The food & beverage industry is a massive end-user of heat exchangers, for applications such as thermoregulation of production goods or heat recovery. Special executions to meet the hygienic requirements of the sector are the ABC here.
Equipments are indeed exposed to frequent cleaning cycles, using aggressive and potentially corrosive chemical agents. The corrugation on plates creates several grooves and recesses where persistent residual biofilms can stuck, that must be removed in order too avoid growth and proliferation of microbes, fungus and bacteria.