A tube heat exchanger extending in a vertical direction, comprising: a first chamber including a lower portion provided with at least one intake inlet for a diphasic fluid including a liquid and a first vapor containing a mist; an upper portion; and a first recovery member passed through by the first vapor and recovering the mist in liquid form, the first vapor next arriving in the upper portion, a central chamber forming liquid films running over the tubes and vaporizing at least partially to produce a second vapor, the tubes being traveled inwardly by a fluid hotter than the diphasic fluid, and a second chamber receiving the first vapor and the second vapor to form a third vapor, and including an outlet for the non-vaporized liquid and an outlet for the third vapor, the first chamber and the second chamber together forming a volume surrounding the central chamber around the vertical direction.

An integrated cryogenic fluid delivery system includes a tank adapted to hold a supply of cryogenic liquid and having an end wall. A shroud is positioned on the end wall and contains a shell and tube heat exchanger. The heat exchanger includes a shell defining a warming fluid chamber and having a shell inlet and a shell outlet in fluid communication with the warming fluid chamber. A number of cryogenic fluid coils are positioned within the warming fluid chamber and are in fluid communication with a cryogenic fluid inlet port and a cryogenic fluid outlet port. A fuel shutoff valve has an inlet in fluid communication with a liquid side of the tank and an outlet in fluid communication with the cryogenic fluid inlet port of the heat exchanger. A manual vent valve has an inlet in fluid communication with a headspace of the tank and an outlet. The fuel shutoff valve and the manual vent valve each have a control knob that is accessible from the first or second side of the shroud.

The invention relates to an evaporator (V) comprising an evaporator body (3) surrounded by an evaporator housing (5) having an inlet (1) for supply of liquid into the evaporator housing (5) and an outlet (6) for discharge of vapour generated, wherein the evaporator body (3) comprises a multitude of plates (7) arranged flat one on top of another, wherein there is a liquid distributor (2) for distributing the liquid between the multitude of plates (7) arranged between the inlet (1) and the evaporator body (3), wherein each of the plates (7) comprises, on a first surface, a liquid distributor structure (10) with distributor conduits (20, 21, 22), an evaporator area (11) and a gas collection structure (12). The invention further relates to a corresponding fuel cell arrangement.

A metal heat exchanger tube has integral ribs formed on the outside of the tube. The ribs have a rib base, rib flanks, and a rib tip. The rib base protrudes substantially radially from the tube wall. A channel is formed between the ribs, in which channel additional structures spaced apart from each other are arranged. The additional structures divide the channel between the ribs into segments. The additional structures reduce the cross-sectional area in the channel between two ribs through which flow is possible by at least 60% locally and, at least thereby, limit a fluid flow in the channel during operation.

A method and apparatus for pool boiling includes introducing a fluid into a chamber of a housing which has one or more protruding features. One or more diverters extend at least partially across the one or more protruding features in the chamber. One or more bubbles are formed in the fluid in the chamber as a result of bubble nucleation. At least one of growth and motion of the one or more of the bubbles are diverted with the one or more diverters to generate additional localized motion of the fluid along at least one of the one or more protruding features and other surfaces in the chamber of the housing to at least of transfer additional heat to the liquid and increase the critical heal flux limit.

An orifice insert is provided and includes a center plug and a ring feature. The center plug has first and second ends and an exterior surface extending between the first and second ends. The exterior surface defines multiple inflow channels that extend from the first end toward the second end and terminate at termination points midway between the first and second ends. The ring feature is disposed about the center plug and the multiple inflow channels to define, with the center plug, a plenum with which the termination points of the multiple inflow channels are fluidly communicative.

An evaporator element is provided and includes a body defining channels, each of which includes grooves respectively delimited by first and second interior facing sidewalls of the body which form a base and an apex with an apex angle opposite the base and defined such that, for a fluid flow moving through one of the channels in a microgravity environment a portion of the fluid flow in a liquid phase within a groove of the channel will move in the groove from the base to the apex and a portion of the fluid flow in a vapor phase within a groove of the channel will move in the groove from the apex to the base.

Disclosed is an evaporator header insert, including: a header insert body that extends along a body center axis between body inlet and outlet ends, a center passage located within the header insert body, the center passage extending from the body inlet end to the body outlet end along the body center axis, the center passage surface defining: a center passage inlet portion at the body inlet end; a center passage outlet portion, at the body outlet end, that defines a body nozzle portion on the body center axis, wherein the body nozzle portion has a convergent-divergent shape so that the body nozzle portion has a convergent segment, a divergent segment and a neck segment therebetween; and a conical tip member, fixed to the body outlet end and disposed at least partially within the divergent segment of the body nozzle portion so that a conical outlet passage is formed therebetween.

A current stabilization and pressure boosting device for evaporator is disclosed, comprising a heat-sinking module and an outer case, wherein the heat-sinking module is assembled by successively stacking a large number of heat-sinking components, with each of the heat-sinking components having a first board surface, a second board surface and a third board surface, so that the insides of such heat-sinking components form a semi-open inner flow channel, and a fourth board surface is further respectively provided at the two ends of the heat-sinking components opposite to the inner flow channel, and the heat-sinking module is respectively configured with a water injection channel and an air exhausting channel, and the heat-sinking module is installed inside the outer case and the outer lid.

A projector includes first and second cooling targets and a cooling device. The cooling device includes a first compressor, a condenser, a first expander, a first evaporator configured to change the working fluid into a working fluid in a gas phase by using heat of the first cooling target, a heat exchanger including a first flow path through which the working fluid from the first expander flows and a second flow path, a second expander configured to decompress the working fluid from the first flow path, a second evaporator configured to change the working fluid flowing into the second flow path into the working fluid in a gas phase by using heat of the second cooling target, and a second compressor. The heat exchanger cools the working fluid flowing through the first flow path by the working fluid flowing through the second flow path.