What is the write way to have optimum distribution of cooling air in agrate cooler? Is it diffrent for conventional grate cooler, mosern coolers ? What should be the area of the static grate with respect to rest of cooler area? How can we make a proper air distribution of cooling air(what is the basis)? I have static grate , than CFG plates & than conventional plates from inlet to outlet? it is a retrofit of FLS 924S with three grates? raj