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

General Information

Status
Not Published
Current Stage
4060 - Closure of enquiry - Enquiry
Due Date
03-Aug-2017
Completion Date
03-Aug-2017

RELATIONS

Buy Standard

Amendment
EN 13136:2014/oprA1:2017 - BARVE
English language
12 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 13136:2014/oprA1:2017
01-julij-2017
+ODGLOQLVLVWHPLLQWRSORWQHþUSDONH7ODþQHYDUQRVWQHQDSUDYHLQQMLKRYH
QDSHOMDYH0HWRGH]DL]UDþXQ

Refrigerating systems and heat pumps - Pressure relief devices and their associated

piping - Methods for calculation
Kälteanlagen und Wärmepumpen - Druckentlastungseinrichtungen und zugehörige
Leitungen - Berechnungsverfahren

Systèmes frigorifiques et pompes à chaleur - Dispositifs de limitation de pression et

tuyauteries associées - Méthodes de calcul
Ta slovenski standard je istoveten z: EN 13136:2013/prA1:2017
ICS:
27.080 7RSORWQHþUSDONH Heat pumps
27.200 Hladilna tehnologija Refrigerating technology
SIST EN 13136:2014/oprA1:2017 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 13136:2014/oprA1:2017
---------------------- Page: 2 ----------------------
SIST EN 13136:2014/oprA1:2017
DRAFT
EUROPEAN STANDARD
EN 13136:2013
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
May 2017
ICS 27.080; 27.200
English Version
Refrigerating systems and heat pumps - Pressure relief
devices and their associated piping - Methods for
calculation

Systèmes frigorifiques et pompes à chaleur - Dispositifs Kälteanlagen und Wärmepumpen -

de limitation de pression et tuyauteries associées - Druckentlastungseinrichtungen und zugehörige

Méthodes de calcul Leitungen - Berechnungsverfahren

This draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 182.

This draft amendment A1, if approved, will modify the European Standard EN 13136:2013. If this draft becomes an amendment,

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of

this amendment into the relevant national standard without any alteration.

This draft amendment was established by CEN 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 CEN-CENELEC

Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are

aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without

notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13136:2013/prA1:2017:2017 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 13136:2014/oprA1:2017
EN 13136:2013/prA1:2017 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

1 Modification to Annex A, "Values of functions, factors and properties of refrigerants" ....... 4

2 Modification to Annex C, "Example of calculation for sizing pressure relief devices

with the corresponding pipes" ................................................................................................................ 12

---------------------- Page: 4 ----------------------
SIST EN 13136:2014/oprA1:2017
EN 13136:2013/prA1:2017
European foreword

This document (EN 13136:2013/prA1:2017) has been prepared by Technical Committee CEN/TC 182

“Refrigerating systems, safety and environmental requirements”, the secretariat of which is held by DIN.

This document is currently submitted to the CEN Enquiry.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association, and supports essential requirements of EU Directive(s).

For relationship with EU Directive(s), see informative Annex ZA of EN 13136:2013, which is an integral

part of this document.
---------------------- Page: 5 ----------------------
SIST EN 13136:2014/oprA1:2017
EN 13136:2013/prA1:2017 (E)
1 Modification to Annex A, "Values of functions, factors and properties of
refrigerants"
Replace Table A.1 with the following table:
"Table A.1 — Properties of refrigerants
Refrigerant Description Formula Isentropic Critical Function
a b
number exponent pressure of the
b isentropic
ratio
exponent
Composition = % weight K (p /p ) C
b o
R-11 Trichlorofluoromethane CCl F 1,10 0,59 2,48
R-12 Dichlorodifluoromethane CCl F 1,12 0,58 2,49
2 2
R-12B1 Bromochlorodifluoromethane CBrClF 1,11 0,58 2,49
R-13 Chlorotrifluoromethane CClF3 1,14 0,58 2,51
R-13B1 Bromotrifluoromethane CBrF 1,13 0,58 2,50
R-14 Carbon tetrafluoride CF 1,16 0,57 2,53
R-22 Chlorodifluoromethane CHClF 1,17 0,57 2,54
R-23 Trifluoromethane CHF 1,19 0,57 2,55
R-30 Methylene chloride CH Cl 1,15 0,57 2,52
2 2
R-32 Difluoromethane CH F 1,24 0,56 2,59
2 2
R-50 Methane CH 1,31 0,54 2,64
R-113 1,1,2-Trichloro-1,2,2-Trifluoroethane CCl FCClF 1,06 0,59 2,45
2 2
R-114 1,2-Dichloro-1,1,2,2-Tetrafluoroethane CClF CClF 1,04 0,60 2,43
2 2
R-115 2-Chloro-1,1,1,2,2-Pentafluoroethane CF CClF 1,09 0,59 2,47
3 2
R-116 Hexafluoroethane CF CF 1,09 0,59 2,47
3 3
R-123 2,2-Dichloro-1,1,1-Trifluoroethane CF CHCl 1,10 0,59 2,48
3 2
R-124 2-Chloro-1,1,1,2-Tetrafluoroethane CF CHClF 1,10 0,58 2,48
R-125 Pentafluoroethane CF CHF 1,10 0,58 2,48
3 2
R-134a 1,1,1,2-Tetrafluoroethane CF CH F 1,12 0,58 2,50
3 2
R-141b 1,1-Dichloro-1-Fluoroethane CCl FCH 1,10 0,58 2,48
2 3
R-142b 1-Chloro-1,1-Difluoroethane CClF2CH3 1,12 0,58 2,50
R-143a 1,1,1-Trifluoroethane CF CH 1,13 0,58 2,50
3 3
R-152a 1,1-Difluoroethane CHF CH 1,15 0,57 2,52
2 3
R-170 Ethane CH CH 1,20 0,56 2,56
3 3
R-218 Octafluoropropane C F 1,07 0,59 2,45
3 8
R-227ea 1,1,1,2,3,3,3-heptafluoropropane CF CHFCF 1,07 0,59 2,46
3 3
R-236fa 1,1,1,3,3,3-hexafluoropropane CF CH CF 1,08 0,59 2,47
3 2 3
R-245fa 1,1,1,3,3-pentafluoropropane CF CH CHF 1,10 0,58 2,48
3 2 2
R-290 Propane CH CH CH 1,19 0,57 2,55
3 2 3
---------------------- Page: 6 ----------------------
SIST EN 13136:2014/oprA1:2017
EN 13136:2013/prA1:2017
Refrigerant Description Formula Isentropic Critical Function
a b
number exponent pressure of the
b isentropic
ratio
exponent
Composition = % weight K (p /p ) C
b o
R-401A R-22/152a/124 (53/13/34) CHClF + 1,15 0,57 2,52
CHF CH +
2 3
CF CHClF
R-401B R-22/152a/124 (61/11/28) CHClF + 1,16 0,57 2,53
CHF CH +
2 3
CF CHClF
R-401C R-22/152a/124 (33/15/52) CHClF + 1,14 0,58 2,51
CHF CH +
2 3
CF CHClF
R-402A R-125/290/22 CF CHF + 1,13 0,58 2,51
3 2
CH CH CH +
3 2 3
CHClF
R-402B R-125/290/22 (38/2/60) CF CHF + 1,15 0,57 2,52
3 2
CH CH CH +
3 2 2
CHClF
R-403A R-22/218/290 (75/29/5) CHClF + 1,15 0,57 2,52
C F +C H
3 8 3 8
R-403B R-22/218/290 (56/39/5) CHClF + 1,13 0,58 2,50
C F +C H
3 8 3 8
R-404A R-125/143a/134a (44/52/4) CF CHF + 1,12 0,58 2,49
3 2
CF CH +
3 3
CF CH F
3 2
R-405A R-22/152a/142b/C318 CHClF + 1,12 0,58 2,50
CHF CH +
2 3
(45/7/5,5/42,5)
CClF CH + C F
2 3 4 8
R-406A R-22/142b/600a (55/41/4) CHClF + 1,10 0,58 2,48
CClF CH +
2 3
CH(CH )
3 3
R-407A R-32/125/134a (20/40/40) CH F + 1,14 0,58 2,51
2 2
CF CHF +
3 2
CF CH F
3 2
R-407B R-32/125/134a (10/70/20) CH F + 1,12 0,58 2,50
2 2
CF CHF +
3 2
CF CH F
3 2
---------------------- Page: 7 ----------------------
SIST EN 13136:2014/oprA1:2017
EN 13136:2013/prA1:2017 (E)
Refrigerant Description Formula Isentropic Critical Function
a b
number exponent pressure of the
isentropic
ratio
exponent
Composition = % weight K (p /p ) C
b o
R-407C R-32/125/134a (23/25/52) CH F + 1,14 0,58 2,51
2 2
CF CHF +
3 2
CF CH F
3 2
R-407D R-32/125/134a (15/15/70) CH F + 1,14 0,58 2,51
2 2
CF CHF +
3 2
CF CH F
3 2
R-407E R-32/125/134a (25/15/60) CH F + 1,15 0,57 2,52
2 2
CF CHF +
3 2
CF CH F
3 2
R-407F R-32/125/134a (30/30/40) CH F + 1,15 0,57 2,52
2 2
CF CHF +
3 2
CF CH F
3 2
R-408A R-125/143a/22 (7/46/47) CF CHF + 1,15 0,58 2,52
3 2
CF CH +
3 3
CHClF
R-409A R-22/124/142b (60/25/15) CHCIF + 1,15 0,57 2,52
CF CHClF+
CH CClF
3 2
R-409B R-22/124/142b (65/25/10) CHCIF + 1,16 0,57 2,53
CF CHClF+
CH CClF
3 2
R-410A R-32/125 (50/50) CH F + 1,17 0,57 2,54
2 2
CF CHF
3 2
R-410B R-32/125 (45/55) CH F + 1,17 0,57 2,53
2 2
CF CHF
3 2
R-411A R-1270/22/152a C H + CHClF + 1,18 0,57 2,54
3 6 2
(1,5/87,5/11,0) CHF CH
2 3
R-412A R-22/218/142b (70/5/25) CHClF + 1,16 0,57 2,53
C F +
3 8
CClF2CH3
R-413A R-218/134a/600a (9/88/3) C F + CF CH F+
3 8 3 2
1,11 0,58 2,49
CH(CH )
3 3
R-414A R-22/124/600a/142b CHClF +
(51,0/28,5/4,0/16,5) CF CHClF+
1,14 0,58 2,51
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.