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water vapour

Uni Texas Psychrometrics handouts (PDF scans). Chap.7 & 8 from 'Thermal Environmental Engineering (3rd Edition)' by Ramsey, Threlkeld, Kuehn

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.

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: Calculations of the mass flow rate of the dry air component (assumed constant under steady state) from the ENTRY volumetric flow rate of the humid air mixture MUST use the INITIAL state variables!

Psychrometrics: The volumetric flow rate of a humid air mixture MAY change between a State1 and State2 (but the mass flow rate of dry air does not under steady state)! This is sometimes "glossed over" in some online calculators and less formal guides.

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