Abstract: A heating, ventilation, air conditioning, and refrigeration (HVAC&R) system includes a compressor configured to circulate a working fluid along a working fluid circuit, a bearing disposed about a shaft of the compressor, and a fluid supply system configured to direct a portion of the working fluid from the working fluid circuit to the bearing, where the bearing is configured to discharge the portion of the working fluid toward the shaft.

Abstract: A compressor for a heating, ventilation, air conditioning, and/or refrigeration (HVAC&R) system includes an impeller having a hub, a shroud, a first blade portion extending between the hub and the shroud, and a second blade portion extending external to the shroud along a direction of extension of the first blade portion from the hub to the shroud.

Abstract: A heat exchanger includes a first section of an interior volume of the heat exchanger. The first section includes a plurality of heat exchanger tubes and is configured to direct a working fluid flow across the plurality of heat exchanger tubes from an inlet of the heat exchanger. The heat exchanger includes a second section of the interior volume, where the second section is configured to direct the working fluid to an outlet of the heat exchanger. The outlet includes a center axis extending therethrough. The second section overlaps with the center axis and the first section is offset from the center axis.

Abstract: A compressor includes a diffuser passage configured to receive refrigerant flow from an impeller of the compressor, where the diffuser passage is at least partially defined by a compressor discharge plate of the compressor. The compressor also includes a variable geometry diffuser positioned within the diffuser passage and configured to adjust a dimension of a refrigerant flow path through the diffuser passage, an actuator coupled to the variable geometry diffuser and configured to adjust a position of the variable geometry diffuser within the diffuser passage, and a controller configured to regulate operation of the actuator.

Abstract: A heating, ventilation, air conditioning, and refrigeration (HVAC&R) system includes a heat exchanger with a shell having a first pass configured to place a fluid in a heat exchange relationship with a first refrigerant and a second pass configured to place the fluid in a heat exchange relationship with a second refrigerant. The heat exchanger also includes a water box coupled to the shell and configured to direct the fluid from the first pass to the second pass. The HVAC&R system also includes a fluid mixing manifold disposed within the water box, where the fluid mixing manifold is configured to collect and mix a plurality of flows of the fluid from within the water box to generate a mixed fluid, and a sensor coupled to the fluid mixing manifold, where the sensor is configured to measure a parameter of the mixed fluid.

Abstract: A compressor includes a diffuser passage configured to receive refrigerant flow from an impeller of the compressor, where the diffuser passage is at least partially defined by a compressor discharge plate of the compressor. The compressor also includes a variable geometry diffuser positioned within the diffuser passage and configured to adjust a dimension of a refrigerant flow path through the diffuser passage, an actuator coupled to the variable geometry diffuser and configured to adjust a position of the variable geometry diffuser within the diffuser passage, and a controller configured to regulate operation of the actuator.

Abstract: A heating, ventilation, air conditioning, and refrigeration (HVAC&R) system includes a heat exchanger with a shell having a first pass configured to place a fluid in a heat exchange relationship with a first refrigerant and a second pass configured to place the fluid in a heat exchange relationship with a second refrigerant. The heat exchanger also includes a water box coupled to the shell and configured to direct the fluid from the first pass to the second pass. The HVAC&R system also includes a fluid mixing manifold disposed within the water box, where the fluid mixing manifold is configured to collect and mix a plurality of flows of the fluid from within the water box to generate a mixed fluid, and a sensor coupled to the fluid mixing manifold, where the sensor is configured to measure a parameter of the mixed fluid.

Abstract: A compressor for a heating, ventilating, air conditioning, and refrigeration (HVAC&R) system includes an impeller that has a hub defining an impeller tip, a plurality of blades coupled to the hub and defining a plurality of flow paths configured to direct a primary flow of working fluid therethrough, and a shroud coupled to the plurality of blades. The shroud includes a shroud tip disposed upstream of the impeller tip relative to a flow direction of the primary flow of working fluid through the plurality of flow paths.

Abstract: A compressor for a heating, ventilating, air conditioning, and refrigeration (HVAC&R) system includes an impeller that has a hub defining an impeller tip, a plurality of blades coupled to the hub and defining a plurality of flow paths configured to direct a primary flow of working fluid therethrough, and a shroud coupled to the plurality of blades. The shroud includes a shroud tip disposed upstream of the impeller tip relative to a flow direction of the primary flow of working fluid through the plurality of flow paths.

Abstract: A heating, ventilation, air conditioning, and refrigeration (HVAC&R) system includes a heat exchanger with a shell having a first pass configured to place a fluid in a heat exchange relationship with a first refrigerant and a second pass configured to place the fluid in a heat exchange relationship with a second refrigerant. The heat exchanger also includes a water box coupled to the shell and configured to direct the fluid from the first pass to the second pass. The HVAC&R system also includes a fluid mixing manifold disposed within the water box, where the fluid mixing manifold is configured to collect and mix a plurality of flows of the fluid from within the water box to generate a mixed fluid, and a sensor coupled to the fluid mixing manifold, where the sensor is configured to measure a parameter of the mixed fluid.

Abstract: A compressor includes a diffuser passage configured to receive refrigerant flow from an impeller of the compressor, where the diffuser passage is at least partially defined by a compressor discharge plate of the compressor. The compressor also includes a variable geometry diffuser positioned within the diffuser passage and configured to adjust a dimension of a refrigerant flow path through the diffuser passage, an actuator coupled to the variable geometry diffuser and configured to adjust a position of the variable geometry diffuser within the diffuser passage, and a controller configured to regulate operation of the actuator.

Abstract: A plate and frame heat exchanger includes a plate package having individually removable plates positioned between opposed end frame portions synchronously movable toward each other for forming a compressed plate package by a drive linkage of the plate and frame heat exchanger in response to the drive linkage being drivingly actuated in one direction by a drive unit selectively connected to the drive linkage. The end frame portions are synchronously movable away from each other for forming an uncompressed plate package such that individual plates from the plate package are removable from the plate and frame heat exchanger in response to the drive linkage of the plate and frame heat exchanger being drivingly actuated in a direction opposite the one direction by the drive unit. The drive unit is selectively separable from the plate and frame heat exchanger without disassembly of the drive linkage.