Researches on Heat and Mass Transfer by Sublimation of Ice

スポンサーリンク

概要

• 論文の詳細を見る

• The rate of sublimation of ice was investigated by experiment. The pressure range was from 10 to 10^<-3> mmHg. The following three processes were shown to determine the rate in the mass transfer of sublimation of ice. (1) In the pressure range (P>1 mmHg), the rate of mass transfer is governed by the diffusion velocity of vapor in vapor phase, and the maximum rate is reached when the vapor supersaturates and recondensates on the ice surface. (2) Under 10^<-2> mmHg, the velocity of molecular flow, known in the kinetic theory of gases, governs the rate of mass transfer. (3) In the pressure range 1 to 10^<-2> mmHg, the rate is governed by the velocity of phase transition from ice to vapor on the ice surface. In this range, the ice surface becomes very rough. Maximum rate is reached when the surface area of ice increases to the maximum. (4) For finding the correlation between heat and mass transfer from these experimental results, use of the following relation is recommended. α/h=_ρC_p(α/D)(P^^-_g/P) α : coefficient of heat transfer, h : coefficient of mass transfer.

• 一般社団法人日本機械学会の論文

著者

• Katayama Kozo

  Faculty Of Engineering Shibaura Institute Of Technology

• Kimura Takeshi

  Engineer Hitachi Ltd. Central Research Laboratory.

• HAYASHI Yujiro

  Faculty of Engineering, Tokyo Institute of Technology

• Hayashi Yujiro

  Faculty Of Engineering Kanazawa University

• Hayashi Yujiro

  Faculty Of Engineering Tokyo Institute Of Technology

関連論文

• Researches on Heat and Mass Transfer by Sublimation of Ice
• Study of Heat Transfer Phenomena in Quenching of Steel : Effects of Boiling Heat Transfer on Cooling Curves and Water Temperature on Hardness of Steel
• A Study on Frost Formation : The Process of Frost Formation involving the Phenomena of Water Permeation and Freezing
• Researches on Vacuum Freeze-Drying
• REALIZATION OF RECOVERABLE ZONE FROM THE STAND POINT OF FLOW LINES
• Study of Heat Transfer Phenomena in Quenching of Steel (An Analysis of Cooling Curves Accompanied wth Phase Transformation)
• Study on Heat Transfer Phenomena in Quenching of Steel : Effect of latent heat of phase transformation
• Heat Conduction of Semiconductors : 1st Report, Researches of the Fundamental Equations and the Boundary Conditions
• A Transient Method of Simultaneous Measurement of Thermal Properties Using a Plane Heat Source
• Transient Comparison Methods of Simultaneous Measurement of Thermal Properties
• A New Method of Simultaneous Measurement of Thermal Properties by Iterative Calculations
• Numerical Methods in Transient Heat Conduction : (2nd Report, Methods Using a Digital Computer)
• Measurement of Thermal Properties of Semiconductor by Utilization of the Peltier Effect
• Numerical Methods in Transient Heat Conduction : (1st Report, Methods Using the Analog Computer)
• Researches on Heat and Mass Transfer by Sublimation of Ice (2nd Report)
• Researches on Simultaneous Flow of Heat and Fluid through Porous Media : 1st Report, Fundamental Theories
• Organ-Specific Activation of the Gastric Branch of the Efferent Vagus Nerve by Ghrelin in Urethane-Anesthetized Rats

もっと見る 閉じる

スポンサーリンク