Abstract: The invention relates to a process and to a unit for chemical looping oxidation-reduction combustion of a hydrocarbon feed, wherein heat exchanges are controlled through a level variation of a dense fluidized bed of active mass particles in an external heat exchanger (E1, E2), positioned on a transport line carrying particles circulating between a reduction zone (210) and an oxidation zone (200) for the particles in the chemical loop. The bed level variation is allowed through controlled application of a pressure drop on a fluidization gas outlet in the heat exchanger, said pressure drop being compensated by the level variation of an active mass particle bed in a reservoir zone provided on the particle circuit in the chemical loop.

Abstract: A combustion apparatus has a plurality of longitudinally elongated gas burners, each having a burner port on an upper end thereof. A damper is disposed to cover gas inlet ports on an upstream end of an air-fuel mixing tube portion of each of the gas burners. The damper has formed therein ventilation holes for limiting primary air. The ventilation holes overlap, and are smaller than, the gas inlet ports. The damper has #1 ventilation holes having obstacles against which the fuel gas to be ejected from the gas nozzles strike, and #2 ventilation holes without obstacles. Poor combustion such as flame lifting is restricted and combustion noises are reduced.

Abstract: Disclosed is a combustion method in which heated flue gas heats a regenerator through which a mixture of fuel and flue gas containing NOx is passed to undergo endothermic reactions that produce syngas and destroy NOx.

Abstract: According to one embodiment a gas distribution assembly is provided that includes a gas distribution duct and at least one gas regulating valve mounted on the gas distribution duct. The valve is secured to the duct by use of a support supported on the duct and attachment means for attaching the valve to the support. According to one embodiment the attachment means comprises a screw threaded into a threaded sleeve and also into a threaded hole in the body of the valve. The support includes a through hole through which the sleeve passes and the sleeve includes a flange at one end that rests on the support in an area that surrounds the through hole. An end of the sleeve opposite the flange resides adjacent the threaded hole in the body of the valve.

Abstract: A method and an apparatus for reducing airflow leakage between a combustor liner and a rail of a heat shield mounted to an inner surface of the combustor liner. The method comprises locally deforming the combustor liner in sealing engagement with the rail by applying a pressure on the outer surface of the combustor liner over the rail of the heat shield. A tool, such as a sealing clip, may be mounted in pressing engagement with the outer surface of the combustor liner to apply forces locally on the liner over the rail of the heat shield.

Abstract: A gas turbine combustor achieves improved product reliability and a reduced increase in pressure loss through improvements made on a cooling characteristic and structural intensity. The structure of the gas turbine combustor includes a plurality of circularity recesses formed on a side of an annular passage on a partial area of a combustion liner that requires cooling. Each of the circularity recesses has a rectangular surface forming a convex at a right angle with respect to a flowing direction of combustion air. The circularity recesses form a rectangular triangle having an oblique surface facing upstream of the flowing direction of the combustion air.

Abstract: An assembly is provided for a turbine engine. The assembly includes a cooling tube through which a flow path extends. The assembly also includes a fuel injector, which includes a stem connected to a tip. The stem is arranged within the cooling tube. The tip extends from the cooling tube to a nozzle. The cooling tube is adapted to direct cooling air through the flow path.

Abstract: A multiple fuel capable, pre-mixed, low emission injector is provided which is particularly suited for burning high flame speed fuels. The fuel injector includes an injector body having a preliminary pre-mixing chamber, an intermediate pre-mixing chamber and a final pre-mixing chamber. A fuel distributor separates the preliminary pre-mixing chamber from the intermediate pre-mixing chamber. A guide vane separates the intermediate pre-mixing chamber from the final pre-mixing chamber.

Abstract: A fuel nozzle is provided for a gas turbine engine, and can include a pilot fuel injector having an axially-elongated, inner pilot centerbody wall and an outer pilot centerbody wall, with the axially-elongated, inner pilot centerbody wall extending from an upstream end to an annular fuel passage defining the downstream end of the pilot fuel injector. The fuel passage intersects with the inner pilot centerbody wall at a pilot fuel metering orifice. The fuel nozzle also includes a pilot fuel film surface downstream from the annular fuel passage and an annular splitter surrounding the pilot fuel injector. The annular splitter comprises, in axial sequence: an upstream section, a splitter throat having a diameter that is larger than a downstream diameter defined by the pilot fuel film surface, and a downstream diverging surface having an average diverging angle of about 24° to about 40° in relation to a centerline axis.

Abstract: A fuel nozzle including vortex generating features for use in a combustion turbine engine is provided. An array of inner pre-mixing conduits (20) extends between an inlet end (14) and an outlet end (16) of the nozzle. An array of outer pre-mixing conduits (22) may be disposed radially outwardly relative to the inner pre-mixing conduits (20). A fuel-directing tube (24) includes fuel-directing arms (26) structured to direct fuel flow into the outer pre-mixing conduits (22) to be mixed with a flow of air. The fuel-directing arms include a bluff structural arrangement (30) that may be disposed upstream of fuel injection locations (32, 32?) into the outer pre-mixing conduits (22). The proposed nozzle is believed to provide superior micro-mixing capability, such as by increasing the depth of penetration of jets of fuel in a cross-flow of air, and/or formation of vortices in a wake zone downstream from the vortex generating features.

Abstract: A method for cleaning a cavity of an oven having a steam generation device, comprising the following steps: (i) a step of mild detergent cleaning, comprising (i.1) a step of applying mild detergent to the oven cavity at a predetermined cavity starting temperature (T0), and subsequently (i.2) a step of incubating the oven cavity for a predetermined incubation period of time (?tinc1) at a temperature Tact, (i.3) a step of applying steam generated by the steam generation device to the oven cavity for a steam period of time (?tsteam1) until the oven cavity reaches a temperature T1, and subsequently incubating the oven cavity for an incubation period of time (?tinc2) until the oven cavity reaches a temperature T2, and (i.4) a step of removing water and dirt from the oven cavity; and (ii) a step of steam cleaning, comprising (ii.

Abstract: A combination stove top cover and serving tray is provided. The device comprises a cover body having a planar surface that is adapted to cover the upper surface of a stove top, thereby providing a flat, clean surface upon which to place other items, or to otherwise shroud the burners of the stove top. Around the perimeter of the planar surface is a raised wall extending substantially perpendicularly upward therefrom. The raised wall has an upper edge terminating in a common plane that is offset from the planar surface. The upper edge includes a gasket affixed therearound, which comprises a non-marring material such as rubber, plastic, or similar elastomeric material. Handles are provided along opposing raised walls of the device, while the underside of the planar surface provides a recessed, flat surface. When not covering a stove top, the device may be inverted and function as a serving tray.

Abstract: Exhaust capture and containment are enhanced by means of automatic or manual side skirts, a sensitive breach detector based on interference effects, a combination of vertical and horizontal edge jets, and/or corner jets that are directed to the center diagonally from corners. Associated control functions are described.

Abstract: A radiant heating panel, for typical use as cover for interior walls and ceilings, is provided, that is manufactured in a continuous process involving at least one sheet material, a settable material and a heating element. A method of installing such a heating panel is also provided, along with an apparatus and method required to terminate the heating panel.

Abstract: A method and a heat transfer system for limiting a supply flow (qS) in a heat transfer system which includes a supply conduit (10) with a supply flow (qS) and with a supply entry temperature (TS), and at least one load circuit (2) with a load pump (20) which provides a load flow (qL) with a load entry temperature (TL) and a load exit temperature (TR). The load entry temperature (TL) is set by way of changing the supply flow (qS), wherein the supply flow (qS) is limited to a maximal flow (qS, max), taking into account at least one temperature detected in the load circuit (2).

Abstract: A portable air conditioner includes a case in which a condenser and an evaporator are integrally installed and an inlet and an outlet are formed; and an exhaust unit integrally coupled to the case and guiding air heat-exchanged with the condenser to an outdoor area, wherein the exhaust unit includes an exhaust pipe fixed to the case in one end thereof and disposed such that at least a portion thereof is inserted into the case and a shielding module fixed to the other end of the exhaust pipe and insertedly received in the case.

Abstract: A vapor separator in an embodiment is arranged between a first space and a second space, and is used to allow vapor existing in the first space to permeate the second space by making a vapor pressure in the second space lower than a vapor pressure in the first space. The vapor separator in the embodiment includes: a porous body having a first face, a second face opposite to the first face, and fine pores passing from the first face to the second face; and a soluble absorbent existing in the fine pores of the porous body.

Abstract: The present invention relates to a dehumidification system and method and, in particular, to a system and method for controlling the humidity of air in a process or location using a desiccant-coated fluid-air heat exchanger. The desiccant material adsorbs water at or above ambient temperatures during an adsorption cycle, and the resultant air stream is of a reduced humidity compared with the humidity of the supply air. The desiccant material may then be dried during a regeneration cycle through addition of heating fluid through the heat exchanger, driving water back into the vapor state with addition of latent energy of vaporization. The desiccant material may be cooled, during the adsorption cycle, through addition of cooling fluid through the heat exchanger to maintain the temperature within a range sufficient for water vapor to be removed from the stream of air.

Abstract: Operation switching units, each changing directions of a refrigerant flowing through its associated indoor unit in response to a switch from a cooling operation to a heating operation, or vice versa, are each connected with the associated indoor unit through indoor communication pipes; a gas-liquid separation unit is connected with an outdoor unit through outdoor communication pipes; and the operation switching units are connected with the gas-liquid separation unit through two intermediate communication pipes preinstalled and one intermediate communication pipe newly installed. This provides a simple and cost-effective means for upgrading a preinstalled air conditioner making a switch from cooling to heating, and vice versa, into an air conditioner that can perform a cooling operation and a heating operation in parallel with each other.

Abstract: A humidification and air cleaning apparatus including a water tank; a transparent body forming at least a portion of the water tank; a watering housing disposed in the water tank to spray water stored in the water tank; a nozzle disposed in the watering housing to spray the pumped water; an air wash inlet disposed in the water tank to receive external air into the water tank; and an air wash inlet disposed in the water tank to discharge internal air out of the water tank. During rotation, the sprayed water forms a certain trajectory and collides with an inner side surface of the visual body. Air flowing outside the water tank forms an outer main stream before passing the air wash inlet. Air passing the air wash inlet forms an inner main stream inside the water tank, which passes the trajectory of sprayed water to the discharge port.

Abstract: A system and method of measuring duct leakage in an HVAC system including an indoor unit assembly operably coupled to a processing device, wherein at least one supply air conduit, and at least one return air conduit are coupled to the indoor unit assembly by operating a blower system at a nominal airflow rate, restricting airflow in each of the at least one supply air conduits, and each of the at least one return air conduits; operating the blower system, within the indoor unit assembly, at a first airflow rate; and operating the processing device to calculate a duct leakage airflow and duct leakage measurement.

Abstract: In an embodiment, a method of testing a HVAC unit for a disconnected damper motor is provided. An outside air section of a damper assembly is closed and air is circulated through the unit. If a discharge air temperature is not substantially equal to a return air temperature, the damper motor is determined to be disconnected. Otherwise, an economizing function having a free cooling target temperature is started. An outside air temperature is compared to the free cooling target temperature. If the outside air temperature is less than the free cooling target temperature, the damper motor is determined to be disconnected if the damper motor has been commanded to fully open the outside air section. If the outside air temperature is not less than the free cooling target temperature, the damper motor is determined to be disconnected if a discharge air temperature is not substantially equal to an outside air temperature.

Abstract: A method for controlling air volume including: inputting a target air volume into the microprocessor control unit of the motor controller; starting a motor by the motor controller under a torque to enable the motor to work in a steady state; recording the rotational speed in the steady state, and establishing a functional relation formula Q=F (T, n, V) to calculate an air volume in the steady state; comparing the target air volume with the calculated air volume; re-recording a steady rotational speed after the motor falls on a new steady state under an increased or reduced torque, and recalculating the air volume in the new steady state; and repeatedly adjusting the torque until the calculated air volume is equal or equivalent to the target air volume.

Abstract: An HVAC actuator coupleable to an HVAC component is disposed in or at an insulated duct. The HVAC actuator may include a housing and a taping flange. The taping flange may be spaced from the outer surface of the duct and adjacent to an outer surface of an insulated layer of the duct when the HVAC actuator is coupled to the HVAC component, and may be configured to facilitate taping of the HVAC actuator to the outer surface of the insulating layer. It may be shaped to provide a front-facing surface that is suitable for receiving tape to provide a seal between the taping flange and the outer surface of the insulating layer. In some cases, the taping flange may extend outward from the housing around the entire perimeter of the housing. The taping flange may be formed integrally with the housing, or it formed separately and coupled to the housing.

Abstract: An overvoltage recovery circuit (ORC), a controller for an HVAC system and an HVAC system are disclosed herein. In one embodiment, the ORC includes: (1) a first supply voltage terminal connected to a first voltage supply, (2) a second supply voltage terminal connected to a second voltage supply, (3) interruption circuitry including a switch and a trip terminal connected to the second supply voltage terminal and (4) detection circuitry connected to the first supply voltage terminal and the switch of the interruption circuitry, the detection circuitry configured to operate the switch in response to an overvoltage condition at the first supply voltage terminal.

Abstract: A multi-type air conditioning device controls an evaporation temperature and a condensing temperature, depending on required capacity of an indoor unit. The air conditioning device compares a current evaporation temperature or condensing temperature with a reference value, of an evaporation temperature or an condensing temperature, corresponding to a lower limit flow rate, of a gaseous refrigerant, required for refrigerating machine oil not to accumulate in, but to flow through, the gas branch pipes, and calculates an amount of the refrigerating machine oil accumulated in a gas branch pipe which does not satisfy the lower limit flow rate. When the calculated amount exceeds a set amount, the air conditioning device performs oil collecting operation, and controls the oil collecting operation in view of a flow rate of a gaseous refrigerant in gas branch pipes.

Abstract: A ventilation system for an air conditioning system includes dampers, a heat exchange unit, and a control unit. One damper controls the flow of ambient air into the system. The other damper controls the flow of relief/exhaust air that is utilized to scavenge energy from return air from a room or space being cooled (or heated) by the air conditioning system. The ventilation system utilizes a control algorithm in the control unit to calculate, at stepped spaced apart increasing room ventilation rates, increasing CO2 concentrations in the air in the room that are below a maximum desired CO2 concentration in a room. The control algorithm permits a control unit in the ventilation system to open and close the dampers to maintain a CO2 concentration in the room that is below the desired CO2 concentration level.

Abstract: An air ventilating unit that assists in exhausting air from a building. The unit has a housing providing an opening to the exterior of the building, the housing having moveable louvers pivotally mounted in the housing with seals between the louvers and between the louvers and the housing to minimize outside air leakage when the louvers are closed. The louvers are designed to prevent them from flipping over and becoming jammed when in an open position. Once the louvers are fully open, all the louvers will stay open with minimal fan power.

Abstract: A system for maintaining a pollutant controlled workspace includes an airtight enclosure with a front access window. A set of impermeable exterior panels and a set of permeable interior panels are slidably mounted within the access window in a spaced apart relationship. Regulated either through a manual control panel or programmable controller, a fan filter unit treats a supply of source air and delivers the filtered air down into a narrow vertical airflow channel located between the exterior and interior panels. Once a suitable amount of pressure accumulates, the treated air penetrates into the workspace as a horizontal laminar flow. Any particulates present in the workspace are drawn rearward by the laminar flow and are trapped behind a multi-apertured back board. The contaminant air is then drawn from a low pressure return located behind the back board and into the fan filter unit for recirculation within the enclosure.

Abstract: A hot water storage device having a vessel includes a first section formed from a molded material and a second section formed from a molded material. An open end of the first section is sealingly engaged with an opposing open end of the second section to form the vessel. The first and second sections each have a generally cylindrical body portion and a closed end, comprising a head portion. The vessel includes a water inlet aperture molded into the first or second section and a water outlet aperture molded into the first or second section and wherein the inlet and outlet apertures are located on the body portion proximal to a tangent line between the body portion and the head portion.

Abstract: A system and method of controlling a multiple condenser air conditioning system that provides for efficient regulation of air temperature. The refrigeration system includes one or more valves whose operation is preferably controlled by programmable control logic to regulate flow through the refrigerant condenser(s) and sequentially control compressor discharge pressure and temperature in response to demands for heating or reheating of a supply air flow.

Abstract: A fault indicating circuit for an electric heater has a first branch to conduct a supply of electrical ,energy to the electrical heater and includes a temperature sensitive device to interrupt the supply of electrical energy to the electric heater when exposed to a temperature exceeding a set temperature. The fault detecting circuit has a second branch that includes at least an element of a fault indicating device. The first branch has a first resistance R1, the second branch has a second resistance R2 and the two branches are, electrically in parallel.

Abstract: A water heater with two non-condensing flues and a condensing flue(s) having a system to prevent condensation in the non-condensing flue(s). The downwardly extending first flue is connected by a 180 degree connector to an upwardly extending second flue. Between the non-condensing and the condensing flues is positioned a temperature sensor. A controller receives input from the temperature sensor and is connected to the burner to control the minimum power setting and duration so as to prevent the combustion gases from falling below a temperature at which water will condense at the temperature sensor so no condensation occurs in the first two flues. Burner power settings are minimized near a water tank setpoint to improve efficiency by increasing condensation.

Abstract: A retaining device for absorber tubes that have a metal tube and a glass cladding tube is provided. The retaining device includes a tube clamp made of two tube clamp halves, which have a main part with a retaining feature. The tube clamp surrounds the metal tube in the mounted state, and the retaining feature rests against the exterior of the metal tube. A thermal radiation shield is arranged on the interior of the main part of the tube clamp in order to reduce the loss of heat at the ends of the metal tube of the absorber tube.

Abstract: A method to control a fixed-sequence dual evaporator cooling system including providing a recurring cooling cycle cooling system wherein each recurring cooling cycle comprises first and second cooling cycles for cooling respective first and second interiors, a pump-out cycle for returning coolant to a condenser, and an idle cycle, and providing a processor to establish exceptions to the recurring cooling cycle. A step includes the processor monitoring first and second actual temperatures of the respective first and second interiors, selecting predetermined first and second control temperatures for the respective first and second interiors, and selecting a command input signal to supply to a compressor, the condenser fan, the first and second evaporator fans, and the valve of the cooling system during the recurring cooling cycle based upon the first and second actual temperatures and the predetermined first and second control temperatures to initiate the established exceptions.

Abstract: A GM cryocooler is furnished with: a first cold head including a first displacer and a first cylinder; a second cold head including a second displacer and a second cylinder and being disposed opposing the first cold head; a common drive mechanism for driving axial reciprocation of the first displacer and the second displacer; and a working gas circuit for generating between the first cold head and the second cold head a pressure differential that assists the common drive mechanism.

Abstract: In a cryogenic refrigerator, a valve switches between a flow passage of a low-pressure refrigerant gas and a flow passage of a high-pressure refrigerant gas. A motor drives the valve. The motor includes a rotor and a stator, the rotor located radially inward of the stator. A casing hermetically houses the rotor and the stator. The stator includes a back yoke and a magnetic member that acts as a magnetic path of an external magnetic field generated outside of the casing, the magnetic member located radially outward of and spaced apart from the back yoke. The magnetic member is hermetically housed in the casing.

Abstract: A heat source unit has a capacity-variable heat source-side compressor and a heat source-side heat exchanger which functions as a radiator of refrigerant. Usage units are connected to the heat source unit and have usage-side heat exchangers, respectively, which function as evaporators of refrigerant and cool an aqueous medium. An operating capacity controller controls the capacity of the heat source-side compressor so that evaporation temperature of refrigerant of each of the usage-side heat exchangers reaches a first target evaporation temperature. A decision unit calculates second target evaporation temperatures at which outlet temperatures of the aqueous medium in the usage-side heat exchangers of the respective operating usage units reach predetermined set temperatures, and decides a minimum value of the second target evaporation temperatures as the first target evaporation temperature.

Abstract: An air conditioning apparatus includes a refrigerant tank, a cryogenic liquid pump, a condensing evaporator, a compressor, a user system, a throttle valve, a first reversing valve, and a second reversing valve. It operates in two modes. In the first mode, the refrigerant in the refrigerant tank flows sequentially from the refrigerant tank, the cryogenic liquid pump, the condensing evaporator, the first reversing valve, the compressor, the second reversing valve, the user system, the first reversing valve, the second reversing valve, the condensing evaporator, the throttle valve, and back to the refrigerant tank. In the second mode, refrigerant in the refrigerant tank flows sequentially from the refrigerant tank, the cryogenic liquid pump, the condensing evaporator, the first reversing valve, the second reversing valve, the user system, the first reversing valve, the compressor, the second reversing valve, the condensing evaporator, the throttle valve, and back to the refrigerant tank.

Abstract: The invention provides a method for cooling fluid having the steps of supplying a fluid at a first temperature T1, raising the temperature of the fluid to a second temperature T2 through contact with an electric field, contacting the fluid with a heat exchanger to decrease its temperature to a third temperature T3, removing the electric field to decrease the temperature of the fluid to a fourth temperature T4, and applying a heat load to the fluid to increase the temperature of the fluid to T1. Also provided is a system for cooling fluid having a closed loop having a first region subject to an electric field, a second region in contact with a heat exchanger, a third region remote from the electric field, and a fourth region contacting a heat load.

Abstract: A cascade cold dynamic cycle refrigeration apparatus makes up cold energy with a cryogenic liquid refrigerant by boosting with a dual-stage liquid circulating pump. The temperature of the refrigerant is increased via the cold regenerator before it enters the cold consuming apparatus to provide cold and becomes a gaseous refrigerant. The gaseous refrigerant then flows through the expander to expand and generates work by reducing pressure and temperature. The gaseous refrigerant is condensed and returns to the refrigerant tank via the cold regenerator or/and a throttle valve.

Abstract: A fluid distribution unit for a two-phase cooling system can include a reservoir configured to receive a two-phase flow of dielectric coolant. A first pump can be fluidly connected to a supply line extending from the reservoir. A heat rejection loop can be fluidly connected to the reservoir. The heat rejection loop can include a heat exchanger and a second pump. The second pump can be configured to circulate a flow of single-phase liquid coolant from the reservoir, through the heat exchanger, and back to the reservoir.

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 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 system also includes a sub-cooling circuit to cool the motor cooling fluid.

Abstract: The invention relates to an adsorption module, consisting of at least one sorption unit and at least one evaporator/condenser unit, each with inlet and outlet ports for a fluid heat transfer medium, said units being in the same or separate vacuum-tight housings. According to the invention the housing is flat and can be joined to multiple flat housings in a stacked arrangement with a common steam duct.

Abstract: A heat exchanger is provided including a first manifold, a second manifold, and a plurality of heat exchange tubes arranged in spaced parallel relationship and fluidly coupled to the first manifold and the second manifold. At least one divider plate is arranged within the first manifold such that the first manifold has a fluidly distinct first chamber and second chamber and the heat exchanger has a multi-pass flow configuration. The first chamber is configured to receive at least a partially liquid refrigerant and has a length between about 20% and about 60% a length of the first manifold.

Abstract: An ejector includes a nozzle, a swirl flow generation portion, a body including a refrigerant suction port and a diffuser portion, a passage forming member, and an actuation device moving the passage forming member. A nozzle passage is defined between the nozzle and the passage forming member. A smallest passage cross-sectional area portion is provided in the nozzle passage. A swirl space that has a shape of a revolution and is coaxial with the nozzle, and a refrigerant inflow passage through which the refrigerant flows into the swirl space are defined in the swirl flow generation portion. The ejector further includes an area adjustment device that changes the passage cross-sectional area of the refrigerant inflow passage. According to this, an efficiency of energy conversion in the nozzle passage can be improved.

Abstract: An actuation method of a refrigerating machine (10) provided with an economizer apparatus (16) and including an auxiliary laminating member (18) having the opening adjustable for modulating a tapping flow rate of refrigerating fluid flowing through the economizer apparatus (16) including a checking phase of the value of the condensing temperature (Tc) compared to a first threshold value (Tc-max); a first adjustment phase of the opening of the auxiliary laminating member (18) in order to keep the temperature of said tapping flow rate at the entrance of the compressor (15) of the refrigerating machine (10) substantially equal to a predetermined overheating value, if the condensing temperature (Tc) is lower than the first threshold value (Tc-max); a second adjustment phase of the opening of the auxiliary laminating member (18) depending on the value of the condensing temperature (Tc).

Abstract: An air conditioner is provided. The air conditioner, which comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way valve, an accumulator, and an oil separator, and cools or heats a room by circulating a refrigerant. The air conditioner comprises a first block which is disposed on a first channel of the refrigerant between the oil separator and the four-way valve, and the first block is modular and includes a plurality of first control parts, and a second block which is disposed on a second channel of the refrigerant between the outdoor heat exchanger and the indoor heat exchanger, and the second block is modular and includes a plurality of second control parts.

Abstract: A heat pump and a control method thereof, the control method of the heat pump which heats a heated space through heat exchange between outdoor air and a refrigerant and heat exchange between the refrigerant and circulation water, includes calculating the maximum allowable frequency of a compressor based on the temperature of the outdoor air and the heating load of the heated space, calculating the mean operating frequency of the compressor while the compressor is operated at the calculated maximum allowable frequency, recalculating the maximum allowable frequency based on a result of comparison between the mean operating frequency and the maximum allowable frequency, and operating the compressor at the recalculated maximum allowable frequency, thereby improving coefficient of performance (COP) of the heat pump.