Helium Research Center internal report
Subtitle: design of interchanger for determining the ratio of Cp mixed to Cp unmixed in the helium-nitrogen system
By: by Robert E. Barieau
Contributors: United States. Bureau of Mines; Helium Research Center (United States. Bureau of Mines). Branch of Fundamental Research
Series: Helium Research Center Internal Report / U.S. Department of the Interior, Bureau of Mines -- no. 58; Helium Research Center Internal Report (United States. Bureau of Mines) -- no. 58.
Publisher: U.S. Department of the Interior, Bureau of Mines, Branch of Fundamental Research
Published: 1964
Place of publication: Amarillo, Tex
Language: eng
Number of pages: 77
Subjects: Temperature measurements; Copper Tubes; Helium; Nitrogen; Mathematical models
Other titles: Bureau of Mines, Helium Activity, Helium Research Center Internal Report; Design of interchanger for determining the ratio of Cp mixed to Cp unmixed in the helium-nitrogen system
Notes: "October 1964."

"Fundamental Research Branch, Project 4329."

Includes bibliographical references.
Table of contents: title: Description of interchanger; title: Summary of calculated operating performance of interchanger; title: Safe working pressure of 3/16 inch O.D. copper tubing with 0.042 inch wall; title: Weight of copper tubing in interchanger; title: Approximate outside diameter of packed interchanger tubing; title: Estimation of weight of low melting solder in interchanger; title: Estimation of heat leak and weight of insulation; title: Details of calculation of temperatures in interchanger : Sample calculation for scfm of helium, 20 scfm of nitrogen, and 40 scfm of helium-nitrogen mixture ; Heat transfer coefficients for gases in circular tubes; title: Calculation of temperature drop through copper wall tube; title: Details of calculation of pressure drops through the interchanger; title: Estimation of additional interchanger tubing needed to have the copper tube wall indicate the final equilibrium temperature of the helium-nitrogen mixture stream to within 0.01℗ʻ F; title: Estimation of additional interchanger tubing needed to have the copper tube wall indicate the final equilibrium temperature of the pure helium and nitrogen streams to within 0.01℗ʻ F.