comf (version 0.1.10)

calcIREQ: IREQ and Dlim

Description

Calculate minimal and neutral values of REQUIRED CLOTHING INSULATION (IREQ) and DURATION LIMITED EXPOSURE (Dlim).

Usage

calcIREQ(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

calcIREQ returns

IREQminimal

Lower bound of insulation required in [clo]

IREQneutral

Upper bound of insulation required in [clo]

ICLminimal

Lower bound of REQUIRED basic clothing insulation (ISO 9920) in [clo]

ICLneutral

Upper bound of REQUIRED basic clothing insulation (ISO 9920) in [clo]

DLEminimal

Lower bound of duration limited exposure in [hours]

DLEneutral

upper bound of duration limited exposure in [hours]

Details

The function gives IREQ Insulation of clothing required to maintain thermal equilibrium of the body at specified levels of physiological stress.

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

Examples

# NOT RUN {
calcIREQ(116,0,-15,-15,8,0.3,0.4,85,2.5)
# }