Abstract: An evaporator system includes an evaporator chamber 28 having one or more heat exchanger tubes 4 passing therethrough for transmitting a fluid to be cooled through the evaporator chamber 28; and a refrigerant separator configured to separate a two-phase refrigerant into refrigerant vapour and liquid refrigerant, and having a first outlet 32 for the separated vapour refrigerant and a second outlet 30 for the separated liquid refrigerant; the first outlet 32 is arranged for supplying the vapour refrigerant into the evaporator chamber 28 at a location above at least some of the heat exchanger tubes 4, and the second outlet 30 is arranged for supplying the liquid refrigerant into the evaporator chamber 28 at a location below at least some of the heat exchanger tubes 4.

Abstract: A centrifugal compressor includes an impeller configured to drive fluid along a fluid flowpath via a plurality of discrete passages. Each of the discrete passages includes a discrete passage exit. A diffuser portion is disposed circumferentially about the impeller. The diffuser portion includes a plenum connected to each exit of the discrete passages via a plurality of diffuser inlets and an equalization plenum defined adjacent to the impeller. The equalization plenum is fluidly connected to each discrete passage exit via a corresponding slot.

Abstract: A display displays an equipment management screen in which icons indicating equipment devices and having a first display size are superimposed on a floor configuration diagram of a building at positions corresponding to installation sites of the equipment devices. A display information generator, upon detection of an operation of specifying display of a group to which the equipment device corresponding to the operated icon belongs, identifies all equipment devices belonging to the specified group, changes display sizes of icons corresponding to the identified equipment devices to a second display size larger than the first display size, displays operation buttons for implementing settings of the identified equipment devices at prescribed positions on the equipment management screen in a superimposed manner, and changes display sizes of icons corresponding to equipment devices not belonging to the specified group to a third display size smaller than the first display size.

Abstract: The present disclosure concerns a device and a method for chiller station management for providing chilled water to a load (30), a computer storage medium and a chiller station. The method for chiller station management includes: determining whether a chiller (10) with a low load exists in a chiller station and determining whether to allow to shut down one chiller (10) in the chiller station, when a certain chiller (10) in the chiller station transmits a surge risk signal; if yes, shutting down one chiller (10) in the chiller station to increase loads of other chillers (10); and if no, raising a chiller (10) outlet water temperature in the chiller station and/or lowering a cooling tower (20) outlet water temperature in the chiller station.

Abstract: A system for measuring a status of a detection device having a component transformable between a plurality of configurations includes a fiber optic cable for transmitting light. The at least one fiber optic cable defines a node arranged in communication with the component. A control system is operably coupled to the fiber optic cable such that scattered light reflected from the component and returned to the node is transmitted to the control system. The control system analyzes the scattered light to determine the configuration of the component.

Abstract: In a system for measuring a fire suppressant or fire suppression propellant quantity, the system comprising: a base (102); a top plate (106) positioned to support a tank (22) of said fire suppressant or fire suppression propellant; a plurality of springs (112) positioned between the top plate and the base to support the top plate atop the base, the plurality of springs positioned to support the top plate along a range of motion between an extended condition and a retracted condition; a first magnetic member (142) mounted to the base; a second magnetic member (140) mounted to the top plate so that a spacing between the first magnetic member and the second magnetic member decreases as the top plate moves from the extended condition to the retracted condition. At least one of the first magnetic member and the second magnetic member is a permanent magnet. A magnetic field sensor (160) is positioned to detect changes in a magnetic field associated with changes in said spacing.

Abstract: An apparatus and a method for detecting refrigerant leakage in an air source heat pump system. The method for detecting refrigerant leakage in an air source heat pump system includes the following steps in a cooling mode: S110: obtaining a running parameter of an air source heat pump system, wherein the running parameter at least includes a compressor rotational speed; S120: comparing the running parameter with a preset running parameter range; S130: updating a cumulative score when the running parameter falls within the preset running parameter range; and S140: when the cumulative score exceeds a predetermined cumulative score, determining that refrigerant leakage occurs, and when the cumulative score does not exceed the predetermined cumulative score, return to step S110.

Abstract: A container box, having: a container controller for controlling the container box, one or more pressure transducers disposed within the container box, the one or more pressure transduces operatively connected to the container box, wherein the container box is configured for monitoring pressure within the container box with the pressure transducers, the container box configured to perform an airtightness test, including: pressurizing the container box until pressure in the container box is above a first threshold; monitoring pressure in the container box to determine when pressure in the container box is proximate the first threshold; monitoring a first duration during which pressure in the contain box drops from the first threshold to a second threshold; determining whether the first duration is within an acceptable range, and when the duration is outside the acceptable range, communicating an alert to a container box monitoring implement.

Abstract: A method of assembling a compressor system includes attaching at least two pulsation damper stages to a discharge port on a compressor, and attaching additional pulsation dampening stages if additional stages are desired. A compressor and discharge system is also disclosed.

Abstract: A multi-stage refrigeration system (100) includes: a refrigeration loop (110), which includes a gas suction port of a multi-stage compressor (111), a condenser (112), a first throttling element (113), an evaporator (114) and an exhaust port of the multi-stage compressor which are sequentially connected through pipelines; an economizer branch (120), which includes an economizer (121), a second throttling element (122) and a first control valve (123), the economizer having an economizer liquid inlet connected to the condenser via the first throttling element, an economizer liquid outlet connected to the evaporator via the second throttling element, and an economizer exhaust port connected to an intermediate stage of the multi-stage compressor via a control valve; and a bypass branch (130), which is joined to the evaporator from the downstream of the second throttling element and connected to the condenser via the first throttling element, and on which a second control valve (131) is arranged.

Abstract: A system and a method for controlling temperature inside electrical and electronics systems. The method includes sensing temperature of an inverter section by a temperature sensor, the inverter section including one or more electronic components. The method also includes determining, by a microcontroller, a temperature zone based on the sensed temperature and transmit a command to an inverter based on the temperature zone. The method further includes controlling speed of a compressor by an inverter based on the command.

Abstract: According to one embodiment, a horizontal compressor comprises a container accommodating a compression mechanism unit and an electric motor unit, a first leg fixed to the container near the motor unit, a second leg fixed to an end of the container on the compression mechanism unit side, an accumulator between the legs, and a joint port in the container. The second leg includes a first support portion supporting the container in a horizontal attitude, and a second support portion supporting the container standing in a vertical attitude. The first support portion extends in a direction away from the joint port relative to the second support portion.

Abstract: A server, an apparatus and a method for determining an impact on components of a temperature-controlled unit of a vehicle. The method includes receiving information of one or more parameters associated with one or more components of a temperature-controlled unit of a vehicle. Further, the information of the one or more parameters are received in response to a change in acceleration of the vehicle. The method also includes determining an impact on the one or more components of the temperature-controlled unit due to the change in the acceleration. The method further includes transmitting a notification to a device based on the impact on the one or more components of the temperature-controlled unit.

Abstract: A method of operating an access control system including a plurality of access controls each operating as a node including: receiving a node information from one or more nodes of the access control system, the one or more nodes including an origination node and a destination node; determining one or more routes between the origination node and the destination node in response to the node information or a minimum hop distance between the originating node and the head node and a minimum hop distance between any intermediate routing node and the head node; receiving a reroute message indicating a failed node between the destination node and the origination node; and determining an alternate path from the origination node to the destination node around the failed node in response to the one or more routes.

Abstract: A method and an active commissioning system for video analytics (VA) of video surveillance are provided. The method includes capturing, using a video capture device, a video sequence and receiving, at a VA processor, a parameter set from a cloud resource, wherein the parameter set is used for video analytics. The method also includes processing the video sequence by selecting subparts of the video sequence as events, wherein the events are detected based on the parameter set, generating a visualized report using the events from the VA processor and providing the visualized report to an operator, marking, by the operator, yes/no on the events in the visualized report, generating annotations for events based on the marking, and transmitting the annotations and the events to the cloud resource for processing, wherein the cloud resource processes the annotations and events and provides the parameter set based on the processing.

Abstract: An air handling unit (AHU) system is provided and includes an AHU. The AHU includes an enclosure formed to define an inlet and at least one outlet downstream from the inlet, an air supply system to drive an air flow through the enclosure from the inlet to the outlet and a misting system operably coupled to the AHU. The misting system is configured to spray high pressure, cold water mist that includes mist droplets into a portion of the enclosure upstream from the at least one outlet whereupon heat transfer occurs directly between the mist droplets and air prior to the air reaching the outlet.

Abstract: Aspects of the invention are directed towards a system and a method of controlling temperature of different zones inside premises based on determining an effective temperature set point. One or more dynamically sensed parameters are received from a plurality of sensors strategically placed within and outside of a building. One or more static parameters corresponding to building configurations and temperature thresholds from a memory unit are retrieved. A correlation engine determines the effective temperature set point for individual VAV controller associated with a particular pre-defined zone in the building by establishing a correlation between the one or more dynamically sensed parameters and static parameters corresponding to that zone. The effective temperature setpoint is transmitted to a VAV controller for associated zone.

Abstract: A method for communicating data between Bluetooth Low Energy (BLE) devices (200, 202) in a network (100) comprising multiple nodes, the method comprising: broadcasting data from a broadcasting node (200); receiving the data at multiple receiving nodes (202); transmitting an acknowledgement (ACK) packet from each of the receiving nodes (202) to the broadcasting node (200), wherein each receiving node (202) waits for a waiting period before transmitting the ACK packet, and wherein the waiting period is a varying length of time for each receiving node (202).

Abstract: A distributor for use in a heat exchanger including a distributor body having a first end, a second end, and a hollow interior. A fluid inlet is formed at the first end and a fluid outlet includes a plurality of orifices formed in the distributor body. The fluid outlet is configured to achieve a ratio of a pressure drop across the distributor to a pressure drop across the heat exchanger between about 3 and about 7 at nominal refrigerant flowrate conditions.

Abstract: A sounder apparatus 100 includes a sounder 110 having at least two volume settings, at least one detector 120, a micro-controller wherein the micro controller is configured to receive an input signal from the at least one detector 120, and to control the volume setting of the sounder based on the input signal.