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WO/2006/099378A1 |
An HVAC system having a main circuit (100) and a subcooler circuit (210). The main circuit includes a main circuit evaporator (140), a main circuit expansion device (126), a main circuit condenser (118, 120) and a main circuit compressor...
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WO/2006/094969A1 |
The present invention relates to a method for the liquefaction of a hydrocarbon-rich stream, preferably a natural gas containing stream, by heat exchanging against a refrigerant (1a-d) . The liquid refrigerant (19) is evaporated using he...
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WO/2006/027330A1 |
Refrigerant apparatus is described comprising a first circuit (10) for a first refrigerant fluid and a second circuit (100) for carbon dioxide. The first circuit comprises a single stage compressor (20), a cooler (30) for the extraction ...
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WO/2006/028799A2 |
A heat pump four-way valve selectively routes refrigerant to either indoor or outdoor heat exchanger. The position of the plunger inside the valve can also be adjusted to selectively provide a hot gas by-pass function by routing a portio...
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WO/2006/019074A1 |
A heat exchanger (45) for air conditioning, in which indoor cooling and heating are switched between each other, is provided only in a high-stage-side refrigerant circuit (8). On the other hand, heat exchangers (47a, 47b, 49) for cooling...
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WO/2005/089345A2 |
An apparatus for refrigeration system control includes a plurality of circuits, each circuit having at least one refrigeration case and an electronic evaporator pressure regulator in communication with each circuit. Each electronic evapo...
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WO/2005/072404A2 |
The disclosure is directed to a cooling system that includes a first refrigerant cycle and a second refrigerant cycle. The first refrigerant cycle has a first refrigerant and the second refrigerant cycle has a second refrigerant comprisi...
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WO/2005/060430A2 |
A system including (i) a primary loop including a first oil compressor configured to raise the pressure of a refrigerant flowing through the primary loop, an oil separator configured to separate oil contaminant from the refrigerant, a va...
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WO/2005/052467A1 |
It has been usual for a freezer having refrigerant cooling means for cooling a refrigerant at the entrance of a flow rate control valve that a performance coefficient lowers when the amount of cooling provided by the refrigerant cooling ...
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WO/2005/050109A1 |
A gas liquefying plant, comprising a pre-cooling heat exchanger preliminarily cooling a supply gas by the indirect heat exchange thereof with a first refrigerant, a first refrigerant compressor compressing and cooling the first refrigera...
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WO/2004/059226A1 |
Methods and apparatus for a two chamber freezer whereby both chambers (22, 24) can be maintained at a substantially constant ultra-low temperature, such as within the range of about -40° C to -80° C. Short term items may be stored in a...
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WO/2004/008044A1 |
A method for providing refrigeration wherein a first multicomponent refrigerant is condensed (41) to form a saturated liquid and vaporized (42) against a condensing (43) second multicomponent refrigerant which has a dew point less than t...
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WO/2003/083382A1 |
A cascade refrigeration system wherein the inlet and outlet pressures and the power consumption of the compressor (10) of the higher temperature refrigeration circuit, and the inlet and outlet pressures and the power consumption of the c...
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WO/2003/014637A2 |
Compressors (1) supply a primary air-cooled condenser (4) which is followed by an indirect heat exchanger (6), a liquid receiver (8) and a second indirect heat exchanger (10) acting as a refrigerant sub-cooler. A pump (12) supplies sub-c...
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WO/2002/101305A1 |
In cascade refrigeration systems using CO¿2? as effective refrigerant in a highly advantageous manner there are severe problems with respect to defrosting in freezer equipments calling for operative defrosting, e.g. in plate freezer uni...
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WO/2002/095308A2 |
Disclosed is an ultra-low temperature, dual-compressor (114,144), recirculating gas chilling system that includes a closed-loop mixed-refrigerant primary refrigeration system (110) in combination with a closed-loop gas secondary refriger...
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WO/2002/066908A1 |
A refrigeration system is disclosed in which CO¿2? is used as refrigerant and as working medium during defrost. The refrigeration system comprises a distribution system (40) for refrigerants and a refrigeration equipment (44) on a con...
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WO/2002/029337A1 |
The present invention provides a cryogenic refrigerating system for achieving ultra low temperature by sequentially obtaining low temperature through repetition of expansion and evaporation of a mixed-refrigerant in multiple stages. The ...
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WO/2002/024316A1 |
The present invention relates to a cooling device (30) of the reverse Carnot cycle-type using a refrigerant, and an areosol generation system including it. The cooling device (30) includes a refrigerator (310, 320) of the reverse Carnot ...
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WO/2001/075380A1 |
A cascade refrigeration system (10) is provided. The cascade refrigeration system includes a low stage (12) having a first refrigerant flowing therethrough and a high stage (14) having a second refrigerant flowing therethrough. The low s...
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WO/2001/070123A1 |
One aspect of the invention provides a refrigeration system (1; 50) comprising a cooling instrument (25) and a refrigerant circuit (3, 5; 52, 54) comprising means (9, 15; 58, 66) for puming refrigerant through the circuit and the instrum...
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WO/2001/035036A1 |
An assembly (30) for cooling a gas using an evaporating first refrigerant, such as a film-evaporating refrigerant, which is brought into contact with the gas to be cooled. The assembly (30) comprises a gas cooler (19) of the gap type hav...
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WO/2000/049343A1 |
An operation control method for an air conditioning system for preventing the concurrent restarting of a plurality of air conditioning systems that may cause the re-stopping of the systems due to a drop in voltage at the time of an autom...
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WO/2000/039509A1 |
A refrigerating plant, wherein a second refrigerant heat exchanger (5B) is connected to a liquid pipe (36a) and a suction side gas pipe (36b) of a second refrigerating circuit (2) through communication pipes (41, 42), respectively, using...
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WO/2000/039510A1 |
A refrigerating device which comprises a first refrigerating circuit (1) for a refrigerating system (6A) constructed for operation on a two-stage refrigerant cycle by connecting a high temperature refrigerant circuit (3) and a low temper...
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WO/2000/029797A1 |
Plant for liquefying natural gas comprising one pre-cooling heat exchanger (2) having an inlet (13) for natural gas and an outlet (14) for cooled natural gas, a pre-cooling refrigerant circuit (3), one distributor (4) having an inlet (18...
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WO/2000/025061A1 |
A process is disclosed for reliquefying boil-off gas produced by pressurized liquid natural gas. In this process, refrigeration duty is provided to a heat exchanger (51) by means of a refrigeration cycle (50). Pressurized natural gas (10...
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WO/2000/019155A1 |
A refrigerator, comprising a low stage side refrigerant circuit (2) formed by connecting in order a low stage side compressor (4), a cascade condenser (5), a low stage side receiver (6), a low stage side expansion valve (7) formed of a t...
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WO/2000/019157A1 |
A high-temperature refrigerating circuit (20) and a first low-temperature refrigerating circuit have their refrigerant circulation direction made reversible. The receiver (25) of the high-temperature refrigerating circuit (20) comprises ...
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WO/2000/016024A1 |
Method for operating a refrigerating system. An electromotor-driven or mechanically driven compression refrigerating system (1, 2, 3, 4) is thermally coupled to a thermally fed refrigerating system (5, 6, 7), whereby the liquefier (3) of...
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WO/2000/005542A1 |
A refrigerating device, comprising a heat source side refrigerant circuit (70) having a plurality of refrigerant heat exchangers (50, 60) and a plurality of user side refrigerant circuits (11, 21), wherein a high-pressure gas pipe (LG-H)...
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WO/1999/058905A1 |
The invention relates to a method for producing cold in the temperature range between 65 and 150 degrees Kelvin. The invention also relates to a device which comprises an oil-lubricated compressor (1) for compressing a coolant, a seconda...
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WO/1999/057494A1 |
A miniature refrigeration system and method of operation. A primary refrigerant is pressurized by a compressor (130) to a relatively low pressure, for safety reasons. The compressed primary refrigerant is passed through a primary-to-seco...
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WO/1999/022187A1 |
This invention relates to a phase-changeable and non-heat refrigeration process and apparatus thereof. The apparatus is composed of multi-stages refrigeration cycle. The first stage compresses vapour, the other stages liquify the vapour ...
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WO/1999/022185A1 |
This invention relates to a non-heat refrigeration method and a cycle system thereof, the system composes a first stage, one or more median stage(s) and a last stage. The first stage is known refrigerative technique, the other stages con...
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WO/1999/002929A1 |
A compound refrigeration system (10) is provided for use with a thermal storage system (70). A water chiller (20) and a brine chiller (30) are provided, with a primary compressor (42) pulling refrigerant through the water chiller (20) an...
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WO/1998/055809A1 |
A refrigerating PLANT comprising one outdoor unit (1), one master machine (2), and a plurality of refrigerating slave machines and cold storage slave machines, wherein: the cold storage slave machines are provided in a refrigerated showc...
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WO/1998/049506A1 |
A low temperature storage cabinet whose freezing compartment maintained at an ultra-low temperature by a binary refrigerating apparatus is improved in thermal insulation effect. A vertical ultra-low temperature freezer (1) is constituted...
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WO/1998/045651A1 |
A refrigerating/air-conditioning system for use in supermarkets, having an outdoor unit (60) and a plurality of use-side units (11 to 51) which are parallel to each other and connected to the outdoor unit (60). Each of the use-side units...
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WO/1998/030847A1 |
A refrigeration system having a closed circulating circuit filled with a refrigerant which on evaporation expands and gives rise to an increase in pressure in the whole of or parts of the circulating circuit, and which at ambient tempera...
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WO/1998/029699A1 |
Other parts than an indoor unit (B) and an existing piping (21b) are removed from an existing refrigeration apparatus which uses R22 while the indoor unit (B) and the existing piping (21b) are left. A refrigerant-refrigerant heat exchang...
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WO/1998/017167A2 |
A miniature mixed gas refrigeration system and method is disclosed. A selected gas mixture is compressed to less than 420 psia for safety reasons. The compressed gas mixture is passed through a primary heat exchanger (140) and a primary/...
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WO/1998/006985A1 |
A miniatured mixed gas refrigeration system and method of operation are disclosed, having a coaxial catheter (18) with an inner high pressure supply lumen and an outer low pressure return lumen. An optimum gas mixture is formulated from ...
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WO/1997/039293A1 |
A precooled vapor-liquid refrigeration cycle includes a basic vapor-liquid cycle (24) and an auxiliary regenerative vapor-liquid cycle (26) having a heat exchange relationship (18') between them. The basic cycle (24) includes a compresso...
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WO/1997/026491A1 |
A process comprised of an initiating cycle (3-4-2), which is a reversed Carnot refrigeration cycle (or a cycle that has the potential of reversed Carnot refrigeration) and a reclaiming cycle (5-7-4), which is a cycle containing refrigera...
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WO/1996/021831A1 |
A condenser (4) of a low temperature side unit (1) and an evaporator (14) of a high temperature side unit (2) communicate via heating medium circulation passages (16, 17, 16a, 17a) through which a heating medium circulates. A refrigerant...
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WO/1996/021830A1 |
A high temperature side unit (2) equipped with a high temperature side compressor (15) and a condenser (16) for constituting a high temperature side refrigeration cycle is disposed at a higher poisition than a low temperature side unit (...
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WO/1994/021919A1 |
A refrigeration, air-conditioning, or like system including a compressor (1, 15) having an inlet (29) and an outlet (28), the inlet (29) and the outlet (28) having an operative connection (27) with a valve (30) therein; the valve (30) be...
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WO/1993/021280A1 |
A refrigerant composition comprising an azeotropic mixture of trifluoromethane with hexafluoroethane which can offer a low temperature of -80 °C without using a restricted refrigerant which is likely to deplete the ozone layer, and whic...
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WO/1993/018357A1 |
An improved subcooling system for nonazeotropic working fluid leaving a condenser in a multi-compartment system passes the fluid leaving the condenser in heat exchange relationship with fluid evaporating within the evaporator (102). The ...
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