A falling film evaporator (12) includes an evaporator vessel (26), a plurality of evaporator tubes (38) disposed in the in evaporator vessel (26) through which a volume of thermal energy transfer medium is flowed and a suction port (42) extending through the evaporator vessel (26) to remove vapor refrigerant from the evaporator vessel (26). A refrigerant distribution system (34) is located in the evaporator vessel (26) to distribute a flow of liquid refrigerant over the plurality of evaporator tubes (38). The refrigerant distribution system (34) is configured such that the refrigerant distribution system (34) has a first height at the suction port (42) and a second height greater than the first height at a longitudinal location (28) other than at the suction port (42).

Disclosed a heat exchanger comprising: a plurality of parallel tubes for conveying a first fluid, a pair of header plates, each having a plurality of openings into which respective ends of the tubes are inserted in a fluid-tight manner, a jacket connected to the header plates in a fluid-tight manner and defining with the header plates an inner volume for receiving a second fluid, the tubes being placed within the inner volume, and a fluid channel joined to a wall of the jacket, the fluid channel being in fluid communication with the inner volume through an opening formed through the wall, wherein the wall is, on an opposite side relative to the fluid channel, joined to sidewalls of said tubes.

A cooling device includes a number of cooling tubes arranged in parallel such that a first cooling fluid and a second cooling fluid can flow in the cooling tubes. A tank communicates with the cooling tubes to allow the first cooling fluid or the second cooling fluid to flow through the cooling tubes. A diaphragm is located inside the tank to separate the tank into a first space allowing the first cooling fluid to flow therein and a second space allowing the second cooling fluid to flow therein. The diaphragm is coupled to the tank to be rectilinearly movable in a direction of an arrangement of the plurality of cooling tubes.

A tube type heat exchanger includes a core includes multiple tubes, a header plate defining an array of apertures in which said tubes are received, and a coolant jacket arranged about said core. The header plate includes a body defining a central region and an edge region circumferential to said central region. The central region defines said array of apertures. The edge region includes a flange. The header plate is connected to the coolant jacket via first and second contact areas between the header plate and the coolant jacket. The flange is outboard of the coolant jacket. The first contact area is between the flange and the coolant jacket; and the second contact area is inboard of the first contact area.

A hierarchical heat exchanger manifold includes: first and second fluid passages respectively open to an inlet and an outlet in a first level of the heat exchanger manifold; a plurality of first and second fluid passages in a second level of the heat exchanger manifold; and a plurality of first and second fluid passages in a third level of the heat exchanger manifold. A number of the first fluid passages in the third level is greater than a number of the first fluid passages in the second level. Each of the first fluid passages in the second level is in fluid communication with the inlet and at least one of the first fluid passages in the third level, and each of the second fluid passages in the second level is in fluid communication with the outlet and at least one of the second fluid passages in the third level.

A cooling device for providing cooling capability of adjacent structures comprises a hollow chamber, an inlet and a chamber outlet, wherein the inlet, the chamber and the chamber outlet are configured such that fluid flow may enter via the inlet, pass through the chamber, and exit via the chamber outlet. The chamber is divided into a distribution chamber and a cooling chamber by a partitioning member, wherein the inlet is fluidly connected to the distribution chamber and the chamber outlet is fluidly connected to the cooling chamber. The partitioning member comprises at least a first and a second constriction passage, wherein the first constriction passage has a first predefined cross sectional flow area and the second constriction passage has a second predefined cross sectional flow area. The sizes of the predefined at least first and second cross sectional flow areas of the at least first and second constriction passages are controllable, whereby the distribution of fluid flow from the distribution chamber to the cooling chamber via the respective constriction passage is controllable.

An environmental control system according to an example of the present disclosure includes a heat exchanger, a ram air duct operable to provide cooling ram air to the heat exchanger, and a water extractor operable to extract water from a bleed air stream. The heat exchanger includes at least one nozzle operable to spray water from the water extractor into the ram air duct. An example heat exchanger and a method of making a heat exchanger are also disclosed.

A heat exchanger manifold configured to receive or discharge a first fluid includes a primary fluid channel and a plurality of secondary fluid channels. The primary fluid channel includes a fluid port and a first branched region distal to the fluid port. The plurality of secondary fluid channels are fluidly connected to the primary fluid channel at the first branched region. Each of the plurality of secondary fluid channels includes a first end and a second end opposite the first end. Each of the plurality of secondary fluid channels extends radially from the first branched region at the first end and has an equal length from a center of the first branched region to the second end.

A header duct and method of forming a header duct includes an inlet portion having a planar inlet, an outlet portion have a plurality of planar outlets, and a transition portion extending continuously from the inlet portion to the outlet portion. The transition portion has a bend and internal topography defining a non-monotonic cross-sectional area distribution between the inlet and outlet portions. The transition portion can further include a bulbous region extending in a lateral direction of the duct and a protrusion located along an inside radius of the bend.

An air conditioner includes a header for introducing refrigerant into a plurality of refrigerant tubes provided in parallel in a vertical direction. The header includes a main header chamber extending in the vertical direction and a plurality of sub header chambers branched in the horizontal direction from the main header chamber and provided in parallel in the vertical direction. The main header chamber includes a refrigerant inlet port configured to introduce the refrigerant in a gas-liquid mixing state in a horizontal direction into an inside of the main header chamber; and a flow direction changing mechanism provided to collide with the refrigerant ejected from the refrigerant inlet port, and configured to change a flow direction of the refrigerant from the horizontal direction to the vertical direction.