Psychrometric Properties of Helium-Water Vapor Mixtures: A Study of the Relationship Between Temperature, Pressure and Humidity, and Wet- and Dry-Bulb Temperatures

摘要

With man's increasing interest in exploring the ocean at greater and greater depths, it was found necessary to replace the nitrogen of the normal atmosphere with helium to provide a breathing gas for those living at ambient ocean pressure. This led to a need for a knowledge of the psychrometric properties of helium at pressures up to several hundred pounds per square inch. This investigation has resulted in: (1) the development of psychrometer, (2) the development of a psychrometric equation for the helium-water vapor system, and (3) the development of a computer program which makes it possible to print out psychrometric charts for any ocean depth. (Author)