MATHEMATICAL MODEL AND THERMOHYDRAULIC CHARACTERISTICS OF PACKED SCRUBBERS OF CONDENSATION COOLING OF A GAS

The authors have solved scientifi c and technical problems of mathematical modeling and calculation of thermal effi ciency, and also of structural characteristics of packed scrubbers of condensation water cooling of a gas in a fi lm countercurrent regime. By simultaneous solution of the heat-balance equation and the expressions for thermal effi ciencies of a packed scrubber in the gas and liquid phases, a relation has been established between the thermal effi ciencies of condensation cooling of the gas and heating of the water. With an assigned temperature regime of cooling of the gas and its thermodynamic state, a required gas-phase thermal effi ciency is computed. To calculate the actual thermal effi ciency of a packed bed, use is made of a cellular model of the fl ow structure in the liquid and gas phases. An expression has been obtained for calculating the height of the packed bed from the assigned thermal effi ciency, structural characteristics of the packing, and fl ow rates of the gas and water. Agreement with the existing experimental data has been shown and a calculation algorithm has been given. Conclusions on the most effi cient packing structures have been drawn
   
Author:  A. G. Laptev and E. A. Lapteva
Keywords:  thermal effi ciency, random and regular packings, fl ow structure, fi lm scrubbers
Page:  257