Abstract: An HVAC system has a plurality of humidity sensors and a controller configured to selectively control which of the plurality of humidity sensors affects operation of the HVAC system. A method of controlling humidity includes providing a plurality of humidity sensors, assigning one of the plurality of humidity sensors as a humidity priority sensor, and affecting a humidity in response to feedback from the humidity priority sensor. A system controller for an HVAC system has an interface configured to present a plurality of humidity sensors and the system controller is configured to allow a user to select which of the plurality of humidity sensors affects operation of the HVAC system.

Abstract: A thermostatic bypass valve functions to regulate fluid temperature and also to act as a pressure relief valve using a single valve bore. The poppet valve includes a cylinder with a chamber that is thermally immersed in a source passageway such that the valve state is determined by the temperature of the fluid flowing through the source passageway as opposed to the fluid flowing through a return passageway. When the fluid in the source passageway is hot, a poppet is forced against the return passageway side of a valve seat. The poppet may either be rigidly attached to the cylinder or may slide with respect to the cylinder and be forced against the valve seat by a spring. A piston may either be rigidly attached to the housing or may be forced toward the valve seat by a spring.

Abstract: A heat pump device includes an inverter control unit outputting PWM signals to an inverter; a current detection unit detecting a current value flowing in the inverter and outputting the current value after reducing a current value having a first frequency or higher in detected current value; and a drive-signal stop unit that, when the current value output from the current detection unit is equal to or larger than an interruption level, stops output of PWM signals to the inverter. Particularly, the inverter control unit generates a voltage command value such that the voltage command value becomes a value equal to or larger than a lower limit determined according to the first frequency and generates PWM signals based on generated voltage command value and a carrier signal, thereby causing a voltage output time to the motor to be a predetermined time or longer.

Abstract: A refrigerant circuit is configured by connecting, by pipes, a compressor that compresses a heat-source-side refrigerant, a first refrigerant flow switching device, a heat-source-side heat exchanger, an expansion device, and one or more intermediate heat exchangers that exchange heat between a heat-source-side refrigerant and a heat medium that is different from the heat-source-side refrigerant. A controller performs control of pumps to drive the pumps at a specific pump capacity or higher to circulate the heat medium at a time when a heat recovery defrosting operation for causing the heat-source-side refrigerant that has been heated by the heat medium in the intermediate heat exchangers to flow into the heat-source-side heat exchanger for defrosting purposes.

Abstract: This cartridge comprises a base (10), a fixed attached piece (20), a spool (30) for controlling the temperature of the mixture of the hot and cold fluids, and a thermostatic element making it possible to move the spool along an axis. The base simultaneously delimits an outlet orifice (16) for the mixture, an inlet orifice (14) for the cold fluid that supplies, via a first distribution channel (F4), cold fluid around the spool, a passage (F3), delimited axially between the spool and the base, and an inlet orifice (15) for the hot fluid that supplies, via a second channel (C4) for distribution hot fluid around the spool, a passage (C3) delimited axially between the spool and the attached piece.

Abstract: A modular data center includes: a rack which houses an electronic device; a blower device capable of switching a flowing direction of air and configured to feed the air into the rack; a space housing a moisture absorbent; an in-rack temperature detector which detects a temperature inside the rack; a dew-point temperature detector which detects a dew-point temperature of outside air; and a controller. The controller receives signals inputted from the in-rack temperature detector and the dew-point temperature detector, and controls shutters and the blower device.

Abstract: In various implementations, an ice sensor may include heater(s), ice accumulation surface(s), and/or temperature sensor(s). During operation, heat from a heater may be provided to an ice accumulation surface and a temperature sensor(s) may determine temperature(s) of the ice accumulation surface. A determination of whether ice is present on the ice sensor may be based at least partially on the determined temperature(s).

Abstract: An integrated air conditioning system includes an indirect outdoor air cooler having a first heat exchanger for passing through indoor air as warm air, a second heat exchanger for passing through outdoor air, and piping and a pump for circulating a fluid through the first heat exchanger and the second heat exchanger; an air conditioner having an evaporator, a compressor, and a condenser, for passing the indoor air to convert to cold air; a fan for passing the outdoor air through the second heat exchanger and the condenser; and a control device. The control device sets any mode from among a first mode for performing an individual operation of the indirect outdoor air cooler, a second mode for performing an individual operation of the air conditioner, or a third mode for performing a combined operation of the air conditioner and the indirect outdoor air cooler, to a current operation mode.

Abstract: A thermal relief valve, comprising a housing having a channel, a first aperture, and a second aperture, wherein the first aperture and the second aperture are arranged symmetrically about a central axis, an actuator within the housing arranged about the axis, a first seal secured to the actuator, the first seal comprising a plurality of apertures, and having a first upwardly facing surface, and a second downwardly facing surface, a first spring arranged between the second surface of the first seal and the housing component, a second seal comprising a first upwardly facing surface and a second downwardly facing surface, the first surface of the second seal positioned on the second surface of the first seal and, a second spring arranged between the second surface of the second seal and the housing, wherein the first seal and the second seal are axially movable by the actuator along the central axis.

Abstract: Systems and methods for dehumidifying and conditioning air for a commercial building are presented. In one instance, a system involves ventilating a building at a rate higher than the required outdoor airflow rate in order to compensate for the fan being turned off when the compressor is off. Other systems and methods are presented.

Abstract: Systems and methods for preventing freeze damage to heating system pipes are provided. In some embodiments, systems for preventing freeze damage to heating system pipes that carry a liquid used to heat a heated space and that are exposed to freezing temperatures outside of the heated space are provided, the systems comprising: a hardware controller that causes the liquid to be circulated through the heating system pipes irrespective of the air temperature in the heated space.

Abstract: A system for facilitating communication of information between an information source positioned inside a refrigerated environment and a position outside the refrigerated environment comprising a transmitter for transmitting a signal including the information, a planar antenna fixed to a gasket for resonating the transmitted signal, the gasket providing a seal between the refrigerated compartment and a door providing access to the refrigerated compartment, and a receiver for receiving the signal including the information. The information could include information concerning at least one container positioned in a refrigerated environment. The system may utilize a Wi-Fi device, a Bluetooth® device, RFID device, or other devices for transmitting the information.

Abstract: An air-conditioning apparatus includes a compressor, a four-way valve, expansion means, and an indoor heat exchanger, and further includes a check valve disposed between a discharge side of the compressor and the four-way valve, a first solenoid valve disposed between the expansion means and the indoor heat exchanger, and a controller. Opening and closing of the first solenoid valve are controllable. The controller switches the four-way valve and switches the first solenoid valve between open and closed states. When a heating operation is stopped, the controller switches the four-way valve from connection for the heating operation to connection for a cooling operation, closes the first solenoid valve, and then stops the compressor.

Abstract: Atmospheric water generators, systems and methods are presented involve user authentication, recording and tracking of water volumes dispensed by respective users over periods of various lengths, controlling component noise level and timing, and cleaning, heating and cooling the collected water more efficiently. The generators may be placed in network communication with other such generators to exchange water availability information therewith, or may communicate with a central server element by way of LAN, Internet, cell tower, peer-to-peer mesh or satellite. Information is conveyed to the user regarding the amount of water they consume from the water generators, and their resulting positive impact on the environment. Water dispensing data may be shared on the users' social media accounts, or used as inputs for competitions or games in order to further engage the user. User authentication may be accomplished by way of biometrics or an RFID/NFC tag embedded in the user's water vessel.

Abstract: A method is provided for managing a flooded start of a compressor in a vapor compression system. Following an initial bump start, a determination is made as to whether working fluid in a liquid state remains in the sump of the compressor. If working fluid in a liquid state remains in the compressor sump, an additional bump start of the compressor is completed, followed by another determination as to whether working fluid in a liquid state still remains in the compressor sump. If working fluid in a liquid state remains in the compressor sump, another bump start of the compressor is initiated and the sequence repeated until no working fluid in the liquid state remains in the compressor sump. A normal start of the compressor may be initiated after determining no working fluid in the liquid state remains in the compressor sump.

Abstract: An air-conditioning apparatus includes a temperature sensor for detecting a temperature of the heat medium sent from each of the intermediate heat exchangers to each of the use-side heat exchangers, and a temperature of the heat medium that has exited each of the use-side heat exchangers, an opening degree controller for regulating a flow rate of the heat medium through each of the heat medium flow control devices, and a computing unit for computing a usage capacity of each of the indoor units from a rotation speed of the pump, an opening degree of each of the heat medium flow control devices, temperatures detected by the temperature sensors, and power consumption of each of the indoor units, and proportionally dividing the power consumption for a common portion among each of the indoor units based on the computed usage capacity and the power consumption of the common portion.

Abstract: In some examples, a wireless controller is utilized within a wireless mesh network. The wireless controller includes a control module configured to manage at least one energy device via a pneumatic pressure line based on one or more parts of an energy profile; and a network interface module configured to transmit energy data to a management server and receive the one or more parts of the energy profile from the management server.

Abstract: Provided is a driving device for an automatic ice-making machine, the driving device including: a cam gear that rotates a tray; and an operating lever that organically operates along a cam plane for an ice-cube quantity detecting arm formed at the cam gear and allows the ice-cube quantity detecting arm to rotate downward into an ice-cube storage bin, wherein a cam groove for the ice-cube quantity detecting arm is formed in the cam plane for the ice-cube quantity detecting arm of the cam gear and allows the operating level to descend so that the ice-cube quantity detecting arm rotates downward into the ice-cube storage bin, and a protrusion is formed between the cam plane for the ice-cube quantity detecting arm and the cam groove for the ice-cube quantity detecting arm and allows the operating lever to ascend so that the ice-cube quantity detecting arm that rotates downward into the ice-cube storage bin rotates upward.

Abstract: A control panel for an enclosed space, set into a cutout in the wall of the enclosed space, that can rotate at least 180 degrees so as to be accessible from either the inside or the outside of the enclosed space.

Abstract: A preconditioned air unit for supplying preconditioned air to an aircraft parked on the ground, the preconditioned air unit comprising a housing accommodating a flow duct with an air inlet for ambient air and an air outlet for connection to the parked aircraft, a blower connected with the flow duct for generation of an air flow from the air inlet toward the air outlet, at least one refrigeration system, each of which includes at least one compressor, at least one condenser, at least one expansion valve, and at least one evaporator connected in a flow circuit containing a refrigerant, and wherein the at least one evaporator interacts with the air flow in the flow duct, and at least one variable frequency driver for power supply of at least one of the at least one compressor of the at least one refrigeration system.