THE MOST ADVANCED THERMAL COMFORT TESTING SYSTEM IN THE WORLD.
The thermal comfort lab of the AIC includes a sweating guarded hotplate with integrated chamber, a 34-zone “Newton” sweating thermal manikin with ManikinPC physiological model software, and last but not least, a customized walk-in climate chamber that can go sub-zero or up to 40 celsius with varying humidity levels. What makes this thermal comfort equipment package so advanced?
Newton thermal manikins running the ManikinPC physiological model represent the very best technology for simulating the human thermoregulatory system and for predicting human thermal comfort and thermal sensation values. Pure virtual human models are well suited to the calculation of non-uniform boundary conditions such as solar loading, radiation, conduction, and convection, but these same models struggle when trying to account for clothing insulation values, convection coefficients and contact resistances. These limitations greatly impact the accuracy of comfort predictions. However, combining a virtual human model (ManikinPC) with a Newton thermal manikin eliminates the need to provide boundary conditions to the simulation model. Instead, the actual heat loss measurements from Newton are used in the virtual model calculations and the resulting predictions of thermal comfort are dramatically improved.
IN SIMPLE TERMS, THE NEWTON MANIKIN SYSTEM CAN ACCURATELY AND CONSISTENTLY EVALUATE THE THERMAL COMFORT PERFORMANCE OF APPAREL IN A VARIETY OF ENVIRONMENTAL CONDITIONS.
THERMAL COMFORT TESTS:
NEWTON MANIKIN TESTS
ASTM F 1291 - Thermal insulation of clothing using a heated manikin
ASTM F 2370 - Evaporative resistance of clothing using sweating manikin
ASTM F 2371 - Heat removal rate of personal cooling system using sweating heated manikin
ASTM F 2732 - Temperature ratings for cold weather protective clothing
ASTM F 1720 - Sleeping bag test
EN 13537 - Temperature rating of sleeping bags
THERMAL & EVAPORATIVE RESISTANCE- HOT PLATE TESTS
ASTM D 1868 - Thermal and evaporative resistance using sweating hot plate
Part A - Thermal Resistance (Rct and Rcf)
Part B - Evaporative resistance (Ret and Ref)
Part C - Total Heat loss in a standard environment
ASTM D 1518 - Thermal resistance of batting system using hot plate
ISO 11092 - Thermal and evaporative resistance using sweating guarded hot plate
A. Thermal resistance (Rct)
B. Water vapor resistance (Ret)
ISO 8302 - Thermal conduction test using cold plate