Printed Circuit Heat Exchangers (PCHEs) are a specialized type of heat exchanger that offers exceptional heat transfer performance in a compact footprint. They are widely used in industries such as aerospace, automotive, and electronics. PCHEs consist of a stack of thin metal plates, etched with microchannels that form intricate flow passages.

Microchannel heat exchangers are a type of heat exchanger with channels that have characteristic dimensions in the micrometer range. These tiny channels offer significant advantages in terms of heat transfer efficiency and compact design. In a microchannel heat exchanger, the two fluids flow through microchannels etched or machined into metal plates. The large surface area-to-volume ratio and short flow paths enable efficient heat transfer.

Compact heat exchangers are a type of heat exchanger designed to provide a high heat transfer rate in a small footprint. They are commonly used in applications where space is limited, such as in aerospace, automotive, and electronics industries.

A plate fin heat exchanger consists of a core, which is a stack of corrugated plates, and fins, which are attached to the plates to increase the surface area for heat transfer. One fluid flows through the channels formed by the plates, while the other fluid flows across the fins.