Abstract: Device for thermal energy exchange between a first medium flow and a second medium flow, including a heat exchanger that facilitates alternating of the direction of the media flows therethrough, a first supply duct for conducting the first medium flow connecting to the heat exchanger, a first exhaust duct for conducting the first medium flow connecting to the first exhaust duct, a second supply duct for conducting a second medium flow connecting to the heat exchanger, and a second exhaust duct for conducting the second medium flow connecting to the heat exchanger. The device also includes a first heat exchanger element placed in one of the ducts and a second heat exchanger element placed in one of the ducts, wherein the heat exchanger elements are both included in a Carnot circuit having an expansion device and a compressor. The heat exchanger exchanges both thermal energy and phase transition energy.

Abstract: The invention relates to a recuperator (7), comprising at least a recuperator unit with heat-exchanging channels (5, 6) extending parallel to each other, a first header (63) placed on a first side of the recuperator unit and having a triangular cross-section, one surface of which connects to a first end of the heat-exchanging channels (5, 6) of the recuperator unit, a second header (64) placed on the second side of the recuperator unit and having a triangular cross-section, one surface of which connects to the second side of the heat-exchanging channels (5, 6) of the recuperator unit, supply ducts (1, 4) extending to a second surface of the first and the second header (63, 64) and discharge ducts (2, 3) extending from the third surface of the first and the second header (63, 64), wherein the supply ducts (1, 4) and the discharge ducts (2, 3) extend transversely of the longitudinal direction of the heat-exchanging channels (5, 6), wherein the supply ducts (1, 4) and the discharge ducts (3, 4) extend on the sid

Abstract: The invention relates to a heat exchanger provided with a number of sheets (4) stacked onto each other and extending parallel, wherein all sheets (4) are provided with profiles which form ducts (8) extending between the sheets (4) and wherein the ducts (8) present on either side of a sheet (4) extend parallel, wherein each of the sheets (4) lies adjacent on one of its sides to ducts (8) of the first type and lies adjacent on its other side to ducts (8) of the second type, wherein adjoining sheets (4) stacked onto each other are mutually connected at their edges extending parallel to the ducts (8), wherein the sheets (4) are stacked with the lower wall of the ducts (8) of an upper-lying sheet (4) above the upper wall of the ducts (8) of the underlying sheet (4).

Abstract: The invention relates to a method and a device for manufacturing a heat exchanger assembled from substantially flat elements provided with spacing profiles, wherein adjacent elements are provided on at least a part of their edges with spacing profiles, and wherein the method comprises of stacking the substantially flat elements onto each other until the required height is obtained, and mutually connecting the substantially flat elements at the edges of the elements, wherein the elements are connected by bringing only the side surfaces of the stack of elements into contact with a liquid forming a connection between the elements. This measure makes automated processing possible. The stack of elements is preferably immersed to a limited depth in a bath of the liquid forming a connection between the elements. The method is hereby easy to control, while the means necessary for performing thereof are relatively simple.

Abstract: The invention relates to a device for controlling the climate in a greenhouse, comprising a first heat exchanger (7) with a first series of channels (7a) and a second series of channels (7b), greenhouse supply means (1) leading from the greenhouse to the first series of channels, outside supply means (5) leading from outside to the second series of channels, greenhouse discharge means (4) leading from the device to the greenhouse and outside discharge means (6) leading from the device to the outside, wherein the greenhouse discharge means connect to the first series of channels and the outside discharge means connect to the second series of channels. The air is hereby retained in the greenhouse without supply of new air, while the temperature of the air in the greenhouse can be adjusted while maintaining a separation between greenhouse air and outside air.

Abstract: A housing with a first main wall and a second main wall which each extend perpendicularly of a temperature gradient, and auxiliary walls connecting both main walls and extending parallel to the temperature gradient, wherein the auxiliary walls connect with ribs to the main walls, and a filling placed in the housing and able to withstand pressure forces, wherein the pressure within the housing is reduced to a value at which no heat transfer of any significance takes place, and wherein the housing is manufactured from metal, wherein a strip of the auxiliary wall contacting a rib is welded to the main wall, and that a welding strip is welded onto the weld. With mere welding of a sufficiently thin metal foil it is practically impossible to obtain a weld of sufficient quality. With a sandwich weld it is possible to obtain a sufficiently strong and reliable welded connection, even when a very thin metal foil is used as auxiliary wall.

Abstract: A recuperator for transferring thermal energy from a warm gas flow to a cold gas flow, comprising: a first group of ducts with a first connection and a second connection; a second group of ducts with a third connection and a fourth connection, wherein the ducts of both groups extend mutually parallel; a first supply for supplying the cold gas flow to the first connection; a first discharge for discharging the cold gas flow from the second connection; a second supply for supplying the warm gas flow to the third connection; and a second discharge for discharging the warm gas flow from the fourth connection. The device provides temporarily and repeatedly alternating connections from the first supply to the fourth connection; the first discharge to the third connection; the second supply to the second connection; and the second discharge to the first connection.

Abstract: Device for thermal energy exchange between a first medium flow (15) and a second medium flow (16), comprising a heat exchanger (2), a first supply duct (3) for the conduction of the first medium flow connecting to the heat exchanger, a first exhaust duct (4), for conducting the first medium flow connecting to the first exhaust duct, a second supply duct (5) for conducting a second medium flow (16) connecting to the heat exchanger, and a second exhaust duct (6) for conducting the second medium flow (16) connecting to the heat exchanger, just as a first heat exchanger element (7) placed in one of the ducts, a second heat exchanger element (8) placed in one of the ducts, whereby the heat exchanger element are both included in a Carnot circuit that has an expansion device (11) and a compressor (10). The heat exchanger is set for exchange of both thermal energy and phase transition energy.

Abstract: The invention relates to a heat exchanger (1) for transferring thermal energy from a warm gas flow to a cold gas flow, comprising: a first group of ducts (2) with a first connection and a second connection; a second group of ducts (3) with a third connection and a fourth connection, which group is thermally coupled to the first group of ducts; first supply means (6) for supplying the cold gas flow to the first connection; first discharge means (7) for discharging the cold gas flow from the second connection; second supply means (8) for supplying the warm gas flow to the third connection; and second discharge means (9) for discharging the warm gas flow from the fourth connection, wherein the device comprises alternating means for temporarily and repeatedly alternating in pairs the supply and discharge means on the connections.

Abstract: A heat exchanger comprising first and second type of ducts extending mutually parallel and at least partially mutually adjacent. The duct cross-sections are connected in a regular pattern, such that each separating wall is bounded on at least one side by a first type duct and on the other by a second type duct.