A method includes providing a first metal sheet and a second metal sheet, printing patterns of a plurality of obstructers, a plurality of channels, an evaporator channel, a condenser channel, and a connecting channel on the first metal sheet, bonding the first metal sheet and the second metal sheet to each other, separating the first metal sheet and the second metal sheet from each other to form the plurality of channels, the evaporator channel, the condenser channel, and the connecting channel by introducing a fluid between the first metal sheet and the second metal sheet, introducing working fluid in the plurality of channels, and sealing the first metal sheet and the second metal sheet.

A diffuser plate for a thermal transfer device can include a body having a number of first apertures and a second aperture that traverse therethrough, where the first apertures are asymmetrically arranged with respect to the second aperture. The first apertures can have a first shape and a first size, and where the first apertures are configured to receive a plurality of tubes. The second aperture has a second size, where the second size is larger than the first size.

The disclosure provides a heat exchanger connecting device and a heat exchanger. The heat exchanger connecting device includes a first sheet body and a second sheet body, wherein a plurality of protrusions are provided in a length direction of the first sheet body and the second sheet body, each of a plurality protrusions is provided with a through hole cooperating with a heat exchange tube, and the first sheet body and the second sheet body are buckled and fixed together. The connecting device in the disclosure can reduce the manufacturing cost and meet the requirements of mass production, is economical, allows the size of a flat tube micro-channel heat exchanger to be increased, and is not limited by the size of a stamping forming process, thereby economically solving the problem of the size of a heat exchanger, and increasing the application range of a product.

A heat exchanger tube includes a central tube portion having a C-shape cross-section. A pair of tube ends includes the C-shape cross-section or a different cross-section. A heat exchanger tube assembly and a method for manufacturing a C-shape heat exchanger tube are also described.

A method for manufacturing a heat dissipation device that includes stamping a composite plate including a welding material to form a first plate having a plurality of angled grooves, depositing powder in the plurality of angled grooves of the first plate, contacting the first plate to a second plate, and welding the first plate and the second plate together, and sintering powder to obtain a capillary structure.

Flat tube of a charge air heat exchanger, produced from at least one metal sheet that has been pressed to form an exchange plate, said pressing allowing a fluid inlet and a fluid outlet to be connected by a circuit through which a heat-transfer fluid circulates, said circuit comprising at least one metal insert placed within it and made from a material that creates a potential difference of 30 mV or more with the material of the flat tube.

Embodiment of the present disclosure relate to an improved main header for an internal combustion engine radiator. In one embodiment, a main header for an internal combustion engine radiator has cut-outs and V-shaped notches provided at the four corners of the main header. The cut-outs and V-shaped notches release the stresses after the main header is flanged, thereby ensuring the flatness or straightness of the main header. The main header further includes one or more strengthening strips disposed along the length sides and the width sides of the main header, and optionally at the region adjacent to the cut-outs, to further enhance the flatness of the main header.

The invention relates to a heat transfer tube (9) for falling film evaporation having a heating medium surface (21) to be heated by a heating medium, a falling film surface (20) to have spent liquor passing over it, and being made from an iron based high alloy stainless steel material with an alloy content above 16.00% for Chromium and above 1% for Nickel. The falling film surface of the heat transfer tube is equipped with one or several protrusions/indentations forming a multitude of stamped bumps (SB) on the envelope surface of a heat transfer tube such that the distance between adjacent stamped bumps (SB) along a line on the envelope surface parallel to the longitudinal axis of the heat transfer tube is within the range of 3 to 250 mm, said stamped bumps (SB) having a height (hp) in the range 0.3 to 5.0 mm, a width (wp) in the range 1.0-20 mm, and an inclination angle (a) versus a plane orthogonal to a longitudinal axis (CC) of the heat transfer tube in a range of 0-70 degrees so that each stamped bump (SB) is inclined and extends along at least a portion of the heat transfer tube or extend within a plane orthogonal to the longitudinal axis of the heat transfer tube. The invention also relates to a method for manufacturing said heat transfer tube.

The invention relates to a heat transfer tube (9) for falling film evaporation having a heating medium surface (21) to be heated by a heating medium, a falling film surface (20) to have spent liquor passing over it, and being made from an sheet metal material. The falling film surface of the heat transfer tube is equipped with a multitude of wire bumps (WB), each wire bump being spaced apart along the longitudinal axis (CC) of the heat transfer tube from a neighbouring wire bump by 3-300 mm, said wire bumps (WB) having a height (h) in the range 0.3 to 5.0 mm, a width (w) in the range 0.3-5.0 mm, and an inclination angle (a) versus a plane orthogonal to a longitudinal axis (CC) of the heat transfer tube in a range of 0-70 degrees. The invention also relates to a method for manufacturing said heat transfer tube.

The invention relates to a heat transfer tube (9) for falling film evaporation having a heating medium surface (21) to be heated by a heating medium, a falling film surface (20) to have spent liquor passing over it, and being made from an iron based high alloy stainless steel material with an alloy content above 16.00% for Chromium and above 1% for Nickel. The falling film surface of the heat transfer tube is equipped with at least one weld ridge (WR; WR.sub.1, WR.sub.2), said weld ridge having a height (h; h.sub.2) in the range 0.3 to 5.0 mm, a width (w; w.sub.2) in the range 0.5-15 mm, and an inclination angle (; .sub.1, .sub.2) versus a plane orthogonal to a longitudinal axis (CC) of the heat transfer tube in a range of 0-70 degrees so that each weld ridge is inclined and extends helically along at least a portion of the heat transfer tube or extend within a plane orthogonal to the longitudinal axis of the heat transfer tube and forms well ridge portions on the falling film surface such that the distance along the longitudinal axis of the heat transfer tube between adjacent weld ridge portions is within the range of 0 to 250 mm. The invention also relates to a method for manufacturing said heat transfer tube.