In a header plateless type heat exchanger, to suppress temperature rise at an apical portion of a tube into which exhaust gas at high temperatures or the like flows, to thereby improve durability. A recessed groove portion 4c recessed inward with narrow width is formed on outer face side of each of a pair of plates, in parallel to a swelling portion 4 and in the approximately same length.

A system may include a turbine and a recuperative heat exchanger system. The recuperative heat exchanger system is configured to receive exhaust gases from the turbine. The recuperative heat exchanger system may include a precool section to cool the exhaust gases, a major heating section to receive the cooled the exhaust gases, and a minor heating section to receive the cooled the exhaust gases.

A transfer tube for a thermal transfer device can include at least one wall having an inner surface and an outer surface, where the inner surface forms a cavity, where the at least one wall further has a first end and a second end. The first end can be configured to couple to a terminus of a heat exchanger of the thermal transfer device. The second end can be configured to couple to a collector box of the thermal transfer device. At least a portion of the at least one wall can be disposed in a vestibule of the thermal transfer device. The cavity can be configured to simultaneously receive a first fluid that flows from the first end to the second end and a second fluid that flows from the second end to the first end.

A heat exchanger according to an embodiment of the present disclosure includes a housing, a gas inflow pipe configured to flow exhaust gas in the housing and a gas exhaust pipe configured to discharge the exhaust gas to the outside of the housing, a cooling water inflow pipe configured to flow cooling water in the housing and a cooling water outflow pipe configured to flow out the cooling water heat-exchanged with the exhaust gas to the outside of the housing, a plurality of tubes extending in the housing in the longitudinal direction of the housing and through which the cooling water flowing therein through the cooling water inflow pipe flows, and a plurality of baffles which are installed in the housing to insert the plurality of tubes thereinto and which are spaced apart from each other by a predetermined distance and are disposed, in which the baffle may be a first curved part configured to extend to be rounded with a first curvature, a first straight part configured to extend linearly from one end part of the first curved part, a second straight part configured to extend linearly from the other end part of the first curved part, and a second curved part positioned between the first and second straight parts and configured to extend to be rounded with a second curvature, and the first straight part and the second straight part may be formed in a direction crossing each other.

An integrated exhaust system apparatus to be mounted on an engine is provided. The apparatus includes an apparatus housing; an engine interface; an exhaust system interface with a first exhaust apparatus outlet configured to direct a first portion of exhaust through the housing wall; an EGR interface with a second exhaust apparatus outlet configured to direct a second portion of exhaust through the apparatus housing wall; and an exhaust manifold arranged within the apparatus interior. The exhaust manifold includes a first manifold outlet configured to direct the first portion of exhaust out of the manifold interior and a second manifold outlet configured to direct the second portion of exhaust out of the manifold interior. An EGR cooler is arranged within the apparatus interior with passages fluidly coupled such that the second portion of exhaust is directed out of the apparatus housing via the second exhaust apparatus outlet.

A condensation heat exchanger including at least one helically-coiled tube, inside which a fluid to be heated can circulate, a deflector, and a shell mounted inside which the tube, the shell having a gas-discharge sleeve having a bottom and a facade for feeding and/or producing a hot gas, inside the shell. The shell comprises a tubular metallic shroud closed at its two ends by a facade and a bottom, wherein the bottom is made of composite plastic, the rear edge of the shroud has a plurality of fastening tongues, the bottom has, at its periphery, a plurality of fastening slots arranged along at least part of its circumference, each fastening slot bordered longitudinally by a first longitudinal rib projecting outwardly, and wherein each fastening tongue is inserted into a fastening slot and folded twice around the first rib.

A transfer tube for a thermal transfer device can include at least one wall having an inner surface and an outer surface, where the inner surface forms a cavity, where the at least one wall further has a first end and a second end. The first end can be configured to couple to a terminus of a heat exchanger of the thermal transfer device. The second end can be configured to couple to a collector box of the thermal transfer device. At least a portion of the at least one wall can be disposed in a vestibule of the thermal transfer device. The cavity can be configured to simultaneously receive a first fluid that flows from the first end to the second end and a second fluid that flows from the second end to the first end.

The present invention relates to a heat exchanger of an exhaust heat recovery apparatus having a simple structure which is configured such that exhaust gas is evenly distributed, thereby preventing a boiling phenomenon wherein coolant water is boiling, and improving efficiency of heat exchange and durability of the apparatus.

A heat exchange array arranged to be used in a heat exchange unit and further arranged to recover energy from an exhaust gas, comprising: a first heat exchange tube and a second heat exchange tube, each arranged to carry a heat exchange medium and further each comprising a series of external fins; and wherein the first heat exchange tube comprises a left-handed helically coiled tube having an first elastic stress, and the second heat exchange coil comprises a right-handed helically coiled tube having a second elastic stress, and wherein the first and second heat exchange tubes are interconnected such that the first elastic stress opposes the second elastic stress.

A hot water pressure washer employs an internal combustion engine with a drive shaft having an exhaust manifold fluidly connected to an exhaust water heat exchanger. The engine is driveably connected to a hydrodynamic heater, and a high-pressure pump for generating a stream of high-pressure fluid. The hot water pressure washer captures 80-90% of the thermal energy generated during combustion processes of the engine for heating water.