified by the World Meteorological Organisation (WMO).

Wärme- und feuchteschutztechnisches Verhalten von Gebäuden - Berechnung und Darstellung von Klimadaten - Teil 1: Monats- und Jahresmittelwerte einzelner meteorologischer Elemente (ISO 15927-1:2002)

Diese Norm legt Verfahren zur Berechnung und Darstellung von monatlichen Klimadaten fest, die für die Bewertung unterschiedlicher Aspekte des wärme- und feuchteschutztechnischen Verhaltens von Gebäuden notwendig sind. Die Zahlenwerte für bestimmte Orte sind vom meteorologischen Dienst des betreffenden Landes zu erhalten.
Gegenstand dieser Norm sind die folgenden einzelnen Klimaelemente:
   Lufttemperatur;
   Luftfeuchte;
   Windgeschwindigkeit;
   Niederschlag;
   Sonnenstrahlung;
   Langwellige Strahlung.
Meteorologische Geräte und Beobachtungsverfahren werden nicht behandelt; sie werden von der World Meteorological Organisation (WMO) festgelegt.

Performance hygrothermique des bâtiments - Calcul et présentation des données climatiques - Partie 1: Moyennes mensuelles et annuelles des éléments météorologiques simples (ISO 15927-1:2002)

La présente Norme européenne spécifie les méthodes de calcul et de présentation des moyennes mensuelles des paramètres de données climatiques nécessaires à l'évaluation de certains aspects des performances thermiques et hygroscopiques des bâtiments. Il convient que les valeurs numériques soient obtenues auprès du service météorologique du pays correspondant.
La présente Norme européenne couvre les variables climatiques simples suivantes :
- température de l'air ;
- humidité atmosphérique ;
- vitesse du vent ;
- précipitations ;
- rayonnement solaire ;
- rayonnement de grandes longueurs d'onde.
Les instruments météorologiques et les méthodes d'observation ne sont pas traités ; ils sont spécifiés par l'Organisation météorologique mondiale (WMO).

Higrotermalne značilnosti stavb - Izračun in predstavitev podnebnih podatkov - 1. del: Mesečno in letno povprečje posameznih vremenskih elementov (ISO 15927-1:2003)

General Information

• Status: Published
• Publication Date: 14-Nov-2003
• ICS: 91.120.10 - Thermal insulation of buildings
• ICS: 91.120.30 - Waterproofing
• Technical Committee: CEN/TC 89 - Thermal performance of buildings and building components
• Drafting Committee: CEN/TC 89/WG 9 - Climatic data
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 15-Aug-2008
• Completion Date: 15-Aug-2008
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Ref Project: SIST EN ISO 15927-1:2004 - Hygrothermal performance of buildings - Calculation and presentation of climatic data - Part 1: Monthly means of single meteorological elements (ISO 15927-1:2003)

Relations

• Child: EN ISO 15927-5:2004 - Hygrothermal performance of buildings - Calculation and presentation of climatic data - Part 5: Data for design heat load for space heating (ISO 15927-5:2004)
• Effective Date: 22-Dec-2008
• Child: EN ISO 15927-4:2005 - Hygrothermal performance of buildings - Calculation and presentation of climatic data - Part 4: Hourly data for assessing the annual energy use for heating and cooling (ISO 15927-4:2005)
• Effective Date: 22-Dec-2008

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2004
Higrotermalne značilnosti stavb - Izračun in predstavitev podnebnih podatkov - 1.
del: Mesečno in letno povprečje posameznih vremenskih elementov (ISO 15927-
1:2003)
Hygrothermal performance of buildings - Calculation and presentation of climatic data -
Part 1: Monthly means of single meteorological elements (ISO 15927-1:2003)
Wärme- und feuchteschutztechnisches Verhalten von Gebäuden - Berechnung und
Darstellung von Klimadaten - Teil 1: Monats- und Jahresmittelwerte einzelner
meteorologischer Elemente (ISO 15927-1:2002)
Performance hygrothermique des bâtiments - Calcul et présentation des données
climatiques - Partie 1: Moyennes mensuelles et annuelles des éléments
météorologiques simples (ISO 15927-1:2002)
Ta slovenski standard je istoveten z: EN ISO 15927-1:2003
ICS:
07.060 Geologija. Meteorologija. Geology. Meteorology.
Hidrologija Hydrology
91.120.10 Toplotna izolacija stavb Thermal insulation of
buildings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 15927-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2003
ICS 91.120.10; 91.120.30
English version
Hygrothermal performance of buildings - Calculation and
presentation of climatic data - Part 1: Monthly means of single
meteorological elements (ISO 15927-1:2003)
Performance hygrothermique des bâtiments - Calcul et Wärme- und feuchteschutztechnisches Verhalten von
présentation des données climatiques - Partie 1: Moyennes Gebäuden - Berechnung und Darstellung von Klimadaten -
mensuelles et annuelles des éléments météorologiques Teil 1: Monats- und Jahresmittelwerte einzelner
simples (ISO 15927-1:2002) meteorologischer Elemente (ISO 15927-1:2002)
This European Standard was approved by CEN on 10 April 2003.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15927-1:2003 E
worldwide for CEN national Members.

Contents
Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms, definitions, symbols and units .4
3.1 Terms and definitions.4
3.2 Symbols and units .6
4 Periods over which parameters are calculated .7
5 Air temperature .8
5.1 Sources of data .8
5.2 Calculation of the monthly mean .8
5.3 Calculation of the standard deviation of daily means about the monthly mean.9
5.4 Calculation of the annual mean and standard deviation.10
5.5 Expression of results .10
6 Atmospheric humidity.11
6.1 Sources of data .11
6.2 Relationships between temperature and humidity parameters.11
6.3 Calculation of monthly mean.13
6.4 Expression of results .14
7 Wind speed and direction .16
7.1 Methods of measurement .16
7.2 Environmental influence on mean wind speed.16
7.3 Statistical elements .20
7.4 Expression of results .21
8 Precipitation .22
8.1 Sources of data .22
8.2 Calculation of monthly total.22
8.3 Expression of results .22
9 Solar radiation.22
9.1 Sources of data .22
9.2 Calculation of monthly total solar irradiation .23
9.3 Expression of results .24
9.4 Estimating irradiances that are not measured.24
10 Longwave radiation .24
10.1 General.24
10.2 Sources of data .24
10.3 Calculation of monthly total longwave irradiation from the atmosphere (sky).24
10.4 Expression of results .25
Annex A (informative) Methods for splitting global solar irradiance into the direct and diffuse parts.26
Annex B (informative) Methods for estimating the longwave atmospheric irradiances (longwave sky
irradiances)and the sky temperature.27
Bibliography .29
Foreword
This document (EN ISO 15927-1:2003) has been prepared by Technical Committee CEN/TC 89, “Thermal
performance of buildings and building components”, the secretariat of which is held by SIS, in collaboration with
Technical Committee ISO/TC 163, “Thermal performance and energy use in the built environment”,
Subcommittee SC 2 "Calculation methods".
This European Standard shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by May 2004, and conflicting national standards shall be withdrawn at the latest
by May 2004.
This standard is one of a series of standards on calculation methods for the design and evaluation of the thermal
and moisture performance of buildings. EN ISO 15927, Hygrothermal performance of buildings – Calculation and
presentation of climatic data, consists of six parts:
Part 1: Monthly means of single meteorological elements;
Part 2: Data for design cooling loads and risk of overheating;
Part 3: Calculation of a driving rain index for vertical surfaces from hourly wind and rain data;
Part 4: Data for assessing the annual energy for heating and cooling;
Part 5: Winter external design air temperatures and related wind data;
Part 6: Accumulated temperature differences for assessing energy use in space heating.
Annexes A and B are informative.
This document includes a Bibliography.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,
Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
1 Scope
This European Standard specifies procedures for calculating and presenting the monthly means of those
parameters of climatic data needed to assess some aspects of the thermal and moisture performance of
buildings. Numerical values should be obtained from the meteorological service in the relevant country.
This European Standard covers the following single climate variables:
� air temperature;
� atmospheric humidity;
� wind speed;
� precipitation;
� solar radiation;
� longwave radiation.
Meteorological instrumentation and methods of observation are not covered; these are specified by the World
Meteorological Organisation (WMO).
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
World Meteorological Organisation: Guide to meteorological instruments and methods of observation. 6th Edition
WMO - No.8 1996.
3 Terms, definitions, symbols and units
3.1 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply.
3.1.1
mixing ratio
ratio of the mass of water vapour to the mass of dry air with which the water vapour is associated
3.1.2
water vapour pressure
part of the total atmospheric pressure exerted by water vapour
3.1.3
saturated vapour pressure over water
vapour pressure of moist air in equilibrium with a plane liquid water surface
3.1.4
relative humidity
ratio of the vapour pressure of moist air to the vapour pressure it would have if it were saturated
3.1.5
reference wind speed
wind speed measured at a height of 10 m above ground level in open country without nearby obstacles
3.1.6
gust speed
greatest instantaneous wind speed observed during the period over which the mean is calculated
3.1.7
solar irradiance
radiation power per area generated by the reception of solar radiation on a plane of any tilt and orientation
The following special quantities can be distinguished according to the conditions of reception:
3.1.7.1
global solar irradiance
irradiance generated by reception of solar radiation from the full hemisphere
NOTE According to the following definitions it is equal to the reception of direct solar and diffuse solar radiation on a
horizontal plane. In the case of tilted planes a portion of the ground reflected global solar radiation is also received.
3.1.7.2
direct solar irradiance
irradiance generated by the reception of solar radiation from a conical angle which surrounds concentrically the
apparent solar disk
NOTE 1 Also referred to as "beam solar radiation".
NOTE 2 The horizontal component of the direct solar irradiance is a part of the global solar irradiance.
NOTE 3 Any component of the direct solar irradiance is generated nearly exclusively from unscattered solar radiation.
NOTE 4 The diameter of the apparent solar disk corresponds to about 0,5 degrees; for technical reasons the available
radiometers receive t
...

SLOVENSKI STANDARD
01-september-2004
+LJURWHUPDOQHNDUDNWHULVWLNHVWDYE±5DþXQDQMHLQSUHGVWDYLWHYNOLPDWVNLK
SRGDWNRY±GHO0HVHþQRLQOHWQRSRYSUHþMHSRVDPH]QLKYUHPHQVNLKHOHPHQWRY
,62
Hygrothermal performance of buildings - Calculation and presentation of climatic data -
Part 1: Monthly means of single meteorological elements (ISO 15927-1:2003)
Wärme- und feuchteschutztechnisches Verhalten von Gebäuden - Berechnung und
Darstellung von Klimadaten - Teil 1: Monats- und Jahresmittelwerte einzelner
meteorologischer Elemente (ISO 15927-1:2002)
Performance hygrothermique des bâtiments - Calcul et présentation des données
climatiques - Partie 1: Moyennes mensuelles et annuelles des éléments météorologiques
simples (ISO 15927-1:2002)
Ta slovenski standard je istoveten z: EN ISO 15927-1:2003
ICS:
07.060 Geologija. Meteorologija. Geology. Meteorology.
Hidrologija Hydrology
91.120.10 Toplotna izolacija stavb Thermal insulation
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 15927-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2003
ICS 91.120.10; 91.120.30
English version
Hygrothermal performance of buildings - Calculation and
presentation of climatic data - Part 1: Monthly means of single
meteorological elements (ISO 15927-1:2003)
Performance hygrothermique des bâtiments - Calcul et Wärme- und feuchteschutztechnisches Verhalten von
présentation des données climatiques - Partie 1: Moyennes Gebäuden - Berechnung und Darstellung von Klimadaten -
mensuelles et annuelles des éléments météorologiques Teil 1: Monats- und Jahresmittelwerte einzelner
simples (ISO 15927-1:2002) meteorologischer Elemente (ISO 15927-1:2002)
This European Standard was approved by CEN on 10 April 2003.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 15927-1:2003 E
worldwide for CEN national Members.

Contents
Page
Foreword.3
1 Scope .4
2 Normative references .4
3 Terms, definitions, symbols and units .4
3.1 Terms and definitions.4
3.2 Symbols and units .6
4 Periods over which parameters are calculated .7
5 Air temperature .8
5.1 Sources of data .8
5.2 Calculation of the monthly mean .8
5.3 Calculation of the standard deviation of daily means about the monthly mean.9
5.4 Calculation of the annual mean and standard deviation.10
5.5 Expression of results .10
6 Atmospheric humidity.11
6.1 Sources of data .11
6.2 Relationships between temperature and humidity parameters.11
6.3 Calculation of monthly mean.13
6.4 Expression of results .14
7 Wind speed and direction .16
7.1 Methods of measurement .16
7.2 Environmental influence on mean wind speed.16
7.3 Statistical elements .20
7.4 Expression of results .21
8 Precipitation .22
8.1 Sources of data .22
8.2 Calculation of monthly total.22
8.3 Expression of results .22
9 Solar radiation.22
9.1 Sources of data .22
9.2 Calculation of monthly total solar irradiation .23
9.3 Expression of results .24
9.4 Estimating irradiances that are not measured.24
10 Longwave radiation .24
10.1 General.24
10.2 Sources of data .24
10.3 Calculation of monthly total longwave irradiation from the atmosphere (sky).24
10.4 Expression of results .25
Annex A (informative) Methods for splitting global solar irradiance into the direct and diffuse parts.26
Annex B (informative) Methods for estimating the longwave atmospheric irradiances (longwave sky
irradiances)and the sky temperature.27
Bibliography .29
Foreword
This document (EN ISO 15927-1:2003) has been prepared by Technical Committee CEN/TC 89, “Thermal
performance of buildings and building components”, the secretariat of which is held by SIS, in collaboration with
Technical Committee ISO/TC 163, “Thermal performance and energy use in the built environment”,
Subcommittee SC 2 "Calculation methods".
This European Standard shall be given the status of a national standard, either by publication of an identical text
or by endorsement, at the latest by May 2004, and conflicting national standards shall be withdrawn at the latest
by May 2004.
This standard is one of a series of standards on calculation methods for the design and evaluation of the thermal
and moisture performance of buildings. EN ISO 15927, Hygrothermal performance of buildings – Calculation and
presentation of climatic data, consists of six parts:
Part 1: Monthly means of single meteorological elements;
Part 2: Data for design cooling loads and risk of overheating;
Part 3: Calculation of a driving rain index for vertical surfaces from hourly wind and rain data;
Part 4: Data for assessing the annual energy for heating and cooling;
Part 5: Winter external design air temperatures and related wind data;
Part 6: Accumulated temperature differences for assessing energy use in space heating.
Annexes A and B are informative.
This document includes a Bibliography.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,
Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
1 Scope
This European Standard specifies procedures for calculating and presenting the monthly means of those
parameters of climatic data needed to assess some aspects of the thermal and moisture performance of
buildings. Numerical values should be obtained from the meteorological service in the relevant country.
This European Standard covers the following single climate variables:
air temperature;
atmospheric humidity;
wind speed;
precipitation;
solar radiation;
longwave radiation.
Meteorological instrumentation and methods of observation are not covered; these are specified by the World
Meteorological Organisation (WMO).
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
World Meteorological Organisation: Guide to meteorological instruments and methods of observation. 6th Edition
WMO - No.8 1996.
3 Terms, definitions, symbols and units
3.1 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply.
3.1.1
mixing ratio
ratio of the mass of water vapour to the mass of dry air with which the water vapour is associated
3.1.2
water vapour pressure
part of the total atmospheric pressure exerted by water vapour
3.1.3
saturated vapour pressure over water
vapour pressure of moist air in equilibrium with a plane liquid water surface
3.1.4
relative humidity
ratio of the vapour pressure of moist air to the vapour pressure it would have if it were saturated
3.1.5
reference wind speed
wind speed measured at a height of 10 m above ground level in open country without nearby obstacles
3.1.6
gust speed
greatest instantaneous wind speed observed during the period over which the mean is calculated
3.1.7
solar irradiance
radiation power per area generated by the reception of solar radiation on a plane of any tilt and orientation
The following special quantities can be distinguished according to the conditions of reception:
3.1.7.1
global solar irradiance
irradiance generated by reception of solar radiation from the full hemisphere
NOTE According to the following definitions it is equal to the reception of direct solar and diffuse solar radiation on a
horizontal plane. In the case of tilted planes a portion of the ground reflected global solar radiation is also received.
3.1.7.2
direct solar irradiance
irradiance generated by the reception of solar radiation from a conical angle which surrounds concentrically the
apparent solar disk
NOTE 1 Also referred to as "beam solar radiation".
NOTE 2 The horizontal component of the direct solar irradiance is a part of the global solar irradiance.
NOTE 3 Any component of the direct solar irradiance is generated nearly exclusively from unscattered solar radiation.
NOTE 4 The diameter of the apparent solar disk corresponds to about 0,5 degrees; for technical reasons the available
radiometers receive the di
...