Accession Number : AD0273200

Title :   EXPERIMENTAL STUDIES ON VACUUM CRYOSORPTION PUMPING

Corporate Author : ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AIR FORCE STATION TENN

Personal Author(s) : LENNERT,ANDREW E.

Report Date : MAR 1962

Pagination or Media Count : 1

Abstract : A series of experi ents was performe in a vacuum to determine the rates of cryosorption of ac ivated charco l (Matheson 6-14 mesh and 1/8 in. C OLUMBIA PELLETS) and 13-X L IND MOLECULAR SIEVE FOR BONE DRY NITROGEN AND SIMULATED ROCKET ENGINE EXHAUST GASES. The purpo wa to obtain sufficient information to design a cryosorption pumping system for the removal of rocket engine exhaust gases in a high altitude, simulation chamber at the Arnold gin ring Developm nt Center. The results indicated that it is possible to cryosorb 0 015 STP cc/sec-sq. cm of bone dry nitrogen with Matheson 6-14 mesh activated charcoal and maintain an effective chamber pressure of 0.05 mm-Hg for 250 sec of flow. The 13-X Linde molecular sieve material e hibit d greater cryo orption r tes; however, the minimum reactivation process has not been established. An attempt to correlate theory and experiment was successful for the case where the adsorbent surface temperature is greater than the critical gas temperature. (Author)

Descriptors :   *ADSORPTION, *EXHAUST GASES, CRYOGENICS, NITROGEN, ROCKETS, VACUUM APPARATUS

Distribution Statement : APPROVED FOR PUBLIC RELEASE