There are three basic types of Heat Transfer: conduction, convection and radiation. The two most common forms encountered in the chemical processing industry are conduction and convection. To transfer heat from one process to another, Heat Exchangers are used.
The plate is then expanded until the desired channel height is achieved. The channel height is the maximum space between the two plates. While the thickness and the spot pattern is determined by the design pressure. The channel height and the space between the pillow plates in a heat exchanger is determined by flow and allowed drop in pressure.
A plate-fin heat exchanger is a type of heat exchanger design that uses plates and finned chambers to transfer heat between fluids. It is often categorized as a compact heat exchanger to emphasise its relatively high heat transfer surface area to volume ratio.
For heat exchangers on applications which use polluted, shallow or brackish sea water as the coolant and have copper alloy tubes, it is recommended to run the heat exchanger in clean sea water for several weeks first, this creates a protective layer over the tube material which helps to protect against corrosion.