HUMAN PHYSIOLOGICAL RESPONSES TO SHELTER ENVIRONMENT
Abstract
Three studies were conducted in simulated shelter environments. In Study A two experiments were conducted to determine the effects of subject- packing on changes in body temperature. Four pack conditions were studied using 8, 18, 32 and 48 subjects, respectively. In Experiment I the groups were exposed to 95, 98, 100 and 105F(DB) at 80%RH for 4 hours. Experiment II examined the physiological responses of these groups at 95 and 98F(DB) and 60, 70, 80 and 90%RH for 8 hours. The results of the first experiment supported the hypothesis that under crowded conditions the body temperature will rise faster than under less-crowded conditions. There is also support for this hypothesis in the second experiment; however, the results were not as conclusive. In Study B, experiments were conducted to establish upper limits non-stress shelter environments for men operating a Package Ventilation Kit (PVK). Eight subjects were exposed to DBT's ranging from 80F to 100F at 5F increments when the RH was 80%. Exposure was for a maximum of 8 hours and the subjects worked (pedaled) 15 minutes and rested 15 minutes. The upper limits of the non-stressful environments were: 90F DB at 0.05 hp/man; 85F DB at 0.10 hp/man; and 80F DB at 0.15 hp/man. The purpose of Study C was to determine the acceptability of stored water and to establish ad lib. water consumption at various thermal environments. Six 24 hour tests at ET's of 82.0, 85.0 and 88.0 were conducted with 3 groups of 8 male subjects. The results showed that the mean water intake was independent of the type of water.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1967
- Accession Number
- AD0659403
Entities
People
- Frederick H. Rohles Jr.
- Preston E. Mcnall Jr.
- Ralph G. Nevins
Organizations
- SRI International