exported
necessary
plate heat exchanger
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Plateheatexchanger
Generated on 2026-04-13
Natural Language Definition
EN
A plate heat exchanger is a heat exchanger that has heat transfer plates as its primary heat transfer surface.
PT-BR
Um trocador de calor de placas é um trocador de calor que possui placas de transferência de calor como sua superfície primária de transferência de calor.
Formal Axioms
Semi-formal (Aristotelian)
Every plate heat exchanger is a heat exchanger that has component part heat transfer plates at all times.
First-Order Logic Theory
Loading…
▸ Stored override
∀x(PlateHeatExchanger(x) → HeatExchanger(x) ∧ ∃p(HeatTransferPlate(p) ∧ hasComponentPartAtAllTimes(x,p)))
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: PlateHeatExchanger
<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 "2026-10-07"^^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_0000068 rdf:type owl:Class ; # HeatTransferFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000004 # HeatTransferProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000004 # HeatTransferProcess
] ;
rdfs:label "heat transfer function"@en ;
rdfs:label "função de transferência de calor"@pt-br .
### Process type
:COPI_0000004 rdf:type owl:Class ; # HeatTransferProcess
rdfs:subClassOf iof-core:PlannedProcess ;
rdfs:label "heat transfer process"@en ;
rdfs:label "processo de transferência de calor"@pt-br .
:COPI_0000004 # HeatTransferProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom :COPI_0000037 # PortionOfFluid
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom :COPI_0000037 # PortionOfFluid
] .
### Equipment universal: PlateHeatExchanger
:COPI_0000139 rdf:type owl:Class ; # PlateHeatExchanger
rdfs:subClassOf :COPI_0000092 ; # HeatExchanger
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000068 # HeatTransferFunction
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasComponentPartAtAllTimes ;
owl:someValuesFrom :COPI_0000294 # HeatTransferPlate
] ;
rdfs:label "plate heat exchanger"@en ;
rdfs:label "trocador de calor de placas"@pt-br ;
iof-av:naturalLanguageDefinition "A plate heat exchanger is a heat exchanger that has heat transfer plates as its primary heat transfer surface."@en ;
skos:definition "A plate heat exchanger is a heat exchanger that has heat transfer plates as its primary heat transfer surface."@en ;
iof-av:naturalLanguageDefinition "Um trocador de calor de placas é um trocador de calor que possui placas de transferência de calor como sua superfície primária de transferência de calor."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "Every plate heat exchanger is a heat exchanger that has component part heat transfer plates at all times."@en ;
iof-av:firstOrderLogicAxiom "∀x(PlateHeatExchanger(x) → HeatExchanger(x) ∧ ∃p(HeatTransferPlate(p) ∧ hasComponentPartAtAllTimes(x,p)))"@en ;
iof-av:isPrimitive "true"^^xsd:boolean ;
iof-av:primitiveRationale "Using necessary conditions for this constructive type. While the plate-based structure is characteristic, under the Open World Assumption, asserting equivalence could lead to false positives where any equipment with heat transfer plates (e.g., specialized hybrid equipment, multi-function process units) would be automatically classified as a standard plate heat exchanger. Domain expert validation is needed to confirm the structural differentia is sufficient."@en ;
skos:definition "[ISO 15926-4] A <PLATE HEAT EXCHANGER> is a <NON-TUBULAR HEAT EXCHANGER> that uses metal plates to transfer heat between two fluids"@en ;
skos:definition "[CFIHOS] A heat exchanger using plates as the device for separating the two fluids and across which the energy is transferred."@en ;
skos:definition "[POSC Caesar] An indirect contact heat exchanger that separates the hot and cold fluids by plates."@en .
:COPI_0000294 rdf:type owl:Class ; # HeatTransferPlate
rdfs:subClassOf iof-core:MaterialArtifact ;
rdfs:label "MaterialArtifact que possui uma HeatTransferFunction e"@pt-br ;
rdfs:label "heat transfer plate"@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
HeatTransferFunction
⊑ DesignedFunction
Realized in
HeatTransferProcess
⊑ PlannedProcess
All heat exchangers are designed to transfer thermal energy between fluid streams. This is the generic function shared by all heat exchanger types, not a distinguishing function for plate heat exchangers specifically.
2
Genus Determination
HeatExchanger
From the parent candidates, 'heat exchanger' (cfihos) and 'NON-TUBULAR HEAT EXCHANGER' (iso15926) are most specific. HeatExchanger is the appropriate genus as it captures the functional identity while being more specific than Assembly. A heat exchanger is an Assembly because it has causally unified subcomponents (plates, frames, gaskets, connections) that are physically connected and maintainable as a single unit.
3
Necessary Parts
| Part class | Parent | Relation |
|---|---|---|
| HeatTransferPlate | MaterialArtifact | hasComponentPartAtAllTimes |
These are the minimal essential components that every plate heat exchanger must possess. Sealing elements (gaskets, welds, brazing) vary by subtype and should be modeled at the subtype level.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfFluid
— different temperatures, separate flow paths
Outputs (O)
PortionOfFluid
— temperatures adjusted toward equilibrium, separate flow paths maintained
Transformation (T)
thermal energy transfer between fluid streams without mixing
Signature of indirect contact heat transfer: two separate fluid streams enter at different temperatures, exchange thermal energy through the plate surfaces, and exit with adjusted temperatures while maintaining physical separation.
5
Axiom Mode Decision
Necessary conditions only
— modelled as a primitive universal
(⊑, SubClassOf). Identity is grounded in designed
function and cannot be reduced to a property checklist.
Using necessary conditions for this constructive type. While the plate-based structure is characteristic, under the Open World Assumption, asserting equivalence could lead to false positives where any equipment with heat transfer plates (e.g., specialized hybrid equipment, multi-function process units) would be automatically classified as a standard plate heat exchanger. Domain expert validation is needed to confirm the structural differentia is sufficient.
Cross-Standard Observations
All three standards consistently emphasize plates as the defining structural feature. ISO 15926 provides hierarchical context (non-tubular), CFIHOS focuses on separation function, and POSC Caesar emphasizes indirect contact. No significant definitional conflicts observed.
Source Definitions
3 sources
ISO 15926-4
PLATE HEAT EXCHANGER ↗
Definition text withheld (copyrighted standard) — follow the source link above.
CFIHOS
plate heat exchanger
Definition text withheld (copyrighted standard) — follow the source link above.
POSC Caesar
Plate Heat Exchanger ↗
Definition text withheld (copyrighted standard) — follow the source link above.
Metadata
| Ontology | COPI |
| Research group | INF-UFRGS-Ontologies |
| Funding | CNPq INF-UFRGS-ENERGIA |
| Project | OntoKG / Petrobras |
| ID | #52 |
| Cluster | plate heat exchanger |
| Status | exported |
| Axiom mode | necessary |
| Created | 2026-04-13 |
| Updated | 2026-09-08 |
ISA 5.1-2022 P&ID Symbol
wikimedia/heat_exchanger.svg
