Evaluation of Three Commercial Microclimate Cooling Systems
Abstract
Three commercially available microclimate cooling systems were evaluated for their ability to reduce heat stress in men exercising in a hot environment while wearing high insulative, low permeability clothing. Five male volunteers performed three 180-min experiments (three repeats of 10 min rest, 50 min walking at 440 watts) in an environment of 38 C dry bulb (Tdb), 12 C dew point (Tdp). The cooling systems were: ILC Dover Model 19 Coolvest (ILC), mean inlet temperature 5.0 C; 2) LSSI Coolhead (LSSI), mean inlet temperature 14.5 C; and 3) Thermacor Cooling Vest (THERM), mean inlet temperature 28.3 C. Endurance time (ET), heart rate (HR), rectal temperature (Tre), mean skin temperature (Tsk), sweating rate (SR), rated perceived exertion (RPE), and thermal sensation (TS) were measured. The subjects self terminated on all LSSI tests because of headaches. Statistical analyses were performed on data collected at 60 min to have values on all subjects. Keywords: Reprints, Heat stress(Physiology), Exercise(Physiology).
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1990
- Accession Number
- ADA219083
Entities
People
- Barry S. Decristofano
- Bruce S. Cadarette
- Karen L. Speckman
- Michael N. Sawka
Organizations
- United States Army Research Institute of Environmental Medicine