Enthalpy exchanger elements which allow the creation of enthalpy exchangers whereby the efficiency of sensible energy exchange and latent energy exchange can be varied and controlled and especially improved. Also, a method for the production of enthalpy exchanger elements including: a) perforating a flat plate element (1) according to a predetermined perforation pattern (2, 2, . . . ) within the plate outer dimensions, or providing a plate element (1) with an inherent pore structure; b) applying to at least one side (1a) of the plate element (1) a thin polymer film (3) with water vapor transmission characteristics; c) forming the plate element (1) into a desired shape exhibiting a corrugation pattern (4, 4, . . . ), whereby the polymer film (3) is formed into the same corrugation pattern shape as that of the plate element (1).

Enthalpy exchanger elements which allow the creation of enthalpy exchangers whereby the efficiency of sensible energy exchange and latent energy exchange can be varied and controlled and especially improved. Also, a method for the production of enthalpy exchanger elements including: a) perforating a flat plate element (1) according to a predetermined perforation pattern (2, 2, . . . ) within the plate outer dimensions, or providing a plate element (1) with an inherent pore structure; b) applying to at least one side (1a) of the plate element (1) a thin polymer film (3) with water vapor transmission characteristics; c) forming the plate element (1) into a desired shape exhibiting a corrugation pattern (4, 4, . . . ), whereby the polymer film (3) is formed into the same corrugation pattern shape as that of the plate element (1).

Disclosed is a superposed heat exchanger, including a plurality of fins superposed up. Two opposite side edges of each fin are bent upwards to form a ventilating air path in coordination with an upper fin, and adjacent fins are arranged in a mode of vertical-horizontal alternating so as to form horizontal air paths and vertical air paths independent from each other with up-down intervals.

A composite storage tank module, tank, and arrangement wherein a composite storage tank module comprises at least one hollow section adapted to house a medium. The storage tank module is an elongated self-supporting structure produced from a composite material constituted of at least a first and second material. The composite storage tank module and arrangement are adapted to be embedded in a building structure, preferably a double flooring or a wall.

An indirect evaporative cooler core is manufactured from a continuous sheet of hydrophobic material. Flocking is provided on at least a partial surface area of at least one side of the sheet, to render the flocked surface area wettable. Air flow guiding structures are formed upon at least one of the first side and the second side of the sheet. Fold lines are defined in the sheet defining plates extending between adjacent fold lines. Slits are formed along the fold lines. Accordion pleating the sheet at the fold lines forms alternating wet and dry passages between the plates, the wet passages formed between opposing wettable surfaces, the dry passages formed between non-flocked surfaces, and the accordion pleating causes the slits in the folds to open and form air inlets and outlets in communication with the air flow passages.

A heating block for use in a water heater for heating water, having a heating block body, in particular made of plastic, for forming a cavity for conducting the water and for receiving at least one heating element. The heating block body includes a first partial shell having a first sub-cavity and a second partial shell having a second sub-cavity. The first and the second partial shells are assembled in a joining region and form between them the cavity from the two sub-cavities. The joining region is not formed, at least partially, in a joining plane and/or the first and the second partial shells are welded together by the supply of heat via a medium, in particular, an essentially abrasion-free and/or vibration-free welding process, and/or the first partial cavity has a greater depth than the second partial cavity or vice versa.

Disclosed is a superposed heat exchanger, including a plurality of fins superposed up. Two opposite side edges of each fin are bent upwards to form a ventilating air path in coordination with an upper fin, and adjacent fins are arranged in a mode of vertical-horizontal alternating so as to form horizontal air paths and vertical air paths independent from each other with up-down intervals.

A method for manufacturing a counter flow total heat exchanger is disclosed. The for comprises the steps of: inserting, between a pair of rollers (210, 210a) having protrusions formed on the surface thereof, a first paper having a first width, so as to form same into a single face corrugated cardboard sheet (T) having flow paths (111c, 121c); attaching the corrugated cardboard sheet (T) to a middle region of a second paper having a second width that is wider than the first width; cutting, into a length corresponding to guide corrugated cardboards (111,121), the second paper to which the corrugated cardboard sheet (T) is attached; and cutting the second paper to form a liner (130) having triangular resin tube coupling surfaces (133) formed on both sides of the cut guide corrugated cardboards (111, 121).

Hydronic boards of polymer foam with heat conductive plates. Straight sections have plates with omega or U shaped grooves pre-adhered to the boards which have wider grooves to accommodate the outsides of grooves in the plates without contact on both sides at once. Transitions from straight sections are accomplished with a kit of grooved foam boards and plates to be adhered after tubing is inserted into the grooves. The boards and plates have break-line cracks allowing them to be easily broken into convenient sizes.

A Phase Changing Material module for a heat exchanger apparatus has a first plate shell and a second plate shell, both shells having an undulated wave surface with a smooth, periodic oscillation. Both plates have a rectangular peripheral edge portion. The first and second plate shells are joined together along their peripheral edges to form an internal volume which is filled with a phase changing material.