Abstract: A module for use in a cooling and heating system includes an enclosure having a number of cartridge-receiving slots and at least one cartridge interchangeably disposed in one of the slots. The cartridge contains components for producing chilled fluid. The system can include a refrigerated load that is supplied with chilled fluid from the cartridge and a heat sink to which the cartridge rejects heat. The cooling and heating system can be configured to have at least one refrigeration circuit charged with a refrigerant and including a compressor, a condenser, an expansion device, and a heat exchanger, and at least one secondary cooling circuit charged with a coolant and including the heat exchanger, and a cooling coil. Heat is transferred from the coolant to the refrigerant in the heat exchanger. The system further includes a heating circuit for transferring heat from the condenser to a heating load.

Abstract: To provide an air-conditioning apparatus capable of achieving energy saving. The air-conditioning apparatus capable of executing an oil collection mode that collects a refrigerating machine oil stagnating in heat exchangers related to heat medium into a compressor by changing a flow velocity or a flow direction of the refrigerant flowing in the heat exchangers related to heat medium depending on each operation mode.

Abstract: A heat storage device that includes a first heat storage material and a second heat storage material, both of which accumulate heat by heat exchange with a heat afferent medium, and a changeover device that selectively either performs or intercepts heat storage by the second heat storage material. Accordingly, if the absorption of heat by the first heat storage material has decreased, the changeover device changes flow of the second heat storage material so that heat may be extracted from the heat afferent medium by the second heat storage medium. Thus, when the heat afferent medium is a refrigerant, it is possible to supercool the refrigerant thereof. Furthermore, since heat is extracted from the heat afferent medium and is accumulated, accordingly it is possible to anticipate effective utilization thereof.

Abstract: To provide an air-conditioning apparatus capable of achieving energy saving. An air-conditioning apparatus controls first heat medium flow switching devices and second heat medium flow switching devices in a heating only operation mode and a cooling only operation mode such that a flow rate through which a heat medium circulates is formed between all of the heat exchangers related to heat medium and at least one of use side heat exchangers.

Abstract: Heat pumps and refrigerating machines operate optimally if the temperature difference of the connected heat sources and heat sinks is as small. If this is not the case, there are two negative effects: At a high spread, increased dissipation occurs in the condensers and evaporators. In order to increase spread, the heat return flow is frequently mixed with the heat pump flow. For this purpose, hydraulic separators and overflow valves are employed. This results in highly dissipative mixing of heat carrier medium with differing temperatures. Using a pair of intermediate storage means, the dissipation that occurs can be drastically reduced. The low spread of the heat pump is adjusted to the high spread of the remaining system. The COP of the system is substantially improved. With heat pumps, the improvement ranges from about 5% to 20%.

Abstract: A heating and air conditioning apparatus has an enclosure that defines an interior volume containing a compressor, a condenser coil, an expansion valve, an evaporator coil, a hot water coil, an evaporator fan, and a condenser fan. The compressor, the condenser coil, the expansion valve, and the evaporator coil are in communication with each other. The enclosure also has first and second input air openings and first and second output air openings. The evaporator fan draws air through the first input air opening and then through the evaporator coil and the hot water coil, and thereafter forces such air out of the enclosure through the first air outlet opening. The condenser fan draws air through the second input air opening and then through the condenser coil, and thereafter forces such air out of the enclosure through the second air outlet opening.

Abstract: This invention relates to a cooling/heating air conditioning device for regulating temperature, which pumps an airflow exhausted from a space in an air conditioning object such as inside of a room or vehicle to the external through the external heat exchanger disposed at the external of the air conditioning object such as outside of the room or vehicle so as to equalize the temperature of the fluid flowing through the internal of the external heat exchanger by means of the temperature difference between the internal and external of the air conditioning object for achieving an energy saving effect.

Abstract: A solar collector assembly comprises a plurality of heater collection tubes. A thermal enhancement manifold assembly is integrated into the solar collector assembly to enhance thermal efficiency. The enhancement manifold assembly includes a supply manifold subassembly which selectively distributes a refrigerant between at least two supply manifolds and a return manifold subassembly which distributes the refrigerant between at least two return manifolds. A thermal enhancing tube provides fluid communication between each supply manifold and respective return manifold. The thermal enhancing tubes are assembled within an interior volume of the solar heater collection tubes. Each manifold pairing is operatively governed by a respective fluid control valve. The manifold pairings alternate between an active state and an inactive state, optimizing thermal transfer between the collection tube and a refrigerant.

Abstract: A system for simultaneously producing electricity, water at a first temperature, water at a second temperature greater than the first temperature, and water at a third temperature greater than the second temperature. The system can also optionally simultaneously provide a refrigerating fluid at a first evaporation temperature, and the refrigerating fluid at a second evaporation temperature.

Abstract: A heat pump type water heating apparatus is provided that includes a refrigeration cycle circuit having a first refrigerant and water heat exchanger to perform a heat exchange between a first refrigerant and water, and a first refrigerant and second refrigerant heat exchanger to perform a heat exchange between the first refrigerant and a second refrigerant. The heat pump type water heating apparatus may also include a cascade circuit having the first refrigerant and second refrigerant heat exchanger to operate jointly with the refrigeration cycle circuit, the cascade circuit also having a second refrigerant and water heat exchanger to perform a heat exchange between the second refrigerant and water, and a water heating channel connected to the first refrigerant and water heat exchanger and the second refrigerant and water heat exchanger so water passes through the first refrigerant and water heat exchanger and then through the second refrigerant and water heat exchanger.

Abstract: An apparatus includes a mechanical refrigeration cycle arrangement having a working fluid, an evaporator, a condenser, a compressor, and an expansion device, cooperatively interconnected and containing the working fluid. The apparatus also includes a drum to receive clothes, a duct and fan arrangement configured to pass air over the evaporator, condenser and through the drum, a sensor located to sense parameters, a working fluid accumulator, and a controller coupled to the sensor, accumulator and/or compressor. The controller is operative to control collection of refrigerant during a run cycle when pressure exceeds a predetermined threshold value, control retention of the collected refrigerant when the run cycle is completed, until a subsequent run cycle, control discharge of the retained refrigerant to an evaporator or condenser when the subsequent run cycle is started, and control use of discharged refrigerant to elevate the refrigeration cycle by modifying a start condition of the refrigeration cycle.

Abstract: A water heater includes one or a plurality of heat pumps that heat tap water or return water from a hot water supply part, a circulation line that supplies hot water heated in the heat pumps to the hot water supply part, and introduces the return water from the hot water supply part to the heat pumps, an incoming water pipe that joins to between the hot water supply part in the circulation line and the heat pumps and supplies the tap water, a circulation pump that returns the return water to the heat pumps and circulates the return water through the circulation line, and a control unit that controls operation or stop of the circulation pump according to driving operation time or elapsed stop time by linking a combustion process of the heat pumps.

Abstract: An air conditioning system includes a compressor, a first heat source-side heat exchanger for heating or cooling a refrigerant, a second heat source-side heat exchanger for exchanging heat between the refrigerant and a heat delivery medium, a first utilization-side heat exchanger for performing indoor cooling by using the refrigerant cooled in the first heat source-side heat exchanger, a second utilization-side heat exchanger for performing indoor heating by using the heat delivery medium subjected to heat exchange in the second heat source-side heat exchanger, and a connection mechanism.

Abstract: The invention relates to a refrigerant circuit and a process for operation of the refrigerant circuit of an HVAC system of a vehicle, particularly an electric or hybrid vehicle. The refrigerant circuit includes a primary circuit with a compressor, a heat exchanger for heat transmission between the refrigerant and the environment, a collector, a first expansion member, a heat exchanger for supply of heat from the fresh air to be conditioned of the vehicle interior to the refrigerant and a heat exchanger arranged switched in parallel to the heat exchanger. Further, the refrigerant circuit is provided with a secondary train that extends starting from a tapping point positioned between the compressor and the heat exchanger up to a connection point and is provided with a heat exchanger for heat transmission from the refrigerant to the fresh air to be conditioned for the vehicle interior, and a subsequent control valve.

Abstract: To realize a CO2 heat pump system in which reduction in coefficient of performance of heat pump cycle is prevented by maintaining the temperature of the water supplied to the gas cooler of the CO2 heat pump below a certain temperature and raising heat source side temperature in the evaporator, and which has functions to supply a heat source not only to hot water supplying equipment but also to supply a heat source or coolness source to air conditioning equipment or others, the system comprises a low temperature water tank 6, a high temperature water tank 9 for storing high temperature water heated in a gas cooler 3, piping 10, 12 for supplying the high temperature water to hot water supplying equipment and room heating equipment respectively, a first heat exchanger 21 in which brine (water) for supplying latent heat of vaporization of CO2 refrigerant to the refrigerant in the evaporator 5 exchanges heat with heat giving fluid (fluid from which heat is withdrawn), a second heat exchanger located upstream of th

Abstract: A heat pump water heater that includes a compressor, a condenser, an expansion device, and an evaporator. The condenser is in a heat exchange relationship with a water storage tank and includes a heat exchange coil with a first section and a second section. The first section has a first flow area. The second section has a second flow area that is less than the first flow area and the second section is downstream from the first section. The compressor, the condenser, the expansion device, and the evaporator are connected in series.

Abstract: A method for increasing efficiency of a transcritical heat pump water heater system is provided, as well as the corresponding system. The refrigerant, such as CO2, is compressed to a supercritical point and passed through a gas cooler that is wrapped at least partially around a water storage tank, wherein the refrigerant transfers heat to water stored in the tank. The hot water is discharged from the storage tank proximate to a top of the tank, and cold water is introduced into the tank proximate to a bottom of the tank. The supercritical refrigerant is directed to flow through the gas cooler from a top point to a lowermost point in a flow direction such that the refrigerant exits the gas cooler proximate to the bottom of the tank at a location of the coldest water within the storage tank.

Abstract: A heat pump water heater system includes a water storage tank and a sealed heat pump cycle with a compressor, a condenser or gas cooler, an evaporator, and a refrigerant. The condenser/gas cooler is disposed in a heat exchange relationship with at least a portion of the water storage tank for heating water within the tank. The tank includes an outlet through which hot water is discharged, and a cold water inlet that is disposed so as to introduce cold water into the tank at a location of a bottommost portion of the condenser/gas cooler. The cold water introduced into the tank is not pre-heated by hot water in the tank so as to establish a thermodynamically efficient temperature differential between the cold water and hot water in the tank.

Abstract: A heat pump including a boiler is disclosed. The heat pump may include a quick-hot-water-supply tank and the boiler, which may be operated selectively based on a temperature of external air or an electric power rate per unit heat quantity.

Abstract: An inlet header (22) of a microchannel heat pump heat exchanger has a tube (34) disposed therein and extending substantially the length of the inlet header (22), with the tube (34) having a plurality of openings (36) therein. During cooling mode operation, refrigerant is caused to flow into an open end of the tube (34) and along its length to thereby flow from the plurality of openings (36) into the inlet header (22) prior to entering the microchannels (24) to thereby provide a uniform flow of two-phase refrigerant thereto. A bi-flow expansion device (41) placed at the inlet end of the tube (34) allows for the expansion of liquid refrigerant into the tube (34) during periods in which the heat exchanger operates as an evaporator and allows the refrigerant to flow directly from the header (22) and around the tube (34) during periods in which the heat exchanger operates as a condenser coil.

Abstract: The presently disclosed invention uses a heating and cooling circuit to produce both heating and cooling effects through one single air-conditioning unit. It operates in one refrigeration cycle to provide both heating and cooling effects to control the temperature in an electric vehicle's passenger compartment. It also includes a self heat-up component to prevent the outside heat exchanger from getting frozen when the outside temperature drops below 32° F.

Abstract: A duct adapter system directs air flow relative to a hybrid water heater. The duct adapter system includes a collar adapted to surround a vent of a hybrid water shroud. The collar couples to standard duct pipe to extend ductwork to a heat pump portion of the hybrid water heater. A boost fan may be included in the system for boosting air flow to or from a remote location. The duct adapter system is adapted to deliver a warm air supply to the heat pump from the remote location, or deliver the cool discharge air from the heat pump water heater to a remote location.

Abstract: A vehicle air-conditioning system (1) includes an HVAC unit (2) in which a first refrigerant evaporator (6) and a second refrigerant condenser (7) are disposed in an air channel (5) communicating with a vehicle interior space; and a heat pump cycle (3) in which a refrigerant compressor (8), a refrigerant switching device (9), a first refrigerant condenser (10) that exchanges heat with the outside air, a first expansion valve (13), and a first refrigerant evaporator (6) are connected in sequence and in which the second refrigerant condenser (7) is connected in parallel with the first refrigerant condenser (10) via the refrigerant switching device (9). An exhaust-heat recovery circuit (21) equipped with a second refrigerant evaporator (16) disposed in a ventilation channel (17) from the vehicle interior and a second expansion valve (15) is connected in parallel with the first expansion valve (13) and the first refrigerant evaporator (6) of the heat pump cycle (3).

Abstract: A closed loop geothermal system has a fluid circulation loop that includes in series: a heat pump, a ground loop heat exchanger, a tank flow center and a circulation pump. The tank flow center includes a tank, a first valve, a second valve and a tank bypass line all mounted in a common housing. The tank may include a refill inlet that opens through a top surface of the housing. A cap may be attached to close the refill inlet. The tank flow center has the regular geothermal operation configuration, a system flush configuration, and a refill configuration. The tank flow center may be elevated above the circulation pump a distance to produce a water column that is greater than a minimum cavitation avoidance head pressure for the circulation pump.

Abstract: A configuration provided with a heat source unit, an indoor unit, a circuit for a hot-water supply heat source provided with a refrigerant—refrigerant heat exchanger and throttle means for the hot-water supply heat source, and a branch unit that distributes a refrigerant flowing through the indoor unit and the circuit for hot-water supply heat source and also provided with a refrigerating cycle for air conditioning in which the indoor unit and the circuit for hot-water supply heat source are connected in parallel and connected to the heat source unit by at least two connection pipelines via the branch unit and a refrigerating cycle for hot-water supply in which a compressor for hot-water supply, a heat-medium—refrigerant heat exchanger, throttle means for hot-water supply, and the refrigerant—refrigerant heat exchanger are connected in series, in which the refrigerating cycle for air conditioning and the refrigerating cycle for hot-water supply are connected so as to exchange heat between the refrigerant for

Abstract: An air conditioner having a heat-source side unit including a compressor and a heat-source side heat exchanger, plural use-side units each having a use-side heat exchanger and an inter-unit pipe for connecting the heat-source side unit to the plural use-side units, including an auxiliary heat source unit having a water-refrigerant heat exchanger for heat-exchanging refrigerant with water, a refrigerant side of the water-refrigerant heat exchanger being selectively connectable to one of the high-pressure gas pipe and the low-pressure gas pile through one of a first change-over valve and a second change-over valve, and also connected to a liquid pipe through an expansion valve, and a controller for controlling the auxiliary heat source unit so that the water-refrigerant heat exchanger of the auxiliary heat source unit functions as an evaporator with a water side thereof serving as a heat source when some of the user-side units are under heating operation.

Abstract: A heat pump system includes a heat source unit, a discharge refrigerant communication tube, a liquid refrigerant communication tube, a gas refrigerant communication tube, a first usage unit and a second usage unit. The first usage unit has a first usage-side heat exchanger capable of functioning as a radiator of the heat-source-side refrigerant introduced from the discharge refrigerant communication tube. The first usage unit is capable of performing operation in which an aqueous medium is heated by radiation of the heat-source-side refrigerant in the first usage-side heat exchanger. The second usage unit has a second usage-side heat exchanger capable of functioning as an evaporator of the heat-source-side refrigerant introduced from the liquid refrigerant communication tube. The second usage unit is capable of performing operation in which an air medium is cooled by evaporation of the heat-source-side refrigerant in the second usage-side heat exchanger.

Abstract: A hot water supply apparatus associated with a heat pump is provided. The hot water supply apparatus may employ a cascade heat pump including a two-stage cycle to perform a hot water supply operation. Refrigerants flowing through a heat side heat exchanger and a usage side heat exchanger may be heat-exchanged with water. Thus, the hot water supply operation may be continuously performed, without a defrosting operation, and hot water supply performance and heating performance may be improved.

Abstract: Provided is a water heater, which allows efficient deposition of a scale component dissolved in water so as to reduce adhesion of the scale to a heat-transfer channel. The water heater includes: scale deposition means including a tank, an anode and a cathode provided in the tank so as to be opposed to each other, and a first power supply for applying a voltage between the anode and the cathode, the scale deposition means depositing a scale component dissolved in water retained in the tank; a heat-transfer channel provided at downstream of the scale deposition means, for guiding the water; and a heat source for heating the water by heat exchange in the heat-transfer channel, in which the scale deposition means includes oxygen-gas supplying/dissolving means for supplying an oxygen gas to a water feed pipe for feeding the water to the tank and dissolving the oxygen gas in the water.

Abstract: A pool heating system is disclosed. The pool heating system includes, in some embodiments, an immersed condenser coil. In some embodiments, the immersed condenser coil is immersed in pool of water receiving hot refrigerant gas at high pressure from an outdoor unit, transferring heat to water in the pool, condensing the gas and transmitting condensed refrigerant to the outdoor unit. The system also includes an outdoor unit. In some embodiments, the outdoor unit includes a compressor, an expansion valve, an evaporator, and a fan.

Abstract: In concurrent operation of performing a refrigeration cycle in which an outdoor heat exchanger (22) functions as a condenser, and at least one of a plurality of indoor heat exchangers (31, 41, 51) functions as a condenser, pressure difference ?P1 between a high pressure refrigerant an a refrigerant in a liquid pipe (15) is detected, and the degree of opening of an outdoor expansion valve (23) is adjusted so that the pressure difference ?P1 becomes larger than a predetermined target value.

Abstract: A heat pump-type hot water supply apparatus may be provided that includes: a refrigeration cycle circuit (including a compressor, an outdoor heat exchanger, expansion devices, and an indoor heat exchanger); a hot water supply heat exchanger connected to the refrigeration cycle circuit to use the first refrigerant discharged from the compressor for a hot water supply; a cascade heat exchanger connected to the refrigeration cycle circuit to allow the first refrigerant passing through the hot water supply heat exchanger to evaporate a second refrigerant and thereafter, to be condensed, expanded, and evaporated in the refrigeration cycle circuit; a heat storage compressor compressing the second refrigerant evaporated in the cascade heat exchanger, a heat storage tank to heat water using the second refrigerant compressed by the heat storage compressor, and a heat storage expansion device to expand the second refrigerant condensed in the heat storage tank.

Abstract: A heat pump type speed heating apparatus, comprising: a cooling cycle circuit to circulate a first refrigerant to operate air conditioning, the cooling cycle circuit including a compressor, an outdoor heat exchanger, an expansion apparatus, and an indoor heat exchanger, a hot water supply compressor to compress a second refrigerant, a hot water supply heat exchanger to condense the compressed second refrigerant and to heat water, a hot water supply expansion apparatus to expand the second refrigerant from the hot water supply heat exchanger, and a cascade heat exchanger, connected to the cooling cycle circuit, to evaporate the second refrigerant expanded at the hot water supply expansion apparatus, and the first refrigerant to undergo condensation, expansion, and evaporation in the cooling cycle circuit.

Abstract: A modular heating and cooling unit comprising an independent set of headers for each of the heating a cooling loads and the source. A bank of these modular units provides a system that is capable of incremental simultaneous heating and cooling and redundancy. Valves in the internal piping of the unit eliminate the need for valves in the headers between units. This substantially reduces the overall footprint of the unit. Because of the parallel flow between the heat exchangers and the heating and cooling load, the modules can be operated in cooling mode and heating mode in any order.

Abstract: A heat pump water heater includes a heat pump which generates a hot refrigerant and a water tank for water to be heated. The water tank includes a surrounding wall which is preferably cylindrical and a bottom portion. An inner sleeve is located in the bottom portion of the water tank, and is spaced from the bottom portion and an adjacent portion of the surrounding wall of the water tank, whereby a passageway is provided about the inner sleeve. The inner sleeve also includes an opening at a bottom thereof. A circulation system puts the heated refrigerant in a heat exchange relationship with the water in the passageway, causing heating of the water therein and, due to natural convection, movement of the heated water to a higher position in the water tank and a resultant flow of cooler water into the passageway through the bottom opening of the inner sleeve.

Abstract: An appliance includes a water heater storage tank, a heating assembly configured to heat water within the water heater storage tank, and a heat exchange device disposed within the heat storage unit in a fixed relationship relative to a position of the heating assembly. The heat exchange device includes a hollow object and a phase change material within the hollow object.

Abstract: To obtain an air-conditioning apparatus that does not make a refrigerant circulate up to an indoor unit and further can achieve energy-saving. A refrigeration cycle is configured by connecting a compressor that pressurizes a refrigerant, a four-way valve that switches a circulation path of the refrigerant, a heat source side heat exchanger that performs heat exchange, expansion valves for pressure-adjusting the refrigerant, and a plurality of intermediate heat exchangers that performs heat exchange between the refrigerant and the heat medium to heat and cool the heat medium, with piping. A heat medium circuit is configured by connecting intermediate heat exchangers, pumps that pressurize the heat medium, and a plurality of use side heat exchangers that perform heat exchange between the heat medium and the air in the indoor space, with piping.

Abstract: An efficient heat pump is disclosed, the heat content of the refrigerant flowing out of an existing condenser is reduced by sub-cooling using an additional condenser. The heat reduced during the sub-cooling phase is added to the evaporator to superheat the refrigerant during evaporation phase. Removing heat from condensation phase (which is otherwise wasted) of the refrigeration cycle and adding that heat to the evaporation phase (which requires additional heat) may enhance the efficiency of the heat pump.

Abstract: Embodiments of the invention relate to a heat pump system comprising a heat pump so arranged as to permit the taking up of thermal energy from outdoor air and the giving off of thermal energy to another medium, and an external space adapted to permit heating of the outdoor air by the use of solar radiation, the system being so arranged as to conduct the outdoor air to the heat pump via the external space. The invention is characterized in that the heat pump system comprises means for regulating the flow of the outdoor air to the external space.

Abstract: The present invention relates to a composition including 2,3,3,3-tetrafluoropropene, difluoromethane and at least one compound chosen among propane, propylene and ethylene, suitable for being used for refrigeration, air-conditioning and heating. The present invention also relates to a method for heating and/or air conditioning the passenger compartment of an automobile using a reversible cooling loop containing a refrigerant including said composition. Said method is particularly suitable when the outside temperature is lower than ?20° C. The method is also suitable for hybrid automobiles, which are designed to operate in alternation between a heat engine and an electric engine, as well as for electric vehicles.

Abstract: The present invention relates to method for heating and/or air conditioning the passenger compartment of an automobile using a reversible cooling loop containing a refrigerant including 2,3,3,30-tetrafluoropropane and at least one compound chosen from among propane, propylene and ethylene. Said method is particularly suitable when the outside temperature is lower than ?20° C. The method is also suitable for hybrid automobiles, which are designed to operate in alternation between a heat engine and an electric engine, as well as for electric vehicles. The present invention also relates to a composition including 2,3,3,3-tetrafluoropropane and at least one compound chosen from among propylene and ethylene, suitable for being used for refrigeration, air conditioning and heating.

Abstract: An improved CHP system combining a VCCHP system with an SOFC system for application as a combined CHP system wherein the compressor motor of a heat pump is powered by a portion of the electricity generated by the SOFC, and wherein the thermal output of the heat pump is increased by abstraction of heat from the SOFC exhaust. This integration allows for complementary operation of each type of system, with the benefits of improved overall fuel efficiency for the improved CHP system. The heat pump is further provided with a plurality of flow-reversing valves and an additional heat exchanger, allowing the heat pump system to be reversed and thus to operate as an air conditioning system.

Abstract: A reversible system for recovery of heat energy by sampling and transfer of calories from one or more media into one or more other media of any type. The innovation is a new principle of refrigeration operation that makes it possible—with a nonreversible plate exchanger, a reversible plate exchanger, and a finned battery on an outside air circuit—to implement the following functions: total or partial restoration of calories on the nonreversible exchanger from the outside battery or from the reversible exchanger in evaporator mode, total or partial restoration of the calories on the reversible exchanger from the outside battery, refrigeration production on the reversible exchanger with total or partial evacuation of the calories on the nonreversible exchanger and/or on the outside battery.

Abstract: A distillation column is disclosed with a folded design. The column includes a plurality of rectification zones and corresponding stripping zones Each rectification zone is linked to a heat pump or a stage of a heat pump. Overhead vapor from the top rectification zone is compressed and used to heat bottoms liquid from the bottom stripping zone. Similarly, overhead vapor from the middle rectification zone is compressed and used to heat liquid from a middle stripping zone and overhead from a lower rectification zone is compressed and used to heat liquid taken from the uppermost or top stripping zone. A single multiple stage heat pump compressor may be utilized as opposed to a plurality of heat pumps Because the heat exchanger from each rectification-stripping zone pair has a lower duty, economical stab-in heat exchangers may be utilized.

Abstract: A method for cooling and warming: a refrigerant circuit (2) with at least a compressor (5), a liquid-cooled condenser (6), a liquid-heated evaporator (7) and two outer secondary liquid-based circuits (3,4). The first of those circuits includes (3) an element (13) situated in the space which is to be cooled or warmed, and which is operative for that purpose. The second circuit (4) includes a radiator operation to cool the liquid in the circuit. The two secondary circuits (3,4) are united, during heat pump operation, to form a common single circuit so that the condenser (6) heats liquid which is supplied to the element (13), with the result that the element (13) releases heat instead of cold, without the flows in the primary refrigerant circuit (2), in the element circuit (3) or in the radiator circuit (4) being alternated/reversed. A valve controlled bypass bypasses the radiator in that circuit.

Abstract: An air conditioner and pool heater dual system, functioning as a combination air conditioner and water heater having a heat exchanger that includes a refrigerant-to-water heat exchanger, a gas compressor, and at least one evaporator coil. The dual system is capable of heating a pool and refrigerating a house simultaneously using only one compressor.

Abstract: A refrigerant circuit of a heat pump water heater has a compressor, a four-way valve, a water heat exchanger, a heat storage transfer pipe contained in a heat storage water tank, an expansion valve, and an air heat exchanger and forms a refrigerating cycle by sequentially connecting them. A water circuit of the heat pump water heater has a water inlet pipeline that supplies water to the water heat exchanger, a hot water tank, and a water outlet pipeline that allows the water heat exchanger to communicate with the hot water tank, in which water is supplied to the heat storage water tank through a heat storage water tank water feed pipe branching from the water inlet pipeline by opening a heat storage water tank water feed opening/closing valve) and the water in the heat storage water tank can be discharged through the heat storage water tank water discharge pipe (by opening a heat storage water tank water discharge opening/closing valve).

Abstract: Disclosed is an energy retriever system and methods for absorbing energy and using that energy elsewhere or converting it to other useful forms of energy or work. The energy retriever system consists of a series of components interconnected by a plurality of conduits containing a fluid. Working as a self-contained thermodynamic system, the energy retriever system allows the fluid to circulate through all of these elements. Heat added to the energy capture subsystem heats the fluid. The fluid becomes more pressurized and moves into the expansion cycle subsystem. The energy extraction subsystem transforms the thermal energy of the fluid into work, kinetic energy or thermal energy. The reservoir subsystem compresses the fluid and reintroduces it into the energy capture subsystem. One-way valves are used throughout the system to keep the flow of the fluid in one direction and separate sections of the system that contain different pressures.

Abstract: A splitter system is disclosed that produces a product stream from a mixed stream of two materials with similar boiling points. A multi-stage heat pump compressor is used in combination with a bottoms reboiler and an intermediate reboiler resulting in reduced utility consumption. The appropriately placed intermediate reboiler enables use of a lower temperature heat source relative to the bottoms reboiler heat source. As a result, a lower pressure overhead vapor stream can be used to deliver heat to both the intermediate and bottoms reboilers, thereby conserving energy. The first stage of the multi-stage heat pump compressor delivers pressurized overhead vapor to the intermediate reboiler and the second stage provides pressurized overhead vapor to the bottoms reboiler. The disclosed design and method lessens the heat pump compressor power consumption and trim condenser duty for a propylene/propane splitter system by over 20%.

Abstract: It is an object of the present invention to reduce the constraint that the density ratio is constant as small as possible, and to obtain high power recovering effect in a wide operation range. A refrigeration cycle apparatus uses carbon dioxide as refrigerant and has a compressor, an outdoor heat exchanger evaporator, an expander and an indoor heat exchanger a radiator. An injection circuit for introducing high pressure refrigerant is provided in a halfway of an expansion process of said expander.