Function to calculate Required recovery time, RT in hours.
Usage
calcRT(M,W,ta,tr,p,w,v,rh,clo)
Arguments
M
a numeric value presenting metabolic energy production (58 to 400 W/m2) in [W/m2]
W
a numeric value presenting Rate of mechanical work, (normally 0) in [W/m2]
ta
a numeric value presenting ambiant air temperature in [degree C]
tr
a numeric value presenting mean radiant temperature in [degree C]
p
a numeric value presenting air permeability (low < 5, medium 50, high > 100 l/m2s) in [l/m2s]
w
a numeric value presenting walking speed (or calculated work created air movements) in [m/s]
v
a numeric value presenting relative air velocity(0.4 to 18 m/s) in [m/s]
rh
a numeric value presenting relative humidity [%]
clo
a numeric value presenting clothing insulation level in [clo]
Value
returns required recovery time in [hours]
References
ISO 11079, 2007-12-15, ERGONOMICS OF THE THERMAL ENVIRONMENT - DETERMINATION AND INTERPRETATION OF COLD STRESS WHEN USING REQUIRED CLOTHING INSULATION (IREQ) AND LOCAL COOLING EFFECTS