Abstract: An edge platform of a building communicatively coupled to a cloud system, the edge platform including one or more memory devices having instructions stored thereon and one or more processors executing the instructions causing the one or more processors to receive an event from a piece of building equipment of the building, the event indicating a data value associated with the piece of building equipment occurring at a particular time, identify contextual data of a data structure that provides a contextual description of the event, generate an enriched event by enriching the event with the contextual data, the enriched event including the data value, the particular time, and the contextual data, and communicate the enriched event to the cloud system configured to operate based on the enriched event.

Abstract: A partition wall for a heating, ventilation, and air conditioning (HVAC) system includes a frame defining a perimeter of the partition wall, and one or more panels extending within the frame. Each of the one or more panels comprises a flange configured to abut another of the one or more panels or the frame to provide a substantially air-tight engagement there between.

Abstract: A building automation system (BAS) with microservice architecture. The system includes a server platform configured to perform various operations within the building automation system. The server platform includes a microservices platform configured to execute various processes within the BAS. The microservices platform includes a plurality of nodes where each node is configured to run one or more services as separate processes. The microservices platform further includes a message bus configured to control communication between processes and an orchestration network configured to control communication between the plurality of nodes. The server platform further includes a common data model (CDM) shared between the plurality of nodes where the CDM consists of metadata of the BAS. The server platform further includes a container orchestration platform configured to manage and control the plurality of nodes.

Abstract: A vapor compression system including a motor having a housing and a shaft having an axis, the shaft urgable into rotational movement by the motor for powering a system component. A primary bearing and a secondary bearing are positioned in the housing for rotatably supporting the shaft, the primary bearing rotatably supporting the shaft during normal system operation. A first bearing stop and a second bearing stop are positioned on opposite sides of the secondary bearing for transmitting axial forces generated along the shaft for reaction by the motor housing during abnormal system operation. At least a portion of corresponding surfaces of each of the first bearing stop and the second bearing stop facing the secondary bearing have a protective overlying layer of material applied thereto.

Abstract: A controller for controlling operation of an actuator in an HVAC system is shown. The controller includes a processing circuit configured to receive, via a position sensor communicatively coupled to the actuator, a first voltage value, the first voltage value indicative of a first position of the actuator. The processing circuit is further configured to provide a control signal to the actuator to move to a second position. The processing circuit is further configured to, in response to the actuator moving to the second position, determine that the actuator is located in a different position than the second position based on a second voltage value via the position sensor. The processing circuit is further configured to automatically perform a fault correction process to calculate an updated stroke range of the actuator.

Abstract: An evaporative cooling unit includes a first V-shaped portion of a winding of microporous hollow fibers configured to receive a liquid. The evaporative cooling unit also includes a second V-shaped portion of the winding of microporous hollow fibers configured to receive the liquid, where the second V-shaped portion is coupled with the first V-shaped portion. The evaporative cooling unit also includes an internal cavity disposed between the first V-shaped portion and the second V-shaped portion.

Abstract: A diffuser system for a centrifugal compressor is provided. The diffuser system includes a nozzle base plate that defines a diffuser gap, support blocks, and a drive ring rotatable relative to the support blocks. The drive ring includes cam tracks and bearing assemblies positioned proximate an outer circumference of the drive ring. The diffuser system further includes drive pins extending through the support blocks and the nozzle base plate. The first end of each drive pin includes a cam follower mounted into a cam track on the drive ring. The second end of each drive pin is coupled to a diffuser ring. Rotation of the drive ring causes axial movement of the drive pins by movement of the cam followers in the cam tracks. This results in movement of the diffuser ring to control fluid flow through the diffuser gap.

Abstract: A system includes a modulating furnace and control circuitry. The control circuitry is configured to receive a call for heating associated with a quick heat cycle. In response to the call for heating, the control circuitry is also configured to operate the modulating furnace in a quick heat operating mode for a threshold time period. Subsequent to the threshold time period, the control circuitry is also configured to operate the modulating furnace in a modulating heat operating mode.

Abstract: The present disclosure relates to a compressor having a first rotor and a second rotor disposed within a housing, where the first rotor is configured to rotate about a first axis of the housing and the second rotor is configured to rotate about a second axis of the housing. The first rotor and the second rotor engage with one another such that rotation of the first rotor and the second rotor pressurizes a vapor within the housing. The compressor includes an end plate coupled to a discharge end of the housing, where the end plate includes a variable opening configured to discharge a flow of the vapor from the housing. The end plate also includes a first movable member and a second movable member that are configured to increase or decrease a cross-sectional area of the variable opening to adjust the flow of the vapor.

Abstract: In an embodiment of the present disclosure, a filter housing system of a heating, ventilating, and air conditioning (HVAC) system includes an enclosure configured to support a filter, a connecting channel disposed within a corner of the enclosure and coupled to the enclosure, and a locking system configured to couple to the connecting channel and configured to secure the filter within the enclosure. The locking system is configured to secure the filter within the enclosure via rotation of a screw.

Abstract: The present disclosure provides systems, apparatuses, and methods for monitoring building efficiency by a heating, ventilation, and air conditioning (HVAC) system. In an aspect, an HVAC unit including a memory and a processor coupled with the memory is disclosed. The processor may be configured to establish a current building efficiency state value of a current run cycle of the HVAC system. The processor may also be configured to determine an building efficiency state deviation value based on a difference between an average building efficiency state value of a set of previous building efficiency state values and the current building efficiency state value. The processor may further be configured to determine whether the building efficiency state deviation value satisfies a building inefficiency threshold.

Abstract: Embodiments of the present disclosure are directed to an interface for a fan that includes a first bracket coupled to the fan, where the fan is configured to direct a flow of air through an opening of a duct, and the opening comprises a central axis extending therethrough, a second bracket coupled to a frame surrounding the opening of the duct, where the first bracket and the second bracket are configured to surround the opening of the duct, the second bracket is configured to support the first bracket, and the second bracket is partially radially within the first bracket relative to the central axis of the opening, and a gasket disposed between the first bracket and the second bracket, where the first bracket, the second bracket, and the gasket are configured to sealingly engage with one another without mechanical securement.

Abstract: The present disclosure relates to a method for determining an efficiency curve of a chiller that includes operating a chiller over a range of operating capacities, measuring a temperature of water entering the chiller at an initial capacity, measuring a temperature of water exiting the chiller at the initial capacity, measuring a power consumption of the chiller at the initial capacity, calculating an initial efficiency of the chiller at the initial capacity, measuring a plurality of temperatures of water entering the chiller at a plurality of capacities, measuring a plurality of temperatures of water exiting the chiller at each of the plurality of capacities, measuring a plurality of power consumptions at each of the plurality of capacities, calculating a plurality of efficiencies at each of the plurality of capacities, and generating an efficiency curve for the chiller with the initial efficiency and the plurality of efficiencies.

Abstract: A screw compressor (100), comprising a screw rotor (110) and a spool valve (120). The screw rotor (110) comprises a suction head end (111) and an exhaust tail end (112). Gas is sucked in from the suction head end (111) and compressed gas is discharged from the exhaust tail end (112). The spool valve (120) comprises a working side (125) for sealing a compression chamber of the screw rotor (110). The working side (125) comprises a spool valve head end (121) and a spool valve tail end (122) and can do a reciprocating motion along the axis direction of the screw rotor (110). When the spool valve (120) moves to a suction capacity adjusting position (240), the spool valve head end (121) is located at the inner side of the suction head end (111) of the screw rotor (110), and a suction capacity adjusting distance (D2) is formed between the spool valve head end (121) and the suction head end (111) so that the suction capacity of the screw compressor is adjusted.

Abstract: A building device including one or more memory devices configured to store instructions thereon, that, when executed by one or more processors, cause the one or more processors to implement a software gateway configured to receive one or more messages from building equipment, receive, based on the one or more messages, one or more software updates for the software gateway, wherein the one or more software updates are updates for communicating with the building equipment, communicate with the building equipment based on the one or more software updates and receive data describing the building equipment, and cause a configuration image to be generated for the software gateway based on the data describing the building equipment, the configuration image indicating a configuration of the software gateway for performing one or more gateway services.

Abstract: A chiller system includes a mechanical-cooling circuit configured to circulate a refrigerant through an evaporator of the mechanical-cooling circuit, where the evaporator is configured to cool a conditioning fluid with the refrigerant. The chiller system also includes a free-cooling circuit configured to circulate the refrigerant through a heat exchanger of the free-cooling circuit, where the heat exchanger is configured to cool the conditioning fluid with the refrigerant. The chiller system also includes a distribution header having a first inlet configured to receive the refrigerant from the mechanical-cooling circuit, a second inlet configured to receive the refrigerant from the free-cooling circuit, and an internal volume fluidly coupled to the first inlet and the second inlet. A fan coil unit of the chiller system is configured to receive the refrigerant from the internal volume of the distribution header.

Abstract: A heating, ventilation, and/or air conditioning (HVAC) unit includes a heat exchange section having a plurality of panels defining an air flow path through the heat exchange section. The air flow path includes an upstream portion and a downstream portion, the upstream portion has a first cross-sectional area, and the downstream portion has a second cross-sectional area greater than the first cross-sectional area.

Abstract: A heating, ventilation, and/or air conditioning (HVAC) unit includes a motor configured to drive a component of the HVAC unit and a jacket disposed about the motor and comprising a cavity defined by a housing of the jacket. The jacket is configured to receive a flow of working fluid and to place the working fluid in a heat exchange relationship with the motor.

Abstract: A system for cooling a hermetic motor includes a motor cooling refrigerant flow path configured to direct refrigerant from a condenser disposed along a refrigerant loop to a hermetic motor, and from the hermetic motor back to the refrigerant loop, and a housing of the hermetic motor disposed along the motor cooling refrigerant flow path and configured to receive the refrigerant from the condenser, wherein the housing of the hermetic motor comprises an annulus surrounding at least a portion of a stator of the hermetic motor, and wherein the annulus comprises a plurality of openings configured to direct refrigerant toward the stator and into a cavity of the housing of the hermetic motor.

Abstract: A heating, ventilation, and/or air conditioning (HVAC) system includes a reversible valve having an outlet configured to direct refrigerant to a reheat heat exchanger of the HVAC system. The reversible valve is further configured to be in a first configuration to direct the refrigerant through a refrigerant circuit in a first flow direction in a heating mode of the HVAC system and to be in a second configuration to direct the refrigerant through the refrigerant circuit in a second flow direction in a cooling mode of the HVAC system.