Abstract: A split air conditioning system for conditioning a plurality of zones within a single living area of a building, that includes a single outdoor unit; a refrigerant flow pathway made up of a plurality of refrigerant conduits having a common refrigerant flow path portion and at least two divergent flow path portions, a first divergent flow path and a second divergent flow path and the first evaporator and second evaporator are in parallel with one another; at least one throttling device; a portioning device configured to selectively and proportionately regulate the flow of a refrigerant fluid to the first evaporator and the second evaporator, respectively where the compressor is configured to be capable of simultaneously driving both the first evaporator and the second evaporator at their full cooling capacity.

Abstract: The present invention relates, in part, to heat transfer and refrigerant compositions and methods that include HFC-32; HFO-1234ze and HFC-125.

Abstract: A method for recovering and using energy from a fluid exiting an outlet of a compressor in an air conditioning system, the method including: disposing an ejector between a compressor and a condenser of an air conditioning system, the ejector including a first inlet for receiving a working fluid and a second inlet for receiving an ejection fluid; connecting the first inlet of the ejector to an outlet of the compressor; connecting an outlet of the ejector to an inlet of the condenser; and connecting the second inlet of the ejector to an evaporator of the air conditioning system.

Abstract: An air conditioning apparatus including a compressor, an outdoor heat exchanger, an indoor heat exchanger, and an expansion valve to depressurize a refrigerant. The refrigerant is formed of hydro fluorocarbon (HFC). The compressor includes a compression unit to compress the refrigerant, a motor unit to provide rotational power to the compression unit, and an oil accommodation portion to store oil to reduce friction between the rotating shaft and the compression unit and lower a temperature of the compressor, and the oil contains a carbon nanoparticle. Even when an HFC-based refrigerant producing high discharge temperature in a compressor is used, deterioration of the compressor due to the high temperature is prevented. In addition, by lowering the operational temperature of the compressor, the reliability and performance of the compressor using the HFC-based refrigerant and the air conditioning apparatus using the same may be enhanced.

Abstract: The invention relates to a refrigeration circuit having a mono- or multi-component refrigerant circulating therein, said refrigeration circuit comprising, in the direction of flow, a condenser, a collecting container, a relief device connected upstream of an evaporator, an evaporator and a compressor unit with single-stage compression. According to the invention, there is an intermediate relief device (a) arranged between the condenser (1) and the collecting container (3). Furthermore, there is disclosed a method of operating a refrigeration device in which pressure relief of the refrigerant to an (intermediate) pressure of 5 to 40 bar is effected in the intermediate relief device (a) arranged between the condenser (1) and the collecting container (3).

Abstract: The invention relates to a refrigeration circuit having a mono- or multi-component refrigerant circulating therein, said refrigeration circuit comprising, in the direction of flow, a condenser, a collecting container, a relief device connected upstream of an evaporator, an evaporator and a compressor unit with single-stage compression. According to the invention, there is an intermediate relief device (a) arranged between the condenser (1) and the collecting container (3). Furthermore, there is disclosed a method of operating a refrigeration device in which pressure relief of the refrigerant to an (intermediate) pressure of 5 to 40 bar is effected in the intermediate relief device (a) arranged between the condenser (1) and the collecting container (3).

Abstract: A temperature control system employing a two-phase refrigerant and a compressor/condenser loop is disclosed wherein a two phase refrigerant condenses within the load, the system including a thermo-expansion valve that simultaneously allows refrigerant flow through the thermo-expansion valve and regulates a temperature of the refrigerant in its two phase state ahead of the thermo-expansion valve, and wherein a flow through the thermo-expansion valve occurs only after a pressure and temperature upstream of the thermo-expansion valve reaches a final temperature and pressure.

Abstract: A method, and or process, of achieving a double-wall heat recovery refrigeration condenser system, capable, within a single compound condenser, of energy transfer to a heat recovery heat sink, or multiple heat recovery heat sinks, as well as a heat rejection sink, in, any combination of, or all of, the individual heat sinks, in any ratio, requiring no change in the amount of active working fluid, typically a refrigerant, charge requirement. The compound condenser thus eliminates the need for working fluid storage, and controls for controlling said storage, found in typical multi heat sink condenser systems, and also, thus eliminates the complexity associated with said controls and storage. This manner of condenser is used as part of a vapor compression refrigeration system to typically, but not exclusively, reclaim heat from a refrigeration process, for the purpose of heating water.

Abstract: An apparatus includes a scrubber bed, a cooling unit operatively connected to the scrubber bed, and a frame configured for a user to carry the apparatus. The cooling unit includes a compressor, a condensing coil operatively connecting the compressor to an expansion valve, and an evaporating coil operatively connecting the expansion valve to the compressor, and a first fluid circulating through the compressor, the condensing coil, the expansion valve, and the evaporating coil. A method of cooling a gas in a rebreather apparatus includes scrubbing an exhalation gas to produce a recycled gas having a lower concentration of carbon dioxide than the exhalation gas, compressing, condensing, expanding, and evaporating a refrigerant in a closed-loop system, transferring heat energy from the recycled gas to the refrigerant, and metering a cooled gas to the user.

Abstract: A cooling system (1) that cools an HV apparatus (31) includes a compressor (12) that circulates a refrigerant, a heat exchanger (14) that performs heat exchange between the refrigerant and outside air, an expansion valve (16) that reduces the pressure of the refrigerant, a heat exchanger (18) that performs heat exchange between the refrigerant and air-conditioning air, a cooling portion (30) that cools the HV apparatus (31) using the refrigerant that flows between the heat exchanger (14) and the expansion valve (16), and a gas accumulator (70) that retains a gas-phase refrigerant gasified by heat exchange with the HV apparatus (31) in the cooling portion (30).

Abstract: A method and a device for compressing a gas-phase medium, particularly hydrogen or natural gas, in a single-stage or multistage process using at least one piston compressor, wherein the medium may have a water content up to total saturation with water. The medium to be compressed is heated before the compression at least to such point that the water is unable to condense out during the compression process, and the compressed medium undergoes a water separation process.

Abstract: The invention relates to an air conditioning device comprising a refrigerant circuit and a coolant circuit. The refrigerant circuit comprises at least a compressor, an internal heat exchanger, an external heat exchanger and an evaporator The coolant circuit comprises at least a first heat exchanger associated with a first component, a second heat exchanger associated with a second component and a radiator. A fluid/fluid heat exchanger is installed in the refrigerant circuit and in the coolant circuit, with the coolant circuit comprising a first loop and a second loop which are interconnected by an interconnection device. The first loop comprises the fluid/fluid heat exchanger, the first heat exchanger associated with the first component and a means for heating the coolant with the means interposed between the interconnection device and the fluid/fluid heat exchanger, the second loop comprising the second heat exchanger associated with the second component and the radiator.

Abstract: A HVAC system including a multi-function unit for conditioning and controlling the flow of refrigerant. The multi-function unit may be contained within a housing that houses a receiver/dryer, integral heat exchanger and thermal expansion valve.

Abstract: An object is to prevent performance deterioration by a refrigerant having a low global warming potential (GWP) and to decrease the diameter of a connection pipe. A refrigerating cycle device includes a compressor 1, a heat source-side heat exchanger 3, a first expansion device 4, a liquid-side connection pipe 7, a second expansion device 21, a user-side heat exchanger 22, and a gas-side connection pipe 8 sequentially connected. In addition, a refrigerating cycle uses a refrigerant of R32. The outer diameters of the liquid-side connection pipe and the gas-side connection pipe are set to “(D0?1)/8 inch” (wherein “D0/8 inch” is the outer diameter of a connection pipe in the use of a refrigerant of R410A). The liquid-side connection pipe has a range of the D0 given “2?D0?4” and the gas-side connection pipe has a range of the D0 given “3?D0?8”.

Abstract: A heat exchanger comprises a first header (1), a second header (2) spaced apart from the first header (1) by a predetermined distance, flat tubes (3) each of which defines two ends connected to the first and second headers (1, 2), respectively, to communicate the first and second headers (1, 2), fins (4) interposed between adjacent flat tubes (3), and a flow member defining a fluid-flow passage and forming a partition-wall-type heat-exchanging unit with the second header (2). A refrigeration system comprises a compressor, a condenser, a throttle device, and an evaporator that is the heat exchanger. The compressor, condenser, throttle device, and evaporator are connected sequentially, and at least part of refrigerant flowing out of an outlet of the condenser enters into the flow member to exchange heat with a refrigerant flowing out of an outlet of the evaporator.

Abstract: A cooling system includes a heat exchanger through which a refrigerant flows, and which rejects heat to a fluid, an evaporator, a first circuit having an expansion device, a second circuit having an expansion machine coupled to a compressor, and a set of valves arranged to direct the refrigerant through the first circuit, the second circuit, or both the first and second circuits based on ambient conditions.

Abstract: A method of constructing a data hall utilizing a plurality of data hall modules, each data hall in the form of a container comprising a top, a bottom, a first pair of opposed sides and second pair of opposed sides, and at least one side of the first pair of opposed sides is open and has a removable panel. For the purpose of transportation, the panel is removably fixed to the open side, and during construction so the plurality of data hall modules are bayed in side-by-side relationship so that their open sides are adjacent to each other and/or in end-to-end relationship so that their open ends are adjacent to each other.

Abstract: A refrigerator of the present invention includes a Rankine cycle heat engine and a refrigeration cycle heat engine which share a condenser, and drives a compressor of the refrigeration cycle by an expander of the Rankine cycle. A screw expander and a screw compressor are set up within a common casing, and the exhaust side of a rotating shaft of the screw expander is connected to the discharge side of a rotating shaft of the screw compressor. Preferably, an intermediate space in which an exhaust passage of the screw expander and a discharge passage of the screw compressor are merged together and connected to a condenser, and a coupling which connects the rotating shaft of the screw expander to the rotating shaft of the screw compressor is housed is formed within the casing.

Abstract: A refrigerant mixture for use in multistage auto cascade ultralow and cryogenic temperature refrigeration systems. Particularly, the present invention relates to a refrigerant mixture comprising one hydrochlorofluorocarbon (HCFC) and the major proportion includes hydrofluorocarbons (HFC), fluorocarbons, hydrocarbons and natural gases. More particularly, the present invention relates to non-flammable, non-toxic refrigerant mixture having no chlorofluorocarbon (CFC). Further, the present invention aims in providing a refrigerant mixture having low Ozone Depleting Potential (ODP) combined with low Global Warming Potential (GWP).

Abstract: In one embodiment, the present invention relates to the use of ionic liquids and gas refrigerants in a refrigerant composition in a temperature adjustment system, such as a refrigeration system.

Abstract: An outdoor heat exchanger has a total length of refrigerant flow passage in which a refrigerant flows along a refrigerant tube, and exchanges heat with outdoor air, the outdoor heat exchanger including a plurality of refrigerant tubes spaced apart from one another, a first and second header respectively coupled to both end portions of each of the refrigerant tubes, and a plurality of heat exchanging fins coupled to outer surfaces of the refrigerant tubes to widen a surface making contact with an outside, wherein a total length of a refrigerant flow passage in which a refrigerant flows along the refrigerant tube and exchanges heat with outdoor air is equal to or greater than about 1500 mm and equal to or less than about 6000 mm, in which range, the outdoor heat exchange achieves the optimum performance.

Abstract: A plate-type heat exchanger having a first heat exchanger portion configured to receive a refrigerant flow and a hot side coolant flow having a lower temperature than the refrigerant flow, a second heat exchanger portion configured to receive the refrigerant flow exiting from the first heat exchanger portion and a cold side coolant flow having a higher temperature than the refrigerant flow exiting from the first heat exchanger portion, and an internal heat exchanger portion sandwiched between the first heat exchanger portion and the second heat exchanger portion. The refrigerant flow through the plate type heat exchanger is in non-contact thermal communication with the hot side coolant flow and the cold side coolant flow. The cold side coolant flow transfers heat energy to the refrigerant, which in turn transfer that heat energy to the hot side coolant flow.

Abstract: A method and system for controlling a unitary room air conditioner and for reducing peak loads can comprise a communications transceiver coupled to a relay or switch. This relay or switch can control the flow of electricity to a compressor of the air conditioner. The communications transceiver can receive signals which may direct the communications transceiver to open or close the relay or switch. In this way, the compressor can be controlled independent of the air conditioner's control logic. In other words, the operation of the compressor can be controlled with signals which originate outside of the unitary air conditioner and independent of the air conditioner's own internal control logic.

Abstract: A method for preventing condensation on a surface of a domestic refrigeration device and a corresponding domestic refrigeration device having a refrigerated chamber, a refrigerant line, and a refrigerant circulation system structured to transfer heat energy from the refrigerated chamber into the refrigerant circulation system via the refrigerant line. The refrigerant line may include a heat-emitting section in heat-conducting contact with a trim strip of the refrigeration device running below the refrigerated chamber.

Abstract: An example of the disclosed refrigerant system includes a compressor having a motor that is cooled by motor cooling fluid provided to the motor from the main refrigerant loop by a motor cooling circuit. The example system further includes a sub-cooling circuit to cool the motor cooling fluid.

Abstract: A cooling device for a charger capable of simplifying the device configuration and reducing the power consumption is provided. Cooling device for cooling the charger for charging a battery with use of power supply received from a power source includes a compressor for circulating a cooling agent, a condenser for condensing the cooling agent, a decompressor for decompressing the cooling agent condensed by condenser, an evaporator for evaporating the cooling agent decompressed by the decompressor, and a cooling portion for cooling the charger with use of the cooling agent flowing from the condenser, and the cooling portion is provided on a path of the cooling agent flowing from the condenser to the evaporator.

Abstract: A system is provided including a vapor compression cycle. The vapor compression cycle includes an operably coupled compressor, condenser, first expansion device, and evaporator through which a refrigerant circulates. A thermal energy storage unit includes a heat exchanger arranged within a phase change material. The heat exchanger is fluidly coupled to the vapor compression cycle with a plurality of conduits and valves such that refrigerant flows through the heat exchanger in a heat transfer relationship with the phase change material. When the system is in a first mode, the heat exchanger is configured to function similar to the evaporator and the phase change material is configured to store thermal energy. When the system is in a second mode, the heat exchanger is configured to function similar to the condenser and the phase change material is configured to release thermal energy.

Abstract: A refrigerating circuit in which a compressor, a gas cooler, a first pressure reducing unit and an evaporator are successively annularly connected to one another via pipes includes a second pressure reducing unit and a liquid receiver between the gas cooler and the first pressure reducing unit, and the liquid receiver is connected to the suction port of the compressor via a pipe. Then, the opening/closing degree of the second pressure reducing unit is controlled in accordance with a pressure difference between the discharge-side pressure of the compressor and the suction-side pressure thereof, whereby the amount of the refrigerant to be circulated is increased when the refrigerating ability runs short, and the excessive refrigerant is received in the liquid receiver when the refrigerating ability becomes excessive, so that the amount of the refrigerant to be circulated can be adjusted.

Abstract: A non-flammable refrigerant mixture is disclosed. The non-flammable refrigerant mixture may include from 20 weight percent to 25.5 weight percent HFO-1234yf, (b) from 20 weight percent to 24.5 weight percent HFC-32, (c) from 24.5 weight percent to 30 weight percent HFC-125, (d) from 25.5 weight percent to 30 weight percent HFC-134a, and optionally (e) from about 0.0001 weight percent to 10 weight percent trans-HFO-1234ze. These refrigerant mixtures are useful as components in compositions also containing non-refrigerant components (e.g., lubricants), in processes to produce cooling, in methods for replacing refrigerants R-404A, R-507, R-407A, R-407C, R-407F and/or R-22, and in refrigeration apparatuses.

Abstract: A power unit for air conditioning systems installed on boats, including at least one compressor, of the mass produced type used in the automobile industry, connected to the circuit of the conditioning system, at least one mechanical pump for circulation of a heat exchange fluid along a circuit and one or more rotating electrical machines. Operation of the power unit is ensured during navigation by an internal combustion engine for marine propulsion, for example a four stroke engine of the type normally used for outboard marine propulsion, mass produced at low costs, while when the boat is in port it is ensured by an electric motor. The fan coils are also of the mass produced type used in the automobile industry.

Abstract: Compositions containing 2,3,3,3-tetrafluoropropene and to the uses thereof as heat transfer fluid, expansion agents, solvents and aerosol. Compositions essentially containing between 10 and 90 wt. % of 2,3,3,3-tetrafluoropropene, between 5 and 80 wt. % of HFC-134a and between 5 and 10 wt. % of HFC-32. Compositions essentially containing from 10 to 45% by weight of 2,3,3,3-tetrafluoropropene, from 50 to 80% by weight of HFC-134a and from 5 to 10% by weight of HFC-32.

Abstract: A first expansion valve is provided in a first refrigerant circulation passage through which the refrigerant discharged from a compressor is able to circulate by passing sequentially through an external heat exchanger and an evaporator and returning to the compressor. A second expansion valve is provided in a second refrigerant circulation passage through which the refrigerant discharged from the compressor is able to circulate by passing sequentially through an auxiliary condenser and the external heat exchanger and returning to the compressor. The second expansion valve regulates the valve opening degree such that the refrigerant state at an inlet side of the compressor during a heating operation is in a range where the dryness of refrigerant is greater than or equal to 0.9 and the superheat of refrigerant is less than or equal to 5° C.

Abstract: A heat exchanging system exchanging heat between refrigerant and a battery includes: a compressor circulating refrigerant; a heat exchanger exchanging heat between the refrigerant and outside air; an expansion valve decompressing the refrigerant; a heat exchanger exchanging heat between the refrigerant and air-conditioning air; a heat exchanging portion connected in parallel with the heat exchanger and exchanging heat between the refrigerant and the battery; a bypass passage providing fluid communication between a path of the refrigerant between the compressor and the heat exchanger and a path of the refrigerant between the expansion valve and the heat exchanger; an expansion valve provided in the bypass passage and decompressing the refrigerant flowing through the bypass passage; and a selector valve allowing or interrupting flow of the refrigerant via the bypass passage.

Abstract: A system, apparatus and method for concentrating a solution. The system includes a humidification device and a solution flow path for flow of a solution to be concentrated to the humidification device. The humidification device includes humidification media to facilitate evaporation of liquid from the solution to be concentrated to gas as the solution to be concentrated passes through the humidification media thereby concentrating the solution. The method includes flowing a solution to be concentrated along a flow path to a humidification device including humidification media, flowing a gas through the humidification media, and flowing the solution to be concentrated through the humidification media. There is evaporation of liquid from the solution to the gas as the solution passes through the humidification media thereby concentrating the solution and producing a humidified gas. The solution to be concentrated may be salt water and the gas may be air.

Abstract: There is provided a CO2 cooling system which comprises: a compression stage in which CO2 refrigerant is compressed; a cooling stage in which the CO2 refrigerant releases heat; and an evaporation stage in which CO2 refrigerant, having released heat in the cooling stage, absorbs heat. The CO2 refrigerant exiting the evaporation stage is directed to at least one of the compression stage, before being directed to the cooling stage, and the cooling stage by at least one of gravity and natural convection. There is also provided a method for operating a CO2 cooling system.

Abstract: Provided is a regenerative air-conditioning apparatus. The regenerative air-conditioning apparatus includes an outdoor unit comprising a compressor and an outdoor heat exchanger, an indoor unit disposed on a side of the outdoor unit, the indoor unit comprising an indoor heat exchanger, a refrigerant tube connecting the outdoor unit to the indoor unit to guide circulation of a refrigerant, a heat accumulation bath disposed on at least one side of the outdoor unit and the indoor unit to store cool air or heat, a first tube extending from the refrigerant tube to one side of the heat accumulation bath, a second tube extending from the other side of the heat accumulation bath to the refrigerant tube, and a third tube branched from the second tube, the third tube being connected to the refrigerant tube.

Abstract: To provide a vehicle air-conditioning apparatus which can ensure a dehumidifying ability even during an intermediate thermal load time where an outside air temperature becomes high during a dehumidifying heating operation time. In a vehicle air-conditioning apparatus, at least a compressor 6, a first heat exchanger 2, a first refrigerant control part 9 which is formed by connecting a first expansion device 7 and a first open/close valve 8 in parallel to each other, a vehicle exterior heat exchanger 4, a second refrigerant control part 13 which is formed by connecting a second expansion device 12 and a second open/close valve 11 in series, and a second heat exchanger 3 are connected in the preceding order in a loop.

Abstract: A refrigeration system is provided that uses dual evaporators and a zeotropic refrigerant mixture to provide more efficient cooling. The refrigeration system can be used in e.g., a refrigerator having a fresh food compartment and a frozen food compartment to provide separate cooling for each compartment. Multiple exemplary embodiments are described including embodiments utilizing a single compressor and a single condenser with dual evaporators.

Abstract: The invention relates to an apparatus (10) for sectioning histological samples, which encompasses a sectioning unit (18), a sample holder (14), and a drive unit (16) for moving the sample holder (14) relative to the sectioning unit (18) in order to section the sample (12). Also provided is a cooling unit (20), for cooling at least a sub-region of the sample holder (14), which encompasses a compressor for compressing a refrigerant, a capillary tube (25) for delivering the liquefied refrigerant from the compressor (22) to the sample holder (14), and a return line (28) for returning the refrigerant from the sample holder (14) to the compressor (22). At least a sub-region (32) of the capillary tube (25) is embodied in a spiral shape.

Abstract: An air conditioner may include: a compressor; a condenser; an expander; a bypass pipe that bypasses the refrigerant discharged from the condenser to an inlet side of the compressor; a refrigerant heating apparatus that heats the refrigerant flowing in the bypass pipe; and a valve that controls the refrigerant flowing in the bypass pipe. The refrigerant heating apparatus may include: a refrigerant pipe in which the refrigerant flows; and a heating unit that is provided on an outer surface of the refrigerant pipe and has a carbon nanotube heating element that is heat-generated by itself by a supplied power.

Abstract: A pre-charged heating/cooling system is shown for installation by unlicensed personnel. An outside unit includes an outside coil, outside fan, compressor and a reversing valve. An inside unit has an inside coil, inside fan for drawing air through the inside coil and discharging the conditioned air into the enclosed space, and a power cord connection. A cable sheath contains all connections from the inside unit to the outside unit with electrical connections being secured in position on the outside unit by a cover and a bracket. An expandable window sill holds and seals the cable sheath in a window opening.

Abstract: Disclosed are a compressor and a refrigerating machine having the same, wherein a bearing member (ball bearing) is installed between both thrust bearing surfaces and an elastic member is disposed between the bearing member and at least one of the thrust bearing surfaces so as to allow a rolling contact between the ball bearing and the thrust bearing surface or a washer, thereby reducing a frictional loss at the thrust bearing surface and enhancing the performance of the compressor.

Abstract: The present technology relates to compositional blends that can be used as refrigerants, and more specifically to blends of vinylidene fluoride and at least one other component for use in very low temperature applications. In at least some examples, the second component can be selected from the group consisting of carbon dioxide and pentafluoroethane. Further, the compositions can be azeotropic or azeotrope-like.

Abstract: Embodiments of the present disclosure are directed toward systems and method for cooling a refrigerant flow of a refrigerant circuit with a cool water flow from a cool water storage to generate a warm water flow and to cool the refrigerant flow by a subcooling temperature difference, flowing the warm water flow to the cool water storage, and thermally isolating the warm water flow from the cool water flow in the cool water storage.

Abstract: Provided are mixed refrigerant systems and methods and, more particularly, to a mixed refrigerant system and methods that provides greater efficiency and reduced power consumption.

Abstract: A cooling system includes a first heat exchanger, an evaporator coupled to a thermal load of an aircraft. first and second cooling circuits coupled to the heat exchanger, the first and second cooling circuits selectable via a set of cooling circuit valves that are arranged to direct a refrigerant through the first circuit, the second circuit, or both the first and second circuits based on air passing through the first heat exchanger at ambient conditions of the aircraft, and a receiver configured to accumulate reserve refrigerant to provide flexibility in system operation as the cooling system operates in sub-critical, trans-critical, and super-critical modes of operation.

Abstract: The present invention relates, in part, to heat transfer compositions, and associated systems and methods, which include a first composition selected from the group consisting of HFO-1233zd, HFC-245fa, and combinations of these: and optionally, a second composition selected from the group consisting of HFO-1234ze, HFC-134a, and combinations of these.

Abstract: A variable-efficiency screw compressor for use in a closed-loop system configured to perform refrigeration is provided. The variable-efficiency screw compressor includes an inlet port to draw refrigerant into the variable-efficiency screw compressor, one or more rotating screws in fluid communication with the inlet port to compress the refrigerant, forming a compressed refrigerant, a discharge port in fluid communication with the rotating screws to receive the compressed refrigerant and discharge the refrigerant, wherein the discharge port includes an adjustable piston movable within the discharge port from a first position in which volume is higher to a second position in which volume is lower, the adjustable piston arranged and disposed to adjust volume of the discharge port in response to a change in demand.

Abstract: A refrigeration system includes a supplemental heat exchanger operably disposed between a condenser and an evaporator. This supplemental heat exchanger is located in selective fluid communication with the air in the conditioned space, and can be toggled between an “invisible” mode in which the heat exchanger acts as a simple fluid conduit between the condenser and evaporator, and a “humidity reduction” mode in which the heat exchanger operates to transfer heat from hot refrigerant to the colder conditioned space. This addition of heat into the conditioned space decreases the relative humidity of the conditioned space and subcools the refrigerant leading to the expansion valve and evaporator. This subcooling of the liquid enables the evaporator to operate at a lower temperature which enhances the moisture removal from the air moving through the evaporator.

Abstract: A compression mechanism portion housed in a closed case is provided with a partition plate located between a first cylinder and a second cylinder. The compression mechanism includes a first bearing discharge port formed to a first bearing and a first partition plate discharge port formed to the partition plate as discharge ports for discharging working fluid compressed in a first cylinder chamber, and also includes, as discharge port for discharging working fluid compressed in a second cylinder chamber, a second bearing discharge port formed to a second bearing and a second partition plate discharge port formed to the partition plate. A cross-sectional area of the first partition plate discharge port is formed to be smaller than a cross-sectional area of the first bearing discharge port, and a cross-sectional area of the second partition plate discharge port is formed to be smaller than a cross-sectional area of the second bearing discharge port.