AN I-X DIAGRAM FOR A WATER VAPOR-HYDROGEN SYSTEM
Abstract
Water vapor-hydrogen systems are encountered in many chemical-engineering processes related to the production and use of H2. A knowledge of the thermodynamic properties of these systems is important in solving engineering problems. The properties of wet gas mixtures may be conveniently represented in an I-x diagram (I is the heat content of the mixture per kg of the absolutely dry part of it, x is the quantity of moisture by weight in the same quantity of mixture). Using this diagram, one can set up the heat and material balances of the processes of drying and wetting H2, and from the readings of the psychrometer determine the ratio between the H2 and the water in the mixture. In setting up the water vaporhydrogen diagram the oblique-coordinate system proposed by Ramsay and later by Mollier for humid air was used. The diagram is plotted for a constant pressure of 760 mm Hg on the basis of the equations of state of ideal gases in the temperature range from 0 to 100 degrees and in the range of moisture contents from 0 to 1.8 kg per kg of dry H2. Plotted on the diagram are the lines of constant temperature, constant heat content, constant moisture content, constant relative humidity, and the lines of constant temperature of a wet thermometer (psychrometric lines). (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 13, 1962
- Accession Number
- AD0284085
Entities
People
- Aleksander Blum
- Anatol Selecki
Organizations
- National Air and Space Intelligence Center