One embodiment provides a heat conveyance system, including: a top plate having a length dimension, a width dimension, and a depth dimension, wherein the length dimension is greater than the width dimension; at least two side plates, wherein each of the two side plates is mechanically coupled to a bottom face of the top plate in a lengthwise direction and wherein, when mechanically coupled, the at least two side plates are in a perpendicular direction with respect to the top plate and have a space between the at least two side plates; and at least three sealing pieces located between and mechanically coupled to two adjacent side plates.

A falling film evaporator (100), a housing (101) thereof being accommodated with a heat exchange tube (304), a perforated plate (205) and a spraying tube (202), the perforated plate (205) being provided between the spraying tube (202) and the heat exchange tube (304), such that refrigerant sprayed from the spraying tube (202) is sprayed onto the surface of the heat exchange tube (304) by means of distribution of the perforated plate (205); spraying openings (301) on the spraying tube (202) have a strip shape, and the extension direction of the openings is perpendicular to the length direction of the spraying tube (202). By means of configuring the length direction of the spraying tube (202) to be substantially perpendicular to the length direction of the heat exchange tube (304), refrigerant sprayed from the spraying openings (301) flows substantially in the length direction of the housing (101), the flow path of the refrigerant being lengthened, avoiding uneven spraying on the surface of the heat exchange tube (304).

The disclosure relates to a heat exchanger. The heat exchanger includes a shell and heat exchange tube bundles located in the shell, the shell has an inlet and an outlet, and a refrigerant flows in through the inlet, exchanges heat with a fluid in the heat exchange tube bundles, and then flows out from the outlet, and the outlet is provided with an extension section that extends into an interior of the shell and has a receiving portion configured to receive at least a part of a liquid in the refrigerant flowing toward the outlet after heat exchange. The disclosure is easy to manufacture, install and maintain, and has a low cost. By optimizing the structure of an outlet pipeline of the heat exchanger, the influence of liquid carryover can be effectively controlled, and the overall performance, safety and reliability of the system can be enhanced.

A condenser (100), comprising a shell (112), an inlet pipe (120), and an anti-impact plate (204). The shell (112) has an accommodating cavity (202). The inlet pipe (120) is a circular pipe having a gradually increasing inner diameter from the inlet to the outlet. The inlet pipe (120) is arranged to pass through the upper end of the shell (112), the outlet of the inlet pipe (120) being accommodated in the accommodating cavity (202). The anti-impact plate (204) is accommodated in the accommodating cavity (202), and the anti-impact plate (204) is positioned below the outlet of the inlet pipe (120). There is a gap between the anti-impact plate (204) and the outlet through which fluid flowing from the outlet can flow. The condenser (100) can reduce the friction loss and local resistance of the refrigerant gas flowing into the inlet pipe (120), such that the dynamic pressure of the refrigerant gas entering the condenser (100) is partially converted into static pressure, and reduce the static pressure loss of the refrigerant gas entering the cylinder from the inlet, thereby increasing the condensing pressure of the refrigerant gas in the condenser (100) to enhance the heat exchange performance.

The invention relates to a device (1) for use in the production of a tube bundle (3) of a wound heat exchanger (100), wherein tubes (30) are wound in a plurality of tube layers (4) onto a core tube (300) running in an axial direction (z), webs (10) which run in the axial direction (z) being arranged between the tube layers (4). The invention further relates to a method for producing a tube bundle using said device (1).

A heat exchanger with increased heat transfer capability is provided. The heat exchanger includes first and second end plates, tubes extending between the first and second end plates and fins disposed between the tubes. The heat exchanger is disposable within and differs in shape from a space defined between first and second walls such that end corners of the first end plate abut the first wall and a point of the second end plate abuts the second wall, the first wall diverges from the end corners of the first end plate to define a first open region and the second wall diverges from the point of the second end plate to define second open regions. At least one of the first end plate and the second end plates includes enhancements fluidly communicative with the at least one corresponding one of the first open region and the second open regions.

The exhaust duct includes an exhaust collecting portion connected a heat exchanger and an exhaust guiding portion communicating with the exhaust collecting portion and extended upward in a state close to a side of a cylindrical body of the heat exchanger. The exhaust collecting portion includes a connection opening constituting an inner peripheral wall, into which a cylindrical outlet side connection portion at the lower end of the heat exchanger is fitted, and a groove provided on an outer peripheral side than the inner peripheral wall of the connection opening. The packing includes a seal portion sandwiched in a compressed state between the inner peripheral wall of the connection opening in the exhaust collecting portion and an outer peripheral wall of the cylindrical outlet side connection portion in the heat exchanger to constitute a seal and an anchor portion inserted into the groove of the exhaust collecting portion.

A method of passively suppressing noise within a heat exchanger comprises the steps of preselecting a plurality of sound wave travel distances formed between a plurality of surfaces within the heat exchanger to cause destructive interference of a preselected set of sound waves as the sound waves travel the preselected sound wave travel distances and assembling the heat exchanger to have the preselected plurality of sound wave travel distances formed between the plurality of surfaces formed within the heat exchanger.

An exhaust gas heat exchanger may include a tube bundle and a housing through which a coolant is flowable. The tube bundle may include a plurality of exhaust gas-conducting tubes held in a first tube base and a second tube base. The housing may enclose the tube bundle and may have face ends delimited by the first tube base and the second tube base. The housing may include a coolant inlet arranged in a region of the second tube base and a coolant outlet arranged in a region of the first tube base such that the coolant flows in counter flow relative to the exhaust gas. A plurality of coolant bypass passages may be arranged between the tube bundle and the housing. At least a subset of the plurality of coolant bypass passages may be at least partly blocked by an inlay structured and arranged to steer a coolant flow.

A water heater (WH) comprises: a primary heat exchanger (H1) that recovers heat from heating gas; a secondary heat exchanger (H2); and a heating gas flow regulator (48, 40a) for regulating the flow of heating gas so that heating gas flowing inside a first case (2) of the primary heat exchanger (H1) in an area near at least one side wall part (20) of the first case (2) is prevented from entering designated gaps (C2, C3) in the secondary heat exchanger (H2). Thus, high temperatures in side wall parts (50) of the secondary heat exchanger (H2) can be suitably prevented and heating efficiency can be suitably improved.