1、August 2013 Translation by DIN-Sprachendienst.English price group 14No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、 01.060; 17.200.01!%(=G“2052636www.din.deDDIN EN ISO 80000-5Quantities and units Part 5: Thermodynamics (ISO 80000-5:2007);English version EN ISO 80000-5:2013,English translation of DIN EN ISO 80000-5:2013-08Gren und Einheiten Teil 5: Thermodynamik (ISO 80000-5:2007);Englische Fassung EN ISO 80000-5
3、:2013,Englische bersetzung von DIN EN ISO 80000-5:2013-08Grandeurs et units Partie 5: Thermodynamique (ISO 80000-5:2007);Version anglaise EN ISO 80000-5:2013,Traduction anglaise de DIN EN ISO 80000-5:2013-08www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be c
4、onsidered authoritative.3108.13 DIN EN ISO 80000-5:2013-08 2 A comma is used as the decimal marker. National foreword The text of ISO 80000-5:2007 has been prepared by Technical Committee ISO/TC 12 “Quantities and units” (Secretariat: SIS, Sweden) and has been taken over as EN ISO 80000-5:2013 by th
5、e CEN Technical Board (BT). The responsible German body involved in its preparation was the Normenausschuss Technische Grundlagen (Fundamental Technical Standards Committee), Working Group NA 152-01-05-01 AK Begriffe und Formelzeichen der Thermodynamik. ISO 80000 consists of the following parts, und
6、er the general title Quantities and units: Part 1: General Part 2: Mathematical signs and symbols to be used in the natural sciences and technology) Part 3: Space and time Part 4: Mechanics Part 5: Thermodynamics Part 7: Light Part 8: Acoustics Part 9: Physical chemistry and molecular physics Part 1
7、0: Atomic and nuclear physics Part 11: Characteristic numbers Part 12: Solid state physics IEC 80000 consists of the following parts, under the general title Quantities and units: Part 6: Electromagnetism Part 13: Information science and technology Part 14: Telebiometrics related to human physiology
8、 The DIN Standards corresponding to the International Standards referred to in Clause 2 of this document are as follows: ISO 80000-1 DIN EN ISO 80000-1 ISO 80000-3 DIN EN ISO 80000-3 ISO 80000-4 DIN EN ISO 80000-4 ISO 80000-9 DIN EN ISO 80000-9 )The title of the second edition of ISO 80000-2 will be
9、 shortened to read Mathematics. DIN EN ISO 80000-5:2013-08 3 National Annex NA (informative) Bibliography DIN EN 80000-6, Quantities and units Part 6: Electromagnetism DIN EN 80000-13, Quantities and units Part 13: Information science and technology DIN EN 80000-14, Quantities and units Part 14: Tel
10、ebiometrics related to human physiology DIN EN ISO 80000-1, Quantities and units Part 1: General DIN EN ISO 80000-2, Quantities and units Part 2: Mathematical signs and symbols to be used in the natural sciences and technology DIN EN ISO 80000-3, Quantities and units Part 3: Space and time DIN EN IS
11、O 80000-4, Quantities and units Part 4: Mechanics DIN EN ISO 80000-5, Quantities and units Part 5: Thermodynamics DIN EN ISO 80000-7), Quantities and units Part 7: Light DIN EN ISO 80000-8, Quantities and units Part 8: Acoustics DIN EN ISO 80000-9, Quantities and units Part 9: Physical chemistry and
12、 molecular physics DIN EN ISO 80000-10, Quantities and units Part 10: Atomic and nuclear physics DIN EN ISO 80000-12, Quantities and units Part 12: Solid state physics )In preparation. DIN EN ISO 80000-5:2013-08 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN
13、ISO 80000-5 April 2013 ICS 01.060 English Version This European Standard was approved by CEN on 14 March 2013. CEN and CENELEC 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 with
14、out any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN and CENELEC member. This European Standard exists in three official versions (English, French, German). A version i
15、n any other language made by translation under the responsibility of a CEN and CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN and CENELEC members are the national standards bodies and national electrotechnical
16、committees 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, Slovakia, Slov
17、enia, Spain, Sweden, Switzerland, Turkey and United Kingdom. CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN/CENELEC All rights of exploitation in any form and by any means reserved worldwide for CEN national Members and for CENELEC Members. Ref. No. EN 80000-5:2013 E Quant
18、ities and units - Part 5: Thermodynamics (ISO 80000-5:2007) Grandeurs et units - Partie 5: Thermodynamique (ISO 80000-5:2007) Gren und Einheiten - Teil 5: Thermodynamik (ISO 80000-5:2007) Contents DIN EN ISO 80000-5:2013-08 EN ISO 80000-5:2013 (E) 2 PageForeword . 30 Introduction 41 Scope 62 Normati
19、ve references 63 Names, symbols, and definitions . 6Annex A (informative) Units based on the foot, pound, second, and some other related units 25AnnexB(informative) Other non-SI units given for information, especially regarding the conversion factors . 27Foreword The text of ISO 80000-5:2007 has bee
20、n prepared by Technical Committee ISO/TC 12 “Quantities and units” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 80000-5:2013. This European Standard shall be given the status of a national standard, either by publication of an identical text or by end
21、orsement, at the latest by October 2013, and conflicting national standards shall be withdrawn at the latest by October 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for ide
22、ntifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yug
23、oslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 80000-5:2007
24、 has been approved by CEN as EN ISO 80000-5:2013 without any modification. DIN EN ISO 80000-5:2013-08 EN ISO 80000-5:2013 (E) 3 Introduction0.1 Arrangements of the tablesThe tables of quantities and units in this International Standard are arranged so that the quantities arepresented on the left-han
25、d pages and the units on the corresponding right-hand pages.All units between two full lines on the right-hand pages belong to the quantities between the corresponding fulllines on the left-hand pages.Where the numbering of an item has been changed in the revision of a part of ISO31, the number in t
26、hepreceding edition is shown in parentheses on the left-hand page under the new number for the quantity; a dashis used to indicate that the item in question did not appear in the preceding edition.0.2 Tables of quantitiesThe names in English and in French of the most important quantities within the
27、field of this InternationalStandard are given together with their symbols and, in most cases, their definitions. These names and symbolsare recommendations. The definitions are given for identification of the quantities in the International System ofQuantities (ISQ), listed on the left-hand pages of
28、 the table; they are not intended to be complete.The scalar, vectorial or tensorial character of quantities is pointed out, especially when this is needed for thedefinitions.In most cases only one name and only one symbol for the quantity are given; where two or more names or twoor more symbols are
29、given for one quantity and no special distinction is made, they are on an equal footing.When two types of italic letters exist (for example as with and ; and ; a and ; g and ) only one of theseis given. This does not mean that the other is not equally acceptable. It is recommended that such variants
30、should not be given different meanings. A symbol within parentheses implies that it is a reserve symbol, to beused when, in a particular context, the main symbol is in use with a different meaning.In this English edition, the quantity names in French are printed in an italic font, and are preceded b
31、y fr. Thegender of the French name is indicated by (m) for masculine and (f) for feminine, immediately after the noun inthe French name.0.3 Tables of units0.3.1 GeneralThe names of units for the corresponding quantities are given together with the international symbols and thedefinitions. These unit
32、 names are language-dependent, but the symbols are international and the same in alllanguages. For further information, see the SI Brochure (8thedition 2006) from BIPM and ISO80000-1.The units are arranged in the following way:a) The coherent SI units are given first. The SI units have been adopted
33、by the General Conference onWeights and Measures (Confrence Gnrale des Poids et Mesures, CGPM). The use of coherent SI units a gis recommended; decimal multiples and submultiples formed with the SI prefixes are recommended eventhough not explicitly mentioned.DIN EN ISO 80000-5:2013-08 EN ISO 80000-5
34、:2013 (E) 4 b) Some non-SI units are then given, being those accepted by the International Committee for Weights andMeasures (Comit International des Poids et Mesures, CIPM), or by the International Organization of LegalMetrology (Organisation Internationale de Mtrologie Lgale, OIML), or by ISO and
35、IEC, for use with the SI.Such units are separated from the SI units in the item by use of a broken line between the SI units and theother units.c) Non-SI units currently accepted by the CIPM for use with the SI are given in small print (smaller than the textsize) in the “Conversion factors and remar
36、ks” column.d) Non-SI units that are not recommended are given only in annexes in some parts of this InternationalStandard. These annexes are informative, in the first place for the conversion factors, and are not integralparts of the standard. These deprecated units are arranged in two groups:1) uni
37、ts in the CGS system with special names;2) units based on the foot, pound, second, and some other related units.e) Other non-SI units given for information, especially regarding the conversion factors, are given in anotherinformative annex.0.3.2 Remark on units for quantities of dimension one, or di
38、mensionless quantitiesThe coherent unit for any quantity of dimension one, also called a dimensionless quantity, is the number one,symbol1. When the value of such a quantity is expressed, the unit symbol1 is generally not written outexplicitly.EXAMPLE1 Refractive index Prefixes shall not be used to
39、form multiples or submultiples of this unit. Instead of prefixes, powers of 10 arerecommended.EXAMPLE2 Reynolds number Considering that plane angle is generally expressed as the ratio of two lengths and solid angle as the ratio oftwo areas, in 1995 the CGPM specified that, in the SI, the radian, sym
40、bol rad, and steradian, symbol sr, aredimensionless derived units. This implies that the quantities plane angle and solid angle are considered asderived quantities of dimension one. The units radian and steradian are thus equal to one; they may either beomitted, or they may be used in expressions fo
41、r derived units to facilitate distinction between quantities ofdifferent kinds but having the same dimension.0.4 Numerical statements in this International StandardThe sign is used to denote “is exactly equal to”, the sign is used to denote “is approximately equal to”, andthe sign is used to denote
42、“is by definition equal to”.Numerical values of physical quantities that have been experimentally determined always have an associatedmeasurement uncertainty. This uncertainty should always be specified. In this International Standard, themagnitude of the uncertainty is represented as in the followi
43、ng example.EXAMPLEIn this example, , the numerical value of the uncertainty indicated in parentheses is assumed toapply to the last (and least significant) digits of the numerical value of the length . This notation is used whenrepresents the standard uncertainty (estimated standard deviation) in th
44、e last digits of . The numericalexample given above may be interpreted to mean that the best estimate of the numerical value of the length (when is expressed in the unit metre) is , and that the unknown value of is believed to lie betweenand with a pr obability determined by the standarduncertainty
45、and the normal probability distribution of the values of .n = 1,531 = 1,53Re = 1,32103= :=l = 2,34782(32) ml = a(b) m ba lb all 2,34782 l(2,347820,00032)m (2,34782 + 0,00032)m0,00032m lDIN EN ISO 80000-5:2013-08 EN ISO 80000-5:2013 (E) 5 1ScopeISO80000-5 gives names, symbols and definitions for quan
46、tities and units of thermodynamics. Whereappropriate, conversion factors are also given.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For datedreferences, only the edition cited applies. For undated references, the latest edition of
47、the referenced document(including any amendments) applies.ISO80000-3:2006, Quantities and units Part3: Space and timeISO80000-4:2006, Quantities and units Part4: Mechanics3 Names, symbols, and definitionsThe names, symbols, and definitions for quantities and units of thermodynamics are given on the
48、followingpages.ISO 80000-1:2009, Quantities and units Part 1: GeneralISO 80000-9:2009, Quantities and units Part 9: Physical chemistry and molecular physicsDIN EN ISO 80000-5:2013-08 EN ISO 80000-5:2013 (E) 6 THERMODYNAMICS QUANTITIESItem No. Name Symbol Definition Remarks5-1(4-1)thermodynamictemperaturefr temprature (f)thermo-dynamique, ( ) one of the base quantities in the International System of Quantities, ISQ, on which the International System of Units, SI, is ba
