HEAT EXCHANGER

Heat Exchanger is a device built for efficient Heat transfer.Heat transfer is the transition of thermal energy from a heated item to a cooler item and vice versa from one medium to another , whether medium separated by solid wall so that they never mix, or the media are in direct contact.

Heat exchangers classified according to their flow arrangement . 1.Paralell flow : Two fluids enter the exchanger at the same end, and travel parallel to one another to the other side 2. Counter flow: Two fluids enter the exchanger from opposite ends. The counter current design is most efficient, in that it can transfer the most heat Fluids: Anything which have the tendency to flow (liquid / gases).

Types of Heat Exchangers used in OCPLShell & tube Heat ExchangerPlate Heat Exchanger

Shell & Tube Heat ExchangerShell and tube heat exchangers consist of a series of tubes. One fluid enters the tube and other passing in between tubes or vice versa.

Shell & tube Heat exchanger(1-1 parallel flow)

Shell & tube Heat Exchanger( 1-2 cross flow)

Shell & tube Heat exchanger(2-2 countercurrent )

Plate Heat ExchangerPlate Heat Exchanger is composed of multiple, thin, slightly-separated plates that have very large surface areas and fluid flow passages for heat transfer. This stacked-plate arrangement can be more effective, in a given space, than the shell and tube heat exchanger (occupy lesser space)

Hot water preparation using with Plate Heat Exchanger

Insulation of Heat ExchangersTo avoid heat loss to atmosphereHot insulation : Glass wool Cold insulation : PUF

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