A condensing device includes two end caps each having two openings, a barrel connected to and disposed between the end caps, a heat exchanger disposed in the barrel, and a condensing unit mounted to one end cap. The heat exchanger includes a passage and a vortex chamber each cooperating with a respective one of the openings of each of the end caps to define a flow channel to permit fluid to flow therethrough. A cooling chip module of the condensing unit includes a heat absorbing plate disposed at an end proximate to the one end cap, and a heat dissipating plate disposed at an opposite end.

A condenser module of a heating, ventilation, and/or air conditioning (HVAC) system includes a first slab having a first plurality of tubes configured to receive a refrigerant from a compressor of the HVAC system. The first plurality of tubes is arrayed along a first dimension of the first slab. The condenser module also includes a second slab that has a second plurality of tubes configured to receive the refrigerant from the compressor. The second plurality of tubes is arrayed along a second dimension of the second slab, the second slab is oriented at an acute angle relative to the first slab, and the second dimension is greater than the first dimension.

Disclosed is a low-temperature refrigeration device comprising a working circuit that forms a loop and contains a working fluid the working circuit forming a cycle which includes, connected in series: a compression mechanism, a cooling mechanism, an expansion mechanism and a heating mechanism, the device further comprising a refrigeration heat exchanger for extracting heat from at least one member by exchanging heat with the working fluid flowing in the working circuit, the compression mechanism comprising two separate compressors, the mechanism for cooling the working fluid comprising two cooling heat exchangers which are arranged respectively at the outlet of the two compressors and ensure heat exchange between the working fluid and a cooling fluid, each cooling heat exchanger comprising a cooling fluid inlet and a cooling fluid outlet, characterized in that the cooling fluid outlet of one of the two cooling heat exchangers is connected to the cooling fluid inlet of the other cooling heat exchanger.

Described are a high pressure carbamate condenser, urea plant, and urea production process. The high pressure carbamate condenser as described is of the shell-and-tube heat exchanger type with a tube bundle and has a redistribution chamber connected to tubes of the tube bundle and to a duct. The duct extends between the redistribution chamber and the shell.

A heat exchanger assembly includes: a frame; a heat exchanger panel mounted to the frame and configured to exchange heat with air flowing therethrough, the heat exchanger panel being disposed at an inclined orientation; a fan assembly disposed vertically above the heat exchanger panel; and a sound dampening device disposed within an interior space of the heat exchanger assembly such that air is pulled into the interior space through the heat exchanger panel and then flows through the sound dampening device before being discharged from the heat exchanger assembly via the fan assembly. The sound dampening device includes baffle members having sound absorbing material and spaced apart from one another for allowing air flow therebetween. Each baffle member extends at an angle relative to a plane extending through the upper and lower ends of the heat exchanger panel so as to direct air flow upwardly toward the fan assembly.

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.

A heat exchanger assembly includes a heat exchanger panel disposed at an inclined orientation. A fan assembly is disposed vertically above the heat exchanger panel and includes a fan impeller connected to a fan mount. The fan impeller is sized and positioned such that part of the fan impeller rotates vertically above the upper end of the heat exchanger panel. A casing has a plurality of inner walls for guiding air from the heat exchanger panel toward the fan assembly. The inner walls include a sloped wall. A distance between an upper end of the sloped wall and a fan rotation axis is greater than a distance between a lower end of the sloped wall and the fan rotation axis. The sloped wall is adjacent to the upper end of the heat exchanger panel such that the part of the fan impeller rotates vertically above the sloped wall.

A passive containment cooling system (PCCS) condenser, for reducing some non-condensable gases in the PCCS, includes a first and a second stage condenser that each include channels in fluid communication between an inlet and an outlet header. The inlet header of the first stage condenser is configured to receive a fluid mixture through a first inlet opening. The channels are configured to condense water from the fluid mixture flowing through the channels from the inlet header to the outlet header, respectively, of the first and second stage condenser. The PCCS condenser includes a catalyst in at least one of the outlet header of the first stage condenser or the inlet header of the second stage condenser. The catalyst catalyzes a reaction for forming water from hydrogen and oxygen in the fluid mixture. The outlet header of the second stage condenser is in fluid communication with a combined vent-and-drain line.

A heat exchanger can be configured to utilize multiple sections of hardway fins that can be configured so that an upper first section of the fins can build up liquid head and a second lower section of the fins can be configured to distribute liquid in an even, or uniform, manner. The first section of fins can utilize a different type of hole arrangement than the second section of fins. For instance, the diameter or width of the holes in the first section may differ from the diameter or width of the holes of the second section. In addition (or as an alternative), fin frequency and/or spacing between immediately adjacent holes in the first section of fins may be different from the spacing between immediately adjacent holes in the second section of fins.

A membrane heat exchanger comprising a first planar sheet a second planar sheet coupled to the first planar sheet at least by a seam and at least one fluid chamber defined by the first and second planer sheet and the seam and comprising a first and second end, the fluidic chamber extending a length of the membrane heat exchanger.