A refrigeration system includes a high-pressure main header gas line; a low-pressure condensate discharge gas line; a condenser having a first port in gaseous communication with the high-pressure main header gas line; a second port in gaseous communication with the low-pressure condensate discharge gas line; a purge assembly in gaseous communication with the low-pressure condensate discharge gas line, the purge assembly is configured to purge air from the gas channeled through the low-pressure condensate discharge gas line; and an adiabatic air cooling system disposed within the condenser having a plurality of jet nozzles configured to inject a cooling gas within the condenser.

A liquid chiller system utilizing a refrigerant capable of possessing a liquid state and a gas/vapor state, the refrigerant being cycled through a closed loop assembly of a compressor, a condenser, an evaporator, and an expansion valve external to the evaporator. The compressor may have a lower integrated reservoir and the evaporator may have an upper dedicated reservoir such that separate, dedicated separator or receiver vessels are not required. The condenser may be positioned above the eccentric evaporator such that liquid refrigerant flows by gravity from the condenser to the evaporator.

Provided is a refrigerant container having a rational structure with a small number of components, the container having both the functions of a receiver and an accumulator. Specifically, the refrigerant container includes a tank 10 capable of temporarily storing a refrigerant; and a gas/liquid inlet port 15, a liquid-phase outlet port 16, and a gas-phase outlet port 17 that are provided in a lower portion of the tank 10. The refrigerant container 1 is adapted to separate a refrigerant introduced through the gas/liquid inlet port 15 into a liquid-phase refrigerant and a gas-phase refrigerant, and has the function of a receiver that guides only the liquid-phase refrigerant after the separation to the side of an expansion valve via the liquid-phase outlet port 16, and the function of an accumulator that guides the gas-phase refrigerant after the separation to the suction side of a compressor via the gas-phase outlet port 17 together with oil contained in the liquid-phase refrigerant.

A method of manufacturing an air-conditioning apparatus serving as a refrigeration cycle apparatus includes: performing an operation test in a factory under a state in which inert gas (nitrogen) is sealed into respective devices mounted on an outdoor unit (such as a compressor and a four-way valve) and an outdoor pipe connecting the devices in place of refrigerant having flammability; and shipping the air-conditioning apparatus under the state in which the inert gas remains sealed.

An air conditioner which includes a compressor, an outdoor heat exchanger, an outdoor expansion valve, and an indoor heat exchanger that have been successively connected by a pipeline, and in which a hydrofluoroolefin-containing refrigerant is to be used, the air conditioner being characterized in that an oxygen adsorption device in which a synthetic zeolite is used as an adsorbent has been disposed somewhere in the pipeline, the synthetic zeolite having a pore diameter which is larger than the size of the oxygen molecule but smaller than the size of the hydrofluoroolefin molecule.

A purge system for removing non-condensables from a chiller system includes a purge chamber, a plurality of carbon beds fluidly connected to the purge chamber into which a flow of refrigerant and non-condensables is selectably directed from the purge chamber to remove the non-condensables therefrom. A vent line is fluidly connected to the plurality of carbon beds to dispose of the collected non-condensables, and a heater is operably connected to the plurality of carbon beds to selectably heat one or more of the carbon beds of the plurality of carbon beds to release refrigerant therefrom and direct the released refrigerant to the purge chamber.

A non-condensable gas purge system is configured to be used in a chiller system that uses a low pressure refrigerant in a loop refrigeration circuit. The non-condensable gas purge system includes a purge tank and a purge heat exchanger coil arranged inside the purge tank. The purge tank has a tank inlet for receiving the low pressure refrigerant from a condenser of the refrigeration circuit, a tank outlet for returning the low pressure refrigerant to an evaporator of the refrigeration circuit, and a purge outlet for purging non-condensable gas from the purge tank to the ambient atmosphere. The purge heat exchanger coil is fluidly connected to the loop refrigeration circuit such that the low pressure refrigerant contained in the loop of the chiller system can pass through the purge heat exchanger coil. Refrigerant in the purge tank is condensed by the heat exchanger coil while non-condensable gases remain gaseous.

The present invention provides a refrigerating system, including: a refrigerating loop (100), including a compressor (190), a condenser (110), a main throttling element (180), and an evaporator (120) that are connected in sequence through a pipeline; and a purification loop (200), including a purification compressor (210), a purification condenser (220), a purification throttling element (240), and a low-temperature separator (230) that are connected in sequence through a pipeline, the purification loop being bidirectionally connected to the refrigerating loop through the low temperature separator and configured to separate a non-condensable gas in the refrigerating loop; wherein the purification condenser is capable of exchanging heat with a refrigerant in the refrigerating loop. Thus, efficient and reliable separation of the refrigerant and the non-condensable gas is achieved.

The present invention maintains a compact evaporator size in a centrifugal chiller utilizing a low pressure refrigerant used at a maximum pressure of less than 0.2 MPaG while avoiding efficiency losses and equipment damage that result from carryover of liquid state refrigerant to the turbo compressor side. This evaporator is equipped with a pressure vessel into which a condensed refrigerant is introduced, a refrigerant inlet which is provided to the bottom portion of the pressure vessel, a refrigerant outlet which is provided to the top portion of the pressure vessel, a heat transfer pipe group which passes through the interior of the pressure vessel, circulates liquid to be chilled through the interior thereof, and exchanges heat between the liquid to be chilled and the refrigerant, and a demister which is disposed between the refrigerant outlet and the heat transfer pipe group in the interior of the pressure vessel and carries out vapor-liquid separation of the refrigerant, a dividing section (for example, a plurality of notches) being provided between the periphery of the demister and the inner peripheral surface of the pressure vessel. The dividing section is provided to a side of the demister along the lengthwise direction.

A sensor device, system, and method for monitoring the internal pressure and temperature of a refrigerant tank during a recovery operation to control a purge operation of the tank based on the conditions thereof during the recovery operation. The sensor device, system, and method further utilize an external temperature sensor, the external temperature sensor operable to indicate that it is properly positioned on the surface of the tank.