Abstract: A unit, such as a transport refrigeration unit 12, may include a plurality of components arranged in multiple stages. At least a portion of the components 18,20 may be arranged in a serial or parallel manner. A position associated with the plurality of components may be selected to control a load on a power source, such as an engine 30. For example, a position for each of the components may be selected so as to maximize a delivery of available power from the power source to the unit. In some embodiments, one or more controllers 32,34 may measure a parameter associated with the power source and select a position for one or more of the components. In some embodiments, an economized refrigeration cycle may be used. Capacity may be staged from a single stage compression cycle or mode to a multistage compression cycle or mode, with a corresponding increase in capacity via subcooling.

Abstract: An electronic device can be provided with a housing having at least one wall defining a cavity and a flow sensor at least partially contained within the cavity. The flow sensor may be configured to detect a flow characteristic related to the flow of a fluid through a first portion of the cavity. The electronic device may also include a processor configured to alter a performance characteristic of the electronic device based on the detected flow characteristic.

Abstract: A system is provided for controlling a temperature of oil in a power-plant operable to propel a vehicle. The system includes a heat-exchanger arranged relative to the power-plant. The heat-exchanger is configured to receive the oil from the power-plant, modify the temperature of the oil, and return the modified temperature oil to the power-plant. The system also includes a valve configured to direct the oil through the heat-exchanger during a warm-up operation of the power-plant such that the temperature of the oil is increased. The valve is also configured to direct the oil to bypass the heat-exchanger during a low load operation of the power-plant such that the temperature of the oil is increased. Additionally, the valve is configured to direct the oil through the heat-exchanger during a high load operation of the power-plant such that the temperature of the oil is decreased.

Abstract: A freezing detection device to be applied to a liquid cooling apparatus including a liquid tank for storing a liquid whose freezing is to be detected and a cooling unit located inside the liquid tank to cool the liquid, the freezing detection device comprises: a temperature detecting unit located at a predetermined distance from the cooling unit; and a determining unit configured to determine whether or not the liquid has frozen around the temperature detecting unit based on an output from the temperature detecting unit, the determining unit determining whether or not the liquid has frozen around the temperature detecting unit based on whether the output from the temperature detecting unit is fluctuating or not.

Abstract: A refrigeration apparatus includes a compressor and a controller. The compressor has a casing and a compression element. Compressed refrigerant is sent out of the casing after being discharged into an internal space of the casing. An oil sump formed in the casing collects refrigerator oil. A heater heats the refrigerator oil collected. The controller controls the heater while the refrigeration apparatus is stopped so that a temperature of the refrigerator oil collected in the oil sump reaches a first oil temperature target value. The first oil temperature target value is set in order to keep a refrigerant condensation amount of the refrigerant equal to or less than an allowable condensation amount at which the concentration or viscosity of the refrigerator oil needed to lubricate the compressor can be maintained. The refrigerant condensation amount is caused by in-dome condensation at the start of operation of the refrigeration apparatus.

Abstract: A refrigerant socket includes an accommodating body and a pipeline assembly. The pipeline assembly includes a refrigerant pipe connecting to the accommodating body and having an inner section inside the accommodating body and an outer section outside the accommodating body; a switch placed at the inner section and away from a free end thereof, the switch being used to selectively allow or block a flow inside the refrigerant pipe; a refrigerant pumping pipe communicating between the free end of the inner section and the switch; and at least one joint communicates between the free end of the inner section and the switch. Therefore, even if the diameter of the refrigerant pipe does not match an air conditioner indoor unit, connection can still be made without the need of removing the original piping, thereby avoiding wasting refrigerant.

Abstract: A thermostat, of the type that employs latching relays to connect thermostat power to the various wires of the thermostat run, has a re-pulse feature that supplies latching pulses at a given interval, e.g., three hours, to ensure that the relays are in their proper state agreeing with the thermostat mode and the room temperature relative to the setpoint(s). In the case that the room air temperature is changing in a manner contrary to the current heating or cooling mode, which may indicate the latching relay has been knocked or bumped and needs to have its proper state re-established, the thermostat microprocessor issues pulses to the latching relay(s) more frequently, e.g., each 30 minutes, and the re-pulses may have a longer pulse width, e.g., increased from 20 ms to 25 ms.

Abstract: A Step Flow control device and methods therefore provide instructions to control operation of various absorption chiller components based on measured load or temperature information. Operating an absorption chiller according to Step Flow balances the flow of heat energy through the absorption chiller to increase efficiency and prevent crystallization. The control device may be integrated into various components of an absorption chiller or may be remote therefrom. In this manner, Step Flow can be used in new absorption chiller installations or be used to retrofit existing installations.

Abstract: A system and method of heat exchanger freeze protection for an HVAC system by operating an indoor unit assembly and an outdoor unit assembly in a cooling mode and operating a fan at an initial airflow, operating a temperature sensor to measure a temperature value of a heat exchanger, at the expiration of a first predetermined time period, determining whether the temperature value is less than or equal to a first temperature preset value, determining whether a current airflow multiplier is equal to a maximum airflow multiplier limit, increasing the current airflow by an airflow offset multiplier if the current airflow multiplier is less than or equal to the maximum airflow multiplier limit and the temperature value is less than or equal to the first temperature preset, and operating the fan at an increased airflow to move more air across the heat exchanger.

Abstract: A wiring configuration tool may be configured to determine a new wiring configuration for a replacement HVAC controller based, at least in part, on the existing wiring configuration for a current HVAC controller and, for example, the make and model of the replacement HVAC controller. The wiring configuration tool may be hosted by a server that provides a user interface for interacting with the user. The user may access the wiring configuration tool via a web services interface, a smart phone application or in any other suitable manner.

Abstract: A system is provided and may include a compressor functioning in a refrigeration circuit. An ambient temperature sensor may produce a signal indicative of an ambient temperature. Processing circuitry may calculate an energy efficiency rating of the refrigeration circuit and may generate a relationship of the calculated energy efficiency rating and ambient temperature. The processing circuitry may compare the calculated energy efficiency rating to a base energy efficiency rating to determine if a fault condition exists.

Abstract: A method for determining discharge pressure for a compressor operatively connected to a condenser, an expansion device, and an evaporator in a serial relationship, includes receiving information indicative of a compressor torque or compressor current; and determining a discharge pressure in response to the receiving of the information.

Abstract: There is disclosed a vehicle air conditioner which can realize a desirable outlet temperature even when a refrigerant subcool degree of a radiator varies. A controller executes a heating mode to let a refrigerant discharged from a compressor 2 radiate heat in a radiator 4, decompress the refrigerant by which heat has been radiated, and then let the refrigerant absorb heat in an outdoor heat exchanger 7, thereby heating the vehicle interior. The controller controls the compressor 2 on the basis of a radiator target pressure, and corrects the radiator target pressure in such a direction as to heighten when a target subcool degree enlarges, on the basis of the target subcool degree (the refrigerant subcool degree) of the radiator 4.

Abstract: One aspect presents an controller that comprises a control board, a microprocessor located on and electrically coupled to the control board, and a memory coupled to the microprocessor and located on and electrically coupled to the control board. The controller is configured to receive a trip signal from a refrigerant high pressure sensor and set a maximum heating % demand of the heat pump system based on the trip signal, recalculate a heating % demand based on at least one of the recalculated heating % demand or the maximum heating % demand.

Abstract: In one embodiment, a water system includes a compressor, a condenser fluidly coupled to the compressor by refrigerant tubing, a modulating motor-controlled valve configured to alter a flow of water through the condenser, an accelerometer mechanically coupled to the water system, and a water system controller. The water system controller may be configured to perform an automated anti-water hammer procedure.

Abstract: A method of interacting with a refrigeration appliance using a portable electronic device, wherein the refrigeration appliance comprises a refrigeration system comprising one or more refrigeration components and a controller adapted to control the one or more refrigeration components and wherein the portable electronic device comprises an application for interacting with the controller of the refrigeration appliance. The method comprising the steps of positioning the portable electronic device in proximity to the refrigeration appliance, establishing a wireless communication connection between the refrigeration appliance and the portable electronic device, and displaying information on the portable electronic device corresponding to the refrigeration appliance to which the portable electronic device is connected.

Abstract: The present invention relates to a cooling device (1) comprising more than one cabinet (2, 102, 202) wherein items to be cooled are placed and which are positioned separately, a compressor (5) providing the cooling cycle to be performed, and more than one valve (6, 106, 206) providing the refrigerant pumped from the compressor (5) to be determined, to which cabinet (2, 102, 202) and in which amount it will be directed.

Abstract: A touch free automatic faucet is provided. The faucet includes a faucet housing including many sensors for controlling water flow and water temperature. A processor is connected to the sensors. A first control valve assembly is connected to the processor. A second control valve assembly is connected to the processor. A power source is connected to the processor, the first control valve assembly and the second control valve assembly. Water flow and water temperature are controlled by the sensors without touching of the faucet housing.

Abstract: A rocker chiller includes a chilling tank and a baffle assembly. The baffle assembly includes a drive shaft, a baffle blade extending along a bottom of the tank and a plurality of spaced-apart and elongate baffle members extending in a radial direction from the drive shaft towards the bottom of the tank. The elongate baffle members contact the drive shaft at spaced-apart locations along the drive shaft and define a plurality of openings therebetween. The elongate baffle members are sized and shaped to push at least a majority of the carcasses laterally through the heat exchanging liquid in a direction generally orthogonal to a lengthwise forward movement of the carcasses from the first end of the tank to the second end of the tank.

Abstract: A heat pump system for a vehicle, which makes refrigerant bypass an external heat exchanger and turns off a fan mounted on the external heat exchanger when temperature of the outdoor air is lower than setting temperature and the vehicle enters into an idle state in a heat pump mode, thereby continuously operating the heat pump mode even in the below zero temperature so as to keep heating performance, reducing consumption of electrical power without needing to operate an electric heater, and preventing excessive noise of a fan when the vehicle enters into an idle state in the below zero temperature.