Heat exchanger

A plate-fin heat exchanger for transferring heat from a hot low pressure fluid to a cold high pressure fluid, the heat exchanger comprising:

• a plurality of adjacent heat exchange modules, each heat exchange module comprising a plurality of plates and fins that define a plurality of hot fluid flow paths and a plurality of cold fluid flow paths;
• a first entry manifold for delivering hot fluid to each of the plurality of the hot fluid flow paths and a second entry manifold for delivering cold fluid to each of the plurality of cold fluid flow paths;
• a first exit manifold for receiving hot fluid from each of the plurality of hot fluid flow paths and a second exit manifold for receiving cold fluid from each of the plurality of cold fluid flow paths;
• wherein the heat exchange modules are adjacently stacked and arranged such that the axial length of the heat exchanger is at least twice the height of the heat exchanger.

A plate-fin heat exchanger for transferring heat from a hot low pressure fluid to a cold high pressure fluid, the heat exchanger comprising:

• a plurality of adjacent heat exchange modules, each heat exchange module comprising a plurality of plates and fins that define a plurality of hot fluid flow paths and a plurality of cold fluid flow paths;
• a first entry manifold for delivering hot fluid to each of the plurality of the hot fluid flow paths and a second entry manifold for delivering cold fluid to each of the plurality of cold fluid flow paths;
• a first exit manifold for receiving hot fluid from each of the plurality of hot fluid flow paths and a second exit manifold for receiving cold fluid from each of the plurality of cold fluid flow paths;
• wherein the modules comprise a recess in each corner thereof for partially accommodating one of the manifolds, such that a portion of each manifold is accommodated within a region defined by the modules and a portion of each manifold is outside a region defined by the modules.