Abstract: A refrigeration system includes a low temperature (LT) compressor, a medium temperature (MT) compressor having a suction side fluidly coupled with a discharge side of the LT compressor, a low temperature evaporator, and a medium temperature evaporator. Refrigerant from the low temperature evaporator is returned to a suction side of the LT compressor and refrigerant from the medium temperature evaporator is returned to a connection point downstream of the discharge side of the LT compressor and upstream of the suction side of the MT compressor. The refrigeration system performs a defrost cycle by directing warm refrigerant from the suction side of the MT compressor to pass through the low temperature evaporator in a reverse direction. The warm refrigerant is drawn from a position downstream of the connection point and upstream of the suction side of the MT compressor and returned to the suction side of the LT compressor.

Abstract: A method for defrosting an evaporator of a refrigeration system includes providing a refrigeration system including a low temperature (LT) compressor, a medium temperature (MT) compressor, a low temperature evaporator, and a medium temperature evaporator. The method includes initiating a defrost cycle for the refrigeration system by closing a return valve to shut off refrigerant return to the LT compressor from an outlet of the low temperature evaporator and opening a defrost supply valve to define a fluid flow path between a suction side of the MT compressor and an outlet of the low temperature evaporator. The method includes operating the LT compressor and the MT compressor such that warm refrigerant from the suction side of the MT compressor is provided through the low temperature evaporator and returned to a suction side of the LT compressor through a hot gas tank.

Abstract: A method for defrosting an evaporator of a refrigeration system includes providing a refrigeration system including a low temperature (LT) compressor, a medium temperature (MT) compressor, a low temperature evaporator, and a medium temperature evaporator. The method includes initiating a defrost cycle for the refrigeration system by closing a return valve to shut off refrigerant return to the LT compressor from an outlet of the low temperature evaporator and opening a defrost supply valve to define a fluid flow path between a suction side of the MT compressor and an outlet of the low temperature evaporator. The method includes operating the LT compressor and the MT compressor such that warm refrigerant from the suction side of the MT compressor is provided through the low temperature evaporator and returned to a suction side of the LT compressor through a hot gas tank.

Abstract: The present disclosure relates to a system for routing optical fibers within multiple dwelling units (MDUs) where the system has a removable optical fiber feature that enables such routing of optical fibers within the MDUs.

Abstract: An explosion-resistant device for a hazardous environment is provided. The device includes an enclosure. The enclosure includes a body, a projected rim extending away from the body and defining an opening, and rim threads positioned on a surface of the projected rim. The device further includes a cover assembly including a joint that includes a first portion and a second portion, the first portion affixed with the body. The cover assembly further includes a cap including a cap top and a cap side extending from the cap top, the cap side further including cap threads complementary to the rim threads. The cover assembly also includes a radial support affixed with the second portion and obstructing the cap from dislocating out of the radial support. The cover assembly is rotatably coupled with the enclosure via the joint.

Abstract: A system for predicting a leak of a HVAC/Refrigeration system includes a critically charged HVAC/Refrigeration system configured to circulate a refrigerant to cool a space, and processing circuitry. The processing circuitry is configured to obtain the subcooling data from the critically charged HVAC/Refrigeration system. The processing circuitry is configured to predict a leak event by providing the subcooling data as an input to a neural network. The neural network is trained using historical data of one or more subcooling parameters of a plurality of critically charged HVAC/Refrigeration systems. The processing circuitry is configured to operate a display to provide a notification to a technician or a manager regarding the predicted leak event at the critically charged HVAC/Refrigeration system.

Abstract: A thermal conductivity detector device includes a chamber defined with an inlet channel and an outlet channel. A temperature sensing element is positioned proximal to the outlet channel and a plurality of passages is defined between the inlet channel and the outlet channel. The plurality of passages is structured to direct a fluid from the inlet channel to impinge on the temperature sensing element to detect the temperature of the fluid.

Abstract: A thermal conductivity detector device includes a chamber defined with an inlet channel and an outlet channel. The chamber is of an elliptical shape having at least two opposing sides of the chamber defined in an arcuate shape. The chamber is defined in the shape of a venturi. A temperature sensing element is positioned within the chamber. The temperature sensing element is configured to determine the temperature of a fluid flowing through the chamber from the inlet channel towards the outlet channel.

Abstract: A method for controlling a condenser unit that includes an indirect evaporative heat exchanger for pre-cooling air from ambient before the air is provided to a condenser coil includes identifying a determination that the indirect evaporative heat exchanger should be activated. The method also includes obtaining a temperature of the pre-cooled air that exits the indirect evaporative heat exchanger for cooling the condenser coil and modulating a vent that controls a portion of the pre-cooled air that is recirculated through the indirect evaporative heat exchanger through multiple wet channels such that the temperature of the pre-cooled air is maintained at least a predetermined amount above a dew point temperature.

Abstract: A method includes determining, based on a signal from a sensor of a service tool that couples with a service port of the HVAC/Refrigeration system to add refrigerant to the HVAC/Refrigeration system or remove refrigerant from the HVAC/Refrigeration system, an amount of refrigerant added to the HVAC/Refrigeration system or an amount of refrigerant removed from the HVAC/Refrigeration system. The method includes determining a current refrigerant level in the HVAC/Refrigeration system. The method also includes performance monitoring for a fleet of units, and predicting an indication of a leak at the HVAC/Refrigeration system. The method includes building or using a database along with artificial intelligence (AI) or machine learning (ML) to predict leaks. The method includes operating a display to provide at least one of the amount of refrigerant added, the amount or refrigerant removed, or the current refrigerant level of the HVAC/Refrigeration system to a user.

Abstract: A method for tracking amount of refrigerant added or removed from an HVAC/refrigeration system includes fluidly coupling a service tool with an inner volume of the refrigeration system. The service tool includes a reservoir that stores and discharges a refrigerant into the refrigeration system or receives the refrigerant from the refrigeration system, and a sensing portion positioned along a fluid flow path between the reservoir and the inner volume of the refrigeration system. The method includes operating the service tool to transfer an amount of refrigerant between the inner volume of the refrigeration system and the reservoir of the service tool. The method includes obtaining a signal from a sensor of the sensing portion indicative of a flow rate of the amount of refrigerant over a time period that the refrigerant is transferred. The method includes determining the amount of refrigerant based on the signal obtained from the sensor.

Abstract: A system for predicting a leak of a HVAC/Refrigeration system includes a critically charged HVAC/Refrigeration system configured to circulate a refrigerant to cool a space, and processing circuitry. The processing circuitry is configured to obtain the subcooling data from the critically charged HVAC/Refrigeration system. The processing circuitry is configured to predict a leak event by providing the subcooling data as an input to a neural network. The neural network is trained using historical data of one or more subcooling parameters of a plurality of critically charged HVAC/Refrigeration systems. The processing circuitry is configured to operate a display to provide a notification to a technician or a manager regarding the predicted leak event at the critically charged HVAC/Refrigeration system.

Abstract: A pharmaceutical composition that is orally applied and that counteracts reproduction and the spread of influenza viruses, in particular influenza viruses of the so-called covid species and their mutations, comprises a pharmaceutically acceptable carrier and at least a first virucidal component designed to unfold antiviral activity when activated, which first virucidal component is sodium chlorite that is dissolved in saliva when the pharmaceutical composition has been applied to a person.

Abstract: A process for producing a hybrid structured surface, including depositing, on a substrate, a layer of mineral resin including a proportion of Si and/or of SiO2 includes between 1% and 30% by molar mass; forming a structure including a plurality of pattern motifs in that layer, having at least one dimension, measured parallel or perpendicular to the substrate, includes between 50 nm and 500 ?m; forming a roughness on at least part of the surface of the pattern motifs.

Abstract: A method for producing an individualisation area includes providing at least a first level of the electrical tracks. The method includes depositing a dielectric layer and a deformable layer on the interconnection level. The method includes producing, in an area of the deformable layer, recessed patterns, by penetrating an imprint mould into the deformable layer, the production of the patterns being configured so that the patterns have a randomness in the deformable layer, thus forming random patterns. The method includes transferring the random patterns into the dielectric layer to form transferred random patterns therein and exposing the vias located in line with the transferred random patterns. The method includes filling the transferred random patterns with an electrically conductive material so as to form electrical connections between vias. The method includes producing a second level of the electrical tracks on the vias and the electrical connections.

Abstract: Systems and techniques may be used for providing artificial intelligence regarding orthopedic patients. A technique may include using sensor data generated over a period of time by a patient an input to a machine learning model. The machine learning model may be trained based on labeled sensor data and labeled outcome data. The machine learning model may generate a predicted outcome for the patient. The technique may include output at least one medical intervention recommendation based on the predicted outcome.

Abstract: Disclosed is a method of delivering a product comprising receiving from a user device, an order, a preferred delivery location, and a user device location, assigning the order a preparation time, receiving an updated user device location at predetermined intervals, using the user device location and order preparation time, placing the order in a production queue to be prepared for delivery, determining if the user device is at the preferred delivery location, when the user device is at the preferred delivery location, delivering the order.

Abstract: The invention relates to a method for visualizing the automation of a drive system for a technical system, wherein the technical system consists of a plurality of modules. Module type data objects that are assigned to module types are stored in a data storage device, wherein the module type data objects include a graphical representation of the module type data relating to the particular module types. First, the module types of the modules of which the technical system is composed are selected by a user via a user interface. Module data objects assigned to the modules are generated by means of a data processing device, which module data objects contain module data, wherein the module data contain data relating to the graphical representation of the module type of each module, and wherein a data processing device generates a visualization of the assembled technical system based on the module data, which visualization is presented to the user by means of a visualization device, in particular a display.

Abstract: A method for producing an individualisation area includes providing at least a first level of the electrical tracks. The method includes depositing a dielectric layer and a deformable layer on the interconnection level. The method includes producing, in an area of the deformable layer, recessed patterns, by penetrating an imprint mould into the deformable layer, the production of the patterns being configured so that the patterns have a randomness in the deformable layer, thus forming random patterns. The method includes transferring the random patterns into the dielectric layer to form transferred random patterns therein and exposing the vias located in line with the transferred random patterns. The method includes filling the transferred random patterns with an electrically conductive material so as to form electrical connections between vias. The method includes producing a second level of the electrical tracks on the vias and the electrical connections.

Abstract: The invention relates to a method of securing an integrated circuit during its fabrication on a wafer, said method including the following steps: delimitation of said wafer of the integrated circuit (1) into a first zone called a standard zone (5a) and a second zone called a security zone (5b), and creation of a random connection tracks network (7b) in said security zone (5b) configured to interconnect a set of conducting nodes (9b) thus forming a physical unclonable function modelled by random electrical continuity that can be queried through said set of conducting nodes using a challenge-response authentication protocol.