DIRECT (COOLING TOWER) AND INDIRECT TYPES GASES AND LIQUIDS EVAPORATIVE COOLERS WITH LOWERED COOLING LIMIT

The fundamental decisions of water and air evaporative coolers of direct and indirect type are developed with the lowered limit of cooling (in relation to the temperature of wet thermometer of entering to the cooler current of air). Heat-mass-transfer apparatus of film-type is executed on the basis of multichannel compositions from polymeric materials with the channels of intricate configuration. A mathematical model describing the common heat-mass-transfer processes in the evaporative coolers of indirect type (IECg and IEC-Rg) has been proposed, the comparative analysis of the developed evaporative coolers abilities has been carried out on the basis of the obtained experimental data on heat-mass-transfer processes efficiency. The initial parameters (temperature and humidity ratio) of air flow and contacting flows of gas and liquid correlation were varied in the experiment. The special attention has been spared to the features of heat-mass-transfer processes flowing at the low temperature water and air cooling.