exported
equivalent
deaerator
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Deaerator
Generated on 2026-04-16
Natural Language Definition
EN
A deaerator is a separator designed to remove dissolved gases from liquid streams through specialized degassing processes.
PT-BR
Um desaerador é um separador projetado para remover gases dissolvidos de correntes líquidas através de processos especializados de desgaseificação.
Formal Axioms
Semi-formal (Aristotelian)
Every deaerator is a separator that bears a deaeration function for removing dissolved gases from liquids
First-Order Logic Theory
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▸ Stored override
∀x(Deaerator(x) ↔ (Separator(x) ∧ ∃f(DeaerationFunction(f) ∧ bearerOf(x,f))))
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: Deaerator
<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" ;
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 "2026-10-08"^^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
:COPI_0000453 rdf:type owl:Class ; # DeaerationFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000454 # DeaerationProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000454 # DeaerationProcess
] ;
rdfs:label "deaeration function"@en ;
rdfs:label "função de desaeração"@pt-br .
### Process type
:COPI_0000454 rdf:type owl:Class ; # DeaerationProcess
rdfs:subClassOf :COPI_0000005 ; # MassTransfer
rdfs:label "deaeration process"@en ;
rdfs:label "processo de desaeração"@pt-br .
:COPI_0000005 rdf:type owl:Class . # MassTransfer
:COPI_0000454 # DeaerationProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom :COPI_0000038 # PortionOfLiquid
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom :COPI_0000038 # PortionOfLiquid
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom :COPI_0000039 # PortionOfGas
] .
### Equipment universal: Deaerator
:COPI_0000240 rdf:type owl:Class ; # Deaerator
owl:equivalentClass [
rdf:type owl:Class ;
owl:intersectionOf (
:COPI_0000084 # Separator
[
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000453 # DeaerationFunction
]
)
] ;
rdfs:label "deaerator"@en ;
rdfs:label "desaerador"@pt-br ;
iof-av:naturalLanguageDefinition "A deaerator is a separator designed to remove dissolved gases from liquid streams through specialized degassing processes."@en ;
skos:definition "A deaerator is a separator designed to remove dissolved gases from liquid streams through specialized degassing processes."@en ;
iof-av:naturalLanguageDefinition "Um desaerador é um separador projetado para remover gases dissolvidos de correntes líquidas através de processos especializados de desgaseificação."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "Every deaerator is a separator that bears a deaeration function for removing dissolved gases from liquids"@en ;
iof-av:firstOrderLogicAxiom "∀x(Deaerator(x) ↔ (Separator(x) ∧ ∃f(DeaerationFunction(f) ∧ bearerOf(x,f))))"@en ;
skos:definition "[ISO 15926-4] A <DEAERATOR> is an <ARTEFACT> and a <SEPARATOR> intended to release dissolved gases from a liquid, typically to release oxygen and carbon dioxide from water"@en ;
skos:definition "[OnePetro] Devices used to separate gasses from liquids."@en .
# Disjointness: Deaerator and Filter
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000240 :COPI_0000081 ) . # Deaerator, Filter
# Disjointness: Deaerator and Centrifuge
[] rdf:type owl:AllDisjointClasses ;
owl:members ( :COPI_0000240 :COPI_0000225 ) . # Deaerator, Centrifuge
Axiomatization Decision Log
1
Identity-Giving Function
Function class
DeaerationFunction
⊑ DesignedFunction
Realized in
DeaerationProcess
⊑ MassTransfer
The identity-giving function is the removal of dissolved gases from liquid streams. This is a specific type of separation function focused on gas-liquid separation where the dissolved gas component is extracted from the liquid carrier phase.
2
Genus Determination
Separator
ISO 15926 explicitly states that a deaerator is a separator, and this is the most specific appropriate superclass. The genus 'Separator' is already enriched in our ontology with function SeparationFunction and genus Vessel. This provides the correct inheritance path for separation equipment.
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
These parts define the basic flow configuration needed for any deaeration process: liquid input, degassing space, gas removal, and treated liquid output.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfLiquid
— contains dissolved gases, typically oxygen and CO2
Outputs (O)
PortionOfLiquid
— reduced dissolved gas content
PortionOfGas
— released dissolved gases
Transformation (T)
phase transfer of dissolved gas species from liquid to gas phase
Single liquid input stream with dissolved gases produces a degassed liquid stream plus a gas stream containing the released gases. The transformation involves mass transfer from dissolved to free gas phase.
5
Axiom Mode Decision
Necessary + Sufficient
— modelled as a defined class
(≡, EquivalentClass). Automatic classification is
appropriate for this concept.
Disjointness Axioms
Filter
Centrifuge
C1: Centrifuge. C2: Filter. Filters handle solid-liquid separation with different process signatures, while centrifuges use density-based separation mechanisms incompatible with dissolved gas removal processes
Cross-Standard Observations
ISO 15926 provides more detailed definition specifying oxygen and CO2 removal from water, while OnePetro gives broader gas-liquid separation definition. The ISO definition is more precise and industry-relevant for deaeration applications.
