Digitale Bibliotheek
Sluiten Bladeren door artikelen uit een tijdschrift
 
   volgende >>
     Tijdschrift beschrijving
       Alle jaargangen van het bijbehorende tijdschrift
         Alle afleveringen van het bijbehorende jaargang
           Alle artikelen van de bijbehorende aflevering
                                       Details van artikel 1 van 8 gevonden artikelen
 
 
  CHARACTERISTICS AND FLOW VISUALIZATION OF A THERMOSYPHON IN MELTS INSIDE A COMPOSITE HEAT EXCHANGER TUBE
 
 
Titel: CHARACTERISTICS AND FLOW VISUALIZATION OF A THERMOSYPHON IN MELTS INSIDE A COMPOSITE HEAT EXCHANGER TUBE
Auteur: Yang, Wen-Jei
Zhang, Nengli
Lee, C. P.
Ho, Yuen-Sang
Chiou, Jeff
Verschenen in: Experimental heat transfer
Paginering: Jaargang 3 (1990) nr. 4 pagina's 355-370
Jaar: 1990-11-01
Inhoud: The characteristics of a thermosyphon in molten aluminum inside the annulus of a composite heat exchanger tube has been studied. The physical system consists of two concentric, hollow, carbon steel cylinders press-fitted with a hollow aluminum cylinder in the annulus. It is heated by a helical electric heater wound around the outer surface and is cooled by air flowing through the inner tube. The lower half of the heater surface is insulated to create enough temperature difference to initiate thermosyphon action in the molten aluminum. The orientation of the composite structure is varied from the horizontal to an inclined, to a vertical position. The temperature-time history of the aluminum is monitored at strategic locations to determine the characteristics and mechanisms of thermosyphoiting. flow instability is manifested in the form of temperature fluctuations. The phenomenon have also been studied by means of flow visualization in a transparent composite heat transfer tube with one-half of the outer surface wound with a sheet heater. A molten paraffin wax mixed with an aluminum pigment as the tracer confined in the annulus is cooled by a water stream flowing through the inner tube.
Uitgever: Taylor & Francis
Bronbestand: Elektronische Wetenschappelijke Tijdschriften
 
 

                             Details van artikel 1 van 8 gevonden artikelen
 
   volgende >>
 
 Koninklijke Bibliotheek - Nationale Bibliotheek van Nederland