Cooling system using vacuum cooling and method for operating the same, said system having a refrigerant circulation, the refrigerant circulation comprising: a vacuum chamber, a vacuum pump, a first flow of a heat exchanger of the cooling system having at least two flows, and a condensate reservoir, wherein the vacuum chamber, the vacuum pump, the first flow and the condensate reservoir are connected, wherein a refrigerant contained within the refrigerant circulation is liquid at 20 C and 101325 Pa, wherein the system further comprises a separator having an inlet connected to the condensate reservoir for receiving a gaseous phase from the condensate reservoir, an outlet connected to an inlet of the vacuum pump and an exhaust for leakage air.

Refrigeration systems with a purge for removing non-condensables from the refrigerant and an acid filter for remove acid from the refrigerant are provided. The acid filter can be operatively connected to the purge. Optionally, the purge can include a separating device for separating non-condensable gases from condensable refrigerant gases and an acid filter is provided to remove acid from the condensable refrigerant gases.

An absorption refrigeration and air conditioning device capable of controlling temperature and/or the humidity of enclosed spaces particularly useful in maritime applications and improving fuel economy of internal combustion engines is provided.

A gas recovery system for a compressor, said gas recovery system being equipped with: a distillation column that brings a supply gas in a liquid state into contact with a mixed gas, thereby cooling and liquefying a process gas in the mixed gas, and heating and gasifying the liquid supply gas; a process gas recovery line that is connected to the lower part of the distillation column and recovers the liquid process gas discharged from the distillation column; and a supply gas recovery line that is connected to the upper part of the distillation column and recovers the gaseous supply gas discharged from the distillation column.

A heat pump includes a condenser for condensing compressed working vapor; a foreign gas collection space arranged within the condenser, the foreign gas collection space comprising: a condensation surface which during operation of the heat pump is colder than a temperature of the working vapor to be condensed; and a partition wall arranged, within the condenser, between the condensation surface and a condensation zone; and a foreign gas discharge device coupled to the foreign gas collection space so as to discharge foreign gas from the foreign gas collection space.

A separator for removing contamination from a fluid of a heat pump includes a housing having a hollow interior, a separation component mounted within the hollow interior, and at least one turbulence-generating element positioned within the hollow interior adjacent the separation component.

The separation efficiency for bubbles contained in liquid is improved. A bubble separator 20 that separates bubbles in liquid is provided. The bubble separator 20 comprises: a swirl flow formation part 22 extending in a nearly horizontal direction, and including an internal space having a columnar shape; an flow inlet 24 disposed at one end of the swirl flow formation part 22, and being open so as to cause the liquid to flow in the flow inlet 24 in a tangential direction of an inner peripheral surface of the swirl flow formation part 22 and so as to form a swirl flow on the inner peripheral surface; an flow outlet 26 disposed at another end of the swirl flow formation part 22, and being open so as to cause the liquid to flow out of the flow outlet 26 in a tangential direction from the inner peripheral surface; gas discharge ports 30, 32 to discharge gas separated from the liquid in the swirl flow formation part 22, outside of the swirl flow formation part; and a single or a plurality of liquid drop nozzles 50a to 50c provided on a wall surface of the swirl flow formation part 22. A fluid circuit for an automobile that includes the bubble separator 20 is also provided.

An apparatus (1) for removing non-condensable gases from a refrigerant is described, said apparatus (1) comprising a pipe arrangement (2) having a pipe (3), cooling means (4) for the pipe (3), and venting means, wherein the pipe (3) comprises a connection geometry (5) for a connection to a refrigerant system. Such an apparatus should be operated with good efficiency. To this end the pipe comprises at least a first section (6) and a second section (7) which are directed in different directions.

The present invention relates to an air-vapor separation device for separating air from refrigerant vapor comprising an air-vapor separation tank, a separation membrane, a mixed gas input passage, a refrigerant vapor output passage, and a control unit, wherein the mixed gas input passage is provided with a compressor and a first control valve, and the refrigerant vapor output passage is provided with a second control valve. The air-vapor separation device of the present invention has the advantages of simple structure, convenient operation, and is reliable and effective in separation of air and refrigerant vapor, with good separation effect.

The present invention relates to an air-vapor separation device for separating air from refrigerant vapor comprising an air-vapor separation tank, a separation membrane, a mixed gas input passage, a refrigerant vapor output passage, and a control unit, wherein the mixed gas input passage is provided with a compressor and a first control valve, and the refrigerant vapor output passage is provided with a second control valve. The air-vapor separation device of the present invention has the advantages of simple structure, convenient operation, and is reliable and effective in separation of air and refrigerant vapor, with good separation effect.