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An Experimental Study on the Characteristics of Temperature Distribution in Internal Space of a Tube for the Formal Change of Counterflow Type Vortex Tube  

황승식 (국민대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.10, no.4, 2002 , pp. 69-76 More about this Journal
Abstract
The aim of this study is to provide fundamental informations that make it possible to use a cool stream and a hot stream simultaneously. We changed the pressure of compressed air that flows into a tube, the inner diameter of orifice that a cold stream exits, and the mass flow rate ratio. And in each case, we measured the temperature of a cold stream and a hot stream in each exit of a tube. Also we measured the axial and the radial temperature distribution in internal spare of a tube. From the study, fellowing conclusive remarks 7an be made. First, As the number of nozzles increase, separation point move into the hot exit. Second, When we use guide vane type nozzle, the axial temperature distribution constant over the 0.75 of air mass flow rate radio. Third, When we use Spiral type nozzle, axial and radial temperature distribution in the inner space is higher than another nozzle. Fourth, Axial and radial temperature distribution in the inner space vortex-tube is determined by separation point. And separation point is moved by changing of air mass flow rate ratio. At last, A heating apparatus is possible far vortex-tube to use.
Keywords
Vortex tube; Compressed air; Mass flow rate ratio; Separation point; The axial temperature distribution; The radial temperature distribution;
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