Heat exchange between a horizontal cylinder and three-phase fluidized bed

S. M. Kirov Ural Polytechnic Institute, Ekaterinburg. Translated from Inzhenerno-fizicheskii Zhurnal, Vol. 62, No. 2, pp. 180–187, February, 1992.     

Heat transfer between a fluidized bed and the surface

The functional dependence of the coefficient of conductive-convective heat transfer on the determining factors is predicted based on the two-zone model of heat transfer in concentrated dispersed media. The effect of the nonisothermal nature of the fluidized bed on the magnitude of the effective emissivity of the bed is taken into account. General formulas for calculating the coefficients of complex heat transfer were derived and checked in a very wide range of experimental data.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 58, No. 4, pp. 597–604, April, 1990.     

Mechanism of heat exchange between surfaces and a fluidized bed

Heat exchange between surfaces and fluidized beds is analyzed in terms of a solution for a problem with boundary conditions of the 1-st and 4-th kinds.     

Calculating radiant heat exchange between a fluidized bed and a surface

Radiant heat transfer in a nonisothermal fluidized bed is calculated.     

Heat transfer between a fluidized bed and an immersed cylinder

An analytical formula is given for the heat-transfer coefficient as a function of the frequency of density fluctuations in a fluidized bed and of the radius of curvature of the heat-transfer surface. Calculation coincides with the experimental data.     

Heat teansfer between a surface and a fluidized bed with packing

Heat transfer coefficients were measured under the following conditions: a fluidized bed with a spiral packing and a vertically immersed cylinder; a fluidized bed with a bundle of smooth tubes and with a bundle of lengthwise finned tubes.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 22, No. 3, pp. 397–402, March 1972.     

Heat transfer between a fluidized bed and a plate during drying

Journal of Engineering Physics and Thermophysics - Experimental data is given for the heat transfer between a fluidized bed and a plate during drying. Criterial equations are given for the...     

Model for heat exchange between a well-developed fluidized bed and a surface within the bed

A physical model for heat exchange between a fluidized bed and a surface in contact with it is proposed and discussed. The heat exchange is due to heat transfer by oscillating particles.     

Study of heat exchange between a model particle and a fluidized bed

An experimental study is made of heat exchange between an unsecured model particle and a fluidized bed. The test data is generalized with a dimensionless relation.     

Heat transfer between a fluidized bed and an embedded high-temperature surface

Experimental data on the transfer of heat between a fluidized bed and an embedded high-temperature heat source are considered, as well as the data pertaining to the heat-transfer coefficient as a function of the thermal conductivity of the fluidized gas.     

Heat transfer in a three-phase fluidized bed

The authors present results of a theoretical and experimental investigation of heat transfer between a fluid of a fluidized bed and the solid surface under conditions where air is bubbling through the bed.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 55, No. 5, pp. 784–788, November, 1988.     

Heat transfer in a circulating fluidized bed

On the basis of similarity theory a relationship is established for calculating the conductive-convective component of the coefficient of heat transfer in a circulating bed. Recommendations on the calculation of the total coefficient of heat transfer in a high-temperature bed are given. The gas gap between the heat-transfer surface and the first row of particles is evaluated. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 71, No. 3, pp. 447–453, May–June, 1998.     

Heat transfee between a horizontal cylinder and a fluidized bed with small packing

Measurements were made of heat transfer between horizontal cylinders (of 20, 30, and 50 mm diameter) and fluidized beds (of sand silica gel) with packings of spirals of wire of 10, 20 and 55 mm diameter. The data obtained were correlated and analytical relationships are presented.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 25, No. 3, pp. 471–475, September, 1973.     

Heat transfer in a retarded fluidized bed

An oscillation model of a fluidized bed is used to examine the effect of the degree of retardation of the bed on external heat transfer.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 50, No. 3, pp. 445–451, March, 1986.     

Heat transfer between a stream of liquid and a polydispersion in a fluidized bed

An approximate formula is derived for the heating time of particles in a fluidized polydispersion bed.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 22, No. 3, pp. 403–407, March, 1972.     

Resistance to motion of bodies in a fluidized bed

The force resisting the motion of bodies of revolution in a horizontal direction in a fluidized bed is measured. A generalization of the experimental data is used to obtain a relationship estimating the resistive forces arising in a fluidized bed for flow around obstacles.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 31, No. 6, pp. 1008–1012, December, 1976.     

Heat exchange and hydrodynamics during boiling on a horizontal tube bundle in a fluidized bed of solid particles

The results are given on the experimental study of heat transfer and hydrodynamics with boiling on a horizontal tube bundle located in a dispersed bed of solid particles and of this process hydrodynamics simulation by gas bubbling within the fluid filtration rate variation via the bed (0–3.5)v_zi.f. An analysis and correlation of experimental results are presented.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 43, No. 5, pp. 718–727, November, 1982.     

Intensification of heat exchange between a fluidized bed and containing walls with a nonuniform gas distribution

The effect of a nonuniform initial gas distribution on heat exchange between a bed and containing walls is studied.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 42, No. 6, pp. 902–907, June, 1982.     

Heat exchange in a ring granular bed

On the basis of a theoretical model of heat exchange in a granular bed, a simple dependence has been obtained for calculation of the heat-exchange coefficient in an extended ring bed. A comparison the dependence and the available experimental data has been made.     

Mechanism of external heat exchange in a nonuniform fluidized bed

The results of an experimental study of the porosity fluctuations in the boundary zone of a nonuniform fluidized bed are presented.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 29, No. 2, pp. 220–224, August, 1975.