1、 ETSI ES 203 156 V1.2.1 (2014-08) Environmental Engineering (EE); Thermal Management requirements for outdoor enclosures ETSI STANDARD ETSI ETSI ES 203 156 V1.2.1 (2014-08) 2Reference RES/EE-0159 Keywords air flow, cooling capacity, environment, management, outdoor enclosure, thermal ETSI 650 Route
2、des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice The present document can be downloaded from: http:/www.etsi.or
3、g The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between
4、such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information
5、 on the current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may
6、 be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing r
7、estriction extend to reproduction in all media. European Telecommunications Standards Institute 2014. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit
8、 of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI ES 203 156 V1.2.1 (2014-08) 3Contents Intellectual Property Rights 5g3Foreword . 5g3Modal verbs terminology 5g3Introduction 5g31 Scope 6g32 References
9、6g32.1 Normative references . 6g32.2 Informative references 6g33 Definitions, symbols and abbreviations . 7g33.1 Definitions 7g33.2 Symbols 8g33.3 Abbreviations . 8g34 General requirements . 8g34.1 Thermal performance of outdoor enclosures 8g34.2 Environmental class requirements for equipment instal
10、led in outdoor enclosures . 8g34.2.1 Free cooling cabinet 8g34.2.2 Heat exchanger cabinet . 8g34.2.3 Air conditioning cabinet . 9g35 Thermal management . 9g35.1 Standardized definition of cooling capacity . 9g35.2 Maximum acceptable delta T . 10g35.3 The preferable rule for air flow 10g35.3.1 Air fl
11、ow paths of outdoor enclosures 10g35.3.2 Preferable rule for air flow path match . 11g35.3.2.1 Door-mounted TCU 11g35.3.2.2 Roof -mounted TCU . 12g35.3.2.3 Side-mounted TCU . 13g3Annex A (normative): Thermal characterization data of outdoor enclosures to be provided by the manufacturer 14g3A.1 Gener
12、al identification . 14g3A.1.1 Identification 14g3A.1.2 Physical geometry 14g3A.2 Additional data for outdoor enclosures 14g3A.2.1 Mechanical characteristics of outdoor enclosures 15g3A.2.2 Fan/Fan tray 15g3A.2.3 Air filter of outdoor enclosures 15g3A.2.4 Airflow paths 16g3A.2.5 Cooling capacity . 16
13、g3Annex B (informative): Ambient temperature measurement point 17g3B.1 measurement point requirement . 17g3Annex C (informative): Solar radiation 18g3Annex D (informative): Requirements for safety and EMC . 19g3D.1 Requirements for safety 19g3D.2 Requirements for EMC 19g3D.3 Acoustic Noise Level req
14、uirement . 19g3ETSI ETSI ES 203 156 V1.2.1 (2014-08) 4Annex E (informative): Cabinet performance parameters 20g3Annex F (informative): Bibliography . 21g3History 22g3ETSI ETSI ES 203 156 V1.2.1 (2014-08) 5Intellectual Property Rights IPRs essential or potentially essential to the present document ma
15、y have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI s
16、tandards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/ipr.etsi.org). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
17、referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This ETSI Standard (ES) has been produced by ETSI Technical Committee Environmental Engineering (EE). Modal verbs terminology In the present document
18、 “shall“, “shall not“, “should“, “should not“, “may“, “may not“, “need“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliv
19、erables except when used in direct citation. Introduction Outdoor enclosure suppliers are trying to overcome their thermal issues in different solutions being developed. When different equipments and outdoor enclosures from various suppliers are integrated, they can have a detrimental effect on each
20、 other. The present document specifies the thermal management requirements for outdoor enclosures (defined in EN 301 169-1 i.4 and EN 301 169-2 i.5) to prevent outdoor enclosures having a detrimental thermal influence on equipments inside. ETSI ETSI ES 203 156 V1.2.1 (2014-08) 61 Scope The present d
21、ocument describes the thermal management requirements for outdoor enclosures defined in EN 301 169-1 i.4 and EN 301 169-2 i.5. These thermal management requirements to be defined include: a standardized definition of cooling capacity for outdoor enclosures; a maximum acceptable delta T between ambie
22、nt temperature and inside temperature; the preferable rule for air flow inside outdoor enclosures; the environment class for telecommunication equipment of wireline and wireless access network to be installed in outdoor enclosures. Not all these requirement are applicable to outdoor enclosures defin
23、ed in EN 301 169-1 i.4 and EN 301 169-2 i.5; maximum acceptable delta T for equipment in line with EN 301 169-1 i.4 should be considered as a guide to developer. The purpose of the present document is to make it more easy to define the responsibility of equipment manufacturers, cabinet manufacturers
24、 and integrators. EMC, safety and acoustic noise requirements are not parts of the present document. Guidance on these aspects are contained in annex D. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specif
25、ic references, only the cited version applies. For non-specific references, the latest version of the reference document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. N
26、OTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are necessary for the application of the present document. 1 ETSI EN 300 019-1-4: “Environmental Engine
27、ering (EE); Environmental conditions and environmental tests for telecommunications equipment; Part 1-4: Classification of environmental conditions; Stationary use at non-weatherprotected locations“. 2 ETSI EN 300 019-1-3: “Environmental Engineering (EE); Environmental conditions and environmental t
28、ests for telecommunications equipment; Part 1-3: Classification of environmental conditions; Stationary use at weatherprotected locations“. 2.2 Informative references The following referenced documents are not necessary for the application of the present document but they assist the user with regard
29、 to a particular subject area. i.1 ETSI EN 300 386: “Electromagnetic compatibility and Radio spectrum Matters (ERM);Telecommunication network equipment; ElectroMagnetic Compatibility (EMC) requirements“. ETSI ETSI ES 203 156 V1.2.1 (2014-08) 7i.2 ETSI EN 301 489-1: “Electromagnetic compatibility and
30、 Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 1: Common technical requirements“. i.3 IEC 61969-3: “Mechanical structures for electronic equipment - Outdoor enclosures - Part 3: Sectional specification - Climatic, mechanical tests a
31、nd safety aspects for cabinets and cases“. i.4 ETSI EN 301 169-1: “Equipment practice; Engineering requirements for outdoor enclosures; Part 1: Equipped enclosures“. i.5 ETSI EN 301 169-2: “Equipment practice; Engineering requirements for outdoor enclosures; Part 2: Unequipped enclosures“. i.6 ETSI
32、EN 300 119-5: “Environmental Engineering (EE); European telecommunication standard for equipment practice; Part 5: Thermal management“. i.7 CENELEC EN 60950-1: “Information technology equipment - Safety - Part 1: General requirements“. i.8 CENELEC EN 60950-22: “Information technology equipment - Saf
33、ety - Part 22: Equipment installed outdoors“. i.9 ETSI EN 300 753: “Environmental Engineering (EE); Acoustic noise emitted by telecommunications equipment“. i.10 ETSI EN 300 019-2-4: “Environmental Engineering (EE); Environmental conditions and environmental tests for telecommunications equipment; P
34、art 2-4: Specification of environmental tests; Stationary use at non-weatherprotected locations“. i.11 ETSI TR 101 576: “Environmental Engineering (EE); Recommendation for the applicability of environmental classes in outdoor cabinet environment“. 3 Definitions, symbols and abbreviations 3.1 Definit
35、ions For the purposes of the present document, the following terms and definitions apply: air conditioning: cooling technology where an operating refrigerator system is used for cooling the internal air of the enclosure ambient: spatial maximal temperature of the air entering the rack/cabinet cabine
36、t: free-standing and self-supporting enclosure for housing electrical and/or electronics equipment, usually fitted with doors and/or side panels which may or may not be removable free cooling: cooling technology in which the external air is directly used for the inside heat removal; also called dire
37、ct free cooling heat exchanger: cooling technology in which the inside heat removal is provided (actively with fans or passively without fans) without directly use of outside air but using an exchange between two fluids (e.g. air to air or water to air) integrator: end user/operator of telecommunica
38、tion or IT equipment or their agent NOTE: For example an equipment manufacturer could be an operators agent. micro-climate: conditions found within the rack/cabinet creating a local ambient for the subrack outdoor enclosures: enclosure exposed for the outdoor environment, for stationary use at non-w
39、eatherprotected locations, for the protection of electronic equipment installed inside against outdoor environmental conditions (IEC 61969-3 i.3) ETSI ETSI ES 203 156 V1.2.1 (2014-08) 8outdoor location: location for equipment where protection from the weather and other outdoor influences provided by
40、 a building or other structure is limited or non-existent 3.2 Symbols For the purposes of the present document, the following symbols apply: CC cooling capacity of outdoor enclosure W/K Q heat dissipation from equipment inside cabinet W Tambientsurrounding ambient temperature C in which the outdoor
41、enclosure is positioned Tinlettemperature of air at the equipment inlet inside the cabinet C g4574T temperature difference between Tinlet and Tambient K 3.3 Abbreviations For the purposes of the present document, the following abbreviations apply: COP Coefficient Of Performance ICT Information and C
42、ommunication Technology TCU Temperature Control Unit EXAMPLE: Fresh air cooling, heat- exchanger, air-conditioner. 4 General requirements 4.1 Thermal performance of outdoor enclosures The supplier of outdoor enclosures shall design the cabinet so that the product fulfils the outdoor environment as d
43、etailed in EN 300 019-1-4 1, class 4.1. And under this environment class, the cabinet can ensure the equipments whose environment class is defined in clause 4.2 of the present document to work in appropriate micro-climate. To enable the operators/integrators to predict the thermal performance of out
44、door enclosures and to decide the equipment configuration inside, The supplier of outdoor enclosures should provide the relevant thermal characteristics detailed in annex A of the present document. 4.2 Environmental class requirements for equipment installed in outdoor enclosures Possible use of env
45、ironmental class for equipment installed in outdoor enclosures is discussed in TR 101 576 i.11. The outdoor enclosure provides a weather protected environment for the inside equipment. For effective cooling, the equipment inlet air temperature, using some cooling technologies, is higher than the out
46、door air temperature. In the following is considered that the outdoor enclosure is required to meet EN 300 019-1-4 1, class 4.1 with temperature range from -33 g931C to +40 g931C; in this case the climatic conditions for the equipment inside the outdoor cabinet shall be those defined in clauses 4.2.
47、1 to 4.2.3 of the present document. 4.2.1 Free cooling cabinet Climatic conditions in line with Class 3.3 (see EN 300 019-1-3 2). 4.2.2 Heat exchanger cabinet Climatic conditions in line with Class 3.3 (see EN 300 019-1-3 2). ETSI ETSI ES 203 156 V1.2.1 (2014-08) 94.2.3 Air conditioning cabinet Clim
48、atic conditions in line with Class 3.2 (see EN 300 019-1-3 2). On request, the supplier of the equipment shall be able to provide relevant information about the equipment. This information should be described in a way that is specified in EN 300 119-5 i.6, annex A. The outdoor enclosure may need to
49、provide an additional heating solution if the inside equipment cannot start up from cold in a low ambient temperature. Air conditioning requires the use of refrigerants; caution when selecting a refrigerant that it shall not be harmful to the environment. Air conditioning should be limited to critical case e.g. high power (heat) dissipation in related not big volume cabinet. 5 Thermal management 5.1 Standardized definition of cooling capacity The purpose of a standardized definition of cooling
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