A lightweight, high-efficiency alternating channel counter-flow heat exchanger structure is disclosed. A matrix of alternating hot and cold channels defining a heat exchanger structure is provided. A portion of each of the inlets and outlets of each of the hot and cold channels is blocked to prevent fluid flow through the blocked portion, thus creating hot-only and cold-only fluid communication regions on the ends of the heat exchanger structure. Alternating hot and cold headers provided on each end of the heat exchange structure service the respective hot and cold channels. The partial blocking structures on the channel-ends enable a single hot or cold header/plenum to be offset with respect to individual rows of channels and thus service a pair of adjacent rows of alternating hot and cold channels in the matrix of channels. The true alternating channel counter-flow design provides a higher heat transfer rate than a similarly-sized cross-flow design.

This disclosure describes an improved heat transfer system for use in reaction vessels used in chemical and biological processes. In one embodiment, a heat transfer baffle comprising two sub-assemblies adjoined to one another is provided.

This disclosure describes an improved heat transfer system for use in reaction vessels used in chemical and biological processes. In one embodiment, a heat transfer baffle comprising two sub-assemblies adjoined to one another is provided.

Disclosed is a three-fluid heat exchanger (1) comprising a stack of plates (20a, 20b, 20c, 30a, 30b, 30c) and: a first circuit (11) for the circulation of a first heat-transfer fluid between a first inlet manifold (11a) and a first outlet manifold (11b) for the first heat-transfer fluid, a second circuit (12) for the circulation of a second heat-transfer fluid between a second inlet manifold (12a) and a second outlet manifold (12b) for the second heat-transfer fluid, a third circuit (13) for the circulation of a third heat-transfer fluid between a third inlet manifold (13a) and a third outlet manifold (13b) for the third heat-transfer fluid, the stack of plates (20a, 20b, 20c, 30a, 30b, 30c) forming an alternation of first (A) and second (B) circulation spaces for the circulation of heat-transfer fluid, stacked in the direction of stacking of plates (20a, 20b, 20c, 30a, 30b, 30c), the first circuit (11) being arranged within the first circulation spaces (A) and the second (12) and third (13) circuits being jointly arranged within the second circulation spaces (B).

A double wall plate heat exchanger (100) comprising a plurality of double wall plate heat exchanger elements (110, 120) formed with a ridges (R) and grooves (G) providing contact points between neighboring heat exchanger elements (110, 120) under formation of flow channels between them for fluids to exchange heat. The flow channels are in selective fluid communication with each other through port openings. Each of the heat exchanger elements (110, 120) comprises at least two joined plates and leakage channels are formed between the plates of each heat exchanger element (110, 120) for fluid leaking from a flow channel. The plates are provided with cooperating elevations (190) and indentations (200) forming leakage channels (210) extending across the ridges and grooves between the plates of each heat exchanger element (110, 120). At least one connecting space is formed between the plates to connect the leakage channels within the same heat exchanger element (110, 120), and each of the connecting spaces is connected to a leakage outlet.

A temperature control device for a gaseous media. The temperature control device includes a first heat exchanger layer in which a medium channel for a gas to be temperature-controlled is formed, a second heat exchanger layer which extracts heat from and/or supplies heat to the first heat exchanger layer, and a diffusion layer which is arranged between the first heat exchanger layer and the second heat exchanger layer. The diffusion layer is open to the gas to be temperature-controlled.

A heat exchanger comprising packages (A, B) which comprise turbulising elements (1) which turbulise a flow of a working fluid between the two walls (2, 2) inside the packages (A, B). Packages (A, B) are set together alternately to accommodate the working fluid flowing through them. Packages (A, B) are connected to each other via pass-through connectors (6) which are fitted, respectively, in the inlet openings (4, 5) and outlet openings (4, 5) for the working fluids. The connector (6) comprises an external portion (6a) and an internal portion (6b) which are connected to each other with a transverse wall (6c). The internal portion (6b) of the connector (6) is connected to the walls (2, 2) of the respective package (A, B) and closes the corresponding inlet/outlet opening (4, 4, 5, 5), while the external portion (6a) of the connector (6) is connected to the neighbouring walls (2, 2) of the neighbouring packages (A, B) and connects the neighbouring areas of flow of the same working fluid. The heat exchanger can be manufactured by the diffusion bonding method.