Plate & Frame
A plate heat exchanger consists of a plate pack of corrugated metal plates with portholes for the passage of two fluids between which heat transfer takes place. The plate pack is assembled between a frame plate and a pressure plate and compressed by tightening bolts. The heat transfer plates are fitted with gaskets, which seals the channel and directs the fluids into alternate channels. The number and size of the plates are determined by the flow rate, physical properties of the fluids, pressure drop and temperature programme. The plate corrugation promotes fluid turbulence and supports the plate against differential pressure.