Abstract: Architectures and techniques are presented that can facilitate improved design and function of certain heating, ventilation, and air conditioning (HVAC) devices. Architectures directed to an improved evase device can be designed with rounded corners that can facilitate, e.g., mitigation of reverse flow that traditionally grows back from corners of a transition from an axial fan to a rectangular duct. Architectures directed to an improved intake device can be designed to limit intake from certain flow directions and to smoothly change flow direction, which can facilitate, e.g., reduction in noise. Architectures directed to an improved fan intake device can be designed to reduce noise without significantly reducing total pressure. Architectures directed to an improved air handler device can be designed to concurrently heat and cool air and to reduce dimensions (e.g., size, weight) that can reduce costs and mitigate shipping and installation difficulties.

Abstract: Architectures and techniques are presented that can facilitate improved design and function of certain heating, ventilation, and air conditioning (HVAC) devices. Architectures directed to an improved evase device can be designed with rounded corners that can facilitate, e.g., mitigation of reverse flow that traditionally grows back from corners of a transition from an axial fan to a rectangular duct. Architectures directed to an improved intake device can be designed to limit intake from certain flow directions and to smoothly change flow direction, which can facilitate, e.g., reduction in noise. Architectures directed to an improved fan intake device can be designed to reduce noise without significantly reducing total pressure. Architectures directed to an improved air handler device can be designed to concurrently heat and cool air and to reduce dimensions (e.g., size, weight) that can reduce costs and mitigate shipping and installation difficulties.

Abstract: Architectures and techniques are presented that can facilitate improved design and function of certain heating, ventilation, and air conditioning (HVAC) devices. Architectures directed to an improved evase device can be designed with rounded corners that can facilitate, e.g., mitigation of reverse flow that traditionally grows back from corners of a transition from an axial fan to a rectangular duct. Architectures directed to an improved intake device can be designed to limit intake from certain flow directions and to smoothly change flow direction, which can facilitate, e.g., reduction in noise. Architectures directed to an improved fan intake device can be designed to reduce noise without significantly reducing total pressure. Architectures directed to an improved air handler device can be designed to concurrently heat and cool air and to reduce dimensions (e.g., size, weight) that can reduce costs and mitigate shipping and installation difficulties.

Abstract: The LFFC technology allows for accurate measurement and metering of fluids in a HVAC system-based on parameters such as pressure, velocity, volume, particles, and temperature. A procedure in a processor allows for the calibration of the aperture devices thru various methods in real time based on the actual system performance. The fluid aperture device calibration curves can be developed in a lab environment, on calibrated flow stands and/or field calibration methods using adaptive learning software based on sensor data. The procedure can rely on calibration curves, characterizations, equations, predictive analysis, machine learning, artificial intelligence, simulation software, calibrated flow stands, duplicating environmental conditions, various sensor data and programming software executed by a processor or system software. Upstream and downstream reference points for temperature, flow, particles, and pressure can be used as additional data to auto calibrate/commission the system thru the software.

Abstract: A leafless joint apparatus that couples a housing structure to a hatch structure such as a cover or door. Similar to previous hinge apparatuses, the leafless joint apparatus can include a knuckle and a pintel or pin to facilitate pivot operations (e.g., the cover pivoting open). However, the leafless joint apparatus does not rely on leafs that attach by means of fasteners (e.g., screws or the like) and therefore can facilitate sliding operations (e.g., the cover can slide open). Thus, the leafless joint apparatus can facilitate access to an interior of the housing structure by way repositioning the hatch structure via a pivot or hinging operation or via a sliding operation that can partially or fully expose the interior of the housing structure and even, if desired, slide entirely off, decoupling from the housing structure.

Abstract: The LFFC technology allows for accurate measurement and metering of fluids in a HVAC system-based on parameters such as pressure, velocity, volume, particles, and temperature. A procedure in a processor allows for the calibration of the aperture devices thru various methods in real time based on the actual system performance. The fluid aperture device calibration curves can be developed in a lab environment, on calibrated flow stands and/or field calibration methods using adaptive learning software based on sensor data. The procedure can rely on calibration curves, characterizations, equations, predictive analysis, machine learning, artificial intelligence, simulation software, calibrated flow stands, duplicating environmental conditions, various sensor data and programming software executed by a processor or system software. Upstream and downstream reference points for temperature, flow, particles, and pressure can be used as additional data to auto calibrate/commission the system thru the software.

Abstract: A fluid flow device that can accurately and inexpensively measure a flow of a fluid can be implemented in a fan-powered unit, comprising a fan or other fluid-moving device. By accurately measuring the flow of the fluid to the fan, insights or efficiencies can be determined regarding operation of a larger system such as a heating, ventilation, and air conditioning (HVAC) system or other system. For instance, various procedures, including measuring, controlling, balancing, maintenance, prediction, or calibration procedures can leverage differential pressure measurement and/or the determined flow to the fan. As an example, current settings of the fan can be compared to historical fan settings to identify changes in fan load for a given fluid flow demand. Such can indicate changes in downstream or upstream devices, which can be used to indicate a device requires maintenance or another indicator.

Abstract: An all-inclusive fluid flow device that can variably magnify differential pressure, measure, and control a flow of a fluid is described. Various procedures, including measuring, controlling, balancing, or calibration procedures can leverage a variably magnified differential pressure measurement. Differential pressure measurements can be measured across the fluid flow device such that a first pressure measurement is taken upstream of the fluid flow device while a second pressure measurement is taken downstream of the fluid flow device. Moreover, one or more of the various pressure measurements, and in particular the downstream pressure measurement, can be performed at stagnation zone where the flow has stagnated. Such can provide significant magnification and/or turndown capabilities and the magnification can vary based on a damper position and/or apertures dimensions.

Abstract: A fluid flow device that can measure and control a flow of a fluid is described. Various procedures, including measuring, controlling, balancing, or calibration procedures can leverage differential pressure measurement. These differential pressure measurements can be measured across the fluid flow device such that a first pressure measurement is taken upstream of the fluid flow device while a second pressure measurement is taken downstream of the fluid flow device. Moreover, one or more of the various pressure measurements, and in particular the downstream pressure measurement, can be performed at stagnation zone where the flow has stagnated. Such can provide significant amplification and/or turndown capabilities.

Abstract: Architectures and techniques are presented that can facilitate improved design and function of certain air handler devices. Architectures directed to an improved air handler device can be designed to improve temperature control demands such as, e.g., concurrently heat and cool air and reducing device dimensions (e.g., size, weight) that can reduce costs and mitigate shipping and installation difficulties. Architectures directed to U-bend structures can further reduce footprint on leasable space and provide improved acoustics, service access, and reduced energy consumption and infrastructure costs.

Abstract: A leafless joint apparatus that couples a housing structure to a hatch structure such as a cover or door. Similar to previous hinge apparatuses, the leafless joint apparatus can include a knuckle and a pintel or pin to facilitate pivot operations (e.g., the cover pivoting open). However, the leafless joint apparatus does not rely on leafs that attach by means of fasteners (e.g., screws or the like) and therefore can facilitate sliding operations (e.g., the cover can slide open). Thus, the leafless joint apparatus can facilitate access to an interior of the housing structure by way repositioning the hatch structure via a pivot or hinging operation or via a sliding operation that can partially or fully expose the interior of the housing structure and even, if desired, slide entirely off, decoupling from the housing structure.

Abstract: A method/structure for remotely calibrating a product fluid flow device having one or more apertures with aggregate area Ao, where fluid flows along a fluid flow path therethrough in response to pressure differentials ?P across the apertures. Calibration can occur on a calibration device to determine a fluid flow profile for a product device. In response to a determination that the product device is installed according to a different arrangement than used during calibration, the flow profile can be updated according to the different arrangement and provided to the product device in situ.

Abstract: A leafless joint apparatus that couples an enclosure housing to an enclosure cover or door. Similar to previous hinge apparatuses, the leafless joint apparatus can include a knuckle and a pintel or pin to facilitate pivot operations (e.g., the cover pivoting open). However, the leafless joint apparatus does not rely on leafs that attach by means of fasteners (e.g., screws or the like) and therefore can facilitate sliding operations (e.g., the cover can slide open). Thus, the leafless joint apparatus can facilitate access to an interior of the enclosure by way repositioning the cover of the enclosure via a pivot or hinging operation or via a sliding operation that can partially or fully expose the interior of the enclosure and even, if desired, slide entirely off, decoupling from the enclosure housing.

Abstract: Architectures and techniques are presented that can facilitate improved design and function of certain air handler devices. Architectures directed to an improved air handler device can be designed to improve temperature control demands such as, e.g., concurrently heat and cool air and reducing device dimensions (e.g., size, weight) that can reduce costs and mitigate shipping and installation difficulties. Architectures directed to U-bend structures can further reduce footprint on leasable space and provide improved acoustics, service access, and reduced energy consumption and infrastructure costs.

Abstract: A method/structure for calibrating a product fluid flow device having one or more apertures with aggregate area Ao, where fluid flows along a fluid flow path therethrough in response to pressure differentials ?P across the apertures. Calibration is effected relative to a calibration fluid flow device having a geometry and operational parameters corresponding to those of the product fluid flow device. A piecewise curved calibration controller establishes calibration conditions and generates a discrete point calibration flow rate (dpCFR) Function by measuring at a sparse set of points in a range of interest and determining a piecewise curved mathematical representation of fluid flow through the calibration fluid flow device. Data representative of the CFR function is transferred to a product blade controller, which processes the mathematical representation, and controls fluid flow through product fluid flow device based on values extracted from the received dpCFR Function.

Abstract: Architectures and techniques are presented that can facilitate improved design and function of certain air handler devices. Architectures directed to an improved air handler device can be designed to improve temperature control demands such as, e.g., concurrently heat and cool air and reducing device dimensions (e.g., size, weight) that can reduce costs and mitigate shipping and installation difficulties. Architectures directed to U-bend structures can further reduce footprint on leasable space and provide improved acoustics, service access, and reduced energy consumption and infrastructure costs.

Abstract: An all-inclusive fluid flow device that can variably magnify differential pressure, measure, and control a flow of a fluid is described. Various procedures, including measuring, controlling, balancing, or calibration procedures can leverage a variably magnified differential pressure measurement. Differential pressure measurements can be measured across the fluid flow device such that a first pressure measurement is taken upstream of the fluid flow device while a second pressure measurement is taken downstream of the fluid flow device. Moreover, one or more of the various pressure measurements, and in particular the downstream pressure measurement, can be performed at stagnation zone where the flow has stagnated. Such can provide significant magnification and/or turndown capabilities and the magnification can vary based on a damper position and/or apertures dimensions.

Abstract: An intelligent self-balancing downstream device (e.g., air fixture or diffuser) that can obtain accurate flow measurements that can be used to perform the self-balancing in situ and during operation to satisfy a set point. The downstream device may be controllable by a single software system or network accessible locally on site or remotely off site. The downstream device can operate in a single zone or be coupled with multiple like apparatuses for multi-zone operation. It is a high turndown ratio and self-balances, which can allow for continuous commissioning with built-in fault diagnostic systems and that may be used as a supply, return, or exhaust system, or a combination thereof. The downstream device can include multi-stage airflow control systems that operate progressively based on unique actuation mechanisms and/or algorithms that allow for precise flow control and feedback to self-balance and commission the system.

Abstract: A fluid flow device that can measure and control a flow of a fluid is described. Various procedures, including measuring, controlling, balancing, or calibration procedures can leverage differential pressure measurement. These differential pressure measurements can be measured across the fluid flow device such that a first pressure measurement is taken upstream of the fluid flow device while a second pressure measurement is taken downstream of the fluid flow device. Moreover, one or more of the various pressure measurements, and in particular the downstream pressure measurement, can be performed at stagnation zone where the flow has stagnated. Such can provide significant amplification and/or turndown capabilities.

Abstract: The LFFC technology allows for accurate measurement and metering of fluids in a HVAC system-based on parameters such as pressure, velocity, volume, particles, and temperature. A procedure in a processor allows for the calibration of the aperture devices thru various methods in real time based on the actual system performance. The fluid aperture device calibration curves can be developed in a lab environment, on calibrated flow stands and/or field calibration methods using adaptive learning software based on sensor data. The procedure can rely on calibration curves, characterizations, equations, predictive analysis, machine learning, artificial intelligence, simulation software, calibrated flow stands, duplicating environmental conditions, various sensor data and programming software executed by a processor or system software. Upstream and downstream reference points for temperature, flow, particles, and pressure can be used as additional data to auto calibrate/commission the system thru the software.