vapour

Webel: Psy/MPsy: Psychrometrics for Mathematica: Equation registry with variable/quantity markup

Webel: Psy/MPsy: Psychrometrics for Mathematica: A suffix '$wat$i' indicates water (liquid or vapour) flow TO (into) the humid air mixture. A suffix '$wat$o' indicates water (liquid or vapour) flow FROM (out of) the humid air mixture.

Webel: Psy/MPsy: Psychrometrics for Mathematica: A suffix '$sat' indicates a humid air mixture quantity at saturation (relative humidity = 1 or degree of saturation = 1).

Webel: Psy/MPsy: Psychrometrics for Mathematica: A suffix '$ha' indicates a HUMID air mixture variable, quantity, or function or a PER humid air mass quantity.

Webel: Psy/MPsy: Psychrometrics for Mathematica: A suffix '$a' indicates a DRY air component variable, quantity, or function. A suffix '$da' indicates a HUMID air mixture quantity PER dry air.

Webel: Psy/MPsy: Psychrometrics for Mathematica: A suffix '$wat' indicates a water-related variable, quantity, or function (note that 'w' is reserved for the humidity ratio).

Webel: Psy/MPsy: Psychrometrics for Mathematica: Variable/quantity registry and naming conventions, with symbol markup.

Vapor refers to a gas phase at a temperature where the same substance can also exist in the liquid or solid state, below the critical temperature of the substance.

Source

In physics, a vapor or vapour is a substance in the gas phase at a temperature which means that the vapor can be condensed to a liquid by increasing the pressure on it without reducing the temperature of the vapor.

Source

Webel: Psy/MPsy: Psychrometrics for Mathematica: The term 'steam' (indicated in variable names with a suffix '$s') is reserved for water vapour created through boiling.

Webel: Psy/MPsy: Psychrometrics for Mathematica: A suffix '$g' in a water-related variable name refers to water vapour (a special case of gas) or steam. A suffix '$f' refers to liquid (fluid) water. [Although a gas is a fluid.]

Psychrometrics links (references and online calculators)

Keywords

Keywords

This page collects some useful External links (see section below) for Psychrometrics (humid air physics).

Webel vs SysPhS-1.1: Annex A.5: Humidifier: The restriction of "vapor" to the range 0..1 in EvaporationCalculation2 seems completely arbitrary, it is NOT a ratio!

Webel vs SysPhS-1.1: Annex A.5: Humidifier: In EvaporationCalculation the specificHeat value 1.996 is off by a factor of about 2. It seems to have used the steam (gas) per gram value instead of the liquid water value per gram (or per mL volumetric) value.

Webel vs SysPhS-1.1: Annex A.5: Humidifier: It is assumed that "vapor" is a volume rate corresponding to the rate of consumption OF HEATED LIQUID WATER (from a tank) used to create the vapor.

Annex A.5: Humidifier (with Units)

TRAIL: SysPhS-1.1 Annex A examples in MagicDraw/Cameo SysML vs Modelica (Wolfram SystemsModeler)

Slides in this section

If you want to navigate the entire section including the additional explanatory text click on the title link of the first slide to view the full slide page, then use the next links to move through the slide pages. If you just want to view the slide images only in sequence, click on any slide to view it larger in a viewer, then click again to move through each slide in this tutorial trail section.

Figure 64: Total humidifier system example (MOCKUP)

Figure 65: Internal structure of the total humidifier system - black box vs details

REFERENCE: A.5 Humidifier: Webel: ValueTypes and Units

REFERENCE: A.5 Humidifier: Webel: Block overview

BDD & IBD: HumidifierSystem

BDD & IBD: HumidifiedRoom

BDD & PD: VolumeConversion

BDD & PD: SaturationVaporPressure

BDD & IBD: RelativeHumidity

BDD & PD: RelativeHumidityCalculation

BDD & PD: HumidityBalance

BDD & PD: VaporPressureCalculation

BDD & PD: PercentageConversion

BDD & IBD: Humidifier

BDD & PD: WaterTank

BDD & STM: UsageScenario

BDD & STM: Control

BDD & STM: HeaterControl

BDD & IBD: VaporGenerationPlant

BDD & PD: Radiation

BDD & PD: VaporGenerationPlantCalculation

BDD & IBD: Heating

BDD & PD: TemperatureIncrease

BDD & PD: HeatingCalculation

BDD & IBD: Evaporation

BDD & PD: EvaporationCalculation

BDD & PD: EvaporationCalculation2

Export to Modelica and execution of the SysML/SysPhS block HumidifierSystem_S1

A.5 Humidifier: Scenario block overview BDDs: 96 to 102

A.5 Humidifier: Value property defaults table

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