A cooker with a gasket may include a top plate on which a plurality of burners may be placed; a manifold panel provided in front of the top plate and including thereon a plurality of knobs to control output powers of the plurality of burners; and a gasket that extends along a front end of the top plate and is compressed between the top plate and the manifold panel to hermetically seal the top plate and the manifold panel.

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 invention relates to the field of fluid heat transfer, and discloses a heat transfer enhancement pipe as well as a cracking furnace and an atmospheric and vacuum heating furnace including the same. The heat transfer enhancement pipe (1) includes a pipe body (10) of tubular shape having an inlet (100) for entering of a fluid and an outlet (101) for said fluid to flow out; the internal wall of the pipe body (10) is provided with a fin (11) protruding towards the interior of the pipe body (10), the fin (11) spirally extends in an axial direction of the pipe body (10), wherein at least one of a heat insulator (14) and a heat insulating layer (17) is provided at the outside of the pipe body (10). The heat transfer enhancement pipe can reduce thermal stress of itself, thereby increasing service life of the heat transfer enhancement pipe.

The present invention relates to the field of fluid heat transfer, and discloses a heat transfer enhancement pipe as well as a cracking furnace and an atmospheric and vacuum heating furnace including the same. The heat transfer enhancement pipe (1) includes a pipe body (10) of tubular shape having an inlet (100) for entering of a fluid and an outlet (101) for said fluid to flow out; internal wall of the pipe body (10) is provided with a fin (11) protruding towards interior of the pipe body (10), wherein the fin (11) has one or more fin sections extending spirally in the axial direction of the pipe body (10), and each fin section has a first end surface facing the inlet (100) and a second end surface facing the outlet (101), at least one of the first end surface and the second end surface of at least one of the rib sections is formed as a transition surface along spirally extending direction. The heat transfer enhancement pipe can reduce thermal stress of itself, thereby increasing service life of the heat transfer enhancement pipe.

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 present disclosure relates to a heat transfer system 1 for transferring heat between a first fluid and a second fluid. The system 1 has an arrangement 2 composed of pipe elements 3, 3a, 3b, 3c for passing through the first fluid, one or more pipe bottoms 5 having a through opening 6, and one or more sealing elements 7 having a through opening 8. The pipe elements 3, 3a, 3b, 3c are formed of a flat pipe having a first region 10 having a first height X and a width W and one or more second regions 11 having a support surface 13 arranged on one end portion of the pipe elements 3, 3a, 3b, 3c and having a second height Y, respectively. The sealing element 7 is arranged between the edge of the through-hole 6 of the pipe bottom 5 and the support surface 13, respectively, and has a specific wall thickness G. The pipe elements 3, 3a, 3b, 3c having a wide side are arranged in a state aligned parallel to each other and at an interval F with respect to each other in the first region 10. A web 5-1 having a height H is provided between the through openings 6 arranged adjacent to each other of the pipe bottom 5. The deformation degree of the end portion of the pipe elements 3, 3a, 3b, 3c in the height direction c, which is placed in a range from the maximum value CM.sub.max to the minimum value CM.sub.min, is previously set with reference to the dimension relationship.

The present disclosure relates to a heat exchanger including a plurality of fluid guiding metal pipes (2) having pipe ends (3) arranged side by side at intervals, at least one pipe bottom (4) made of plastic and having receiving through-holes (5) in which the pipe ends (3) may be received, and a collection box (6) made of plastic and which may be connected to the pipe bottom (4) by a locking device formed between the pipe bottom and the collection box, wherein a seal (9) may be inserted between the pipe bottom (4) and the collection box (6), and the seal ensures press-fit of the pipe bottom (4) on the pipe ends (3) and seals the collection box (6) against the pipe bottom (4) and the pipe bottom (4) against the pipe ends (3).

The invention concerns a header (4) for a heat exchanger adapted to have a refrigerant fluid (FR) passed through it and comprising a wall (4a-4d) delimiting a chamber (6) accommodating a device (7) for distribution of the refrigerant fluid (FR) inside the chamber (6), the distribution device (7) comprising at least one conduit (8a, 8b) extending between two ends (20a, 20b; 29a, 29b) along a longitudinal axis (A1), at least a first end (20a) of the conduit (8a) being provided with an inlet opening (10) for the admission of the refrigerant fluid (FR) to the interior of the distribution device (7), the distribution device (7) being provided with at least one orifice (11) oriented transversely to the longitudinal axis (A1) for the evacuation of the refrigerant fluid (FR) from the distribution device (7) to the chamber (6), characterized in that it comprises at least one member (17a, 17b) for retaining the distribution device (7) inside the chamber (6) at least in part made in one piece with the wall (4a-4d) of the header (4).

A heat exchanger includes a header and a side plate. The header has a face plate that defines a plurality of orifices. The header has a protrusion that extends outward from the header and down such that a gap is formed between the header and the protrusion. An external portion of the protrusion is configured to break away from the header during thermal expansion. The side plate is disposed adjacent to an array of alternating tubes and fins. Each tube extends into one of the orifices of the plurality of orifices. The side plate has an end that is secured to the external portion of the protrusion.

A cooker with a gasket may include a top plate on which a plurality of burners may be placed; a manifold panel provided in front of the top plate and including thereon a plurality of knobs to control output powers of the plurality of burners; and a gasket that extends along a front end of the top plate and is compressed between the top plate and the manifold panel to hermetically seal the top plate and the manifold panel.