calcTroin: Calculation of Radiative and Operative Temperature

Description Usage Arguments Details Value Author(s) References Examples

View source: R/fctHelp.r

Description

The functions calcTroin calculates radiative and operative temperature based on air temperature, globe temperature, air velocity and metabolic rate. Globe temperature needs to be measured using a standard globe with a diameter of 0.15m and an emissivity of .95 (black coloured).

Usage

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calcTroin(vel, tg, ta, met)

Arguments

vel

numeric value or vector presenting the air velocity in [m/s]

tg

numeric value or vector presenting the globe temperature in [degree C]

ta

numeric value or vector presenting the air temperature in [degree C]

met

numeric value or vector presenting the metabolic rate in [met]

Details

Calculation of the radiative temperature is based on ISO 7726:2001, equation (9). Calculation of operative temperature is based on ISO 7726:2001, Appendix G.3. The adjustment of air velocity to present relative air velocity based on metabolic rate is based on ISO 7730:2005 Appendix C.2.

Value

calcTroin returns a data.frame with radiative and operative temperature.

Author(s)

Marcel Schweiker

References

IsO 7726 Ergonomics of the Thermal Environment, Instruments for measuring Physical Quantities Geneva: International standard Organization, 1998

IsO 7730 Ergonomics of the thermal environment - analytical determination and interpretation of thermal comfort using calculation of the pmv and ppd indices and local thermal comfort criteria 2005

Examples

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## Note. Due to random generated asv values. The values for the coefficients will not be meaningful.
## Create sample data
ta  <- 20:24      # vector with air temperature values
vel <- rep(.1,5)  # vector with air velocities
met <- rep(1.1,5) # vector with metabolic rates
tg <- 25:29       # vector with globe temperature values

calcTroin(vel, tg, ta, met)

marcelschweiker/comf documentation built on May 21, 2017, 6:41 p.m.