#include <opening_losses.h>

Public Types
enum class	OpeningShape { CIRCULAR , RECTANGULAR }

Public Member Functions
double	calculateViewFactor (double thickness, double diameter)

double	calculateViewFactor (double thickness, double length, double height)

	OpeningLosses (double emissivity, double length, double width, double thickness, double ratio, double ambientTemperature, double insideTemperature, double percentTimeOpen, double viewFactor)

	OpeningLosses (double emissivity, double diameter, double thickness, double ratio, double ambientTemperature, double insideTemperature, double percentTimeOpen, double viewFactor)

double	getEmissivity () const

void	setEmissivity (double emissivity)

double	getDiameter () const

void	setDiameter (double diameter)

double	getWidth () const

void	setWidth (double width)

double	getThickness () const

void	setThickness (double thickness)

double	getRatio () const

void	setRatio (double ratio)

double	getAmbientTemperature () const

void	setAmbientTemperature (double ambientTemperature)

double	getInsideTemperature () const

void	setInsideTemperature (double insideTemperature)

double	getPercentTimeOpen () const

void	setPercentTimeOpen (double percentTimeOpen)

double	getViewFactor () const

void	setViewFactor (double viewFactor)

OpeningShape	getOpeningShape () const

void	setOpeningShape (OpeningShape const openingShape, const double length, const double width)

void	setOpeningShape (OpeningShape const openingShape, const double diameter)

double	getHeatLoss ()

Private Attributes
double	emissivity = 0.95

double	diameter = 0

double	length = 0

double	width = 0

double	thickness

double	ratio

double	ambientTemperature

double	insideTemperature

double	percentTimeOpen

double	viewFactor

OpeningShape	openingShape

double	heatLoss = 0

const std::array< const std::function< double(const double thicknessRatio)>, 8 >	viewFactorEquations

Detailed Description

Opening Losses class Contains all the properties of an opening loss. Used to calculateThermalResistance the heat loss caused by heat transfer from the openings on equipment to the surrounding. Only considers thermal radiation losses due to exposure of furnace to the surroundings.

Definition at line 24 of file opening_losses.h.

Member Enumeration Documentation

◆ OpeningShape

enum class OpeningLosses::OpeningShape

strong

OpeningShape - Enum class consisting of CIRCULAR and RECTANGULAR entries. Set automatically by the constructor depending on which constructor is chosen, the one with length + width or the one with diameter. The shape of the opening can later be changed via the setOpeningShape methods.

Definition at line 31 of file opening_losses.h.

Constructor & Destructor Documentation

◆ OpeningLosses() [1/2]

OpeningLosses::OpeningLosses	(	double	emissivity,
		double	length,
		double	width,
		double	thickness,
		double	ratio,
		double	ambientTemperature,
		double	insideTemperature,
		double	percentTimeOpen,
		double	viewFactor
	)

inline

Constructor for a rectangular opening

Parameters

emissivity	double, emissivity - unitless
length	double, length of openings in inches
width	double, height of openings in inches
thickness	double, furnace wall thickness in inches
ratio	double, ratio
ambientTemperature	double, ambient temperature in °F
insideTemperature	double, inside temperature in °F
percentTimeOpen	double, amount of time open as a %
viewFactor	double, view factor - unitless

Definition at line 62 of file opening_losses.h.

◆ OpeningLosses() [2/2]

OpeningLosses::OpeningLosses	(	double	emissivity,
		double	diameter,
		double	thickness,
		double	ratio,
		double	ambientTemperature,
		double	insideTemperature,
		double	percentTimeOpen,
		double	viewFactor
	)

inline

Constructor for a circular opening

Parameters

emissivity	double, emissivity - unitless
diameter	double, diameter of opening in inches
thickness	double, furnace wall thickness in inches
ratio	double, ratio
ambientTemperature	double, ambient temperature in °F
insideTemperature	double, inside temperature in °F
percentTimeOpen	double, amount of time open as %
viewFactor	double, view factor - unitless

Definition at line 79 of file opening_losses.h.

Member Function Documentation

◆ calculateViewFactor() [1/2]

double OpeningLosses::calculateViewFactor	(	double	thickness,
		double	diameter
	)

Method to calculateThermalResistance viewFactor for circular openings only

Parameters

double,thickness	- furnace wall thickness in inches
double,diameter	of opening in inches

Returns: double, viewFactor - unitless

◆ calculateViewFactor() [2/2]

double OpeningLosses::calculateViewFactor	(	double	thickness,
		double	length,
		double	height
	)

Method to calculateThermalResistance viewFactor for rectangular openings only

Parameters

double,thickness	- furnace wall thickness in inches
double,length	- length of opening in inches
double,height	- height of opening in inches

Returns: double, viewFactor - unitless

◆ getAmbientTemperature()

double OpeningLosses::getAmbientTemperature ( ) const

inline

Gets the ambient temperature

Returns: double, ambient temperature in °F

Definition at line 152 of file opening_losses.h.

◆ getDiameter()

double OpeningLosses::getDiameter ( ) const

inline

Gets the diameter of opening

Returns: double, diameter of opening in inches

Definition at line 103 of file opening_losses.h.

◆ getEmissivity()

double OpeningLosses::getEmissivity ( ) const

inline

Gets the emissivity

Returns: double, emissivity - unitless

Definition at line 91 of file opening_losses.h.

◆ getHeatLoss()

double OpeningLosses::getHeatLoss ( )

Gets the heat loss

Returns: double, heat loss in btu/cycle

◆ getInsideTemperature()

double OpeningLosses::getInsideTemperature ( ) const

inline

Gets the inside temperature

Returns: double, inside temperature in °F

Definition at line 164 of file opening_losses.h.

◆ getOpeningShape()

OpeningShape OpeningLosses::getOpeningShape ( ) const

inline

Gets the opening shape

Returns: OpeningShape, classification of shape of opening

Definition at line 200 of file opening_losses.h.

◆ getPercentTimeOpen()

double OpeningLosses::getPercentTimeOpen ( ) const

inline

Gets the percentage of time open

Returns: double, amount of time open as %

Definition at line 176 of file opening_losses.h.

◆ getRatio()

double OpeningLosses::getRatio ( ) const

inline

Gets the ratio

Returns: double, ratio - unitless

Definition at line 139 of file opening_losses.h.

◆ getThickness()

double OpeningLosses::getThickness ( ) const

inline

Gets the furnace wall thickness

Returns: double, furnace wall thickness in inches

Definition at line 127 of file opening_losses.h.

◆ getViewFactor()

double OpeningLosses::getViewFactor ( ) const

inline

Gets the view factor

Returns: double, view factor - unitless

Definition at line 188 of file opening_losses.h.

◆ getWidth()

double OpeningLosses::getWidth ( ) const

inline

Gets the width of the opening

Returns: double, width of opening in inches

Definition at line 115 of file opening_losses.h.

◆ setAmbientTemperature()

void OpeningLosses::setAmbientTemperature ( double ambientTemperature )

inline

Sets the ambient temperature

Parameters

ambientTemperature double, ambient temperature in °F

Definition at line 158 of file opening_losses.h.

◆ setDiameter()

void OpeningLosses::setDiameter ( double diameter )

inline

Sets the diameter of the circular opening

Parameters

diameter double, diameter of opening in inches

Definition at line 109 of file opening_losses.h.

◆ setEmissivity()

void OpeningLosses::setEmissivity ( double emissivity )

inline

Sets the emissivity

Parameters

emissivity double, emissivity - unitless

Definition at line 97 of file opening_losses.h.

◆ setInsideTemperature()

void OpeningLosses::setInsideTemperature ( double insideTemperature )

inline

Sets the inside temperature

Parameters

insideTemperature double, inside temperature in °F

Definition at line 170 of file opening_losses.h.

◆ setOpeningShape() [1/2]

void OpeningLosses::setOpeningShape	(	OpeningShape const	openingShape,
		const double	diameter
	)

inline

Sets the opening shape - you better be calling this to set shape to CIRCULAR

Parameters

openingShape	OpeningShape, classification of shape of opening
double,diameter	- diameter of circular opening in inches

Definition at line 223 of file opening_losses.h.

◆ setOpeningShape() [2/2]

void OpeningLosses::setOpeningShape	(	OpeningShape const	openingShape,
		const double	length,
		const double	width
	)

inline

Sets the opening shape - you better be calling this to set shape to RECTANGULAR

Parameters

openingShape	OpeningShape, classification of shape of opening
double,length	- length of opening in inches
double,width	- width / height of rectangular opening in inches

Definition at line 208 of file opening_losses.h.

◆ setPercentTimeOpen()

void OpeningLosses::setPercentTimeOpen ( double percentTimeOpen )

inline

Sets the percentage of time open

Parameters

percentTimeOpen double, amount of time open as a %

Definition at line 182 of file opening_losses.h.

◆ setRatio()

void OpeningLosses::setRatio ( double ratio )

inline

Sets the ratio

Parameters

ratio double, ratio - unitless

Definition at line 146 of file opening_losses.h.

◆ setThickness()

void OpeningLosses::setThickness ( double thickness )

inline

Sets the furnace wall thickness

Parameters

thickness double, furnace wall thickness in inches

Definition at line 133 of file opening_losses.h.

◆ setViewFactor()

void OpeningLosses::setViewFactor ( double viewFactor )

inline

Sets the view factor manually, can also be calculated via one of the calculateViewFactor methods

Parameters

viewFactor double, view factor - unitless

Definition at line 194 of file opening_losses.h.

◆ setWidth()

void OpeningLosses::setWidth ( double width )

inline

Sets the width of opening

Parameters

width double, width of opening in inches

Definition at line 121 of file opening_losses.h.

Member Data Documentation

◆ ambientTemperature

double OpeningLosses::ambientTemperature

private

Definition at line 245 of file opening_losses.h.

◆ diameter

double OpeningLosses::diameter = 0

private

Definition at line 241 of file opening_losses.h.

◆ emissivity

double OpeningLosses::emissivity = 0.95

private

Definition at line 240 of file opening_losses.h.

◆ heatLoss

double OpeningLosses::heatLoss = 0

private

Definition at line 251 of file opening_losses.h.

◆ insideTemperature

double OpeningLosses::insideTemperature

private

Definition at line 246 of file opening_losses.h.

◆ length

double OpeningLosses::length = 0

private

Definition at line 242 of file opening_losses.h.

◆ openingShape

OpeningShape OpeningLosses::openingShape

private

Definition at line 249 of file opening_losses.h.

◆ percentTimeOpen

double OpeningLosses::percentTimeOpen

private

Definition at line 247 of file opening_losses.h.

◆ ratio

double OpeningLosses::ratio

private

Definition at line 244 of file opening_losses.h.

◆ thickness

double OpeningLosses::thickness

private

Definition at line 243 of file opening_losses.h.

◆ viewFactor

double OpeningLosses::viewFactor

private

Definition at line 248 of file opening_losses.h.

◆ viewFactorEquations

const std::array<const std::function<double(const double thicknessRatio)>, 8> OpeningLosses::viewFactorEquations

private

Definition at line 253 of file opening_losses.h.

◆ width

double OpeningLosses::width = 0

private

Definition at line 242 of file opening_losses.h.

The documentation for this class was generated from the following file:

include/processHeat/losses/opening_losses.h

Public Types

Public Member Functions

Private Attributes

Detailed Description

Member Enumeration Documentation

◆ OpeningShape

Constructor & Destructor Documentation

◆ OpeningLosses() [1/2]

◆ OpeningLosses() [2/2]

Member Function Documentation

◆ calculateViewFactor() [1/2]

◆ calculateViewFactor() [2/2]

◆ getAmbientTemperature()

◆ getDiameter()

◆ getEmissivity()

◆ getHeatLoss()

◆ getInsideTemperature()

◆ getOpeningShape()

◆ getPercentTimeOpen()

◆ getRatio()

◆ getThickness()

◆ getViewFactor()

◆ getWidth()

◆ setAmbientTemperature()

◆ setDiameter()

◆ setEmissivity()

◆ setInsideTemperature()

◆ setOpeningShape() [1/2]

◆ setOpeningShape() [2/2]

◆ setPercentTimeOpen()

◆ setRatio()

◆ setThickness()

◆ setViewFactor()

◆ setWidth()

Member Data Documentation

◆ ambientTemperature

◆ diameter

◆ emissivity

◆ heatLoss

◆ insideTemperature

◆ length

◆ openingShape

◆ percentTimeOpen

◆ ratio

◆ thickness

◆ viewFactor

◆ viewFactorEquations

◆ width