A new type filler-plate combination evaporative cooler is designed.The fillers and heat exchanger plates which overlap together are used as heat exchanger components.Thus

the heat transfer is enhanced by mixed strengthened cooling between the fillers and the plates.Moreover

a plate evaporator cooler performance test system was built to study the influence of spray density

air volume

ambient wet bulb temperature and flier layer on plate evaporator cooler's heat transfer property.The results show that:increasing the air volume and spray water flow can improve cooling efficiency of the evaporative cooler

and there is an optimum spray density;during the experiment

when the air wet bulb temperature rises by 9℃

the outlet temperature of working fluid in plates increases by 2℃ and the cooling efficiency is improved by 3%;with the same spray density or air flow

the heat density increases with the filler layer thickness.