Abstract: An environmental control system for a vehicle includes a source of a first medium, a cabin air compressing device including a compressor having a compressor inlet and a compressor outlet, and a conduit fluidly coupling the source of the first medium to the compressor inlet. The first medium provided to the compressor inlet is output at the compressor outlet as a compressed first medium. An environmental control system pack is located downstream from and is fluidly coupled to the compressor outlet. The environmental control system pack includes a ram air circuit having at least one ram air heat exchanger. Another conduit for providing a second medium to the compressor fluidly couples an outlet of the at least one ram air heat exchanger and the compressor inlet.

Abstract: Methods are provided for controlling a refrigerated dryer of a gas compressor system. In an aspect, a control system, including a controller and a flow sensor, selectively operates in a power saving mode in which the controller shuts down a refrigerant compressor included in the dryer system when the flow sensor indicates that no compressed gas is flowing through the dryer. The control system uses input from a temperature sensor to determine whether to activate the compressor regardless of the flow of compressed gas through the dryer.

Abstract: A heating, ventilating and air conditioning (HVAC) sensor device includes a control signal input for receiving, from an HVAC controller, a control signal for controlling a HVAC actuator, a control signal output for transmitting a control signal to the HVAC actuator; and an electronic circuit, which receives a sensor signal indicative of condensation and/or indicative of relative humidity; and passes through the control signal to the control signal output in response to the sensor signal indicative of condensation and/or indicative of relative humidity being within defined ranges, or overwrites the control signal received at the control signal input with a control reference value and outputs the overwritten control signal at the control signal output in response to the sensor signal being outside the defined ranges. The control reference value causes the HVAC actuator to move an actuated part to a safety position which reduces and/or prevents formation of condensation.

Abstract: A refrigerant system including a compressor, an oil separator, an oil solenoid valve, a condenser, an evaporator, a bypass pipe, and a bypass solenoid valve is disclosed. The oil separator is connected to an output end of the compressor. The oil solenoid valve is disposed between the oil cooler and the compressor. The condenser is connected to the oil separator. The evaporator is connected to the condenser. The bypass pipe has a first end and a second end opposite to the first end. The first end is connected between the oil separator and the condenser, and the second end is connected between the evaporator and an input end of the compressor. The bypass solenoid valve is disposed on the bypass pipe. A controlling method for the refrigerant system is also disclosed.

Abstract: A refrigerant leak detection system includes a sensor configured to detect a leaked portion of refrigerant external to a closed-loop refrigeration circuit of a heating, ventilation, and/or air conditioning (HVAC) system, memory circuitry having instructions stored thereon, and processing circuitry configured to execute the instructions to perform various functions. The functions include receiving, from the sensor, sensor feedback indicative of the leaked portion of the refrigerant. The functions also include transmitting, based on the sensor feedback, a notification indicative of the leaked portion of the refrigerant to a third party security server.

Abstract: A method for conditioning air in a temperature-insulated test space of a test chamber and a test chamber serving for receiving test material, in which a temperature ranging from ?20° C. to +180° C. is generated within the test space. A cooling circuit has an internal heat exchanger, which is connected on a high-pressure side of the cooling circuit downstream of a gas cooler and upstream of an expansion valve, the internal heat exchanger being coupled with a medium-pressure bypass of the cooling circuit, the medium-pressure bypass being connected downstream of the internal heat exchanger or the gas cooler and upstream of the expansion valve on the high-pressure side as well as upstream of a high-pressure compressor and downstream of a low-pressure compressor on a medium-pressure side of the cooling circuit, refrigerant being dosed in the medium-pressure side from the high-pressure side via the internal heat exchanger by a second expansion valve.

Abstract: A refrigerator includes a grille assembly having a blowing fan installed at one side of a first storage compartment to discharge air heat-exchanged with a cooling source to at least one of the first and second storage compartment. The grille assembly includes a first guide flow path for guiding air flow from the blowing fan to the first storage compartment, and a second guide flow path for guiding air flow from the blowing fan to the second storage compartment. A first damper is located at the first guide flow path and a second damper is located at the second guide flow path. A detection sensor is installed at an air discharge side of the blowing fan and installed in at least one part of the second guide flow path, and the detection sensor is installed at an air outlet side of the second damper in the second guide flow path.

Abstract: An air conditioner is provided that includes a compressor that compresses and discharges a refrigerant; an indoor heat exchanger that exchanges heat between the refrigerant and indoor air; a sensor unit including at least one sensor; and a controller. The controller performs a primary control of the compressor, based on a first target temperature corresponding to a dew point temperature of the indoor air and a current temperature of the indoor heat exchanger, performs a secondary control of the compressor, based on a second target temperature below zero lower than the first target temperature and the current temperature of the indoor heat exchanger, and determines whether to repeatedly perform at least one of the primary control or the secondary control, based on an amount of moisture contained in the indoor air.

Abstract: A dehumidification system that can be used during emergencies. The system includes an autonomous vehicle carrying a dehumidification device. In response to information about a water-related disaster at a specific location, the system will instruct the vehicle to travel to the location, enter a building, and initiate a series of dehumidification cycles in the interior space of the building. The vehicle can navigate from room to room and determine whether moisture content levels exceed a specified threshold. In response, the vehicle can direct its dehumidification operation to these specific zones.

Abstract: An air handler assembly provides an air handler that resides completely on a drain pan, and comprises multiple panels. At least two panels join at the edges to form an enclosed chamber with central region. Two of the opposing panels are apertured to enable passage of air. Multiple coils carrying cooling fluid are disposed in a parallel relationship, and on the inner side, of the coil panels. A blower forces high velocity air through one or more opposing coil panels, and across the coils to cool the air. From the coils, cooled air flows to central region of air handler. A fan at the top of the air handler draws the cooled air from an outlet opening that forms in a top panel for dispersing through a duct or plenum.

Abstract: An air conditioner has a refrigeration cycle in which a refrigerant circulates through a compressor, an indoor heat exchanger, an expansion valve, and an outdoor heat exchanger which are connected by pipes. The air conditioner includes: an operation frequency detector configured to detect an operation frequency of the compressor; an operation time measurer configured to, based on the operation frequency, measure a continuous time for which a low frequency operation in which the operation frequency of the compressor is equal to or lower than a reference frequency is continuously performed; a stop counter configured to, based on the continuous time, count a stop number of times the compressor is stopped without the continuous time continuing longer than a reference time; and an operation controller configured to, based on the stop number of times, perform a recovery operation that recovers a concentration of a refrigerating machine oil sealed inside the compressor.

Abstract: A method of operating a refrigeration plant which comprises sensing means designed to detect or derive an overheating temperature Tsh at an intake of a compressor assembly of the refrigeration plant. The method comprises: a standard operating mode A that sets an optimal value Ropt, for the operating regime of the compressor Rcomp(t); a mode B, which verifies, whether the overheating temperature Tsh exceeds a threshold value Max, to verify whether the operating regime Rcomp(t) of the compressor assembly is greater than a safety value Mpd and, in the case of a positive outcome, to limit the operating regime Rcomp(t) of the compressor assembly to a safety value Mpd, setting the optimal value Ropt, overriding mode A.

Abstract: A cooling system includes a compressor (31), a condenser (32) and at least a first evaporator (34) and a second evaporator (35) connected in parallel with the first evaporator. A refrigerant is circulated in the cooling system. A controller (40) is provided and configured to control the flow of refrigerant to and/or from at least one of said first evaporator and second evaporator based on the superheat of said at least one of the first evaporator and second evaporator.

Abstract: A sensor device for detection of water, having an inlet connector with an inlet opening, and at least one sensor element, wherein the inlet connector is exposed to or connected to a source of water, the inlet opening forms at least a part of a reservoir for reception of the water from the source of water, the reservoir is in fluid communication with a vent that vents the reservoir to the surrounding air and the sensor element is positioned within or adjacent to the inlet opening and/or the reservoir, such that it protrudes into the reservoir or forms an interface of the reservoir.

Abstract: An apparatus and method for cooling down milk in a milk cooling apparatus, where the milk cooling apparatus includes a coolant circuit with a milk cooling heat exchanger for heat exchange between milk and the coolant, and also includes a chiller with a refrigerant circuit for heat exchange between a refrigerant and the coolant, where the method includes measuring an OUT-temperature of the coolant upstream of the milk cooling heat exchanger and downstream a coolant cooling heat exchanger, and operating one or more compressors based on the measured OUT-temperature to minimize a difference between the measured OUT-temperature and a desired OUT-temperature, and also measuring an IN-temperature of the coolant upstream the coolant cooling heat exchanger and downstream the milk cooling heat exchanger, where the method configures how many compressors of the one or more compressors being active at a certain OUT-temperature based on the measured IN-temperature.

Abstract: An apparatus, comprising an environmental control element configured to control at least one environmental condition of a substance contained within a chamber, the environmental control element includes a thermal insulator configured to provide a thermal shield to the substance and a phase change material (PCM) configured to thermally regulate at least one environmental condition. The environmental control element is configured to control the environmental condition without use of an external power source, thereby allowing the apparatus to be thermally self-recharging.

Abstract: A heating system for heating a fluid received at an inlet, the system including a first heating device disposed in a first heated line branched from the inlet, wherein a first flow of the fluid through the first heated line is configured to be modulated by a first valve; a second heating device disposed in a second heated line branched from the inlet, wherein a second flow of the fluid through the second heated line is configured to be modulated by a second valve; and a bypass line and a third valve disposed in the bypass line, wherein a flow through the bypass line is configured to be modulated by the third valve, wherein the first and second heating devices and the first, second and third valve are configured to cooperate to heat the fluid at an outlet received from the first and second heated line and the bypass line.

Abstract: The present disclosure discloses a system and a method for controlling an operation of a vapor compression cycle based on a hybrid model of dynamics of the vapor compression cycle including a physics-based model and a data-driven model. The method comprises executing a constrained Kalman smoother over the observed variables collected over multiple instances of time to jointly estimate the parameters of the physics-based model and states of the vapor compression cycle, and updating the data-driven model to minimize a difference between the states estimated by executing the constrained Kalman smoother and the states predicted by the physics-based model. The method further comprises updating the hybrid model with the estimated parameters of the physics-based model and the updated data-driven model, and controlling the operation of the vapor compression cycle using the updated hybrid model.

Abstract: The present invention relates to a fully automated frozen food dispensing system that combines precision ingredient blending with dynamic viscosity control and clean-in-place functionality. The system comprises a mixing cylinder containing a rotatable auger, a refrigeration system with a compressor in thermal communication with the cylinder, and a blending manifold having multiple ingredient inlets and a blending chamber. A controller includes motor sensor, and pressure sensors to regulate ingredient delivery, monitor auger torque and product temperature, and cycle the refrigeration system to maintain a target viscosity. The system further supports automated portion control, product-specific dispense timing, gas injection, and pasteurization. Cleaning cycles may be initiated without manual disassembly, involving thawing, purging, rinsing, and verification using sensor feedback. Optional connectivity enables cloud-based monitoring, diagnostics, and remote operation.

Abstract: A device for cooling or freezing glasses with carbon dioxide, having an upwardly open inner space for receiving a glass, wherein the inner space is enclosed all around by an inner wall, wherein a nozzle and a support tray are arranged in the inner space and a glass to be cooled or frozen is movable into the inner space and against the support tray from above, whereby carbon dioxide is released into the glass from the nozzle, and wherein the device has an outer wall, wherein the inner wall has openings leading into the device interior between the inner wall and the outer wall, and/or the inner wall is open towards the device interior beneath the support tray or is sealed with an inner bottom element which has multiple openings leading into the device interior. Optional elements allow fastening the device directly to the valve cap of a gas cylinder.