← Class ReferenceReferência de Classes
Heat exchanger image/svg+xml Heat exchanger 30-07-2012 Jozef Sivek Recuperator recuperator heat exchanger Principle Profile Countercurrent Heatexchanger Efficiency 50 – 70 % 70 – 80 % 85 – 99 % Verticalflat panel Horizontalflat panel Cellular
exported necessary COPI_0000209
Air Cooled Heat Exchanger
IRI: https://www.inf.ufrgs.br/ontologies/copi/COPI_0000209
Generated onGerado em 2026-04-16
Natural Language DefinitionDefinição em Linguagem Natural
EN
An air cooled heat exchanger is a heat exchanger that has finned air cooling surfaces and uses ambient air as the cooling medium to transfer thermal energy from process fluids.
PT-BR
Um trocador de calor resfriado a ar é um trocador de calor que possui superfícies aletadas de resfriamento a ar e usa ar ambiente como meio de resfriamento para transferir energia térmica de fluidos de processo.
Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
Every air cooled heat exchanger is a heat exchanger that has component parts including an air fin system and tube bundle, and participates in air cooling processes.
First-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Necessary condition]∀x (AirCooledHeatExchanger(x) → HeatExchanger(x) ∧ ∃f (HeatTransferFunction(f) ∧ bearerOf(x,f))) — Steps 1–3: genus + identity-giving function [Function axiom: HeatTransferFunction]∀f (HeatTransferFunction(f) → ∀p (realizedIn(f,p) → HeatTransferProcess(p)) ∧ ∃p (HeatTransferProcess(p) ∧ realizedIn(f,p))) — Step 1: ∀ preserves type-type identity; ∃ rules out vacuous functions never realised [Structural differentia (necessary only)]∀x (AirCooledHeatExchanger(x) → ∃hasComponentPartAtAllTimes.AirFinSystem ⊓ ∃participatesIn.AirCoolingProcess) — Step 3: structural property — necessary condition, not sufficient (OWA prevents ≡) [Process participation signature]∀x ∀f ((AirCooledHeatExchanger(x) ∧ HeatTransferFunction(f) ∧ bearerOf(x,f)) → ∃m1 (ProcessFluidPortion(m1) ∧ participatesIn(m1,f)) ∧ ∃m2 (AirPortion(m2) ∧ participatesIn(m2,f)) ∧ ∃e1 (ProcessFluidPortion(e1) ∧ participatesIn(e1,f)) ∧ ∃e2 (AirPortion(e2) ∧ participatesIn(e2,f)) ∧ processType(f,ThermalEnergyTransfer)) — Step 5: typed participants in the realising process
OWL 2 / Turtle
@prefix copi: <https://www.inf.ufrgs.br/ontologies/copi/> . @prefix : <https://www.inf.ufrgs.br/ontologies/copi/> . @prefix owl: <http://www.w3.org/2002/07/owl#> . @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix xsd: <http://www.w3.org/2001/XMLSchema#> . @prefix bfo: <http://purl.obolibrary.org/obo/> . @prefix iof-core: <https://spec.industrialontologies.org/ontology/construct/> . @prefix iof-av: <https://spec.industrialontologies.org/ontology/annotation/> . @prefix skos: <http://www.w3.org/2004/02/skos/core#> . @prefix qudt: <http://qudt.org/schema/qudt/> . @prefix dcterms: <http://purl.org/dc/terms/> . @prefix foaf: <http://xmlns.com/foaf/0.1/> . @prefix apv: <http://inf.ufrgs.br/ontologies/apv#> . ### COPI — Core Ontology for Petroleum Installations ### Class module: AirCooledHeatExchanger <https://www.inf.ufrgs.br/ontologies/copi> rdf:type owl:Ontology ; dcterms:title "Core Ontology for Petroleum Installations (COPI)"@en ; dcterms:title "Ontologia Core para Instalações de Petróleo (COPI)"@pt-br ; dcterms:description "BFO/IOF-Core conformant ontology of equipment classes for petroleum production plants, developed using the five-step RDL enrichment method."@en ; skos:scopeNote "Material artifacts (bfo:material_entity) that (i) are part of a petroleum production plant, and (ii) bear at least one function whose realization involves the transport (e.g. production and injection), processing (separation and other processes), control, monitoring, measurement, containment or offloading of material or energy."@en ; skos:scopeNote "Artefatos materiais (bfo:material_entity) que (i) fazem parte de uma planta de produção de petróleo, e (ii) possuem ao menos uma função cuja realização envolve o transporte (p. ex. produção e injeção), processamento (separação e outros processos), controle, monitoramento, medição, contenção ou escoamento de material ou energia."@pt-br ; skos:scopeNote "COPI provides high-level equipment categories defined by function to demonstrate the defined-class mechanism. Equipment subtypes are annotated with references to CFIHOS and PCA RDL terms. COPI is not a reference data library; organizations should use CFIHOS, PCA RDL, or ISO 14224 for comprehensive equipment classification."@en ; skos:scopeNote "COPI fornece categorias de alto nível de equipamentos definidas por função para demonstrar o mecanismo de classe definida. Os subtipos de equipamentos são anotados com referências aos termos do CFIHOS e do PCA RDL. COPI não é uma biblioteca de dados de referência; organizações devem utilizar o CFIHOS, o PCA RDL ou a ISO 14224 para classificação abrangente de equipamentos."@pt-br ; owl:versionInfo "1.1.0-104-g4d16eff" ; owl:imports <https://spec.industrialontologies.org/ontology/core/Core/> ; owl:imports <http://purl.obolibrary.org/obo/bfo/2020/bfo.owl> ; dcterms:creator "Nicolau Oyhenard dos Santos"@en ; dcterms:contributor "Cauã Antunes" ; dcterms:contributor "Haroldo Rojas" ; dcterms:contributor "Rafael Petry" ; dcterms:contributor "Régis Romeu" ; dcterms:contributor "Mara Abel" ; dcterms:isPartOf <https://inf.ufrgs.br/projetos/OntoKG> ; dcterms:publisher "Universidade Federal do Rio Grande do Sul (UFRGS)"@en ; dcterms:license <https://creativecommons.org/licenses/by/4.0/> ; dcterms:created "2026-04-08"^^xsd:date ; dcterms:modified "2026-07-13"^^xsd:date ; apv:GlobalMinLanguageCoverage "en pt-br" ; apv:ClassURIFormationRule "https://www[.]inf[.]ufrgs[.]br/ontologies/copi/(COPI_[0-9]{7}|[A-Z][A-Za-z0-9]*)" ; apv:ClassMinAnnotationCoverage "rdfs:label https://spec.industrialontologies.org/ontology/annotation/naturalLanguageDefinition" . iof-av:naturalLanguageDefinition rdf:type owl:AnnotationProperty ; apv:MinAnnotationLength 20 . ### Identity-giving function :HeatTransferFunction rdf:type owl:Class ; rdfs:subClassOf iof-core:DesignedFunction ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:allValuesFrom :HeatTransferProcess ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:someValuesFrom :HeatTransferProcess ] ; rdfs:label "heat transfer function"@en ; rdfs:label "função de transferência de calor"@pt-br . ### Process type :HeatTransferProcess rdf:type owl:Class ; rdfs:subClassOf iof-core:PlannedProcess ; rdfs:label "heat transfer process"@en ; rdfs:label "processo de transferência de calor"@pt-br . :HeatTransferProcess rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :ProcessFluidPortion ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :AirPortion ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasSpecifiedOutput ; owl:someValuesFrom :ProcessFluidPortion ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasSpecifiedOutput ; owl:someValuesFrom :AirPortion ] . ### Equipment universal: AirCooledHeatExchanger :AirCooledHeatExchanger rdf:type owl:Class ; rdfs:subClassOf :HeatExchanger ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :HeatTransferFunction ] ; rdfs:label "air cooled heat exchanger"@en ; rdfs:label "trocador de calor resfriado a ar"@pt-br ; iof-av:naturalLanguageDefinition "An air cooled heat exchanger is a heat exchanger that has finned air cooling surfaces and uses ambient air as the cooling medium to transfer thermal energy from process fluids."@en ; skos:definition "An air cooled heat exchanger is a heat exchanger that has finned air cooling surfaces and uses ambient air as the cooling medium to transfer thermal energy from process fluids."@en ; iof-av:naturalLanguageDefinition "Um trocador de calor resfriado a ar é um trocador de calor que possui superfícies aletadas de resfriamento a ar e usa ar ambiente como meio de resfriamento para transferir energia térmica de fluidos de processo."@pt-br ; iof-av:semiFormalNaturalLanguageAxiom "Every air cooled heat exchanger is a heat exchanger that has component parts including an air fin system and tube bundle, and participates in air cooling processes."@en ; iof-av:firstOrderLogicAxiom "∀x(AirCooledHeatExchanger(x) → HeatExchanger(x) ∧ ∃y(AirFinSystem(y) ∧ hasComponentPartAtAllTimes(x,y)) ∧ ∃z(TubeBundle(z) ∧ hasComponentPartAtAllTimes(x,z)) ∧ ∃p(AirCoolingProcess(p) ∧ participatesIn(x,p)))"@en ; iof-av:isPrimitive "true"^^xsd:boolean ; iof-av:primitiveRationale "Under the Open World Assumption, defining air cooling constructively as sufficient conditions could lead to false positives. Complex hybrid equipment or specialized configurations with air cooling components might be inappropriately classified. Starting with necessary conditions allows for proper validation by domain experts before upgrading to equivalence."@en ; # Disjointness: AirCooledHeatExchanger and ShellAndTubeHeatExchanger [] rdf:type owl:AllDisjointClasses ; owl:members ( :AirCooledHeatExchanger :ShellAndTubeHeatExchanger ) .
Axiomatization Decision LogRegistro de Decisões
1 Identity-Giving FunctionFunção Identitária
Function class
HeatTransferFunction ⊑ DesignedFunction
Realized in
HeatTransferProcess ⊑ PlannedProcess
All heat exchangers, including air cooled ones, have the same identity-giving function: transferring thermal energy between fluid streams. The air cooling aspect is a constructive constraint on how this function is realized, not a different function.
2 Genus DeterminationDeterminação do Gênero
heat exchangerbfo:Object (BFO_0000030)
Heat exchanger is the most specific appropriate superclass from the parent candidates and is already enriched in our ontology. All definitions consistently position this as a specialized type of heat exchanger. The BFO root is Assembly because heat exchangers are causally unified objects with removable subcomponents (tubes, headers, fins, fans) assembled into a single maintainable unit.
3 Differentia SpecificaDiferença Específica
∃hasComponentPartAtAllTimes.AirFinSystem ⊓ ∃participatesIn.AirCoolingProcess

Has finned surfaces for air heat transfer and participates in processes where air serves as the cooling medium.

The differentia captures the two essential constructive features: (1) finned surfaces designed for air heat transfer, and (2) participation in air cooling processes. These are minimal additional conditions beyond the generic heat transfer function inherited from HeatExchanger.
4 Necessary PartsPartes Necessárias

No necessary parts recorded.

These parts are universally present in air cooled heat exchangers. Fans are subtype-specific (forced draft vs natural draft) so not included at this level.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
{'type': 'ProcessFluidPortion', 'count': 1, 'constraints': 'hot process fluid requiring cooling'}, {'type': 'AirPortion', 'count': 1, 'constraints': 'ambient air for cooling'}
OutputsSaídas
{'type': 'ProcessFluidPortion', 'count': 1, 'constraints': 'cooled process fluid'}, {'type': 'AirPortion', 'count': 1, 'constraints': 'heated air discharged to atmosphere'}
TransformationTransformação
thermal energy transfer from process fluid to air
Distinguishes from other heat exchanger types by the specific use of air as the cooling medium, with atmospheric discharge rather than closed loop cooling
Disjoint WithDisjunto com
shell and tube heat exchanger
C?: shell and tube heat exchanger [kind_ambiguous]. Evaporative coolers use water evaporation rather than direct air cooling. Shell and tube heat exchangers use enclosed liquid cooling media, incompatible with the atmospheric air cooling signature.
MetadataMetadados
COPI IDCOPI IDCOPI_0000209
IRIIRIhttps://www.inf.ufrgs.br/ontologies/copi/COPI_0000209
StatusStatusexported
Axiom modeModonecessary
CreatedCriado2026-04-16
UpdatedAtualizado2026-06-28
LLM modelModelo LLMclaude-sonnet-4-20250514
VersionVersão2026-07-13
Heat exchanger image/svg+xml Heat exchanger 30-07-2012 Jozef Sivek Recuperator recuperator heat exchanger Principle Profile Countercurrent Heatexchanger Efficiency 50 – 70 % 70 – 80 % 85 – 99 % Verticalflat panel Horizontalflat panel Cellular
ISA 5.1-2022 — wikimedia/heat_exchanger.svg
Quick factsDados rápidos
GenusGêneroheat exchanger
Root classClasse raizAssembly
Axiom modeModonecessary
FunctionFunçãoHeatTransferFunction
ProcessProcessoHeatTransferProcess
PartsPartes0
Source DefinitionsDefinições nas Fontes 3 sources
ISO 15926-4 AIR COOLED HEAT EXCHANGER
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.
CFIHOS air cooled heat exchanger
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POSC Caesar Air Cooled Heat Exchanger
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.