The Air Preheater Company, Inc.

Harlen E Finnemore

Arthur A Oare

A packaged gas to gas heat exchanger is constructed by joining together a plurality of individual folded plate heat exchanger modules (16) in side by side and optionally end to end relation, without the need for an external housing surrounding the modules. A plurality of baffle plates (38), are prefabricated as part of each module, and joined to each other as the modules are joined, thereby defining a plurality of alternating chambers (46) for the entry or exit of different gases on either side of each folded plate (18). A closure arrangement and method for the longitudinal ends of the folded plates includes closure bars (94, 96) in interference engagement with the folds of the plate (18), and a separator plate (50) which holds the closure bars together and maintains the sealing relationship with the folded plate (18).

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Pocatelleo, ID, United States of America

Harlen E Finnemore