Abstract: The invention relates to an air-conditioning loop for heating, ventilation, and/or air-conditioning equipment in which a coolant circulates. The loop including a compressor comprising a coolant outlet connected to a delivery pipe and a coolant inlet connected to a suction pipe. The loop also including an internal heat exchanger which is capable of functioning at least as a condenser, and which is connected to the compressor via the delivery pipe. The loop also including an external unit which is connected to the compressor via the suction pipe and which includes at least one external heat exchanger capable of functioning at least as an evaporator, with the internal heat exchanger being connected to the external unit via a first intermediate duct comprising at least one pressure-release member. The loop includes a deicing pipe connected to the compressor and/or to the delivery pipe, as well as to the external unit.

Abstract: A refrigeration circuit is disclosed circulating a refrigerant and comprising in the direction of flow of the refrigerant a compressor (2); at least one condenser (14, 16) for rejecting heat to ambient air; an expansion device (8); and an evaporator (10). The refrigeration circuit further comprises a collecting container (12), the output of which being connected to the expansion device (8); a heat rejecting heat exchanger (4) for heat exchange of the refrigerant to a heat pump system, the output of the heat rejecting heat exchanger (4) being connected to the collecting container (12); and means (V1, V2) for connecting the heat rejecting heat exchanger (4) or at least one of the condenser(s) (14, 16) to the output of the compressor (2) depending on the availability of cooling power at the heat rejecting heat exchanger (4).

Abstract: An air conditioner is provided, which can reduce a rotation direction velocity component of air being discharged from a fan and enhance fan efficiency and installed space utilization.

Abstract: An automated system and associated method for storing items comprises a cabinet having at least one refrigerated drawer using a temperature control device and a non-temperature controlled drawer. The drawer design is such that temperature gradients throughout the drawer are minimized. Faraday cages are provided about each drawer to support separate RFID readers to monitor the items in each drawer. The temperature-controlled drawer is insulated so that adjacent non-temperature controlled drawers are not significantly affected by the temperature of the temperature-controlled drawer and they may exist at room temperature. An automatic RFID data detection system determines the temperature requirements of medical items in the temperature-controlled drawer and controls the temperature control device to maintain the required temperature. A temperature logging system for the temperature controlled drawer is provided.

Abstract: A heat exchanger includes a main core portion (6) for conducting heat exchange between an air and a refrigerant, a receiver tank (8) into which the refrigerant having passed through the main core portion flows, and a subcool core portion (10) for supercooling and liquefying a gas-liquid mixed refrigerant having passed through the receiver tank by heat exchange with the air, wherein the subcool core portion is composed of a plurality of tubes (22) arranged along a crosswise direction between left and right header tanks (20) arranged along the crosswise direction, respectively, in a state in parallel with each other and communicating with both the left and right header tanks; and fins (24) arranged between the adjacent tubes.

Abstract: A refrigerator includes a cabinet to define an outer appearance of the refrigerator and having a storage chamber therein; and a water filter device installed in the storage chamber, to purify water supplied from an external water supply source. The water filter device includes a filter unit to purify the water supplied from the water supply source, a storage tank unit to store the water purified through the filter unit, a case to accommodate the filter unit and the storage tank unit, a filter head assembly, and a water filter assembly separably coupled to the filter head assembly.

Abstract: A vehicle air-conditioning device is provided that makes it possible to avoid the occurrence of condensation at a heat exchanger, and to avoid decreases in the heat exchange efficiency of the heat exchanger caused by uneven temperature distribution in the heat exchanger itself. This vehicle air-conditioning device employs a configuration comprising: a heat exchanger that performs heat exchange between air passing through a first flow path and air flowing through a second flow path; and a switching means that alternately switches either the first flow path or the second flow path from a discharge path that discharges the air inside the vehicle toward the outside of the vehicle to an intake path that guides air from outside of the vehicle into the vehicle, and switches the other flow path from the intake path to the discharge path.

Abstract: A refrigeration system having a main circuit including a main compressor thermally coupled with a secondary or subcooling circuit. The main circuit uses a HFC blend, such as but not limited to, R125/R143A blend or R32/R125/R134A blend as a refrigerant and the subcooling circuit uses an R32 blend. Some embodiments may include more than one main compressor. Some embodiments of the secondary circuit may include more than one secondary compressor. The combined system of differing refrigerants provides increased efficiencies and reduced Global Warming Potential (GWP) over single refrigerant systems for low and medium temperature refrigeration applications.

Abstract: The invention discloses an industrial shell and tube heat exchanger for providing freezing or chilling of brine to produce slurry ice, which includes a shell and tube heat exchanger located in a horizontal position and which includes at least one tube within the shell and tube heat exchanger; and at least one rotatable spiral driven in at least the one tube, and which is adapted to move or pump the brine and slurry ice through the respective tube to ensure individual supply of brine for the production of slurry ice.

Abstract: Building cooling system involving circulation of a cooling liquid in a hydraulic circuit comprising at least one first tank (2), at least one second tank (4) in which at least part of one of its walls (4.1) are made of a porous material and at least one heat exchanger (6) connected in series through a hydraulic circuit, at least one hydraulic pump (8) placed between the first tank (2) and the heat exchanger (6), in which the second tank (4) is located outside the building, in which in which the system comprises means (10) of controlling circulation of liquid from the second tank (4) to the first tank (2), and when the system is in operation to cool the inside of the building, flow from the second tank (4) to the first tank (2) is interrupted and the hydraulic pump (8) circulates the liquid from the first tank (2) to the second tank through the heat exchanger (6), such that the second tank fills up.

Abstract: A method to control a cooling circuit, with the cooling circuit comprising at least three evaporators, which are fluid connected to the cooling circuit in a parallel connection in individual paths, with each of the paths containing one shut-off valve, through which the flow of the refrigerant, which is circulating through the specific path, can be metered or cut off, where the shut-off valves can be activated or deactivated individually, with the individual evaporators being operative when the shut-off valve located within the specific path of the individual evaporator permits fluid flow, where a maximum of two of the at least three evaporators are operative simultaneously.

Abstract: A head pressure control system may control a high side operating condition of a vapor compression system. The head pressure control system includes a vapor compression system having a compressor, condenser, expansion valve, and evaporator. The head pressure control system may also include a high side condition sensor, a low side condition sensor, a controller, and a control device. The low side condition sensor may measure and communicate a low side operating condition to the controller. The high side condition sensor may measure and communicate a high side operating condition to the controller. The controller may compare a theoretical high side operating condition to the high side operating condition, and determine a control output. The controller may communicate the control output to a control device, which may influence the high side operating condition based on the control output.

Abstract: A humidity control apparatus performs a humidification operation in which outdoor air is supplied to the inside of a room through a moisture-desorption adsorption heat exchanger serving as a condenser and room air is discharged to the outside through a moisture-absorption adsorption heat exchanger serving as an evaporator. The humidity control apparatus includes a preheat heat exchanger which, in the humidification operation, is positioned upstream of the moisture-desorption adsorption heat exchanger in the flow of outdoor air in an air passage and serves as a condenser to heat outdoor air in a refrigerant circuit, and a heat-recovery heat exchanger which, in the humidification operation, is positioned downstream of the moisture-absorption adsorption heat exchanger in the flow of room air in the air passage and serves as an evaporator to recover heat from room air in the refrigerant circuit.

Abstract: A cooling system of a first psychrometric mixture having a condensation unit capable of condensing fluid contained in this mixture by direct contact with liquid comprising this fluid, the liquid being in the condensation unit at a temperature below that of the first mixture, and an evaporation unit capable of evaporating liquid in a second psychrometric mixture having fluid, the liquid being in the evaporation unit at a temperature greater than that of the second mixture, the condensation and evaporation units being coupled by a circulation circuit of the liquid, and a regulator for regulating the liquid flow.

Abstract: Magnetothermal pump devices are provided. Such devices can operate on the principle of thermally induced switching between open and closed states of a magnetic switch to generate mechanical oscillations. Exemplary devices provided include a thermal gradient and a magnet with a Curie temperature at or within this gradient. When the soft magnet is below the Curie temperature, it has sufficient magnetic force to bind a hard magnet at the hot side of the gradient. Heating of the magnet at the hot side causes it to exceed its Curie temperature, resulting in loss of magnetic attraction. At this stage, a restorative force exceeds the magnetic force, causing the magnet to shift to the cold side of the gradient, which oscillations can be used to pump fluid. Any magnetic transition that results in a change in the vector nature of the magnetic moment of the soft magnetic material can be employed.

Abstract: An air-conditioning system includes a plurality of liquid desiccant in-ceiling units, each installed in a building for treating air in a space in the building. Dedicated outside air systems (DOAS) for providing a stream of treated outside air to the building are also disclosed.

Abstract: A cryogenic refrigeration apparatus includes a compressor, a plurality of refrigerators, and a gas line configured to connect the plurality of refrigerators to the compressor in parallel so as to circulate a working gas between each of the plurality of refrigerators and the compressor. The gas line may include a flow rate control valve capable of individually controlling a pressure drop of a flow of working gas in a corresponding one of the plurality of refrigerators. The flow rate control valve may be provided in series with the corresponding refrigerator.

Abstract: A method of controlling an air conditioning compressor in a heating ventilation and air conditioning system having a evaporator including a phase change material is presented. The method includes the steps of measuring an evaporator output air temperature, determining a state of charge value by calculating a difference between an estimated refrigerant temperature based on the evaporator output air temperature and a phase change material freeze temperature and integrating this difference over time and operating the air conditioning compressor to maintain the state of charge value between an upper and lower limit. A method of recovering braking energy in a vehicle containing a heating ventilation and air conditioning system having the evaporator including the phase change material is also presented.

Abstract: A microchannel cooling device includes a heat sink having a liquid refrigerant flow channel having a microscopic cross section and connected to a heat source thermally, and a thermoelectric element provided on the heat sink and extending parallel to a direction of extension of the liquid refrigerant flow channel.

Abstract: A plate fin includes a slit structure formed by cutting and raising a portion of the plate fin to form an opening facing a flow direction of a fluid and a waffle structure formed by bending a portion of the plate fin to form a protrusion having an angle-shaped cross section which protrudes in a stack direction and having a ridge substantially perpendicular to the air flow direction, and the waffle structure is disposed on the upstream side on the plate fins with respect to the slit structure and a slant length L1 on the upstream side of the waffle structure is smaller than a slant length L2 on the downstream side of the waffle structure.