A water chamber structure for a condenser, including an orifice plate arranged at one end of the condenser; a water cover fixed to the orifice plate in a sealed manner to form a water storage space; and a partition plate assembly for dividing the water storage space into a water inlet chamber and a water outlet chamber in a sealed manner, including: a first partition plate, the top and side walls of the first partition plate are fixed to the inner walls of the water cover; and a second partition plate, the top of the second partition plate is fixedly connected with the bottom of the first partition plate, the bottom of the second partition plate is fixed to the orifice plate, and the side walls of the second partition plate are connected with the inner walls of the water cover in a sealed manner.

Embodiments of the present disclosure relate to a vapor compression system that includes a refrigerant loop, a compressor disposed along the refrigerant loop and configured to circulate refrigerant through the refrigerant loop, and a heat exchanger disposed along the refrigerant loop and configured to place the refrigerant in a heat exchange relationship with a cooling fluid. The heat exchanger includes a water box portion having a first length, a shell having a second length, a plurality of tubes disposed in the shell and configured to flow the cooling fluid, and a cooling fluid portion having a third length, where the water box portion and the cooling fluid portion are coupled to the shell, such that the first length, the second length, and the third length form a combined length of the heat exchanger that is substantially equal to a target length.

An apparatus includes a flash tank, a load, a first compressor, a coil, a first pipe, and a second compressor. The flash tank stores a refrigerant. The load uses the refrigerant from the flash tank to cool a space proximate the load. The first compressor compresses the refrigerant from the load. The coil within the flash tank receives the refrigerant from the first compressor such that the received refrigerant is within the coil. The refrigerant stored within the flash tank cools the refrigerant within the coil. The first pipe is within the flash tank. The first pipe directs the refrigerant from within the coil out of the flash tank. The second compressor compresses the refrigerant directed out of the flash tank.

In certain embodiments, a condenser includes a shell having a longitudinal axis, a first tube bundle disposed within the shell, and a subcooler component disposed within the shell beneath the first tube bundle. The subcooler component includes a rectilinear housing, a plurality of rectilinear grid support assemblies disposed within the rectilinear housing and spaced lengthwise along the axis of the shell, and a second tube bundle disposed within the rectilinear housing, wherein tubes of the second tube bundle are held in place within rectilinear grid channels of the rectilinear grid support assemblies.

A multi-step method is disclosed for exchanging heat in a vapor compression heat transfer system having a working fluid circulating therethrough. The method includes the step of circulating a working fluid comprising a fluoroolefin to an inlet of a first tube of an internal heat exchanger, through the internal heat exchanger and to an outlet thereof. Also disclosed are vapor compression heat transfer systems for exchanging heat. The systems include an evaporator, a compressor, a dual-row condenser and an intermediate heat exchanger having a first tube and a second tube. A disclosed system involves a dual-row condenser connected to the first and second intermediate heat exchanger tubes. Another disclosed system involves a dual-row evaporator connected to the first and second intermediate heat exchanger tubes.

A device for refrigerating and/or liquefying a working gas comprising helium, the device comprising a looped working circuit for the working gas includes, in series, a compression station, a cold box, a heat exchange system exchanging heat between the cooled working gas and a user, the device further comprising an additional pre-cooling system comprising at least one tank of auxiliary cryogenic fluid, such as liquid nitrogen, the cold box comprising a first cooling stage of the working gas comprising a first exchanger disposed at the output of the compression station as well as a second heat exchanger and a third heat exchanger, the first heat exchanger being of the aluminum plate-fin type, the second heat exchanger being of the tube or welded plate type, characterized in that the second and third heat exchangers are connected both serially and in parallel on the working circuit downstream of the first heat exchanger.

A liquid absorption refrigeration system and a tube and channel heat exchanger include: an absorber section to contain a saturated strong solution; a pump connected to an outlet of the absorber section to receive saturated strong solution therefrom; a regenerator section connected to an outlet of the pump to receive a flow of pressurized saturated strong solution therefrom; an expansion device connected to an outlet of the regenerator section to receive a flow of subcooled strong solution therefrom; an evaporator section connected to an outlet of the expansion device to receive the subcooled strong solution therefrom, the evaporator section connected to the absorber section to return strong solution thereto; and a condenser section connected to the evaporator section to receive a refrigerant evaporated from the subcooled strong solution in the evaporator, the condenser section connected to the absorber section to return liquid refrigerant thereto.

Methods and systems to manage refrigerant levels in a chiller system are provided. An evaporator of the chiller system may be configured to have a spill over port allowing oil containing refrigerant to spill over through the spill over port. The spill over port may be positioned at a place that corresponds to a desired refrigerant level in the evaporator. The spill over refrigerant may be directed into a heat exchanger that is configured to substantially vaporize refrigerant of the spill over refrigerant to a slightly superheat temperature. A method of maintaining a proper refrigerant level in the evaporator may include regulating a refrigerant flow to the evaporator so that the vaporized refrigerant of the spill over refrigerant is maintained at the slightly superheat temperature.

This refrigerating machine is equipped with: a turbocompressor which compresses a refrigerant; a condenser which is equipped with one or more pipe groups configured from a plurality of heat transfer pipes through which cooling water flows, and condenses the refrigerant compressed by the turbocompressor; an expansion valve which causes the refrigerant condensed by the condenser to expand; an evaporator which causes the refrigerant expanded by the expansion valve to evaporate; a temperature sensor which detects cooling water exit temperature, which is the temperature of the cooling water flowing from at least one of the heat transfer pipes constituting the pipe group(s); and a control unit which determines, on the basis of the detection temperature of the temperature sensor, air bleeding start conditions for starting an air bleeding operation to bleed and discharge air to the outside.

A shell and plate heat exchanger includes a shell and a plate pack. The shell defines a cavity configured to receive a first fluid and a second fluid. The plate pack is arranged inside the cavity. The plate pack has a plurality of heat exchanger plates. Each of the heat exchanger plates has two sides facing in opposite directions in a thickness direction of the heat exchanger plate. At least one of the sides of at least one of the heat exchanger plates has a surface roughness of between 5 ?m and 100 ?m.