Hyperbaric Respiratory Heat Loss Study
Abstract
A multidepth saturation dive was performed as the vehicle for a study of respiratory heat loss during deep-depth, cold, helium-oxygen breathing. Respiratory heat loss was computed for each of the 137 combinations of depth and inhaled gas temperature for which ventilation and exhalation temperature were measured. Skin site temperatures and other respiratory parameters were also monitored, and the diver-subjects were under visual surveillance. Conclusions having significance to operational diving are as follows: Dives to 850 feet for exposure durations in excess of 90 minutes in water of 45 deg F or colder are hazardous; Dives to 650 feet or deeper for exposure durations in excess of 90 minutes in water of 35 de F are liable to be characterized by significant task performance degradation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 31, 1971
- Accession Number
- AD0732039
Entities
People
- Edward Iii L. Rich
- John W. Colston
- Maxwell W. Goodman
- N. E. Smith
Organizations
- Westinghouse Electric Corporation