EN 14750:2024

SLOVENSKI STANDARD
oSIST prEN 14750:2022
01-december-2022
Železniške naprave - Klimatske naprave v železniških vozilih za mestni, primestni
in regionalni promet - Parametri za določanje udobja in preskusi tipa
Railway applications - Air conditioning for urban, suburban and regional rolling stock -
Comfort parameters and type tests
Bahnanwendungen - Luftbehandlung in Schienenfahrzeugen des städtischen-, Vorort-
und Regionalverkehrs - Behaglichkeitsparameter und Typprüfungen
Applications ferroviaires - Conditionnement de l'air pour matériel roulant urbain, banlieue
et régionaux - Paramètres de bien-être et essais de type
Ta slovenski standard je istoveten z: prEN 14750
ICS:
23.120 Zračniki. Vetrniki. Klimatske Ventilators. Fans. Air-
naprave conditioners
45.060.01 Železniška vozila na splošno Railway rolling stock in
general
oSIST prEN 14750:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 14750:2022
oSIST prEN 14750:2022
DRAFT
EUROPEAN STANDARD
prEN 14750
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2022
ICS 13.040.20; 45.140 Will supersede EN 14750-1:2006, EN 14750-2:2006
English Version
Railway applications - Air conditioning for urban,
suburban and regional rolling stock : Comfort parameters
and type tests
Applications ferroviaires - Conditionnement de l'air Bahnanwendungen - Luftbehandlung in
pour matériel roulant urbain, banlieue et régionaux - Schienenfahrzeugen des städtischen-, Vorort- und
Paramètres de bien-être et essais de type Regionalverkehrs - Behaglichkeitsparameter und
Typprüfungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 256.
If this draft becomes a European Standard, 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.

This draft European Standard 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye 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: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14750:2022 E
worldwide for CEN national Members.

oSIST prEN 14750:2022
prEN 14750:2022 (E)
Contents Page
European foreword . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Parameter selection . 11
5 Vehicle categories . 11
6 Comfort parameters . 13
7 Quality limits . 13
8 Exterior conditions. 14
8.1 Generalities . 14
8.2 Mean exterior temperature range with comfort criteria . 14
8.3 Mean exterior temperature range with functional criteria . 15
9 Performance of the heating and cooling installations . 15
9.1 Design passenger load . 15
9.2 Heating . 15
9.3 Pre-heating . 15
9.4 Cooling . 16
9.5 Pre-cooling . 16
9.6 Stand by operation . 16
10 Control . 17
10.1 General. 17
10.2 Interior temperature setting (T ) . 17
ic
10.3 Interior temperature setting (T ) for vehicles without cooling . 17
ic
11 Comfort condition requirements . 17
11.1 Requirements for comfort zone. 17
11.1.1 Quality regulation for steady-state tests . 17
11.1.2 Quality of regulation for regulation tests . 21
11.1.3 Horizontal range of the extreme interior air temperatures (ΔT ) . 23
H
11.1.4 Vertical range of the extreme interior air temperatures (ΔT ) . 24
V
11.1.5 Temperatures of the surfaces surrounding the comfort zone . 24
11.1.6 Relative humidity for air-conditioned vehicle (RH ) . 26
im
11.1.7 Air speed (AS) . 26
11.2 Requirements for local annexes (T ) . 26
Localization
11.3 Air quantities and quality . 27
11.3.1 Outside air or fresh air . 27
11.3.2 Smoking vehicles . 27
11.3.3 Toilet . 27
11.3.4 Particle air filtration . 27
12 Complementary requirements . 27
12.1 Heat transfer coefficient (k) . 27
oSIST prEN 14750:2022
prEN 14750:2022 (E)
12.1.1 General . 27
12.1.2 Standstill coefficient k of the vehicle . 27
12.2 Condensation . 28
12.3 Door opening/closing cycles . 28
12.4 Solar factor (g) of the windows . 29
12.5 Sealing against water and snow . 29
13 Validation . 29
13.1 General . 29
13.2 Test levels . 29
13.3 Selection of tested cars . 29
13.4 Assessment of comfort criteria based on simulation . 30
13.4.1 Introduction . 30
13.4.2 Comparison between test and simulation of the reference case . 31
13.4.3 Trainset validated by simulation . 31
14 Preliminary verifications . 32
15 Air movement tests . 32
15.1 General remarks . 32
15.2 Air flow rates . 32
15.3 Visualization of the air flow direction . 32
15.4 Air speed test . 32
15.4.1 Critical air speed . 32
15.4.2 Measurement of air speeds . 32
16 Climatic tests . 33
16.1 General remarks . 33
16.2 Pre-heating test . 33
16.2.1 Test level TL1 . 33
16.2.2 Test level TL2 and TL3 . 33
16.3 Pre-cooling test - Test level TL1 . 34
16.4 Regulation test . 34
16.5 Steady-state tests . 34
16.6 Tests at extreme exterior operating conditions . 35
16.7
...