DryerOperatingCost Class Reference

Classes
struct	Input
struct	Output

Public Types
enum	DryerType {   Heatless , HeatedExternally , BlowerPurgeWithSweep , BlowerPurgeWithoutSweep ,   HeatOfCompressionHC , HeatOfCompressionSP , Refrigerated }

Public Member Functions
	DryerOperatingCost (const Input &input)
	DryerOperatingCost (const double flowRate, const double pressure, const double temperature, const double operatingHoursPerDay, const double operatingDaysPerWeek, const double operatingWeeksPerYear, const double costOfElectricity, const double costOfCompressedAir, const double costOfCoolingWater)
	DryerOperatingCost (const double flowRate, const double pressure, const double temperature, const double operatingHoursPerDay, const double operatingDaysPerWeek, const double operatingWeeksPerYear, const double costOfElectricity, const double costOfCompressedAir, const double costOfCoolingWater, const double heaterPower, const double heatingHoursPerDay, const double purgeRate, const double designDDCPercentage)
Output	calculate (const DryerType dryerType) const

Private Attributes
const double	flowRate
const double	pressure
const double	temperature
const double	operatingHoursPerDay
const double	operatingDaysPerWeek
const double	operatingWeeksPerYear
const double	costOfElectricity
const double	costOfCompressedAir
const double	costOfCoolingWater
const double	heaterPower
const double	heatingHoursPerDay
const double	purgeRate
double	designDDCPercent = 0.1633
const std::map< int, double >	lookupTemp

Detailed Description

Definition at line 28 of file dryer_operating_cost.h.

Member Enumeration Documentation

DryerType

enum DryerOperatingCost::DryerType

Definition at line 30 of file dryer_operating_cost.h.

Constructor & Destructor Documentation

DryerOperatingCost() [1/3]

DryerOperatingCost::DryerOperatingCost ( const Input &  input )

inlineexplicit

Constructor for DryerOperatingCost - Use this constructor when all input parameters are available.

Parameters

input

Input struct, input parameters for calculation of dryer operating cost including optional parameters that can be calculated within the class if not provided.

Definition at line 99 of file dryer_operating_cost.h.

DryerOperatingCost() [2/3]

DryerOperatingCost::DryerOperatingCost ( const double  flowRate, const double  pressure, const double  temperature, const double  operatingHoursPerDay, const double  operatingDaysPerWeek, const double  operatingWeeksPerYear, const double  costOfElectricity, const double  costOfCompressedAir, const double  costOfCoolingWater  )

inline

Constructor for DryerOperatingCost - Use this constructor when heater power rating, heating hours per day, purge rate and design DDC percentage is not known or needs to be computed.

Parameters

flowRate	double, Flow Rate in SCFM (1 - 50,000 SCFM)
pressure	double, Pressure in psig (25 - 150 psig)
temperature	double, Temperature F (50 - 120 F)
operatingHoursPerDay	double, Hours for which the dryer operates per day - hours (1 - 24 hours)
operatingDaysPerWeek	double, Days for which the dryer operates per week - days ( 1 - 7 days)
operatingWeeksPerYear	double, Weeks for which the dryer operates per year - weeks (1 - 52 weeks)
costOfElectricity	double, Cost of electricity per kWh - $ ($0.01 - $0.20 per kWh)
costOfCompressedAir	double, Cost of compressed air per 1000 SCF - $ ($0.20 - $0.50 per 1000 SCF)
costOfCoolingWater	double, Cost of cooling water per 1000 gallons - $ ($0.25 - $10.00 per 1000 gallons)

Definition at line 116 of file dryer_operating_cost.h.

DryerOperatingCost() [3/3]

DryerOperatingCost::DryerOperatingCost ( const double  flowRate, const double  pressure, const double  temperature, const double  operatingHoursPerDay, const double  operatingDaysPerWeek, const double  operatingWeeksPerYear, const double  costOfElectricity, const double  costOfCompressedAir, const double  costOfCoolingWater, const double  heaterPower, const double  heatingHoursPerDay, const double  purgeRate, const double  designDDCPercentage  )

inline

Constructor for DryerOperatingCost - Use this constructor when heater power rating, heating hours per day, purge rate and design DDC percentage is known.

Parameters

flowRate	double, Flow Rate in SCFM (1 - 50,000 SCFM)
pressure	double, Pressure in psig (25 - 150 psig)
temperature	double, Temperature F (50 - 120 F)
operatingHoursPerDay	double, Hours for which the dryer operates per day - hours (1 - 24 hours)
operatingDaysPerWeek	double, Days for which the dryer operates per week - days ( 1 - 7 days)
operatingWeeksPerYear	double, Weeks for which the dryer operates per year - weeks (1 - 52 weeks)
costOfElectricity	double, Cost of electricity per kWh - $ ($0.01 - $0.20 per kWh)
costOfCompressedAir	double, Cost of compressed air per 1000 SCF - $ ($0.20 - $0.50 per 1000 SCF)
costOfCoolingWater	double, Cost of cooling water per 1000 gallons - $ ($0.25 - $10.00 per 1000 gallons)
heaterPower	double, Heater power rating in kW (0 - 1000 kW). If heater power is not known or needs to be computed set it to 0.
heatingHoursPerDay	double, Hours for which the dryer heater operates per day - hours (0 - 24 hours) If heating hours per day is not known or needs to be calculated default set it to 0. Calculator default for heating hours per day is 18 hours for Heated Externally, Blower Purge With Sweep and Blower Purge Without Sweep dryers, and 3 hours for Heat of Compression - HC dryer.
purgeRate	double, Purge rate for the dryer - percentage (0 - 100%) If purge rate is not known or needs to be calculated default set it to 0. Calculator default for purge rate is 15% for Heatless dryer, 7% for Heated Externally, Blower Purge With Sweep and Blower Purge Without Sweep dryers, and 2% for Heat of Compression - HC dryer.
designDDCPercentage	double, Design DDC percentage for the dryer - percentage (0 - 100%) If design DDC percentage is not known or needs to be calculated default set it to 0. Calculator default for design DDC percentage is 16.33% for desiccant dryers.

Definition at line 153 of file dryer_operating_cost.h.

Member Function Documentation

calculate()

Output DryerOperatingCost::calculate ( const DryerType  dryerType ) const

inline

Parameters

dryerType

DryerType enum, type of dryer for which operating cost is to be calculated

Returns

Output

Definition at line 213 of file dryer_operating_cost.h.

Member Data Documentation

costOfCompressedAir

const double DryerOperatingCost::costOfCompressedAir

private

Definition at line 316 of file dryer_operating_cost.h.

costOfCoolingWater

const double DryerOperatingCost::costOfCoolingWater

private

Definition at line 316 of file dryer_operating_cost.h.

costOfElectricity

const double DryerOperatingCost::costOfElectricity

private

Definition at line 316 of file dryer_operating_cost.h.

designDDCPercent

double DryerOperatingCost::designDDCPercent = 0.1633

private

Definition at line 318 of file dryer_operating_cost.h.

flowRate

const double DryerOperatingCost::flowRate

private

Definition at line 314 of file dryer_operating_cost.h.

heaterPower

const double DryerOperatingCost::heaterPower

private

Definition at line 317 of file dryer_operating_cost.h.

heatingHoursPerDay

const double DryerOperatingCost::heatingHoursPerDay

private

Definition at line 317 of file dryer_operating_cost.h.

lookupTemp

const std::map<int, double> DryerOperatingCost::lookupTemp

private

Initial value:

= {
        {36, 0.10396}, {37, 0.10815}, {38, 0.11249}, {39, 0.11699}, {40, 0.12164},
        {41, 0.12646}, {42, 0.13145}, {43, 0.1366}, {44, 0.14194}, {45, 0.14746},
        {46, 0.15317}, {47, 0.15907}, {48, 0.16517}, {49, 0.17148}, {50, 0.17799},
        {51, 0.18473}, {52, 0.19169}, {53, 0.19888}, {54, 0.2063}, {55, 0.21397},
        {56, 0.22188}, {57, 0.23006}, {58, 0.23849}, {59, 0.2472}, {60, 0.25618},
        {61, 0.26545}, {62, 0.27502}, {63, 0.28488}, {64, 0.29505}, {65, 0.30554},
        {66, 0.31636}, {67, 0.3275}, {68, 0.339}, {69, 0.35084}, {70, 0.36304},
        {71, 0.37561}, {72, 0.38856}, {73, 0.4019}, {74, 0.41564}, {75, 0.42979},
        {76, 0.44435}, {77, 0.45935}, {78, 0.47478}, {79, 0.49066}, {80, 0.50701},
        {81, 0.52382}, {82, 0.54112}, {83, 0.55892}, {84, 0.57722}, {85, 0.59604},
        {86, 0.6154}, {87, 0.6353}, {88, 0.65575}, {89, 0.67678}, {90, 0.69838},
        {91, 0.72059}, {92, 0.7434}, {93, 0.76684}, {94, 0.79091}, {95, 0.81564},
        {96, 0.84103}, {97, 0.86711}, {98, 0.89388}, {99, 0.92137}, {100, 0.94959},
        {101, 0.97854}, {102, 1.0083}, {103, 1.0388}, {104, 1.07}, {105, 1.1021},
        {106, 1.1351}, {107, 1.1688}, {108, 1.2035}, {109, 1.239}, {110, 1.2754},
        {111, 1.3128}, {112, 1.351}, {113, 1.3902}, {114, 1.4305}, {115, 1.4717},
        {116, 1.5139}, {117, 1.5571}, {118, 1.6014}, {119, 1.6468}, {120, 1.6933},
        {121, 1.7409}, {122, 1.7897}, {123, 1.8396}, {124, 1.8907}, {125, 1.943},
        {126, 1.9966}, {127, 2.0514}, {128, 2.1075}, {129, 2.1649}, {130, 2.2237}
    }

Definition at line 320 of file dryer_operating_cost.h.

operatingDaysPerWeek

const double DryerOperatingCost::operatingDaysPerWeek

private

Definition at line 315 of file dryer_operating_cost.h.

operatingHoursPerDay

const double DryerOperatingCost::operatingHoursPerDay

private

Definition at line 315 of file dryer_operating_cost.h.

operatingWeeksPerYear

const double DryerOperatingCost::operatingWeeksPerYear

private

Definition at line 315 of file dryer_operating_cost.h.

pressure

const double DryerOperatingCost::pressure

private

Definition at line 314 of file dryer_operating_cost.h.

purgeRate

const double DryerOperatingCost::purgeRate

private

Definition at line 317 of file dryer_operating_cost.h.

temperature

const double DryerOperatingCost::temperature

private

Definition at line 314 of file dryer_operating_cost.h.

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

• include/compressedAir/dryer_operating_cost.h