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16、iiiContentsPage1 Scope.12 Normative References.13 Terms,Definitions,Acronyms,and Abbreviations.13.1 Definitions.13.2 Acronyms and Abbreviations.34 General Information.34.1 Utility Systems.34.2 Mechanical Descriptions.34.3 Specific Heat Recovery Applications.4Annex A(informative)Steam Systems.5Annex B(informative)Hot Oil and Other Heat Transfer Fluids.12Annex C(informative)Hot Water/Glycol Systems.17Annex D(informative)Watertube WHRU Configurations.20Annex E(informative)Firetube WHRU Configuratio