A heat exchanger assembly and a hot water appliance including a heat exchanger and a burner assembly. The heat exchanger assembly includes a head portion including a water inlet for receiving water at a first temperature, a water outlet for outputting water at a second temperature higher than the first temperature, and a gas inlet port for receiving combustion gases. The heat exchanger assembly also includes a tube bundle including a plurality of combustion chamber tubes positioned about the gas inlet port, and a plurality of condensation chamber tubes positioned adjacent and parallel to the plurality of combustion chamber tubes. Each combustion chamber tube has a first surface shape and each condensation chamber tube has a second surface shape that is different than the first surface shape.

A Plate and Shell type plate heat exchanger, which comprises an inner shell (9) completely surrounding a plate pack (2) and inner end plates (11a, 11b) in the direction of the ends of the plate pack. The inner shell (9) is by its inner surface arranged into contact with the outer edge of the baffle plates (8a, 8b) arranged on the surface of the plate pack and by its outer surface the inner shell (9) is arranged to support itself against the inner surface of the shell (3) of the outer casing of the heat exchanger. The inner end plates (11a, 11b) are supported by their outer surface against the inner surface of the end plates (4a, 4b) of the outer casing.

Shell and tube heat exchanger (1) comprising a first outer shell (2) and a tube bundle (3), inlet and outlet interfaces communicating with the shell side and with the tube side for a first fluid and for a second fluid respectively, wherein the exchanger comprises a second shell (4) which is inside said first shell (2) and surrounds said tube bundle (3); said second shell (4) comprises at least one releasable longitudinal joint (32) and a plurality of longitudinal sections connected by releasable joints; said second shell (4) delimits the shell side of the exchanger (1) around said tube bundle (3), and further defines a flushing interspace (5) communicating with said shell side, said first fluid flows through said shell side along one or more longitudinal passages, and said first fluid and said second fluid are counter-current along said one or more longitudinal passages.

This disclosure describes an improved heat transfer system for use in reaction vessels used in chemical and biological processes. In one embodiment, a heat transfer baffle comprising two sub-assemblies adjoined to one another is provided.

The present invention relates to a heat exchanger. The heat exchanger includes: a heat exchanger cartridge and a heat exchanger shell. The heat exchanger cartridge includes: a first end with a water inlet and outlet; a second closed end; a plurality of tubes that extend between the first end and the second end; and a plurality of baffles attached to one or more of the tubes. The heat exchanger shell includes: a hollow body with a first end having an opening for receiving the heat exchanger cartridge, and a second closed end; a hypochlorite inlet positioned at the first end; and a hypochlorite outlet positioned at the second end. The plurality of tubes can each independently have a length within a range of from 37 and 80 inches, and an inner diameter within a range of from 0.170 inches and 0.190 inches.

The present invention relates to a heat exchanger capable of ensuring sufficient cooling performance and drainage performance even in a narrow width, and the heat exchanger includes first and second header tanks into and from which a cooling fluid is introduced and discharged, the first and second header tanks being spaced apart from each other at a predetermined distance, and a core part disposed between the first and second header tanks, having a plurality of tubes and fins, and configured to perform a movement of the cooling fluid and heat exchange of the cooling fluid, in which a predetermined space is formed in a longitudinal direction in a separation wall, which divides a flow path of the first or second header tank into a plurality of spaces in a width direction, so that condensate water is discharged.

A microchannel evaporator includes a plurality of microchannels. Each of the plurality of microchannels includes a first end and a second end. A first end-tank is coupled to each first end of the plurality of microchannels and a second end-tank is coupled to each second end of the plurality of microchannels. An inlet is coupled to the first end-tank for receiving a fluid into the microchannel evaporator and an outlet is coupled to the second end-tank for expelling the fluid from the microchannel evaporator. Each microchannel of the plurality of microchannels is substantially U-shaped.

Apparatus for a steam generator that employs tube support plates within a shroud that is in turn disposed within a shell. The tube support plates are made of a material having a coefficient of thermal expansion lower than that of the shroud. The tube support plates are aligned during fabrication, with minimal clearances between components. Using a tube support displacement system, a controlled misalignment is then imposed on one or more tube support plates, as the steam generator heats up. The tube support plate displacement system has only one part, a push rod, which is internal to the steam generator shroud, thereby minimizing the potential of loose parts. The tube support plate displacement system can be used to provide controlled misalignments on one or more tube support plates, in the same or varying amounts and directions, and with one or more apparatus for each individual tube support plate.

A tubular heat exchanger comprising a plurality of shell-side and tube-side fluid passes. The heat exchanger includes an elongated cylindrical shell, a head coupled thereto, and a tube bundle positioned in the shell and supported in part by a tube sheet attached to the head. In one embodiment, the shell of the heat exchanger comprises a plurality of vertically stacked shell-side compartments each defining a shell-side pass. The head of the heat exchanger comprises a plurality of tube-side compartments each defining a tube-side pass. A tube-side fluid enters the head and flows through the tube bundle progressively through a series of tube-side passes to heat the fluid with a shell-side fluid. Each shell-side pass contains multiple tube-side passes. In one embodiment, the tube-side fluid performs a plurality of horizontally arranged tube-side fluid passes in each vertically stacked shell-side fluid pass before cascading vertically to a next shell-side fluid pass.

This disclosure describes an improved heat transfer system for use in reaction vessels used in chemical and biological processes. In one embodiment, a heat transfer baffle comprising two sub-assemblies adjoined to one another is provided.