Abstract
Experiments are performed of plate-type evaporative coolers in which almost all of the spray water forms vertical falling films along parallel plates with tubes. Data on heat-transfer coefficient and mass-transfer coefficient are presented to be compared with those of multi-tubular evaporative coolers in which the spray water forms both films and droplets. Typical examples of characteristic curves for the operation of evaporative coolers are also presented, which can be obtained by means of the method described in Part 1.