1、BRITISH STANDARDQuantities and unitsPart 5: ThermodynamicsICS 01.060nullnull nullnullnullnullnullnullnull nullnullnullnullnullnullnull nullnullnull nullnullnullnullnullnullnullnullnullnull nullnullnullnullnullnull nullnull nullnullnullnullnullnullnullnullnull nullnull nullnullnullnullnullnullnullnul
2、lnull nullnullnullBS EN ISO 80000-5:2013Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-National forewordThis British Standard is the UK implementation of EN ISO 80000-5:2013. It
3、 is identical to ISO 80000-5:2007. It supersedes BS ISO 80000-5:2007, which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee SS/7, General metrology, quantities, units and symbols, to Subcommittee SS7/-/1, General metrology, quantities, units and symbols - Pa
4、nel 1.A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immuni
5、ty from legal obligations.BS EN ISO 80000-5:2013This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2007 The British Standards Institution 2013. Published by BSI Standards Limited 2013Amendments/corrigenda issued since publicationDate Com
6、ments This corrigendum renumbers BS ISO 80000-5:2007 as BS EN ISO 80000-5:2013ISBN 978 0 580 79021 830 June 2013Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EUROPEAN STANDARD
7、NORME EUROPENNE EUROPISCHE NORM EN ISO 80000-5 April 2013 ICS 01.060 English Version Quantities 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) This European Standard
8、 was approved by CEN on 14 March 2013. 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. Up-to-date lists and bibliographical references concerning such
9、national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists 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 l
10、anguage 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, Gre
11、ece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG
12、 Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 80000-5:2013: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo r
13、eproduction or networking permitted without license from IHS-,-,-Foreword The text of ISO 80000-5:2007 has been 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 S
14、tandard shall be given the status of a national standard, either by publication of an identical text or by endorsement, 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
15、of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying 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 Europea
16、n Standard: 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, Sloven
17、ia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 80000-5:2007 has been approved by CEN as EN ISO 80000-5:2013 without any modification. BS EN ISO 80000-5:2013EN ISO 80000-5:2013 (E)Copyright European Committee for Standardization Provided by IHS under
18、 license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-iiiContents Pageiv0Introduction 1Scope 12Normative references 13Names, symbols, and definitions . 1AnnexA(informative) Units based on the foot, pound, second, and some other related units . 20AnnexB(i
19、nformative) Other non-SI units given forinformation, especially regarding the conversion factors . 22BS EN ISO 80000-5:2013 ISO 80000-5:2007 (E)Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license
20、 from IHS-,-,-ivIntroduction0.1 Arrangements of the tablesThe tables of quantities and units in this International Standard are arranged so that the quantities arepresented on the left-hand pages and the units on the corresponding right-hand pages.All units between two full lines onthe right-hand pa
21、ges 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 thepreceding edition is shown in parentheses on the left-hand page under the new number for the quantity; a dashis
22、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 field of this InternationalStandard are given together with theirsymbols and, in most cases, their definitions. Th
23、ese names and symbolsare recommendations. The definitions are given foridentification of the quantities in the International System ofQuantities (ISQ), listed on the left-hand pages of the table; they are not intended to be complete.The scalar, vectorial or tensorial character of quantities is point
24、ed 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 moresymbols are given for one quantity and no special distinction ismade,they are on an equal footing.When two types of italicletters
25、 exist (for example as with and ; and ; a and ;g and ) only one of theseis given. This does not mean that the other isnot equally acceptable. It is recommended that such variantsshould not be given different meanings. A symbol within parentheses implies that it is areserve symbol, to beused when, in
26、 a particular context, the main symbol is in use with a different meaning.In this English edition, thequantity names in Frenchareprinted inan italic font, and are preceded byfr. Thegender of the French name is indicated by (m) for masculine and (f) for feminine, immediately afterthe noun inthe Frenc
27、h name.0.3 Tables of units0.3.1 GeneralThe names ofunits forthe corresponding quantitiesaregiven togetherwith the international symbols and thedefinitions.These unit names are language-dependent, but the symbols are international and the same in alllanguages. For further information, see the SI Broc
28、hure (8th edition 2006) from BIPM andISO80000-1 1).The units are arranged in the following way:a) The coherent SI units are given first. The SI units have been adopted by the General Conference onWeights and Measures (Confrence Gnrale des Poids et Mesures, CGPM). The use of coherent SI units1) To be
29、 published. agBS EN ISO 80000-5:2013 ISO 80000-5:2007 (E)Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-vis recommended; decimal multiples and submultiples formed with the SI pr
30、efixes are recommended eventhough not explicitly mentioned.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 bythe International Organization of LegalMetrology(Organisation International
31、ede Mtrologie Lgale, OIML), or by ISO andIEC, 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) N-SI curently aceptd bythe CIPM foruse withe SIare givn smal print (smaler than textsize) in the “Conversion fac
32、tors and remarks” column.d) No-SIunits thatare not recommended are givenonly in annexes in someparts 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 grou
33、ps:1) units in the CGS system with special names;2) units based on the foot, pound, second, and some other related units.e) Other non-SIunits givenforinformation, especially regardingthe conversion factors, are given in anotherinformative annex.0.3.2 Remark on units for quantities of dimension one,
34、or dimensionless 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 indexPrefixes shall not be used
35、 to form multiples or submultiplesof this unit. Instead of prefixes, powers of10 arerecommended.EXAMPLE2 Reynolds numberConsidering that plane angle is generally expressed as the ratio of two lengths and solid angle as the ratio oftwo areas, in 1995 the CGPMspecified that, in the SI, the radian, sym
36、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 for
37、 derived units to facilitate distinction between quantities ofdifferent kinds but having the same dimension.0.4 Numericalstatements in this International StandardThe sign isused to denote “is exactly equal to”, the sign is used to denote “is approximately equal to”, andthe sign is used to denote “is
38、 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 isrepresented as in the following e
39、xample.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 notationisused whenrepresents the standard uncertainty (estimated standard deviation) in the last
40、digits of . The numericalexample given above may be interpreted to mean that the best estimate of thenumerical valueof thelength (when is expressed in the unit metre) is , and that the unknown value of is believed to lie betweenad with a probability determined by the standarduncertainty and the norm
41、al 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 lBS EN ISO 80000-5:2013 ISO 80000-5:2007 (E)Copyright European Committee for Standardization Provided by IHS under license with CENN
42、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-This page deliberately set blankCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1Quantities and
43、unitsPart5:Thermodynamics1ScopeISO80000-5 gives names, symbols and definitions for quantities and units of thermodynamics. Whereappropriate, conversion factors are also given.2Normative referencesThe following referenced documents are indispensable for the application of this document. For datedrefe
44、rences, only the edition cited applies. For undated references, the latest edition of the referenced document(including any amendments) applies.ISO80000-3:2006, Quantities and units Part3: Space and time2)ISO80000-4:2006, Quantities and units Part4: Mechanics 3)ISO31-0:1992, Quantities andunits Part
45、0:General principles 4)ISO31-8:1992, Quantities and units Part8: Physical chemistry and molecularphysics5)3Names, symbols, and definitionsThe names, symbols, and definitions for quantities and units of thermodynamics are given on the followingpages.2) Revisionof ISO31-1:1992 andISO31-2:1992.3) Revis
46、ion of ISO31-3:1992.4) To be revised as ISO80000-1.5) To be revised as ISO80000-9.BS EN ISO 80000-5:2013 ISO 80000-5:2007 (E)Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2THER
47、MODYNAMICS QUANTITIESItem No. Name SymbolDefinition Remarks5-1(4-1 )thermodynamictemperaturefr temprature (f)thermo-dynamique, () one of the basequantitiesin the International System of Quantities, ISQ, on which theInternational System of Units,SI, is basedThermodynamic temperature isthe quantity th
48、at is measured with a primarythermometer,examples of which are constant volume gasthermometers, acoustic thermometers, or total radiation thermometers.5-2(4-2 )Celsius temperaturefr temprature (f)Celsius, where isthermodynamic temperature (item 5-1) and The thermodynamic temperature is exactly below
49、 the thermodynamic temperature ofthe triple point of water.Tt t = T T 0TT 0 := 275,15KT 0 0,01KBS EN ISO 80000-5:2013 ISO 80000-5:2007 (E)Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from
