EN 13136:2001

Refrigerating systems and heat pumps - Pressure relief devices and their associated piping - Methods for calculation

1.1 This European Standard describes the calculation of mass flow for sizing pressure relief devices for components of refrigerating systems. Note: The term "refrigerating system" used in this standard includes heat pumps. 1.2 This European Standard describes the calculation of discharge capacities for pressure relief valves and other pressure relief devices in refrigerating systems including the necessary data for sizing these when relieving to atmosphere or to components within the system at lower pressure.

Kälteanlagen und Wärmepumpen - Druckentlastungseinrichtungen und zugehörige Leitungen - Berechnungsverfahren

Anwendungsbereich
1.1  Diese Europäische Norm beschreibt die Berechnung der Massenströme zur Größenbestimmung von Druckent-
lastungseinrichtungen für Teile von Kälteanlagen.
   ANMERKUNG: Der in dieser Norm verwendete Begriff "Kälteanlage" schließt Wärmepumpen mit ein.
1.2  Diese Europäische Norm beschreibt die Berechnung der Abblaseleistungen von Druckentlastungsventilen und
anderen Druckentlastungseinrichtungen in Kälteanlagen einschließlich der hierzu erforderlichen Daten zur Größenbe-
stimmung dieser Einrichtungen, wenn sie ins Freie oder in  Bauteile der Kälteanlage mit niedrigerem Druck
abblasen.
1.3  Diese Europäische Norm legt die Anforderungen an die Konstruktion und die Auswahl von Druckentlastungsein-
richtungen zur Vermeidung von unzulässigen Drücken, hervorgerufen durch innere und äußere Wärmequellen, den
Druckerzeuger und die Wärmeausdehnung eingesperrter Flüssigkeit, fest.
1.4  Diese Europäische Norm beschreibt die Berechnung des Druckabfalls in den zu- und abführenden Leitungen
von Druckentlastungsventilen und anderen Druckentlastungseinrichtungen einschließlich der erforderlichen Daten.

Systèmes de réfrigération et pompes à chaleur - Dispositifs de surpression et tuyauteries associées - Méthodes de calcul

1 Domaine d'application
1.1   La présente norme européenne décrit le mode de calcul du débit massique pour le dimensionnement des dispositifs de surpression pour les composants des systèmes de réfrigération.
NOTE   Le terme "système de réfrigération", utilisé dans la présente norme, inclut les pompes à chaleur.
1.2   La présente norme européenne décrit le mode de calcul des capacités de décharge des soupapes de sûreté et des autres dispositifs de surpression des systèmes de réfrigération, y compris les données nécessaires à leur dimensionnement lors de leur décharge dans l'atmosphère ou dans les composants du système à basse pression.
1.3   La présente norme européenne spécifie les exigences de conception et de sélection des dispositifs de surpression pour éviter une pression excessive due aux sources de chaleur internes et externes, aux autres sources de génération de pression (par exemple compresseurs, rampes à gaz, etc.) et à la dilatation du fluide piégé.
1.4   La présente norme européenne décrit le mode de calcul de la chute de pression dans la tuyauterie, en amont et en aval des soupapes de sûreté et autres dispositifs de surpression, et inclut les données nécessaires.

Hladilni sistemi in toplotne črpalke - Tlačne varnostne naprave in njihove napeljave - Metode za izračun

General Information

• Status: Withdrawn
• Publication Date: 08-May-2001
• Withdrawal Date: 08-Oct-2013
• ICS: 27.080 - Heat pumps
• ICS: 27.200 - Refrigerating technology
• Technical Committee: CEN/TC 182 - Refrigerating systems, safety and environmental requirements
• Drafting Committee: CEN/TC 182/WG 2 - Design and testing
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 09-Oct-2013
• Completion Date: 09-Oct-2013
• Directive: 97/23/EC - Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States concerning pressure equipment
• Mandate: M/071 - Mandate to CEN for standardization in the field of Pressure equipment
• Ref Project: SIST EN 13136:2002 - Refrigerating systems and heat pumps - Pressure relief devices and their associated piping - Methods for calculation

Relations

• Replaced By: EN 13136:2013 - Refrigerating systems and heat pumps - Pressure relief devices and their associated piping - Methods for calculation
• Effective Date: 08-Jun-2022
• Amended By: EN 13136:2001/A1:2005 - Refrigerating systems and heat pumps - Pressure relief devices and their associated piping - Method for calculation
• Effective Date: 08-Jun-2022

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kälteanlagen und Wärmepumpen - Druckentlastungseinrichtungen und zugehörige Leitungen - BerechnungsverfahrenSystemes de réfrigération et pompes a chaleur - Dispositifs de surpression et tuyauteries associées - Méthodes de calculRefrigerating systems and heat pumps - Pressure relief devices and their associated piping - Methods for calculation27.200Hladilna tehnologijaRefrigerating technology27.080Heat pumpsICS:Ta slovenski standard je istoveten z:EN 13136:2001SIST EN 13136:2002en01-januar-2002SIST EN 13136:2002SLOVENSKI
STANDARD



SIST EN 13136:2002



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13136May 2001ICS 27.080; 27.200English versionRefrigerating systems and heat pumps - Pressure relief devicesand their associated piping - Methods for calculationSystèmes de réfrigération et pompes à chaleur - Dispositifsde surpression et tuyauteries associées - Méthodes decalculKälteanlagen und Wärmepumpen -Druckentlastungseinrichtungen und zugehörige Leitungen -BerechnungsverfahrenThis European Standard was approved by CEN on 7 March 2001.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 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 Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13136:2001 ESIST EN 13136:2002



Page 2EN 13136:2001ContentsPageForeword .2Introduction .21 Scope .32 Normative references .33 Terms and definitions .34 Symbols .45 General .66 Pressure relief devices for protection of system components .67 Discharge capacities of pressure relief devices .7Annex A
(normative)
Values of functions, factors and properties ofrefrigerants .12Annex B
(informative)
Calculation of flow areas for non-evaporating andevaporating liquids .16Annex C
(informative)
Example of calculation for sizing pressure relief devices with the corresponding pipes .18Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of EU Directives .22Bibliography . 23ForewordThis European Standard has been prepared by Technical Committee CEN/TC 182 "Refrigerating systems, safetyand environmental requirements", the secretariat of which is held by DIN.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by November 2001, and conflicting national standards shall be withdrawn at the latestby November 2001.This European Standard has been prepared under a mandate given to CEN by the European Commission and theEuropean Free Trade Association, and supports essential requirements of the EU Directive(s).For relationship with the EU Directive(s), see informative annex ZA which is an integral part of this standard.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and the United Kingdom.IntroductionThis European Standard is based on ISO/DIS 4126-1:1995 modified to suit the specific requirements, and to includethe data, for refrigerating systems. It provides means of satisfying the pressure relief requirements of EN 378-1 andEN 378-2. SIST EN 13136:2002



Page 3EN 13136:20011
Scope1.1
This European Standard describes the calculation of mass fl
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