A stripper for stripping a urea/carbamate mixture. The stripper comprises a shell and a plurality of tubes disposed within the shell. A shell-side space is provided between the tubes and the shell. A first heating fluid inlet, a second heating fluid inlet, and a heating fluid outlet are in fluid connection with the shell-side space. The second heating fluid inlet is disposed between the first heating fluid inlet and the heating fluid outlet. Related uses, systems, and methods are provided as well.

The present disclosure relates to a heat exchanger that is characterized by including at least one collector and at least one tube, in which case the tube is installed in the collector by at least one seal disposed between the collector and the tube in such a manner that fluid connection is possible between the collector and the tube, wherein the tube includes at least one reinforcing element. The present disclosure also relates to a method of installing a heat exchanger and a method of manufacturing a heat exchanger, in which case at least one tube is installed in at least one collector by at least one seal disposed between the collector and the tube in such a manner that fluid connection is possible between the collector and the tube, wherein at least one reinforcing element is provided in or to the at least one tube.

Shell-and-tube equipment includes a shell that surrounds a tube bundle, wherein the tube bundle includes a plurality of tubes. At least one end of each tube is provided with a joint to an inlet tube-sheet at respective tube-sheet bores for inletting a fluid in the shell-and-tube equipment. The inlet tube-sheet is provided with a first side, which receives the fluid from an inlet channel located upstream of the inlet tube-sheet, and with a second side, which is opposite to the first side and on which the tubes are joined. The inlet tube-sheet is connected to each tube of the tube bundle on the second side. The shell-and-tube equipment includes an anti-erosion device including a first outer tubular element and a second inner tubular element for at least a corresponding tube. Both the outer tubular element and the inner tubular element have a respective longitudinal axis that is parallel to the longitudinal axis of the corresponding tube. A first tubular end of the outer tubular element is connected to the first side of the inlet tube-sheet, whereas a second free tubular end of the outer tubular element extends in the inlet channel. The inner tubular element is inserted into the outer tubular element, so as to substantially cover the entire internal surface of the outer tubular element, and into at least a portion of the corresponding tube to a point which is beyond the joint or the second side of the inlet tube-sheet whichever is further from the outer tubular element. The inner tubular element is joined to the outer tubular element by means of mechanical or hydraulic expansion of at least a first tubular portion of the inner tubular element against the internal surface of the outer tubular element.

In one aspect, a tubular membrane assembly is provided for a heat exchanger. The tubular membrane assembly includes a header having a header body, a tubular membrane, and a fitting connecting the tubular membrane to the header body. The fitting is configured to form a fluid tight connection between the fitting and the tubular membrane. The tubular membrane assembly further includes potting of the header keeping the tubular membrane connected to the fitting.

The invention relates to an heat exchanger possibly for exchanging heat within a vehicle. The heat exchanger includes a housing with an inlet port, an outlet port, an interior facing surface defining a coolant channel, a first opening surrounded by an exterior facing surface, and a second opening defined by a first inner diameter. A tube assembly defines a plurality of exhaust gas flow channels and a plurality of coolant cross channels within the housing. A first diffuser directs a first fluid into the tube assembly. The first diffuser is joined to the exterior facing surface, and this joint is sealed. A cap surface of the first diffuser encloses the first opening and caps the coolant channel. The first diffuser is joined to a first header plate, which separates the first fluid from a second fluid within the coolant channel. A second diffuser defines a directs the first fluid out of the tube assembly. The second diffuser is located within the second opening and sealed to the second opening by seals around the second diffuser. The second diffuser is not fixedly attached to the housing and can move within the second opening.

The invention relates to a heat exchanger (1), in particular oil-air cooler, for heat exchange between a first fluid (F1) and a second fluid (F2), having: at least a first row (R1) of tubular elements (2) and a second row (R2) of tubular elements (2), each for passage of the first fluid (F1), a flow channel (3) for the second fluid (F2) being formed between the first and second rows (R1, R2) of tubular elements (2); a collection vessel (4) at one end (ES) of the tubular elements (2); and a distribution vessel (5) at the other end (EV) of the tubular elements (2). Guiding elements (7) for guiding the second fluid (F2) extend along the flow channel (3) between the outer sides (2A) of adjacent tubular elements (2M, 2N) of the first and second rows (R1, R2) of tubular elements (2), said guiding elements (7) each having a plate part (8), the wall thickness (8W) of which is smaller than the largest cross-sectional dimension of the tubular elements (2) connected thereto. At least one adjustment device (30) is provided for adjusting the relative position of two guiding elements (7) about a pivot axis (31) running substantially in the direction of the longitudinal axes (L) of the tubular elements (2).

A tube stiffener for insertion into a plurality of radiator tubes includes a plurality of inserts and first and second connection strips. Each insert is configured to extend into at least one of the plurality of radiator tubes to strengthen the plurality of radiator tubes. The plurality of inserts include a first end and a second end and a tab projecting from each of the first end and the second end. The first connection strip is fixed to the tab on the first end and the second connection strip is fixed to the tab on the second end. Each of the connection strips connects the plurality of inserts to each other.

A heat exchanger for an appliance having a burner includes at least one tubular heat exchanger section extending from an inlet end aligned with the burner and an outlet end. The inlet end includes a first portion having a first inner diameter and a second portion having a second inner diameter greater than the first diameter.

A heat exchanger includes a shell, and a tube assembly disposed in the shell, the tube assembly including at least one tube, wherein the tube has a pair of end sections having a first diameter and a central section extending between the end sections having a second diameter that is greater than the first diameter.

A fuel-fired heating appliance comprises a burner and a first housing adjacent the burner so that an interior of the first housing receives combustion gasses from combustion at the burner. A heat exchanger defines a second housing with an inlet proximate an outlet of the first housing so that the inlet of the second housing receives combustion gasses from the outlet of the first housing, and wherein the first and second housings attach at an interface. A barrier extends within, and across an interface between, the outlet of the first housing and the inlet of the second housing and defines a thermal resistance that inhibits heat transfer from the combustion gasses to the interface.