# calcTroin: Calculation of Radiative and Operative Temperature In marcelschweiker/comf: Functions for Thermal Comfort Research

## 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

 `1` ```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.

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

 ```1 2 3 4 5 6 7 8``` ```## 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.