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A Study of Promotion of Sublimation Phenomenon of Freeze Drying by Using Thermal Edge Flow

[+] Author Affiliations
Masahiro Kitamura, Michihisa Tsutahara, Satoshi Taguchi, Ryousuke Mitani

Kobe University, Kobe-shi, Hyogo, Japan

Masakazu Enomura, XiaoFeng Zhang

M-Technique Co., Ltd., Izumi-shi, Osaka, Japan

Paper No. IMECE2008-66464, pp. 297-303; 7 pages
doi:10.1115/IMECE2008-66464
From:
  • ASME 2008 International Mechanical Engineering Congress and Exposition
  • Volume 10: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B, and C
  • Boston, Massachusetts, USA, October 31–November 6, 2008
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4871-5 | eISBN: 978-0-7918-3840-2
  • Copyright © 2008 by ASME

abstract

A blower driven by the thermal edge flow was shown to be possible to use for freeze drying. First, the pressure rise by the thermal edge flow was confirmed by using an accumulation unit. The pressure rise of 5Pa was given. Next, the effect of the blower for sublimation from frozen material was confirmed by using frozen sponges containing some water. The necessary time for drying by using the blower was roughly half compared with a drying time by not using the blower and the effect of the blower for sublimation depended on the surrounding vacuum pressure.

Copyright © 2008 by ASME

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