Patent ID: 7779899
Filing Date: 2010-08-24
Classification: F25J,F28D

Abstract:
1. A plate-fin heat exchanger comprising: a plurality of layers formed by a first layer alternating with a second layer for indirectly exchanging heat between at least a first fluid flowing through the first layer and at least second and third fluids flowing through the second layer; the plurality of layers being arranged in a stack, one on the other, to define a length and a width for the plate-fin heat exchanger by an outer periphery of the plurality of layers, the length being longer than the width; the first layer and the second layer configured such that the at least the first fluid flowing through the first layer and the at least second and third fluids flowing through the second layer all flow in a direction parallel to the width of the plate-fin heat exchanger during indirect heat exchange between the at least the first fluid and the at least the second and third fluids and each of the first layer and the second layer having fins; the second of the adjacent layers subdivided into at least two transverse sections, each of the at least two transverse sections partitioned into at least two flow passages for flow of streams of the at least second and third fluids, respectively; and opposed inlets and outlets positioned along the length of the first layer and the second layer such that the at least the first fluid flows through the first layer and the at least the second and third fluids flow through the at least two flow passages of each of the two sections of the second layer parallel to one another and in the direction parallel to the width of the plate-fin heat exchanger.