| Popis: |
The paper presents the comparative study results of the thermal characteristics of trays applicable for concentrating technological and waste liquids in direct contact with hot gas emissions. The dual-flow tray with large perforation, a baffle tray, similar to that of the mixing condensers, and a paset, i.e. a tray, consisting of a funnel and a cone with a smaller outer diameter, mounted above it, were tested.. The enthalpy exchange coefficient was chosen as a comparison parameter since it takes into account both “dry” (due to the temperature difference) and “wet” (due to evaporation) types of heat exchange. Using this coefficient, the degree of influence of liquid temperature and hydrodynamic factors (gas velocity and irrigation density) to the kinetics of enthalpy exchange during the interaction between air and 15% sodium chloride solution was evaluated. It was found out, that according to the degree of influence on the heat exchange intensity, factors arranged in the following sequence: air velocity, related to the entire apparatus cross-section; spray density and temperature. |
