By H. S. Yang, H. Nagai, N. Takano, M. Murakami (auth.), Quan-Sheng Shu (eds.)
In contemporary years, the expertise of cryogenic comminution has been commonly utilized within the box of chemical engineering, nutrients making, drugs construction, and especially in recycling of waste material. due to the expanding toxins of waste tires and the dearth of uncooked rubber source, the recycling approach for waste rubber items has develop into vital and commercially possible. This expertise has proven a good number of merits akin to inflicting no environmental toxins, requiring low power intake and generating top of the range items. accordingly, the conventional crusher which was once used to reclaim fabrics, reminiscent of waste tires, nylon, plastic and plenty of polymer fabrics at atmospheric 12 temperature is being changed by way of a cryogenic crusher. • within the cryogenic crusher, the valuables of the milled fabric is mostly very delicate to temperature swap. while a crusher is in operation, it is going to generate loads of warmth that motives the cloth temperature elevated. as soon as the temperature raises over the vitrification temperature, the fabric estate will switch and lose the brittle habit inflicting the strength intake to upward thrust sharply. for this reason, the comminution strategy can't be endured. for this reason, it's believed that the cryogenic crusher is the main serious part within the cryogenic comminution process. The examine at the temperature elevate and effort intake within the cryogenic crusher isn't just to minimize the power intake of the crasher, but in addition to lessen the power intake of the cryogenic system.
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Extra info for Advances in Cryogenic Engineering
Dew Hughes et. al. , Institute of Physics Publishing, Bristol ( 1998) G. Horlitz, " A Study of Pressures, Temperatures and Liquid Levels in the 2 K Refrigeration Circuit of a 1830 m TESLA Subunit under different Conditions and System Configurations. " , TESLA 94 - 17 (1995) B. Rousset, A. Gauthier, B. Jager, R. Van Weelderen, J. G. Weisend II, Hydraulic behaviour of He II in stratified counter-current two-phase flow, in " Proceedings of the ICEC 17 ", D. Dew Hughes et. al. , Institute of Physics Publishing, Bristol (1998) B.
The Froude number is a relative measure of the effect of disturbance to a flow. Small Fr means that the fluid is smooth and gradually varying. Large Fr implies a lot of disturbance and wave action. 1, so that the profiles should be smoothly varying and well behaved. For Fr << 1, Eq. (5) reduces to a simple statement that the interface slope is determined almost entirely by the viscous drag along the channel. 994 Using Eq. (2) to define dh/dz, substituting u1 = my; 1tyfor the fluid velocity, and integrating over the length of the channel and the level change, (y 1-y 2), one obtains an expression for the average friction factor, (6) which can be compared to experiment.
W. G. Weisend II and S. Wolf, Numerical Study of Two-Phase He II Stratified Channel Flow, paper CCA-4, 1999 Cryogenic Engineering Conference. J. Panek, Heat Transfer in Horizontal Two Phase He II and Vapor, PhD Thesis, Florida State University (1998). J. Panek and S. W. Van Sciver, Heat Transfer in a Horizontal Channel containing Two-Phase He II, Cryogenics (submitted). D. K. S. R. W. VanSciver, A Capacitive Liquid Helium Level Sensor Instrument, Cryogenics (accepted) 1000 NUMERICAL STUDY OF TWO-PHASE HELIUM II STRATIFIED CHANNEL FLOW Y.
Advances in Cryogenic Engineering by H. S. Yang, H. Nagai, N. Takano, M. Murakami (auth.), Quan-Sheng Shu (eds.)