EN 15241:2007

Ventilation for buildings - Calculation methods for energy losses due to ventilation and infiltration in commercial buildings

This European Standard describes the method to calculate the energy impact of ventilation systems (including airing) in buildings to be used for applications such as energy calculations, heat and cooling load calculation.
Its purpose is to define how to calculate the characteristics (temperature, humidity) of the air entering the building, and the corresponding energies required for its treatment and the auxiliaries electrical energy required.
This standard can also be used for air heating and cooling systems when they assure the provision of ventilation, considering that prEN 15243 will provide the required heating or cooling load and the corresponding air flows and/or air temperatures.

Lüftung von Gebäuden - Berechnungsverfahren für den Energieverlust aufgrund der Lüftung und Infiltration in Nichtwohngebäuden

Diese Europäische Norm beschreibt das Verfahren zur Berechnung der energetischen Auswirkungen von Lüftungsanlagen (einschließlich Fensterlüftung) in Gebäuden, das z. B. bei Energieberechnungen und Heiz  und Kühllastberechnungen anzuwenden ist.
Der Zweck besteht darin, festzulegen, wie die Kennwerte (Temperatur, Luftfeuchte) der in das Gebäude eintretenden Luft und die entsprechenden für ihre Behandlung erforderlichen Energien und elektrische Hilfsenergie zu berechnen sind.
Diese Norm kann auch auf Lufterhitzer und  kühler angewendet werden, wenn sie die Lüftung sicherstellen, wobei zu berücksichtigen ist, dass die geforderte Heiz  bzw. Kühllast und die entsprechenden Luft¬volumen¬ströme und/oder Lufttemperaturen in prEN 15243 festgelegt werden.

Ventilation des bâtiments - Méthodes de calcul des pertes d'énergie dues à la ventilation et à l'infiltration dans les bâtiments commerciaux

La présente Norme européenne décrit la méthode de calcul de l’impact énergétique des systèmes de ventilation (y compris l’aération) dans les bâtiments, utilisée pour des applications telles que les calculs d’énergie et le calcul de la charge de chauffage et de refroidissement.
La présente norme vise à définir les méthodes de calcul des caractéristiques (température, humidité) de l’air entrant dans le bâtiment, et les énergies correspondantes requises pour le traitement de cet air et les énergies requises par les auxiliaires électriques.
La présente norme peut également être utilisée pour les systèmes de refroidissement et de chauffage de l’air lorsqu’ils assurent la ventilation, sachant que le prEN 15243 fournira les charges de refroidissement et de chauffage exigées et les températures d’air et/ou les débits d’air correspondants.

Prezračevanje stavb - Računske metode za energijske izgube zaradi prezračevanja in infiltracije v stavbah

General Information

• Status: Withdrawn
• Publication Date: 15-May-2007
• Withdrawal Date: 30-May-2017
• ICS: 91.140.30 - Ventilation and air-conditioning systems
• Technical Committee: CEN/TC 156 - Ventilation for buildings
• Drafting Committee: CEN/TC 156/WG 7 - System performance
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 31-May-2017
• Directive: 89/106/EEC - Construction products
• Mandate: M/343 - Mandate to CEN, CENELEC and ETSI for the elaboration and adoption of standards for a methodology calculating the integrated energy performance of buildings and estimating the environmental impact, in accordance with the terms set forth in Directive 2002/91/EC
• Ref Project: SIST EN 15241:2007 - Ventilation for buildings - Calculation methods for energy losses due to ventilation and infiltration in buildings

Relations

• Replaced By: EN 16798-5-1:2017 - Energy performance of buildings - Ventilation for buildings - Part 5-1: Calculation methods for energy requirements of ventilation and air conditioning systems (Modules M5-6, M5-8, M6-5, M6-8, M7-5, M7-8) - Method 1: Distribution and generation
• Effective Date: 08-Jun-2022
• Replaced By: EN 16798-5-2:2017 - Energy performance of buildings - Ventilation for buildings - Part 5-2: Calculation methods for energy requirements of ventilation systems (Modules M5-6, M5-8, M6-5, M6-8, M7-5, M7-8) - Method 2: Distribution and generation
• Effective Date: 08-Jun-2022
• Corrected By: EN 15241:2007/AC:2011 - Ventilation for buildings - Calculation methods for energy losses due to ventilation and infiltration in buildings
• Effective Date: 08-Jun-2022

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Lüftung von Gebäuden - Berechnungsverfahren für den Energieverlust aufgrund der Lüftung und Infiltration in GebäudenVentilation des bâtiments - Méthodes de calcul des pertes d'énergie dues a la ventilation et a l'infiltration dans les bâtimentsVentilation for buildings - Calculation methods for energy losses due to ventilation and infiltration in buildings91.140.30VLVWHPLVentilation and air-conditioningICS:Ta slovenski standard je istoveten z:EN 15241:2007SIST EN 15241:2007en01-oktober-2007SIST EN 15241:2007SLOVENSKI
STANDARD







EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15241May 2007ICS 91.140.30 English VersionVentilation for buildings - Calculation methods for energy lossesdue to ventilation and infiltration in commercial buildingsVentilation des bâtiments - Méthode de calcul des pertesd'énergie dues à la ventilation et aux infiltrations dans lesbâtiments commerciauxLüftung von Gebäuden - Berechnungsverfahren für denEnergieverlust aufgrund der Lüftung und Infiltration inNichtwohngebäudenThis European Standard was approved by CEN on 26 March 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15241:2007: E



EN 15241:2007 (E) 2 Contents Page Foreword.3 1 Scope.6 2 Normative references.6 3 Terms and definitions.6 4 Symbols and abbreviations.7 5 General approach.8 6 Steady state calculation.9 6.1 Basis of the calculation method.9 6.2 Air entering through infiltration, passive air inlets or windows.9 6.3 Air entering through balanced or supply only system calculation.9 6.3.1 General.9 6.3.2 Duct heat losses.10 6.3.3 Duct flow losses.10 6.3.4 Fan.10 6.3.5 heat exchanger.13 6.3.6 Mixing boxes.15 6.3.7 Pre-heating.
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