Abstract: An ice maker for a domestic refrigeration device with an ice-making tray having a plurality of freezing cavities, a support structure installed in the refrigeration device and rotatably supporting the ice-making tray, a rotational drive unit arranged on the support structure for driving the ice-making tray in rotation relative to the support structure, and at least one pair of electrodes arranged spaced apart from one another and having an electrical capacitance which is influenced by the contents of at least some of the freezing cavities. In addition, an electric measuring and control circuit is adapted to determine a capacitance measurement variable which is representative of the electrical capacitance of the electrode pair and to activate the rotational drive unit for rotation of the ice-making tray relative to the support structure in dependence on the fulfilment of at least one condition relating to the capacitance measurement variable.

Abstract: A controller reduces power output of an inverter of an electric drive system while a sensed temperature associated with the inverter, a sensed current output of the inverter, and parameter values of a busbar of the inverter are indicative of a predicted temperature of the busbar being greater than a threshold to maintain busbar temperature lower than the threshold. The current output of the inverter may be outputted over the busbar. The parameter values are obtainable from a thermal model of the busbar. The thermal model may be derived from testing a test version of the inverter under different drive cycles in which for each a set of information is recorded including a sensed temperature of the test inverter, a sensed current output of the test inverter, and a sensed temperature of the busbar of the test inverter.

Abstract: An image construction method and system for a heating area is provided. The method includes: obtaining an initial image according to a heating structure diagram and a building structure diagram of the heating area; segmenting the initial image according to heating attribute of the heating area to obtain a plurality of segmentation sub-graphs; performing first collection on a surface temperature of a heating pipeline according to pre-deployed surface devices corresponding to the segmentation sub-graphs, and setting first heating labels corresponding to the segmentation sub-graphs, and meanwhile, performing second collection on a regional temperature of a sub-area of the heating pipeline being located according to a pre-deployed monitoring device corresponding to the segmentation sub-graphs, and setting second heating labels; performing position and temperature analysis on a label setting result of each of the segmentation sub-graphs to obtain a heating image of the heating area.

Abstract: A guide member extends from an opening of a casing toward an internal space. The guide member guides the temperature sensor to the internal space. The detector and the lead wire of the temperature sensor are held by the guide member.

Abstract: A cooling system drains oil from low side heat exchangers to vessels and then uses compressed refrigerant to push the oil in the vessels back towards a compressor. Generally, the cooling system operates in three different modes of operation: a normal mode, an oil drain mode, and an oil return mode. During the normal mode, a primary refrigerant is cycled to cool one or more secondary refrigerants. As the primary refrigerant is cycled, oil from a compressor may mix with the primary refrigerant and become stuck in a low side heat exchanger. During the oil drain mode, the oil in the low side heat exchanger is allowed to drain into a vessel. During the oil return mode, compressed refrigerant is directed to the vessel to push the oil in the vessel back towards a compressor.

Abstract: A circulating loop for transporting refrigeration to a remote location is connected serially between a Gifford-McMahon (GM) or GM type Pulse Tube cold head and the compressor. Either high pressure gas from the compressor can flow through the remote heat station before returning to the cold head or low pressure gas can flow from the cold head to the remote heat station before returning to the compressor. A first fraction of gas, which may include all of the gas at ambient temperature, enters a counter-flow heat exchanger, is cooled by the cold head, flows to the remote load, and then returns to ambient temperature as it flows through the counter-flow heat exchanger. The high or low pressure line may have a circulation control valve that diverts a second fraction of gas to flow directly between the cold head and compressor. A controller adjusts the circulation control valve to optimize the cooling of the load.

Abstract: The present invention provides systems, methods, and articles for stress reduction and sleep promotion. A stress reduction and sleep promotion system includes at least one remote device, at least one body sensor, and at least one remote server. In other embodiments, the stress reduction and sleep promotion system includes machine learning.

Abstract: A heat transfer system that includes one or more heat exchangers and one or more variable control pumps that control flow through the one or more heat exchangers. At least one variable control pump is on the source side of the heat exchanger for controlling flow of a first circulation medium and at least one flow controlling mechanical device is on the load side of the heat exchanger for controlling flow of a second circulation medium. Sensors are used for detecting variables of the first circulation medium and the second circulation medium. At least one controller is configured to control at least one parameter of the first circulation medium or the second circulation medium by controlling at least one of the variable control pump or the flow controlling mechanical device using a feed forward control loop calculated from the detected variables to achieve control of the at least one parameter.

Abstract: A heat pump system for a vehicle includes a compressor; a four-way valve for transferring refrigerant to external or internal heat exchanger; the external heat exchanger for heat-exchanging between the external air and the refrigerant, the internal heat exchanger for heat-exchanging between the refrigerant and the air supplied to the interior of the vehicle, or for heat-exchanging between the refrigerant and the air supplied to the interior of the vehicle; an electric component cooling circuit which absorbs the heat from electric components in the vehicle, to emit same through electric component radiator, or which absorbs heat, and heat-exchanges with refrigerant/electric component coolant heat exchanger for heat-exchanging between the refrigerant and a coolant; a first expansion means for expanding the refrigerant; and a battery chiller which heat-exchanging between a battery and the refrigerant and transferring the refrigerant to the internal heat exchanger.

Abstract: A refrigeration system comprises a variable speed compressor and a first evaporator. A second evaporator is operably coupled in series with the first evaporator. A first valve is coupled to the variable speed compressor and the first evaporator. A second valve is fluidly coupled to the second evaporator, and a pressure regulator is coupled to the second valve.

Abstract: A refrigeration cycle device includes: a switching valve configured to switch between a battery mode in which refrigerant flows to a battery heat exchanger and a non-battery mode in which the refrigerant bypasses the battery heat exchanger; and a controller controlling a compressor and the switching valve. The controller includes an estimation unit configured to estimate an oil stagnation amount, which is an amount of lubricating oil accumulated in the battery heat exchanger in accordance with execution of the non-battery mode. The controller includes a determination unit configured to determine whether lubricating oil in the battery heat exchanger needs to be recovered on the basis of the oil stagnation amount. The controller includes an execution unit configured to execute an oil recovery mode for recovery of lubricating oil in the battery heat exchanger when the determination unit determines that lubricating oil needs to be recovered.

Abstract: An air conditioning device for a vehicle includes: a refrigeration cycle including a compressor, a condenser, an expansion valve, and an evaporator through which a refrigerant is sequentially flowed; a high-temperature heat medium circuit through which a high-temperature heat medium has exchanged heat with the refrigerant in the condenser is circulated; a low-temperature heat medium circuit through which a low-temperature heat medium has exchanged heat with the refrigerant in the evaporator is circulated; a connection line connecting the high-temperature heat medium circuit to the low-temperature heat medium circuit; vehicle interior heat exchangers allowed to be introduced the heat medium thereinto; and a switching unit which switches an operation state of the air conditioning device to a first mode allowing to connect the vehicle interior heat exchangers to the high-temperature heat medium circuit, a second mode allowing to connect the vehicle interior heat exchangers to the low-temperature heat medium circ

Abstract: A pneumatic cryocooler using a pneumatic motor for use in cryogenically cooling superconductors, which pneumatic cryocooler is capable of operation in strong magnetic fields.

Abstract: A vapor compression system and method for operating the vapor compression system are provided. The vapor compression system includes a first compressor, a second compressor, a condenser, and at least one check valve disposed between the first compressor and the condenser. The method provides for the transmitting of a shutdown command to at least one of the first compressor and the second compressor, at least one of the first compressor and the second compressor including a rotating shaft and a magnetic bearing, the magnetic bearing having an active mode and an inactive mode, the magnetic bearing levitating the rotating shaft in the active mode. The method further provides for the monitoring of at least one of a rotational speed of the rotating shaft and a differential pressure over the check valve for a preset time, wherein the magnetic bearing remains in the active mode at least during the preset time.

Abstract: A system includes a pressure exchanger (PX), a first heat exchanger, and a second heat exchanger. The PX is configured to receive a first fluid and a second fluid, exchange pressure between the first fluid and the second fluid, and output the first fluid and the second fluid. The first heat exchanger is configured to receive the first fluid from a first gas cooler and the second fluid from a second gas cooler, exchange first heat between the first fluid and the second fluid, and output the first fluid and the second fluid. The second heat exchanger is configured to receive heat exchanger output from the first heat exchanger and evaporator output from an evaporator, exchange second heat between the heat exchanger output and the evaporator output, and provide the heat exchanger output to the PX and the evaporator output to the compressor.

Abstract: The present invention provides systems, methods, and articles for stress reduction and sleep promotion. A stress reduction and sleep promotion system includes at least one remote device, at least one body sensor, and at least one remote server. In other embodiments, the stress reduction and sleep promotion system includes machine learning.

Abstract: An air conditioner, a heating control method of an air conditioner, and a computer readable storage medium are provided. According to the method, a refrigerant passing through an evaporator is divided by a shunting module into two flows; one flow of the refrigerant is throttled and depressurized by an enhanced vapor injection electronic expansion valve. Based on a difference between an indoor pipe temperature and an exhaust temperature of a compressor of the air conditioner, an opening degree parameter of the enhanced vapor injection electronic expansion valve is controlled to control a refrigerant output amount by the enhanced vapor injection electronic expansion valve. Thus, the refrigerant amount of the flow of refrigerant, subject to throttling and depressurizing, for exchanging heat with the other flow of refrigerant can be controlled to implement an enhanced vapor injection function.

Abstract: A refrigerator appliance is provided including a cabinet defining a chilled chamber, a door rotatably hinged to the cabinet to provide selective access to the chilled chamber, and a light sensing assembly positioned within the chilled chamber. A controller is configured to determine that the door is closed, identify light in the chilled chamber using the light sensing assembly, and provide a user notification in response to identifying the light in the chilled chamber when the door is closed.

Abstract: An object of the present disclosure is to provide a novel low-GWP mixed refrigerant. To solve this problem, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)), trifluoroethylene (HFO-1123), 1,3,3,3-tetrafluoropropene (R1234ze), and difluoromethane (R32).

Abstract: A dynamic method of maintaining a predefined sub-cooling of a refrigerant exiting a condenser by dynamic control of the circulating mass of refrigerant, by transferring the refrigerant into or towards a receiver installed in parallel with the liquid connection between the condenser and the expansion valve, as a function of the difference in temperatures between the condensation temperature of the saturation liquid and the discharge temperature from the condenser.