Icon class icon_class far fa-sticky-note icon_class_computed far fa-sticky-note Note kind CONVENTION Policy level STRICT Keywords Psychrometrics energy British Thermal Unit Btu Webel::Psy Webel::MPsy Relates to Example 01: Values from 'tdb' and relative humidity 'r' Example 02: Values from dry bulb temperature 'tdb' and wet bulb temperature 'twb' (sling psychrometer) Example 03a: Values from dry bulb temperature 'tdb' and wet bulb temperature 'twb' Example 03b: Values from dry bulb temperature 'tdb' and wet bulb temperature 'twb' Example 04: Values from dry bulb temperature 'tdb' and wet bulb temperature 'twb' Example 05: Sensible heating: 'qSen' (+ve): energy transfer TO humid air Example 06: Sensible heating: 'qSen' per mass (+ve): energy transfer TO humid air Example 07: Sensible cooling: 'qDotSen' (-ve): energy transfer rate FROM humid air Example 08a: Humidification: Drying lumber with air: required volumetric air flow rate Example 08b: Humidification: As a 2-step (3-state) process Example 09: Moisture added to air: Amount (mass) Example 10: Condition and dehumidify air by chilling and condensing some moisture: Process table Example 11: Total (qDotTot), sensible (qDotSen), and latent cooling (qDotLat) required for cooling air SysML4Mathematica: Example 05: Sensible heating: 'qSen' (+ve): energy transfer TO humid air SysML4Mathematica: Example 06: Sensible heating: 'qSen' per mass (+ve): energy transfer TO humid air SysML4Mathematica: Example 07: Sensible cooling: 'qDotSen' (-ve): energy transfer rate FROM humid air SysML4Mathematica: Example 08a: Humidification: Drying lumber with air: required volumetric air flow rate SysML4Mathematica: Example 09: Moisture added to air: Amount (mass) SysML4Mathematica: Example 10: Condition and dehumidify air by chilling and condensing some moisture: Process table SysML4Mathematica: Example 11 [A] Total (qDotTot), sensible (qDotSen), and latent cooling (qDotLat) required for cooling air: Using CoolProp wrappers and SysML Parametric Diagrams SysML4Mathematica: Example 11 [B]: Total (qDotTot), sensible (qDotSen), and latent cooling (qDotLat) required for cooling air: Using Webel MPsy objects and SysML Activity Diagrams Psychrometrics exercise references (and about some naming conventions) Psy` humid air physics package: Example: Sensible Heating results Related notes [CONVENTION]{STRICT} Webel: Psy/MPsy: Psychrometrics for Mathematica: CONVENTION: 'Q' as a quantity symbol in equations indicates the energy GAINED BY the system as heat energy transfer; 'W' indicates the work DONE BY the system on its external surroundings. [CONVENTION]{STRICT} Webel: Psy/MPsy: Psychrometrics for Mathematica: Humidity ratio (absolute humidity) is indicated by a lower case 'w' and measured in mass (water) / mass (dry air) units, so the SI and IP representations are equal Real (without an explicit unit system) Related notes (backlinks) [CONVENTION]{STRICT} Webel: Psy/MPsy: Psychrometrics for Mathematica: Transferred heat (energy "Q") has field names with lower case 'qTot', 'qSen', 'qLat'. Heat rates (energy per time) have field names 'qDotTot', 'qDotSen', 'qDotLat' (to avoid clashes with Mathematica core) Related snippets (extracts) Visit also Visit also (backlinks) External links British thermal unit (IT) conversions https://en.wikipedia.org/wiki/British_thermal_unit Flags
