EN 13136:2013+A1:2018

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 European 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.
1.3   This European Standard specifies the requirements for selection of pressure relief devices to prevent excessive pressure due to internal and external heat sources, the sources of increasing pressure (e.g. compressor, heaters, etc.) and thermal expansion of trapped liquid.
1.4   This European Standard describes the calculation of the pressure loss in the upstream and downstream line of pressure relief valves and other pressure relief devices and includes the necessary data.
1.5   This European Standard refers to other relevant standards in Clause 5.

Kälteanlagen und Wärmepumpen - Druckentlastungseinrichtungen und zugehörige Leitungen - Berechnungsverfahren

1.1 Diese Europäische Norm beschreibt die Berechnung der Massenströme zur Größenbestimmung von Druckentlastungseinrichtungen für Teile von Kälteanlagen.
ANMERKUNG   Der in dieser Europäischen 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 Größenbestimmung 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 Auswahl von Druckentlastungseinrichtungen zur Vermeidung von unzulässigen Drücken, hervorgerufen durch innere und äußere Wärmequellen, Druckerzeuger (z. B. Verdichter, Erhitzer usw.) 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.
1.5 Diese Europäische Norm verweist in Abschnitt 5 auf weitere einschlägige Normen.

Systèmes frigorifiques et pompes à chaleur - Dispositifs de limitation de pression et tuyauteries associées - Méthodes de calcul

1.1   La présente Norme européenne décrit le calcul du débit-masse pour le dimensionnement des dispositifs de limitation de pression pour les composants des systèmes frigorifiques.
NOTE   Le terme « système frigorifique » utilisé dans la présente Norme européenne inclut les pompes à chaleur.
1.2   La présente Norme européenne décrit le calcul des capacités de décharge des soupapes de sûreté et autres dispositifs de limitation de pression des systèmes frigorifique, 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 relatives à la sélection des dispositifs de limitation de pression pour éviter une pression excessive due aux sources de chaleur internes et externes, aux autres sources de génération de pression (par exemple compresseurs, chauffages, etc.) et à la dilatation du fluide piégé.
1.4   La présente Norme européenne décrit le calcul de la perte de charge dans la tubulure en amont et en aval des soupapes de sûreté et autres dispositifs de limitation de pression, et inclut les données nécessaires.
1.5   La présente Norme européenne renvoie à d’autres normes pertinentes à l’Article 5.

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

1.1 Ta evropski standard opisuje izračun masnega pretoka za tlačne varnostne naprave komponent hladilnih sistemov.
OPOMBA: Pojem »hladilni sistem« v tem evropskem standardu zajema tudi toplotne črpalke.
1.2 Ta evropski standard opisuje izračun zmogljivosti za praznjenje tlačnih varnostnih ventilov in drugih tlačnih varnostnih naprav v hladilnih sistemih, vključno s potrebnimi podatki za določanje njihove količine pri razbremenitvi v ozračje ali v komponente znotraj sistema, ki imajo nižji tlak.
1.3 Ta evropski standard določa zahteve za izbiro tlačnih varnostnih naprav za preprečevanje prekomernega tlaka, ki nastane zaradi notranjih in zunanjih virov toplote, virov naraščajočega tlaka (npr. kompresor, grelniki itd.) ter toplotnega raztezanja ujete tekočine.
1.4 Ta evropski standard opisuje izračun izgube tlaka na vhodni in izhodni liniji tlačnih varnostnih ventilov in drugih tlačnih varnostnih naprav ter vključuje potrebne podatke.
1.5 Ta evropski standard se nanaša na druge ustrezne standarde iz točke 5.

General Information

• Status: Published
• Publication Date: 27-Nov-2018
• Withdrawal Date: 30-May-2019
• 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: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 28-Nov-2018
• Completion Date: 28-Nov-2018
• Directive: 2014/68/EU - Directive 2014/68/EU of the European Parliament and of the Council of 15 May 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of pressure equipment
• Mandate: M/071 - Mandate to CEN for standardization in the field of Pressure equipment
• Ref Project: SIST EN 13136:2014+A1:2019 - Refrigerating systems and heat pumps - Pressure relief devices and their associated piping - Methods for calculation

Relations

• Merged From: EN 13136:2013/prA1:2017 - Refrigerating systems and heat pumps - Pressure relief devices and their associated piping - Methods for calculation
• Effective Date: 24-Oct-2018
• Merged From: EN 13136:2013 - Refrigerating systems and heat pumps - Pressure relief devices and their associated piping - Methods for calculation
• Effective Date: 24-Oct-2018
• Revised: FprEN ISO 24664 - Refrigerating systems and heat pumps - Pressure relief devices and their associated piping - Methods for calculation (ISO/FDIS 24664:2024)
• Effective Date: 09-Dec-2020

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Kälteanlagen und Wärmepumpen - Druckentlastungseinrichtungen und zugehörige Leitungen - BerechnungsverfahrenSystèmes frigorifiques et pompes à chaleur - Dispositifs de limitation de pression 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 13136:2013+A1:2018SIST EN 13136:2014+A1:2019en,fr,de01-februar-2019SIST EN 13136:2014+A1:2019SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13136:2013+A1
November
t r s z ICS
t yä r z râ
t yä t r r Supersedes EN
s u s u xã t r s uEnglish Version
Refrigerating systems and heat pumps æ Pressure relief devices and their associated piping æ Methods for calculation Systèmes frigorifiques et pompes à chaleur æ Dispositifsde limitation de pression et tuyauteries associées æ Méthodes de calcul
Kälteanlagen und Wärmepumpen æ Druckentlastungseinrichtungen und zugehörige Leitungen æ Berechnungsverfahren This European Standard was approved by CEN on
t v August
t r s u and includes Amendment
s approved by CEN on
w November
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s u s u xã t r s u ªA sã t r s z ESIST EN 13136:2014+A1:2019

Values of functions, factors and properties of refrigerants . 17 Annex B (informative)
Calculation of flow areas for non-evaporating and evaporating liquids . 26 B.1 Calculation of the flow area for non-evaporating liquids . 26 B.2 Calculation of the flow area for evaporating liquids . 26 Annex C (informative)
Example of calculation for sizing pressure relief devices with the corresponding pipes . 28 C.1 Assumptions for the calculation example . 29 C.2 Calculation of the required minimum discharge capacity, Qmd at standard heat flow rate . 29 C.3 Calculation of the required minimum discharge capacity Qmd at reduced heat flow rate . 30 C.4 Calculation of flow area Ac, selection of pressure relief valve . 30 SIST EN 13136:2014+A1:2019

Relationship between this European Standard and the essential requirements of Directive 2014/68/EU (Pressure equipment Directive) aimed to be covered . 34 Bibliography . 35
IEC Electropedia: available at http://www.electropedia.org/
ISO Online browsing platform: available at http://www.iso.org/obp " 4 Symbols For the purposes of this document, the symbols given in EN 764-2:2012 and the following apply: Symbol Designation Unit A Flow area of the pressure relief valve π×=24dA mm2 Ac Calculated flow area mm2 ADN Valve cross section related to DN mm2 Ain Inside area of inlet tube mm2 Aliq Calculated flow area of liquid after expansion mm2 Aout Inside area of outlet tube mm2 AR Inside area of tube mm2 Asurf External surface area of the vessel m2 Avap Calculated flow area of vapour after expansion mm2 C Function of the isentropic exponents (Table A.2
...