REFINED MODEL OF HEAT TRANSFER IN COMPOSITE BODIES REINFORCED WITH TUBES WITH A LIQUID HEAT-TRANSFER AGENT MOVING IN A DEVELOPED TURBULENT REGIME

The author has obtained equations describing thermal conductivity of composite bodies spatially reinforced with a system of smooth tubes in which an incompressible liquid heat-transfer agent is pumped in a developed turbulent regime. The corresponding boundary-value heat-conduction problem was formulated and its qualitative analysis was made. Specific calculations were performed for steady-state temperature fi elds in cylindrical concrete shells spirally reinforced with steel tubes through which a heat-transfer agent (air) is pumped. A study has been made of the influence of the reinforcement parameters and of the velocity and direction of the heat-transfer agent in the tubes and the dimensions of their cross sections on the temperature fi eld. It has been established that variation of these characteristics enables one to substantially change the intensity of heat removal from the shells, opening up wide opportunities for effi cient control of the heat transfer in them.
   
Author:  A. P. Yankovskii
Keywords:  heat conduction, composite structures, reinforcement with tubes, liquid heat-transfer agent, heat and mass transfer, structural model, turbulent flow.
Page:  968