scope:

Introduction

A brazed aluminium plate-fin heat exchanger consists of a block (core) of alternating layers (passages) of corrugated fins. The layers are separated from each other by parting sheets and sealed along the edges by means of side bars, and are provided with inlet and outlet ports for the streams. The block is bounded by cap sheets at the top and bottom.

An illustration of a multi-stream plate-fin heat exchanger is shown in Figure 1-1.

The stacked assembly is brazed in a vacuum furnace to become a rigid core. To complete the heat exchanger, headers with nozzles are welded to the side bars and parting sheets adjacent to the ports.

The size of a brazed aluminium plate-fin heat exchanger shall be specified by width W, stacking height H and length L of the rectangular block. (Figure 1-2).

The three dimensions shall be given always in the same sequence as W x H x L, e.g. 900 x 1180 x 6100 mm.