Abstract: An actuator in a HVAC system includes a mechanical transducer, a processing circuit, a wireless transceiver, and a power circuit. The processing circuit includes a processor and memory and is configured to operate the mechanical transducer according to a control program stored in the memory. The wireless transceiver is configured to facilitate bidirectional wireless data communications between the processing circuit and an external device. The power circuit is configured to draw power from a wireless signal received via the wireless transceiver and power the processing circuit and the wireless transceiver using the drawn power. The processing circuit is configured to use the power drawn from the wireless signal to wirelessly transmit data stored in the memory of the actuator to the external device via the wireless transceiver, wirelessly receive data from the external device via the wireless transceiver, and store the data received from the external device in the memory.

Abstract: A building management system for sharing data includes a plurality of data sources configured to expose a plurality of data points. Each data source is associated with a use identifier characterizing one or more of the data points exposed by the data source. The system further includes one or more data recipients configured to access the data points. The data recipients include building management devices and/or building management applications. The system further includes a data share manager configured to receive a selected data source from the plurality of data sources, identify the use identifier associated with the selected data source, generate and present a list of the data recipients that have the use identifier associated with the selected data source as an attribute, receive a selected data recipient from the list of data recipients, and create a data share relationship linking the selected data source with the selected data recipient.

Abstract: A heating, ventilation, and air conditioning (HVAC) system for a building includes a plurality of actuation devices operable to affect one or more variables in the building, a plurality of sensors configured to measure the variables affected by the actuation devices, and a controller. The controller is configured to operate the actuation devices to affect one or more of the measured variables by providing an actuation signal to the actuation devices and to receive sensor response signals from the sensors. The sensor response signals indicate an effect of the actuation signal on the measured variables. For each of the sensor response signals, the controller is configured to calculate a similarity metric indicating a similarity between the sensor response signal and the actuation signal. The controller is configured to automatically establish a device pairing including one of the actuation devices and one of the sensors based on the similarity metrics.

Abstract: A building management system includes one or more computer-readable storage media having a data structure, wherein the data structure comprises a plurality of vulnerabilities and a plurality of pairs, each of the plurality of pairs comprising one of a plurality of assets and one of the plurality of threat types, wherein each of the plurality of pairs is associated with one of the plurality of vulnerabilities and instructions. The instructions cause one or more processors to receive a threat, the threat comprising a particular threat type of the plurality of threat types, the threat indicating an incident affecting a risk value associated with a particular asset of the plurality of assets, identify a particular vulnerability of the data structure based on the particular threat type and the particular asset, and determine, based on the particular vulnerability and the threat, the risk value associated with the particular asset.

Abstract: A prismatic lithium ion battery cell includes a packaging having a cover sealed to a can, wherein the cover includes a reversal disk. A conductive member is disposed above the reversal disk and a power assembly is disposed within the packaging. A first terminal pad and a second terminal pad are disposed above the conductive member and respectively coupled to the power assembly. The reversal disk is configured to deflect upwards and to displace the conductive member to contact the first and second terminal pads in response to a pressure within the packaging being greater than a first predefined pressure threshold and thereby form an external short-circuit between the first and second terminal pads via the conductive member. Subsequently, a portion of the power assembly fails in response to the external short-circuit and interrupts current flow between the first and second terminal pads.

Abstract: A system for a plurality of thermostats each located in a different building in a neighborhood. Each thermostat includes a processing circuit configured to receive one or more assigned operating time slots from an analytics service and operate building equipment associated with the thermostat based on the one or more assigned operating time slots. The system further includes the analytics service. The analytics service includes a processing circuit configured to receive weather forecast data from a weather service and predict a period of time during which an energy usage peak will occur for the plurality of buildings based on the weather forecast data, determine the one or more operating time slots based on the period of time, assign the one or more operating time slots to each of the plurality of thermostats, and send the one or more assigned operating time slots to the plurality of thermostats.

Abstract: A condenser includes a shell having a vapor refrigerant inlet, a first tube bundle and a liquid refrigerant outlet. A second tube bundle is positioned in a subcooler component. The subcooler component has a center channel and at least two outer channels and conforms to the shell.

Abstract: Systems and methods for implementing an economic model predictive control (EMPC) strategy in any resource-based system include an EMPC tool. The EMPC tool is configured to present user interfaces to a client device. The EMPC tool is further configured to receive first user input including resources and subplants associated with a central plant. The EMPC tool is also configured to receive second user input including sinks and connections between central plant equipment. The EMPC tool also includes a data model extender configured to extend a data model to define new entities and/or relationships specified by user input. The EMPC tool also includes a high level EMPC algorithm configured to generate an optimization problem and an asset allocator configured to solve the resource optimization problem in order to determine optimal control decisions used to operate the central plant.

Abstract: A refrigerant leak detection system for a heating, ventilation, and air conditioning (HVAC) system includes a vessel configured to receive an air sample. The refrigerant leak detection system includes a cooling device configured to cool the vessel and a liquid detection device configured to detect liquid in the vessel. The refrigerant leak detection system further includes an actuator configured to actuate a transfer mechanism to collect the air sample in the vessel.

Abstract: A compressor and method for controlling the volume ratio of a compressor is provided. The compressor includes a an intake passage, a discharge passage and a compression mechanism, the compression mechanism being positioned to receive vapor from the intake passage and provide compressed vapor to the discharge passage. At least one opening is positioned in the compression mechanism to bypass a portion of the vapor in the compression mechanism to the discharge passage, the at least one opening being sized and positioned to automatically vary a volume ratio in the compressor in response to a varying pressure differential between the intake passage and the discharge passage.

Abstract: Systems and methods for controlling an actuator for an HVAC system are disclosed. A valve is configured to be positioned in a conduit. An actuator includes a motor configured to rotate the valve between a first position and a second position. An actuator controller identifies a condition for performing a partial stroke test of the valve. The actuator controller performs the partial stroke test for the valve. The actuator controller controls the motor to rotate the valve from the first position to a second position, and controls the motor to rotate the valve back to the first position.

Abstract: An actuator includes a housing. The housing includes a lower body. A cover assembly is coupled to the lower body. The cover assembly includes a transparent indicator disposed along a periphery of the cover assembly and adjacent to the lower body. A circuit board is disposed within the housing. The circuit board includes at least two illuminating devices disposed diagonally opposite to each other. The at least two illuminating devices illuminate the transparent indicator.

Abstract: One implementation of the present disclosure is an actuator mounting assembly. The actuator mounting assembly includes a bracket and a coupling member. The bracket defining a central opening extending therethrough. The bracket includes an actuator end and a valve end. The actuator end includes an actuator interface member. The valve end includes a plurality of legs extending away from the actuator end. The coupling member is at least partially disposed within the central opening. The coupling member includes a valve stem end configured to engage a valve stem and a driver end configured to engage an actuator drive member.

Abstract: A variety of assemblies are configured for use with an actuator. One embodiment of the present disclosure relates to an actuator that includes a housing. An output gear is disposed within the housing. An output nut is connected to the spindle such that the spindle is rotatable within the output nut to enable linear motion of the output nut. The output nut includes a connector. A spacer is selectively coupled to the connector of the output nut.

Abstract: A controller for equipment includes a communications interface, a communications protocol manager, a protocol detection manager, and an equipment controller. The communications interface connects to at least one of a serial bus and a wireless communications device. The communications protocol manager communicates via at least one of the serial bus and the wireless communications device according to a communications protocol and a predetermined parameter. The protocol detection manager causes the communications protocol manager to test for multiple communications protocols and predetermined parameters to identify a communications protocol and parameter used by at least one of the serial bus and the wireless communications device.

Abstract: An actuator is usable in an airside system, waterside system, building management system, or HVAC system. The actuator includes a housing. The housing has a socket with an interior passage that includes a male connector. The socket may extend outwardly from the housing. The actuator also includes an overmolded cable sized to fit in the interior passage and including a female connector that receives the male connector within the socket. The actuator includes a coupling device that surrounds the overmolded cable and is coupled to the socket and maintains an electrical connection between the male connector and female connector.

Abstract: An energy storage system includes a photovoltaic energy field, a stationary energy storage device, an energy converter, and a controller. The photovoltaic energy field converts solar energy into electrical energy and charges the stationary energy storage device with the electrical energy. The energy converter converts the electrical energy stored in the stationary energy storage device into AC power at a discharge rate and supplies a campus with the AC power at the discharge rate. The controller generates a cost function of the energy consumption of the campus across a time horizon which relates a cost to operate the campus to the discharge rate of the AC power supplied by the stationary energy storage device. The controller applies constraints to the cost function, determines a minimizing solution to the cost function which satisfies the constraints, and controls the energy converter.

Abstract: The present disclosure relates to a heating, ventilating, and air conditioning (HVAC) unit including a first refrigeration circuit having a first compressor and a first condenser, a second refrigeration circuit having a second compressor and a second condenser, a first fan configured to generate airflow over the first condenser, a second fan configured to generate airflow over the second condenser, an evaporator common to the first refrigeration circuit and the second refrigeration circuit, and a controller configured to control operation of the HVAC unit according to an active staging operation of a plurality of staging operations, wherein the plurality of staging operations comprises at least three stages of operation in which each of the first and second compressors individually operates in a selection of at least two compression settings and each of the first and second fans individually operates in a selection of at least two speed settings.