2007, Piran, Slovenia

Environmental Ergonomics XII
Igor B. Mekjavic, Stelios N. Kounalakis & Nigel A.S. Taylor (Eds.), © BIOMED, Ljubljana 2007
The simulation incorporates a dynamic thermal comfort model that predicts perceptual
responses from physiological states. This model was derived using regression analysis and
thermal sensation votes obtained from >2000 male/female subjects.
RESULTS
rectal temp. [°C]
evaporation [W]
Thermal Sensation
514
37.5
37.0
36.5
200
150
100
2
1
0
-1
-2
-3
50
0
Ta=43°C Ta=43°C
Ta=17°C
0 30 60 90 120 150 180 210 240
time [min]
experiment simulation Stolwijk model
Ta=Tw, va=0.1m/s, rh=30%, Icl=0.1clo, act=1met, n=3
Ta=28°C Ta=18°C Ta=28°C
(82.4°F)
- dTsk,m
dt
(64.4°F) (82.4°F)
f ( ) + dTsk,m
f ( )
0 30 60 90 120 150 180 210 240
time [min]
experiment static TS dynamic TS (DTS)
Tw=Ta va=0.1m/s Icl=0.1clo act=1met n=3
dt
The thermoregulatory and comfort models have been
validated against independent experimental data for wide ranging
indoor climate conditions, and showed good agreement with measured
regulatory responses, mean and local skin temperatures, internal
temperatures and thermal sensation responses for the spectrum of conditions
and personal circumstances investigated (Fiala et al. 2001, 2003, Richards
and Fiala 2004).
36
34
32
30
28
mean skin temp. [°C]
200
150
100
metabolism [W]