GetTDryBulbFromMoistAirVolumeAndHumRatio: Return dry-bulb temperature given moist air specific volume,...

In psychrolib: Psychrometric Properties of Moist and Dry Air

Description

Return dry-bulb temperature given moist air specific volume, humidity ratio, and pressure.

Usage

GetTDryBulbFromMoistAirVolumeAndHumRatio(MoistAirVolume, HumRatio, Pressure)

Arguments

MoistAirVolume	A numeric vector of specific volume of moist air in ft3 lb-1 of dry air [IP] or in m3 kg-1 of dry air [SI]
HumRatio	A numeric vector of humidity ratio in lb_H2O lb_Air-1 [IP] or kg_H2O kg_Air-1 [SI]
Pressure	A numeric vector of atmospheric pressure in Psi [IP] or Pa [SI]

Value

A numeric vector of tDryBulb : Dry-bulb temperature in degreeF [IP] or degreeC [SI]

Note

• In IP units, R_DA_IP / 144 equals 0.370486 which is the coefficient appearing in eqn 26.

• The factor 144 is for the conversion of Psi = lb in-2 to lb ft-2.

• Based on the 'GetMoistAirVolume' function, rearranged for dry-bulb temperature.

References

ASHRAE Handbook - Fundamentals (2017) ch. 1 eqn 26

Examples

SetUnitSystem("IP")
GetTDryBulbFromMoistAirVolumeAndHumRatio(14.72, seq(0.02, 0.03, 0.001), 14.175)

SetUnitSystem("SI")
GetTDryBulbFromMoistAirVolumeAndHumRatio(0.94, seq(0.02, 0.03, 0.001), 95461)

psychrolib documentation built on May 29, 2021, 9:11 a.m.