Abstract: A humidity control system and method for controlling the humidity of ambient air is disclosed. The system includes a humidification and dehumidification systems to increase and/or decrease the humidity level of an indoor space and a sensor to sense ambient conditions of the space. The system further includes a controller that receives a humidity setpoint for the indoor space, determines the humidity level associated with the indoor space, compares the determined humidity level to the humidity setpoint, and causes activation of one of a humidification system or a dehumidification system. In response to causing the activation of one of the humidification or dehumidification system, the controller initiates a lockout condition during which the other of the one of the humidification or dehumidification system is prevented from activation. The controller also monitors for an override condition and enables activation of the other of the humidification system or the dehumidification system accordingly.

Abstract: A refrigerator includes a refrigerating compartment, a freezing compartment, and an ice-making compartment. The refrigerating compartment is configured to receive cool air from a refrigerating compartment side grille fan assembly, and the ice-making compartment is configured to be located in any one refrigerating compartment door and to receive cool air from a freezing compartment side grille fan assembly with the freezing compartment. The refrigerating compartment side grille fan assembly is configured to supply a greater amount of cool air to a space at a refrigerating compartment door without the ice-making compartment than the amount of cool air supplied to other spaces, and the freezing compartment side grille fan assembly is configured to supply a greater amount of cool air to a space communicating with a recovery duct for the ice-making compartment than the amount of cool air supplied to other spaces.

Abstract: A wall module for a building control system includes a back plate with one or more mounting features for mounting the backplate to a wall. A main body includes one or more attachment features for removably attaching the main body to the back plate. The main body also includes a front side and a back side, wherein at least part of the front side is formed by a front plate. A display is housed by the main body in a display cavity that is defined at least in part by the front plate, and wherein at least part of the display is viewable from the front side. An antenna is housed by the main body in an antenna cavity that is defined at least in part by the front plate.

Abstract: A method of controlling air recirculation via a continuous-feedback loop control system that adjusts cabin air recirculation in vehicles based on a number of different sensor inputs. The system uses a mass balance on the interior passenger compartment of the vehicle to sense and adjust the amount of dissolved water vapor in the cabin for liquid management.

Abstract: A cold storage and a method of operating a cold storage having first cooling unit arranged to cool a compartment and a second cooling unit arranged ensure fast freezing of a substance stored in the compartment. The second cooling unit is operable according to a first, second and third modes of operation involving no, partly, or full contribution from the second cooling unit, wherein shifting between the different modes is determined based on a transition between three different temperature profiles in the compartment.

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.