Abstract: In a heat-source unit (15) which heats heating-medium water inside of a heat storage tank (16), a refrigerant circuit (30) is provided with a low-stage compressor (52), a high-stage compressor (62) and an expander (65) for power recovery. The low-stage compressor (52) is rotated by an electric motor (54) connected to a drive shaft (53) thereof. The high-stage compressor (62) is rotated by an electric motor (64) and the expander (65) connected to a drive shaft (63) thereof. A high-stage control section of a controller (90) adjusts the rotational speed of the high-stage compressor (62) in such a way that a value measured by an outlet water-temperature sensor (77) becomes a target temperature. A low-stage control section adjusts the rotational speed of the low-stage compressor (52) in such a way that a value measured by a discharge pressure sensor (74) becomes a target high pressure.

Abstract: In an air conditioner for a vehicle, in a heating operation for heating a vehicle compartment, when heating capacity is obtained by flowing a coolant through an inside of an indoor heat exchanger, the coolant flows directly in the inside of the indoor heat exchanger to heat air to be supplied to the vehicle compartment. In contrast, when the heating capacity is not obtained by flowing the coolant through the inside of the indoor heat exchanger, the coolant flows through a first water-refrigerant heat exchanger and a refrigerant in a heat pump cycle circulates so that heat of the coolant is absorbed by the refrigerant in the first water-refrigerant heat exchanger, and the air is heated in the indoor heat exchanger by using heat of the refrigerant that has absorbed the heat of the coolant.

Abstract: An air conditioning system includes a refrigeration cooling coil in fluid communication with process air, a refrigeration circuit containing refrigerant, a heat exchanger in fluid communication with the refrigerant and water, the heat exchanger adapted to transfer heat from the refrigerant to the water, a hot water coil in fluid communication with the water, a desiccant rotor having a process portion in fluid communication with the process air and a reactivation portion, and a reactivation blower adapted to move reactivation air over the hot water coil and through the reactivation portion of the desiccant rotor. A method of conditioning air is also described.

Abstract: To provide an air-conditioning hot-water supply complex system that can simultaneously process a cooling load, a heating load, and a high-temperature hot-water supply load to provide a stable heat source all through the year. The air-conditioning hot-water supply complex system provides a bypass pipe in which a bypass electromagnetic valve is installed in parallel with a heating medium-refrigerant heat exchanger between a gateway of refrigerant piping of the heating medium-refrigerant heat exchanger to control an inflow amount of the refrigerant for hot-water supply to the heating medium-refrigerant heat exchanger by making the refrigerant for hot-water to flow into a bypass pipe by opening and closing the bypass electromagnetic valve.

Abstract: A Refrigerating system (2) comprises a refrigerating circuit (4) having, in flowing direction, a compressor (8), a gas cooler (10), a first expansion device (12), an intermediate pressure container (14), a second expansion device (16), an evaporator (18) and refrigerant conduits (22, 24, 26, 28, 30, 32) circulating a refrigerant therethrough. The first expansion device (12) expands the refrigerant to an intermediate pressure level. A first refrigerant conduit (22) of the refrigerant conduits (22, 24, 26, 28, 30, 32) connects the compressor (8) and the gas cooler (10), and a second refrigerant conduit (24) of the refrigerant conduits (22, 24, 26, 28, 30, 32) connects the gas cooler (10) and the first expansion device (12), the first refrigerant conduit (22), the gas cooler (10), and the second refrigerant conduit (24) forming a transcritical portion of the refrigerating circuit (4).

Abstract: The present invention relates to an absorptive heat pump circulation systems and heating method. According to the present invention, an absorption heat pump circulation system comprises: a generator, equipped with a heat exchanger; an evaporator, equipped with a driving heat source; an absorber, equipped with a heat exchanger; and an absorbent crystallizer. An absorption solution entrance of the crystallizer is connected to an absorption solution exit of the absorber and a crystallized absorption solution exit of the crystallizer is connected to an absorption solution entrance of the generator, and a crystal output of the crystallizer is connected to an absorption solution Entrance of the absorber; The heat exchanger of the generator and the heat exchanger of the absorber are connected to form a thermal cycling loop, which transfers the absorption heat generated by the absorber to the generator.

Abstract: Cryogenic refrigeration employs a pulse tube cryo-cooler and a dilution refrigerator to provide very low temperature cooling, for example, to cool superconducting processors. Continuous cryogenic cycle refrigeration may be achieved using multiple adsorption pumps. Various improvements may include multiple distinct thermal-linking points, evaporation pots with cooling structures, and/or one or more gas-gap heat switches which may be integral to an adsorption pump. A reservoir volume may provide pressure relief when the system is warmed above cryogenic temperature, reducing the mass of the system. Additional heat exchangers and/or separate paths for condensation and evaporation may be provided. Multi-channel connectors may be used, and/or connectors formed of a regenerative material with a high specific heat capacity at cryogenic temperature. Flexible PCBs may provide thermal links to components that embody temperature gradients.

Abstract: An air conditioning apparatus includes a refrigerant circuit, first and second shut-off mechanisms, a communication pipe and a refrigerant detection mechanism. The refrigerant circuit is configured to at least perform a cooling operation. The first shut-off mechanism is downstream of the receiver and upstream of the liquid refrigerant connection pipe when the cooling operation is performed. The second shut-off mechanism is downstream of the heat source-side heat exchanger and upstream of the receiver when the cooling operation is performed. The communication pipe interconnects the refrigerant circuit between the first and second shut-off mechanisms, and the refrigerant circuit on the suction side of the compressor. The refrigerant detection mechanism is upstream of the second shut-off mechanism when the cooling operation is performed.

Abstract: An air conditioner includes a propeller fan within a unit body, an L-shaped heat exchanger on a lateral surface and a rear surface of the unit body, a bell mouth installed radially outward of the propeller fan, and a plate to partition compressor space from propeller fan space, and to guide an airstream from the heat exchanger toward the bell mouth. A first bell mouth portion, which includes a sectional position and thereabout where a length of a segment connecting an end of the heat exchanger on a fan rotating direction side and a fan center is maximized, extends toward an upstream side longer than a second bell mouth portion which is located at a sectional position in a line-symmetrical relation to the first bell mouth portion with respect to a vertical line passing the fan center.

Abstract: A vapour compression device including an internal heat exchanger, a low-pressure compressor and an associated gas cooler, a fluid distributor separating the fluid into a main circuit of the cycle and into an auxiliary cooling circuit of the cycle, an auxiliary expansion system placed on the auxiliary cooling circuit, and a main expansion system placed on the main circuit of the cycle. The device also includes a high-pressure compressor and an associated gas cooler placed on the main circuit of the cycle. A method for performing a transcritical fluid cycle including a substantially isentropic compression step of the fluid, on the main circuit of the cycle, to reach a maximum high pressure greater than a critical pressure of the fluid, and an isobaric cooling step of the fluid to substantially reach a cold source temperature.

Abstract: A vehicle air conditioner includes a heat storage unit having a heat storage medium, a first heat exchanger for heat exchange with air that is sent out of the vehicle, a second heat exchanger for heat exchange with air that is sent to the vehicle compartment, and a peltier device. The heat storage unit has a first inlet port and a first outlet port through which heat exchange medium flows in and out of the heat storage unit where heat is exchanged between the heat storage medium and the heat exchange medium. The peltier device is operable to provide one of positive heat and negative heat to the heat exchange medium flowing through the heat storage unit and also to provide the other of the positive heat and the negative heat directly or indirectly to the first heat exchanger.

Abstract: A refrigeration apparatus uses a refrigerant that operates in a region including critical processes, and includes a compression mechanism having first and second compressors, a heat-source-side heat exchanger, an expansion mechanism, a utilization-side heat exchanger, an intercooler, and an intermediate refrigerant pipe. The first compressor has a first low-pressure compression element and a first high-pressure compression element to increase pressure of refrigerant more than the first low-pressure compression element. The second compressor has a second low-pressure compression element and a second high-pressure compression element to increase pressure of refrigerant more than the second low-pressure compression element. The intermediate refrigerant pipe causes refrigerant discharged by the first and second low-pressure compression elements to pass through the intercooler and be sucked into first and second high-pressure the compression elements.

Abstract: A refrigerant vapor compression system has a primary refrigerant circuit including a compression device, a refrigerant heat rejection heat exchanger and a refrigerant heat absorption heat exchanger, and an economizer circuit including an economizer refrigerant line. A bypass flow control device controls refrigerant vapor flow through a bypass line extending between the economizer refrigerant line and a suction pressure portion of the primary refrigerant circuit. A flow control apparatus operatively associated with the economizer refrigerant line provides different flow resistance to refrigerant flow through the economizer refrigerant line in a first direction from an intermediate stage of the compression device to the suction portion of the primary refrigerant circuit and in a second direction from the economizer into an intermediate pressure stage of the compression device.

Abstract: A refrigerant vapor compression system is provided that includes a refrigerant circuit and a lubricant cooler circuit. The lubricant cooler circuit is operatively associated with the compression device for cooling a lubricant associated with the compression device and includes a heat exchanger coil disposed downstream of the refrigerant heat absorption heat exchanger with respect to the flow of heating medium. The lubricant cooler heat exchanger defines a flow path for passing the lubricant in heat exchange relationship with the cooled heating medium leaving the refrigerant heat absorption heat exchanger.

Abstract: An HVAC&R system is disclosed that utilizes energy-efficient valving. The valving controls the flow of refrigerant and may be adapted for evaporator or condenser applications, on both AC systems and heat pumps (as well as chillers and other refrigeration systems). The valving may provide simultaneous and individualized control of flow through individual coils or groups of coils for improved control of evaporation, condensation, defrosting and so forth. In some configurations a common sensor may be shared between individual coils or groups of coils and may provide sensed parameters to control circuitry for controlling the valving. Other configurations may include bypass valving to direct fluid around the flow control valving. In yet other configurations, a valve may be used to bypass tapped vapor around a heat exchanger functioning as an evaporator.

Abstract: A supercooling apparatus of a simultaneous cooling and heating type multiple air conditioner comprises a liquid pipe header connected to outdoor heat exchangers, a plurality of branch liquid pipes branched from the liquid pipe header and connected to a plurality of indoor heat exchangers, respectively, and a supercooling mechanism mounted at least one of the branch liquid pipes for cooling refrigerant flowing to the indoor heat exchangers. The liquid refrigerant discharged from the heating-side indoor heat exchangers is supercooled by supercooling heat exchangers, and is then introduced into the cooling-side indoor heat exchangers. Consequently, noise generated from the cooling-side heat exchangers during the simultaneous cooling and heating operation is reduced, and cooling capacity of the multi air conditioner is improved.

Abstract: A refrigerant system is provided with a control for its expansion device. The control operates the expansion device to adjust the superheat of the refrigerant leaving an evaporator to have desired dehumidification for air being delivered into an environment to be conditioned.

Abstract: A refrigeration system includes a chiller with an integrated free cooling system and refrigeration system. In certain embodiments, the chiller may be a single package unit with all equipment housed within the same support frame. The chiller may generally include three modes of operation: a first mode that employs free cooling, a second mode that employs free cooling and implements a refrigeration cycle, and a third mode that uses the free cooling system to remove heat from the refrigeration system. A heat exchanger may be shared between the free cooling system and the refrigeration system to transfer heat from the refrigeration system to the free cooling system.

Abstract: An air conditioner for communication equipment is provided. The air conditioner includes an indoor module disposed at an indoor space of a base station having communication equipment and including an indoor heat exchanger and an indoor ventilator, an outdoor module disposed at an outside of the base station and including an outdoor ventilator, a brine cooling cycle including first and second outdoor brine heat exchangers, and first and second brine coolers, the indoor heat exchanger, and a brine pump, which are connected through a brine pipe, a first refrigerant cooling cycle including an expansion valve, the first brine cooler, a compressor, and a first outdoor refrigerant heat exchanger, which are connected through a first refrigerant pipe, and a second refrigerant cooling cycle including an expansion valve, the second brine cooler, a compressor, and a second outdoor refrigerant heat exchanger, which are connected through a second refrigerant pipe.

Abstract: A reversible cooling/heating system (20) has an in-line accumulator/dryer unit (74). The accumulator/dryer unit has a body having first and second ports (76, 78). A foraminate conduit (82) is positioned at least partially within the body. A desiccant (80) at least partially surrounds a first portion of the conduit. A pressure-actuated valve is located along the conduit.

Abstract: A refrigerant circuit (20) is provided with an intermediate pressure heat exchanger (40) and a gas/liquid separator (51). In a cooling mode, a part of refrigerant condensed in an outdoor heat exchanger (36) flows into injection piping (43). The refrigerant admitted into the injection piping (43) is pressure reduced down to an intermediate pressure during its passage through an injection expansion valve (44), evaporates in the intermediate pressure heat exchanger (40), and is supplied to an intermediate pressure port (32) of a compressor (31). In a heating mode, refrigerant condensed in an indoor heat exchanger (71) is pressure reduced down to an intermediate pressure during its passage through an indoor expansion valve (72) and then flows into the gas/liquid separator (51). And, the intermediate pressure gas refrigerant within the gas/liquid separator (51) is supplied to the intermediate pressure port (32) of the compressor (31).

Abstract: A compressor includes a casing, a screw rotor fitted in the casing, at least one economizer port, and a control unit. The at least one economizer port is arranged to discharge refrigerant into compression chambers formed between the casing and the screw rotor. The control unit is configured to advance timing of opening of the at least one economizer port to the compression chambers in accordance with increase in rotating speed of the screw rotor.

Abstract: An auxiliary air conditioning system (7) for a motor vehicle (1), comprising a first heat exchanger (17) adapted to be installed inside a passenger compartment (4) of the motor vehicle and an external unit (43) comprising an auxiliary engine (8), an auxiliary compressor (12) driven by the auxiliary engine (8) and a second exchanger (17). The system comprises a switching valve (20) for selectively setting a first refrigerating cycle operating mode in which the first heat exchanger (17) serves as an evaporator and the second heat exchanger (14) serves as a condenser, and a second heat pump operating mode, in which the first heat exchanger (17) serves as a condenser and the fluid of the second heat exchanger (14) is cut off and the operative fluid is allowed to flow through a heating device (30) to receive thermal power independently from the outside environment temperature.

Abstract: A refrigeration system (20A) comprises an evaporator (27), a two-stage compressor (32) for compressing a refrigerant, a second compressor (34) for compressing the refrigerant, a heat rejecting heat exchanger (24) for cooling the refrigerant, a first economizer circuit (25A), and a second economizer circuit (25B). The first economizer circuit (25A) is configured to inject refrigerant into an interstage port (48) of the two-stage compressor (32). The second economizer circuit (25B) is connected to the second compressor (34).

Abstract: A refrigeration system (20A) comprises an evaporator (27) for evaporating a refrigerant, a two-stage compressor (32) for compressing the refrigerant, a single-stage compressor (34) for compressing the refrigerant, a heat rejecting heat exchanger (24) for cooling the refrigerant, a first economizer circuit (25A), and a second economizer circuit (25B). The first economizer circuit (25A) is configured to inject refrigerant into an interstage port (48) of the two-stage compressor (32). The second economizer circuit (25B) is configured to inject refrigerant into a suction port (52) of the single-stage compressor (34). The single-stage compressor (34) is configured to discharge into the interstage port (48) of the two-stage compressor (32).

Abstract: The present invention provides a configuration in which a compressor can be controlled using an inverter in an air conditioner where only a signal related to ON/OFF of the compressor is output from a control terminal. An operation controller for a compressor is configured so that the compressor can be controlled using an inverter based on an ON signal output from a control interface of an air conditioner. Specifically, a target value of at least one of an outlet air temperature, an evaporation temperature and a condensation temperature, and a suction pressure and a discharge pressure of the compressor is corrected according to a duration of the ON signal or a duration of the OFF state thereof, thereby controlling the frequency of the compressor.

Abstract: A refrigeration system (10) includes: a refrigerant circuit (11) performing a vapor compression refrigeration cycle by including a compressor (30), a utilization side heat exchanger (24) configured to allow refrigerant to perform heat exchange with air, and a heat-source side heat exchanger (25) configured to allow refrigerant to perform heat exchange with water; and a casing (14) housing the utilization side heat exchanger (24). The casing (14) contains a power supply (31) including a power semiconductor device and configured to supply electric power to the compressor (30), and also contains a cooler (19) configured to cool the power supply (31) by supplying air to the power supply (31).

Abstract: A vapor compression cycle system is combined with a Rankine cycle system, with the two systems having a common suction accumulator from which the compressor draws refrigerant vapor for the vapor compression cycle system and from which a pump draws liquid refrigerant for circulation within the Rankine cycle system. The vapor from the Rankine cycle system expander is passed to the compressor discharge to provide a mixture which is circulated within the vapor compression cycle system to obtain improved performance. The heat exchangers are sized so as to obtain a non-complete evaporation, with the resulting two-phase fluid passing to the suction accumulator to provide liquid refrigerant to the Rankine cycle system and vapor refrigerant to the vapor compression cycle system.

Abstract: An active charge control (ACC) in an air conditioner has a first portion of refrigerant passing into a compressor and a second portion held within the ACC. The first portion is substantially vapor and the second portion substantially liquid. Lubricant is included in both portions for lubricating the compressor. A lubricant mechanism includes a heat exchanger having a primary pathway thermally connected with the compressor and a secondary pathway operable between the ACC and the compressor. The secondary pathway transfers the refrigerant second portion to the compressor. The fluid inlet of the compressor retains liquid refrigerant. The secondary pathway delivers the refrigerant and the lubricant from the ACC to the compressor such that heat energy from the primary pathway is transmitted to the liquid refrigerant and lubricant in the secondary pathway evaporating the refrigerant in the secondary pathway such that refrigerant vapor and lubricant are sent to the compressor.

Abstract: The invention relates to a soldered refrigerant condenser that consists of a heat exchange network with flat pipes and corrugated ribs, of collector pipes that fluidically communicate with the flat pipes, and of a collector (10) that is arranged in parallel to one of the collector pipes. Said collector accommodates a dryer and/or a filter (31) and fluidically communicates with the collector pipe via two overflow openings (13, 14). The dryer is configured by a chamber containing a drying agent (28) and limited by a section (18) of the collector (10, 11) and two endplates (23, 24) that extend through the cross-section of the collector (10, 11).

Abstract: An atmospheric dehumidifier air handling unit producing condensation water from moisture in the atmospheric suitable for water generator and drinking purposes. A method and apparatus to produce pure condensation water from moisture in the atmosphere using energy saving and environmentally friendly atmospheric dehumidifier of a condensing unit. In warm climates, filtered and sterilized fresh atmospheric air is passed through several evaporator cooling coils to condense the moisture in the atmospheric air. The condensed water is then collected on a drip pan and into a discharge line cooler. In cool climates, filtered and sterilized cold fresh atmospheric air is passed to a condenser of the condensing unit of the air handling unit. The fresh heated air is then passed to several evaporator cooling coils to condense the moisture in the atmospheric air. The condensed water is then collected on a drip pan.

Abstract: A scroll compressor and a refrigerating apparatus having the same are provided. In the scroll compressor, an angle formed between an injection passage that guides refrigerant from a condenser back into an intermediate compression chamber and a back pressure passage that guides refrigerant from the intermediate compression chamber into a back pressure chamber may be designed so as to prevent leakage of refrigerant from the intermediate compression chamber into the back pressure chamber. This allows an appropriate pressure to be maintained the back pressure chamber, and increases an amount of refrigerant supplied into the compression chambers, thereby improving performance of the scroll compressor and a refrigerating apparatus in which such a scroll compressor is installed.

Abstract: A medium- and low-temperature integrated refrigerating/freezing system (40) comprises an integrated unit (41), a medium-temperature refrigerating cabinet (43), a low-temperature freezing cabinet (42) and corresponding connecting pipes (44). The integrated unit (41) further comprises a common condenser (54) for condensing the high-temperature and high-pressure gaseous refrigerant in the medium-temperature refrigerating system and the low-temperature freezing system, a common reservoir (55) for the storage of the high-temperature and high-pressure liquid refrigerant in the medium-temperature refrigerating system and the low-temperature freezing system, a subcooling adjusting mechanism (56, 57) for adjusting the subcooling degree in the low-temperature freezing system and a suction temperature adjusting mechanism (431, 432, 58) for adjusting the suction temperature of the low-temperature freezing system.

Abstract: Disclosed is a vehicle air conditioning system including not less than two evaporators 3, 4, in which internal heat exchangers 5, 6 are provided to the respective evaporator 3, 4; a first evaporator 3 is placed in a front part of a compartment 8A whereas a second evaporator 4 is placed in a rear part of the compartment 8B; and the second evaporator 4 is connected to the internal heat exchanger 6 extended from the engine room 7 to the compartment 8. The internal heat exchanger 6 has a triple tube structure in which a heat insulator 15 is provided between a high-pressure medium passage 13 and a low-pressure medium passage 14.

Abstract: A system for cooling a medium includes a line having coolant flowing therein, and a sub-cooling unit in fluid communication with the line. The sub-cooling unit receives a portion of the coolant diverted from the line to cool coolant flowing in the line. A method of cooling a medium is further disclosed.

Abstract: Air cooled chillers having a condenser section (300) sized to match chiller capacity and auxiliary cooling requirements satisfied by use of an independent cooling coil (314) dedicated to providing auxiliary cooling. The independent cooling coil (314) is located within the current condenser (300), but utilizes available space within the existing condenser, as well as a small portion of the airflow driven by the existing condenser fan (320). Thus, the auxiliary cooling capacity is provided with a single dedicated coil design, but which otherwise uses existing equipment and space.

Abstract: A method is provided for operating a refrigerant vapor compression system at substantially zero cooling capacity to facilitate tight temperature control within a climate-controlled environment associated with the refrigerant vapor compression system. The method includes the step of diverting substantially all refrigerant flow from the primary refrigerant flow circuit of the refrigerant vapor compression system at a first location downstream, with respect to refrigerant flow, of the heat rejection heat exchanger and upstream, with respect to refrigerant flow, of the evaporator refrigerant expansion device to reenter the primary refrigerant flow circuit at a second location downstream, with respect to refrigerant flow, of the evaporator and upstream, with respect to refrigerant flow, of the compression device.

Abstract: Method for converting thermal energy at a low temperature into thermal energy at a relatively high temperature by means of mechanical energy, and vice versa, with a working medium which runs through a closed thermodynamic circulation process, wherein the circulation process has the following working steps:—reversible adiabatic compression of the working medium, —isobaric conduction away of heat from the working medium,—reversible adiabatic relaxing of the working medium,—isobaric supply of heat to the working medium, and wherein the increase or decrease in pressure of the working medium is produced during the compression or relaxing, increasing or decreasing the centrifugal force acting on the working medium, with the result that the flow energy of the working medium is essentially retained during the compression or relaxing process.

Abstract: A refrigerant system is provided with at least two sequential stages of compression. An intercooler is positioned intermediate the two stages. The refrigerant flowing through the intercooler is cooled by a secondary fluid such as ambient air. A vapor/liquid injection function is also provided for the refrigerant system. The intercooler function and the vapor/liquid injection function are selectively activated on demand depending on environmental conditions and thermal load in a conditioned space. This invention is particularly important for the CO2 refrigerant systems operating in the transcritical cycle.

Abstract: An air conditioner indoor unit has a box-shaped body casing 1. A pair of air inlet ports 5 are formed in a front surface of the body casing 1. A pair of air outlet ports 7 are formed on both sides of each of the air inlet ports 5. A pair of air passages 6 are each formed in the body casing 1 and extend from the corresponding air inlet port 5 toward the air outlet ports 7. Turbofans 8 are arranged in the body casing 1 in correspondence with the air inlet ports 5. A pair of heat exchangers 9 are arranged on both sides of each of the turbofans 8 in correspondence with the associated two air outlet ports 7. A drain pan 15 is arranged below the heat exchangers 9 and the turbofans 8. Refrigerant pipes 21a, 21b, 21c, 21d, which connect the heat exchangers 9 to each other, are received in the drain pan 15.

Abstract: A refrigerant system has an economizer cycle. A vapor refrigerant from the economizer loop is returned to a dedicated economizer compression chamber. A main refrigerant is returned to a dedicated main compressor chamber. A bypass line communicates the two refrigerant flows.

Abstract: A refrigerating system is disclosed. Since heat exchange is performed between first and second evaporators by a heat exchanging unit, the first and second evaporators have temperatures similar to each other, thereby requiring no additional ‘pump-down’ operation. Also, a compressor does not have a discharge occurrence owing to no additional ‘pump-down’ operation, thereby having no loss and an enhanced reliability. Besides, since no additional pump-down operation is required, power consumption for operating the compressor so as to collect a remaining refrigerant is reduced. Accordingly, the efficiency of the refrigerating system is enhanced. Furthermore, as the ‘pump-down’ operation is not required, a backflow preventing unit for preventing a refrigerant collected from an evaporator from backflowing to the evaporator is not required. Accordingly, the fabrication cost is reduced.

Abstract: An indoor unit of an air conditioner includes a heat exchanger accommodated inside a indoor unit body which is a housing whose lower face is opened, a drain pan which is disposed below the heat exchanger and receives drain water generated at the heat exchanger, a drain pump which is detachably disposed within the indoor unit body, sucks drain water accumulated in the drain pan and discharges the drain water to the outside, a drain port which is disposed at a bottom face wall section of the drain pan, the port being an opening portion through which the drain pump is insertable, and a drain cap which openably closes the drain pump insertion port.

Abstract: An air-conditioning apparatus includes first and second outdoor units having first and second outdoor heat exchangers and first and second heat source-side degree of subcooling adjustment devices configured to adjust first and second degrees of subcooling in outlet sides of the first and second outdoor heat exchangers, respectively. First and second outdoor-side determination units are configured to determine first and second degrees of subcooling, respectively. A controller is configured to control the first and second heat source-side degree of subcooling adjustment devices, respectively, such that a difference between the first degree of subcooling and the second degree of subcooling is reduced when refrigerant is charged into a refrigerant circuit having the first outdoor heat exchanger and the second outdoor heat exchanger.

Abstract: An air conditioner for communication equipment is provided. The air conditioner includes an indoor module disposed at an indoor space of a base station having communication equipment and including an indoor heat exchanger and an indoor ventilator disposed closely to the indoor heat exchanger, an outdoor module disposed at an outside of the base station and including an outdoor ventilator, a brine cooling cycle including the indoor heat exchanger on a brine pipe, a brine pump, first and second outdoor brine heat exchanger, and first and second brine coolers, which are connected in a brine circulating direction, and a refrigerant cooling cycle including first and second expansion valves on a refrigerant pipe, the first and second brine coolers on the brine pipe, first and second compressors, first and second outdoor refrigerant heat exchangers, which are connected in a refrigerant circulating direction.

Abstract: A climate control system may include a cooling system having a compressor in fluid communication with a condenser and a evaporator and circulating a first fluid therebetween; a first heat exchanger in fluid communication with the cooling system and operable to remove heat from a second fluid; a reservoir in fluid communication with the first heat exchanger and adapted to receive the second fluid; a pump in fluid communication with the first heat exchanger and the reservoir and circulating the second fluid therebetween; a second heat exchanger in selective fluid communication with the first heat exchanger, the reservoir and the pump; and a valve movable between a first position allowing fluid communication between the reservoir and the second heat exchanger and a second position preventing fluid communication between the reservoir and the second heat exchanger, wherein heat is absorbed by the second fluid flowing through the second heat exchanger.

Abstract: A method is provided for applying a cover layer (9) to a net structure (4) to be used for medical purposes, in particular a thrombosis filter. The net structure (4) is applied to a planar substrate (1) that covers openings (5) of the net structure on one side, wherein the openings (5) across the uncovered side are filled with a sacrificial material (7), in particular copper. The net structure (4) is lifted from the substrate (1). A cover layer (9) is deposited on the surface previously covered by the substrate, and the sacrificial material (7) is removed.

Abstract: A refrigeration device includes a compression mechanism, a radiator, a first expansion mechanism, a second expansion mechanism, an evaporator, a first internal heat exchanger, a branch pipe, a third expansion mechanism, and a second internal heat exchanger. The first internal heat exchanger causes heat to be exchanged between refrigerant that flows from the radiator to the inflow side of the first expansion mechanism, and refrigerant that flows from the evaporator to the compression mechanism. The branch pipe branches from a third refrigerant pipe for connecting the radiator and the second expansion mechanism, and merges with the second refrigerant pipe. A third expansion mechanism is provided to the branch pipe. The second internal heat exchanger causes heat to be exchanged between refrigerant that flows out from the first expansion mechanism, and refrigerant that flows out from the third expansion mechanism.

Abstract: The present disclosure allows for easy settling of control of capability of an refrigeration apparatus for performing a supercritical refrigeration cycle. An air conditioner (10) includes: a refrigerant circuit (20) sequentially connecting a compressor (21), an outdoor heat exchanger (23), an outdoor expansion valve (24), and an indoor heat exchanger (27), and performing a supercritical refrigeration cycle in which a high pressure is a supercritical pressure or higher; and a controller (40) for controlling a plurality of objects of control including at least the compressor (21) and the outdoor expansion valve (24). The controller (40) concurrently controls the plurality of objects of control, thereby concurrently controlling a predetermined physical value as an index of an ability of the refrigeration apparatus, and the high pressure of the refrigeration cycle.

Abstract: An air conditioner includes a heat-exchanger positioned in an outdoor unit and configured to conduct heat-exchange between air provided from outside of the outdoor unit and a refrigerant. The air conditioner also includes a fan configured to generate a flow of the air that is from the heat-exchanger to an outlet of the outdoor unit. The air conditioner further includes a driving unit configured to provide a driving force to the fan. In addition, the air conditioner includes a first member positioned in the flow of the air generated by the fan and a second member configured to guide a flow of the air to reduce collision between the air and the first member when the fan is operated.