Abstract: The disclosure discloses a variable refrigerant flow (VRF) air conditioning system with dual control over temperature and humidity and a control method thereof, in which the VRF air conditioning system includes multiple indoor machines, an outdoor machine and a controller; the outdoor machine is provided with a first connector and a second connector; each indoor machine includes an indoor throttle valve, a first heat exchanger, a second heat exchanger, a first solenoid valve, a second solenoid valve, a third solenoid valve, a temperature detector and a humidity detector; the controller controls the VRF air conditioning system by controlling the indoor throttle valve, the first solenoid valve, the second solenoid valve and the third solenoid valve in each indoor machine.

Abstract: A zone control panel that is easy and intuitive to use and to program. In some embodiments, a zone control panel may be configured to have an easy to use, single level menu structure with, for example, a configuration mode and/or a checkout mode. The configuration mode may, if present, include a number of menu screens sometimes without any sub-menu levels. Likewise, the checkout mode may, if present, include a number of menu screens sometimes without any sub-menu levels. A mode selector may be provided to select a particular mode, after which, the menu screens that correspond to the selected mode may be sequentially displayed to the user. Other features and aspects are also disclosed.

Abstract: An adsorber includes: a heat-medium pipe through which a heat medium flows; an adsorbent layer having an adsorbent that adsorbs a vapor-phase refrigerant located outside the heat-medium pipe by being cooled by the heat medium, and further desorbs the adsorbed refrigerant by being heated; and a heat-transfer member that transfers heat between the heat-medium pipe and the adsorbent. In the adsorber in which the heat-transfer member and the adsorbent are integrally formed, an adsorbent filling ratio ? is set at 70% or less when the adsorbent filling ratio ? is defined as a value obtained by dividing a filling density ? of the adsorbent filled in the adsorbent layer by a true density ?abs of particles of the adsorbent. For example, the adsorber may be suitably used for an adsorption refrigerator.

Abstract: An air moisture control system for a computer system includes a housing with an air passage and an air moisture control element with an adsorption material, which is exposed in the air passage so as to enable fluid communication towards and from the air moisture control element. The element is designed such that the adsorption material is adapted, in operation, to adsorb moisture from a first air flow flowing into the air passage, having a first temperature and a first relative humidity, and desorb moisture to a second air flow, said air flow having a second temperature at least 5° C. higher than the first temperature and a second humidity at least 3% lower than the first relative humidity.

Abstract: A heat-exchange ventilation device includes: a heater connection terminal to which an external connection heater is connected; a temperature sensor that measures a temperature of a supply air flow passing through an air supply passage; and a control unit that controls operations of an air supply fan and an air exhaust fan and turning-on and turning-off of the external connection heater based on a measurement result of the temperature sensor. The external connection heater is installed in an outdoor air-supply duct and heats a supply air flow flowing through the air supply passage into a heat exchanger. The air supply fan is operable at a plurality of intensities, and the control unit prohibits a state in which the air supply fan is operated at an intensity lower than an intensity set in advance and the external connection heater is turned on.

Abstract: An air-conditioning and hot water supplying composite system includes a heat source unit and a heat source-side heat exchanger, an indoor heat source unit, a hot water supply unit connected to the heat source unit and including a hot water supply-side heat exchanger and a hot water supply-side expansion device, and a controller that controls the heat source unit. The controller includes a mode switching unit that switches a control mode of the air-conditioning and hot water supplying composite system between a hot water supply control mode, a hot water supply preheating mode, and a condensing temperature control unit. The condensing temperature control unit determines the target condensing temperature according to a temperature of a heat medium subjected to heat exchange by the hot water supply unit, in the hot water supply control mode.

Abstract: A refrigeration device includes a first refrigeration compartment for storing refrigerated goods at a first temperature, the first refrigeration compartment including a first evaporator with a first controllable expansion valve at the refrigerant inlet of the first evaporator, and a second refrigeration compartment for storing refrigerated goods at a second temperature, the second refrigeration compartment including a second evaporator with a second controllable expansion valve at the refrigerant inlet of the second evaporator. A refrigerant outlet of the first evaporator is connected to the second controllable expansion valve at the refrigerant inlet of the second evaporator.

Abstract: An immersion cooling apparatus includes: a refrigerant tank configured to store a non-boiling fluorine-based insulating refrigerant in which an electronic device is to be immersed; a circulation passage of the fluorine-based insulating refrigerant that is located between the refrigerant tank and a refrigerant cooling device; and a sealed pump that is arranged in the circulation passage, is configured to seal a rotor shaft with an impeller and a bearing portion for the rotor shaft in a sealed case while the rotor shaft and the bearing portion are immersed in the fluorine-based insulating refrigerant, and is configured to circulate the fluorine-based insulating refrigerant between the refrigerant tank and the refrigerant cooling device.

Abstract: An air-conditioning apparatus and an air-conditioning system including a first unit including a compressor and a first heat exchanger, and a plurality of second units that each include a second heat exchanger. Each of the plurality of second units connect to the first unit via a plurality of branched pipes and a plurality of valves. The air-conditioning apparatus and air-conditioning system also include a storage unit that stores connection information indicating a relationship of connection between the plurality of second units and the plurality of branched pipes, and a control unit that detects whether the connection information includes a closed path pipe.

Abstract: The dehumidifier, according to one embodiment of the present invention, comprises: a variable compressor which varies the rotation speed of a driving shaft according to an input control signal and adjusts an amount of a refrigerant gas compressed by the rotation of the driving shaft; a condenser for liquefying the compressed refrigerant gas received from the variable compressor; a heat exchanger for cooling flown air by vaporizing the liquefied refrigerant gas, and condensing vapors of the flown air into water to remove the water by using the cooling air; a blower fan for supplying outside air to the heat exchanger by forming an air flow according to the driving speed of a blower motor; and a control unit for generating the control signal according to the input signal so as to adjust the rotation speed of the driving shaft.

Abstract: An ice-making tray according to the concept of the present invention is capable of making ice at high speed and improving the transparency of ice by providing a second tray having ice cells for storing ice-making water to be coupled, in an overlapping manner, to the upper surface of a first tray which is in contact with a refrigerant pipe. The first tray may be formed of an aluminum material, the second tray may be formed of a plastic material, and the first tray formed of an aluminum material can efficiently function as a heat exchanger of an ice-making space due to having high thermal-conductivity. In the second tray, a fixing part for fixing the ice-making tray inside the ice-making space, a shaft accommodating part for accommodating the rotation shaft of an ejector, a temperature sensor accommodating part for accommodating a temperature sensor, and an air insulating part for insulating the ice-making tray and an ice separating motor may be formed integrally.

Abstract: Embodiments of the present invention provide a method and system for dynamically controlling an appliance based on information received from a wearable device, to regulate the user's health. A wearable device is identified and configured to monitor at least one physiological aspect of the user. A controllable appliance with at least one sensor and at least one controllable setting is also identified. Health information of the user is received and utilized in generating, a user profile which comprises parameters related to the health of the user. Data from the wearable device and data from the controllable appliance is analyzed and it is determined whether the data matches the parameters related to the health of the user. If the data does not match the parameters related to the health of the user, then at least one controllable setting of the at least one controllable appliance is adjusted.

Abstract: The present invention relates to an air conditioner system for a vehicle includes an air-cooled condenser mounted between a water-cooled condenser and an expansion valve to exchange heat of refrigerant discharged from the water-cooled condenser with air in order to further cool the refrigerant even though temperature of the refrigerant rises due to temperature rise of coolant supplied to the water-cooled condenser, thereby enhancing cooling performance because the refrigerant flows into an internal heat exchanger due to a drop in temperature of the refrigerant, preventing a temperature rise of the refrigerant discharged from the compressor because temperature of the refrigerant flowing into the compressor drops, and enhancing durability and stability of the air conditioner system.

Abstract: An expansion valve includes a main body including a first valve chamber having a first opening communicating with a first pipe, a second valve chamber having a second opening communicating with a second pipe, and a valve hole connecting the first valve chamber and the second valve chamber to each other, a valve body including a first main shaft, at least a part of which is provided in the first valve chamber, a second main shaft, at least a part of which is provided in the second valve chamber, and a constricted portion provided in the valve hole and connecting the first main shaft and the second main shaft to each other, a first porous member provided in a first passage between the first pipe and the valve hole, and a first shield member provided in a region of the first passage between the first pipe and the first porous member, and shields a part of a passage cross-section of the first passage.

Abstract: A heating, ventilation, and air-conditioning (HVAC) system comprises a plurality of sensors, a plurality of tandem compressor assemblies that each comprise a first compressor and a second compressor, and a controller communicatively coupled to the plurality of sensors and the plurality of tandem compressor assemblies. The controller determines an increase in a cooling demand of a structure associated with the HVAC system based on data received from at least one of the plurality of sensors. Also, the controller compares an ambient temperature outside of the structure to a first threshold. In response to determining that the ambient temperature is greater than the first threshold, the controller operates the HVAC system in a first mode and in response to determining that the ambient temperature is less than the first threshold, the controller operates the HVAC system in a second mode.

Abstract: Provided is a refrigerator. The refrigerator includes a main body including a refrigerating compartment and a freezing compartment, a machine room defined in a lower portion of the main body and in which a base is disposed, a compressor placed on the base to compress a refrigerant, a condenser placed on the base, the condenser being disposed at one side of the compressor, a valve device into which the refrigerant condensed in the condenser is introduced, the valve device including a plurality of discharge parts for discharging the refrigerant, a plurality of expansion devices connected to the plurality of discharge parts, and a plurality of evaporators including a first evaporator and a second evaporator which are connected to the plurality of expansion devices. The valve device is disposed inclined at a set angle toward one discharge part of the plurality of discharge parts with respect to a virtual line that is perpendicular to the base.

Abstract: Door alarm systems, methods, and apparatus are disclosed. A door alarm system may monitor a door of a refrigeration device and detect a failed attempt at closing the door. In response to detecting the failed attempt, the door alarm system may generate a notification of the detected, failed attempt so that remedial action may be taken.

Abstract: An air-conditioning apparatus includes a heat medium system configured to control a flow rate of the heat medium supplied to the heat source unit side heat exchanger that exchanges heat between refrigerant and the heat medium, the heat medium system having at least one system of a heat medium conveyor, a heat medium flow rate adjuster, and a heat medium flow rate control device. In the air-conditioning apparatus, the operation of each of use-side heat exchangers is changed to a cooling operation or a heating operation in accordance with a control command, and a cooling and heating concurrent operation is performed. The refrigerant is caused to flow through the heat source unit side heat exchanger in accordance with the ratio of the total cooling capacity of the use-side heat exchangers to the total heating capacity of the use-side heat exchangers.

Abstract: Systems and methods are disclosed for incorporating manual changes to the setpoint for a thermostatic controller into long-term programming of the thermostatic controller. For example, one or more of the exemplary systems compares the actual setpoint at a given time for the thermostatic controller to an expected setpoint for the thermostatic controller in light of the scheduled programming. A determination is then made as to whether the actual setpoint and the expected setpoint are the same or different. Furthermore, a manual change to the actual setpoint for the thermostatic controller is compared to previously recorded setpoint data for the thermostatic controller. At least one rule is then applied for the interpretation of the manual change in light of the previously recorded setpoint data.

Abstract: A method for controlling an economizer circuit is provided. The economizer circuit includes a valve to regulate refrigerant flow between the economizer and the compressor. The valve can be opened to engage the economizer circuit or closed to disengage the economizer circuit based on the output frequency provided to the compressor motor by a variable speed drive and an operating condition of the economizer.