Accession Number:

AD0274650

Title:

CRYOPUMPING BY THREE ARRAYS AT PRESSURES OF 10-3 TO 10-8 MM. HG

Descriptive Note:

Corporate Author:

CRYOVAC INC COLUMBUS OHIO

Report Date:

1961-12-01

Pagination or Media Count:

1.0

Abstract:

Three arrangements of surfaces cooled to 21.5 K were investigated theoretically and tested to determine condensing rates and resultant vacuum pumping performance of the arrays at pressures of 11000 to 10 to the -8 mm Hg. These are identified as unshielded, flat shielded, and angled fin arrays. Theoretical performance and experimental performances were correlated. Measurement of vacua below 110,000 mm Hg. were shown to be of uncertain accuracy. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE