Class HeatExchangerMechanicalDesign

java.lang.Object

neqsim.process.mechanicaldesign.MechanicalDesign

neqsim.process.mechanicaldesign.heatexchanger.HeatExchangerMechanicalDesign

All Implemented Interfaces:

Serializable

public class HeatExchangerMechanicalDesign
extends MechanicalDesign

Mechanical design for a generic heat exchanger. Provides detailed sizing estimates for supported exchanger configurations and selects a preferred option based on configurable criteria.

The implementation supports both full two-stream heat exchangers and single-stream heaters or coolers that only know their process-side conditions. When the utility side is described through UtilityStreamSpecification the sizing routine derives approximate UA and approach temperatures before computing a simplified geometric layout.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	HeatExchangerMechanicalDesign.SelectionCriterion	Ranking metric for automatic exchanger-type selection.

Field Summary

Fields

Modifier and Type	Field	Description
private double	approachTemperature
private double	calculatedUA
private List<HeatExchangerType>	candidateTypes
private static final double	DEFAULT_OVERALL_HEAT_TRANSFER_COEFFICIENT
private double	logMeanTemperatureDifference
private HeatExchangerType	manualSelection
private HeatExchangerSizingResult	selectedSizingResult
private HeatExchangerMechanicalDesign.SelectionCriterion	selectionCriterion
private static final long	serialVersionUID	Serialization version UID.
private List<HeatExchangerSizingResult>	sizingResults
private double	usedOverallHeatTransferCoefficient

Fields inherited from class MechanicalDesign

costEstimate, designStandard, innerDiameter, maxDesignDuty, maxDesignGassVolumeFlow, maxDesignOilVolumeFlow, maxDesignPower, maxDesignVolumeFlow, maxDesignWaterVolumeFlow, minDesignDuty, minDesignGassVolumeFLow, minDesignOilFLow, minDesignPower, minDesignVolumeFLow, minDesignWaterVolumeFLow, moduleHeight, moduleLength, moduleWidth, outerDiameter, tantanLength, wallThickness, weightElectroInstrument, weightNozzle, weightPiping, weightStructualSteel, weightVessel, weigthInternals, weigthVesselShell

Constructor Summary

Constructors

Constructor	Description
HeatExchangerMechanicalDesign(ProcessEquipmentInterface equipment)	Constructor for HeatExchangerMechanicalDesign.

Method Summary

Modifier and Type	Method	Description
private void	applySelectedSizing()
private void	buildSizingResults(HeatExchanger exchanger, double duty, boolean useTypeSpecificCoefficient)
void	calcDesign()	calcDesign.
private double	calculateLmtd(double deltaT1, double deltaT2)
private double	determineDuty(ProcessEquipmentInterface equipment)
private double[]	determineSingleStreamTemperatures(Heater heater, UtilityStreamSpecification spec, double duty)
private double[]	determineTwoStreamTemperatures(HeatExchanger exchanger)
private List<HeatExchangerType>	determineTypesToEvaluate()
private void	finalizeThermalEstimates(double duty)
double	getApproachTemperature()
double	getCalculatedUA()
List<HeatExchangerType>	getCandidateTypes()
double	getLogMeanTemperatureDifference()
HeatExchangerType	getManualSelection()
HeatExchangerSizingResult	getSelectedSizingResult()
HeatExchangerType	getSelectedType()
HeatExchangerMechanicalDesign.SelectionCriterion	getSelectionCriterion()
List<HeatExchangerSizingResult>	getSizingResults()
String	getSizingSummary()
double	getUsedOverallHeatTransferCoefficient()
private void	handleSingleStreamThermalData(Heater heater, UtilityStreamSpecification specification, double duty)
private void	handleTwoStreamThermalData(HeatExchanger exchanger, double duty)
private void	selectPreferredResult()
void	setCandidateTypes(List<HeatExchangerType> types)
void	setCandidateTypes(HeatExchangerType... types)
void	setManualSelection(HeatExchangerType manualSelection)
void	setSelectionCriterion(HeatExchangerMechanicalDesign.SelectionCriterion selectionCriterion)

Methods inherited from class MechanicalDesign

addDesignDataSource, displayResults, equals, getApplicableStandards, getCompanySpecificDesignStandards, getConstrutionMaterial, getCorrosionAllowance, getCostEstimate, getDefaultLiquidDensity, getDefaultLiquidViscosity, getDesignCorrosionAllowance, getDesignDataSources, getDesignJointEfficiency, getDesignLimitData, getDesignMaxPressureLimit, getDesignMaxTemperatureLimit, getDesignMinPressureLimit, getDesignMinTemperatureLimit, getDesignStandard, getInnerDiameter, getJointEfficiency, getLastMarginResult, getMaterialDesignStandard, getMaterialPipeDesignStandard, getMaxAllowableStress, getMaxDesignGassVolumeFlow, getMaxDesignOilVolumeFlow, getMaxDesignPressure, getMaxDesignVolumeFlow, getMaxDesignWaterVolumeFlow, getMaxOperationPressure, getMaxOperationTemperature, getMinDesignGassVolumeFLow, getMinDesignOilFLow, getMinDesignPressure, getMinDesignVolumeFLow, getMinDesignWaterVolumeFLow, getMinOperationPressure, getMinOperationTemperature, getModuleHeight, getModuleLength, getModuleWidth, getOuterDiameter, getPressureMarginFactor, getProcessEquipment, getRecommendedStandards, getResponse, getTantanLength, getTensileStrength, getVolumeTotal, getWallThickness, getWeightElectroInstrument, getWeightNozzle, getWeightPiping, getWeightStructualSteel, getWeightTotal, getWeightVessel, getWeigthInternals, getWeigthVesselShell, hasDesignStandard, hashCode, initMechanicalDesign, isHasSetCompanySpecificDesignStandards, readDesignSpecifications, setCompanySpecificDesignStandards, setConstrutionMaterial, setCorrosionAllowance, setDefaultLiquidDensity, setDefaultLiquidViscosity, setDesign, setDesignDataSource, setDesignDataSources, setDesignStandard, setDesignStandard, setDesignStandard, setDesignStandard, setDesignStandards, setHasSetCompanySpecificDesignStandards, setInnerDiameter, setJointEfficiency, setMaterialDesignStandard, setMaterialPipeDesignStandard, setMaxDesignDuty, setMaxDesignGassVolumeFlow, setMaxDesignOilVolumeFlow, setMaxDesignPower, setMaxDesignVolumeFlow, setMaxDesignWaterVolumeFlow, setMaxOperationPressure, setMaxOperationTemperature, setMinDesignDuty, setMinDesignGassVolumeFLow, setMinDesignOilFLow, setMinDesignPower, setMinDesignVolumeFLow, setMinDesignWaterVolumeFLow, setMinOperationPressure, setMinOperationTemperature, setModuleHeight, setModuleLength, setModuleWidth, setOuterDiameter, setPressureMarginFactor, setProcessEquipment, setTantanLength, setTensileStrength, setWallThickness, setWeightElectroInstrument, setWeightNozzle, setWeightPiping, setWeightStructualSteel, setWeightTotal, setWeightVessel, setWeigthInternals, setWeigthVesselShell, toCompactJson, toJson, validateOperatingEnvelope, validateOperatingEnvelope

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Details

serialVersionUID

private static final long serialVersionUID

Serialization version UID.

See Also:

• Constant Field Values

DEFAULT_OVERALL_HEAT_TRANSFER_COEFFICIENT

private static final double DEFAULT_OVERALL_HEAT_TRANSFER_COEFFICIENT

See Also:

• Constant Field Values

usedOverallHeatTransferCoefficient

private double usedOverallHeatTransferCoefficient

calculatedUA

private double calculatedUA

logMeanTemperatureDifference

private double logMeanTemperatureDifference

approachTemperature

private double approachTemperature

candidateTypes

private List<HeatExchangerType> candidateTypes

selectionCriterion

private HeatExchangerMechanicalDesign.SelectionCriterion selectionCriterion

manualSelection

private HeatExchangerType manualSelection

sizingResults

private List<HeatExchangerSizingResult> sizingResults

selectedSizingResult

private HeatExchangerSizingResult selectedSizingResult

Constructor Details

HeatExchangerMechanicalDesign

public HeatExchangerMechanicalDesign(ProcessEquipmentInterface equipment)

Constructor for HeatExchangerMechanicalDesign.

Parameters:

equipment - ProcessEquipmentInterface object

Method Details

calcDesign

public void calcDesign()

calcDesign.

Overrides:

calcDesign in class MechanicalDesign

handleTwoStreamThermalData

private void handleTwoStreamThermalData(HeatExchanger exchanger,
 double duty)

handleSingleStreamThermalData

private void handleSingleStreamThermalData(Heater heater,
 UtilityStreamSpecification specification,
 double duty)

finalizeThermalEstimates

private void finalizeThermalEstimates(double duty)

buildSizingResults

private void buildSizingResults(HeatExchanger exchanger,
 double duty,
 boolean useTypeSpecificCoefficient)

determineTypesToEvaluate

private List<HeatExchangerType> determineTypesToEvaluate()

selectPreferredResult

private void selectPreferredResult()

applySelectedSizing

private void applySelectedSizing()

setCandidateTypes

public void setCandidateTypes(List<HeatExchangerType> types)

setCandidateTypes

public void setCandidateTypes(HeatExchangerType... types)

getCandidateTypes

public List<HeatExchangerType> getCandidateTypes()

getSelectionCriterion

public HeatExchangerMechanicalDesign.SelectionCriterion getSelectionCriterion()

setSelectionCriterion

public void setSelectionCriterion(HeatExchangerMechanicalDesign.SelectionCriterion selectionCriterion)

getManualSelection

public HeatExchangerType getManualSelection()

setManualSelection

public void setManualSelection(HeatExchangerType manualSelection)

getSizingResults

public List<HeatExchangerSizingResult> getSizingResults()

getSelectedSizingResult

public HeatExchangerSizingResult getSelectedSizingResult()

getSelectedType

public HeatExchangerType getSelectedType()

getSizingSummary

public String getSizingSummary()

getCalculatedUA

public double getCalculatedUA()

Returns:

Calculated UA (W/K) based on the available duty and temperature approach information.

getLogMeanTemperatureDifference

public double getLogMeanTemperatureDifference()

Returns:

Log-mean temperature difference used for the simplified sizing (K).

getApproachTemperature

public double getApproachTemperature()

Returns:

Minimum temperature difference between the hot and cold streams (K).

getUsedOverallHeatTransferCoefficient

public double getUsedOverallHeatTransferCoefficient()

Returns:

Overall heat-transfer coefficient used during the calculation (W/(m^2*K)).

determineDuty

private double determineDuty(ProcessEquipmentInterface equipment)

determineTwoStreamTemperatures

private double[] determineTwoStreamTemperatures(HeatExchanger exchanger)

determineSingleStreamTemperatures

private double[] determineSingleStreamTemperatures(Heater heater,
 UtilityStreamSpecification spec,
 double duty)

calculateLmtd

private double calculateLmtd(double deltaT1,
 double deltaT2)