Thermal equilibrium equations of the bearing oil cavity are established with thermal network method. These thermal equilibrium equadons are solved by quasi - Newton technique. The calculation results of temperature fields are obtained under 10 different operating modes.
This paper discusses the asymptotic characteristics of the temperature field in pure radiant heat transfer system with a heat source at constant temperature. With respect to the corresponding thermal equilibrium equations,the sufficient conditions of their stability are given and successively the stable solutions are deduced.
Based on the principle of hydromechanics and thermodynamics the mixing-pump pressure-difference control method was put forward in order to solve the balance problem in the above-mentioned condition. The adjustment principle and process of the method were analyzed by using energy equations and hydraulic diagram. Some calculating formulas for related parameters were presented according to the thermal equilibrium equations.
Based on the principle of hydromechanics and thermodynamics the mixing-pump pressure-difference control method was put forward in order to solve the balance problem in the above-mentioned condition. The adjustment principle and process of the method were analyzed by using energy equations and hydraulic diagram. Some calculating formulas for related parameters were presented according to the thermal equilibrium equations.
The zone method,proposed first by H.C.Hottel and E.S.Cohen,has been increasingly used nowadays in thermal process analysis and furnace design.A major problem with respect to the various existing zone methods is that the thermal radiation calculation of heat exchange between two subzones is too complicated and that the nonlinear equations are difficult to solve.The local dichotomy technique,through which the induced equations for calculating the direct exchange areas may be obtained,p...
Some expressions are obtained for calculating outside pipe wall temperature of double-pipegas radiant burner bed on several reasonable assumptions and basic thermal equilibrium equations.Appling the exprasions,the heat output and thermal efficiency of the burner for both laminar and tur-bulent flams can be calculated,The results of calculation are in good agreement with that of experi-ments.The calculation can be used to guide the design and the use of this kind of burner.
Thermal equilibrium equations of the bearing oil cavity are established with thermal network method. These thermal equilibrium equadons are solved by quasi - Newton technique. The calculation results of temperature fields are obtained under 10 different operating modes. These results are approximately consistent with the measured ones.