Abstract: A subcooling controller includes a sensor and a processor. The sensor measures one or more of a temperature external to a first heat exchanger that removes heat from carbon dioxide refrigerant, a temperature of the carbon dioxide refrigerant, and a pressure of the carbon dioxide refrigerant. The processor determines that one or more of the measured temperature external to the first heat exchanger, the temperature of the carbon dioxide refrigerant, and the pressure of the carbon dioxide refrigerant is above a threshold and in response to that determination, activates a subcooling system. The subcooling system includes a condenser, a second heat exchanger, and a compressor. The condenser removes heat from a second refrigerant. The second heat removes heat from the carbon dioxide refrigerant stored in a flash tank. The compressor compresses the second refrigerant from the second heat exchanger and sends the second refrigerant to the condenser.

Abstract: A wind baffle operable to control air movement to an air inlet of an air-conditioner, the wind baffle comprising: a frame defining an inlet side, an outdoor side opposite the inlet side, and a plurality of wall sections between the inlet side and the outdoor side; a back plate formed on the outdoor side; a first variable air vent formed on a first wall section and being configured to selectively pass or restrict a first air flow through the first variable air vent; a second variable air vent formed on a second wall section and being configured to selectively pass or restrict a second air flow through the second variable air vent; and a securing mechanism on the inlet side configured to attach the wind baffle to the air inlet such that the inlet side faces the air inlet, wherein the inlet side is unobstructed, allowing air to pass freely.

Abstract: A machine for making liquid or semi-liquid food products includes a processing chamber; a frame defining an opening to the chamber; a stirrer mounted inside the chamber; a cooling system including a heat exchanger associated with the chamber; a closing device connected to the frame and movable between a closed configuration occlude the opening, and an open configuration allowing access to the chamber through the opening. The closing device includes a door hinged to the frame. A retaining device acts on the closing device to maintain the closed configuration. The retaining device includes a rotary element, connected to one between the door and the frame and a stop provided on the other. The rotary element is rotatable between a retaining configuration, engaging the stop to stop the opening of the door, and a disengaged configuration, disengaged from the stop to allow opening of the door.

Abstract: A nitrogen production system that can produce high purity nitrogen containing a desired concentration of oxygen and ultrahigh purity nitrogen containing a desired concentration of argon in a single rectifying column while restraining increase in electric power consumption and a production process thereof are provided. The method can include the steps of rectifying a cooled and compressed air stream in the rectifying column; withdrawing the ultrahigh purity nitrogen stream from a top portion of the nitrogen rectifying column, warming the ultrahigh purity nitrogen stream in a heat exchanger, and then recovering the ultrahigh purity nitrogen stream from the heat exchanger; and withdrawing a high purity nitrogen stream from a rectification section of the nitrogen rectifying column, warming the high purity nitrogen stream in the heat exchanger, and then recovering the high purity nitrogen stream from the heat exchanger.

Abstract: A method for controlling a refrigerator includes: a step for determining whether or not a defrosting initiation condition is satisfied with respect to an evaporator; a step for, if the defrosting initiation condition is satisfied, detecting a pressure differential by means of one differential pressure sensor for measuring the pressure differential between a first through hole, which is positioned between the evaporator and an inlet port having air flowing in from a storage chamber, and a second through hole which is positioned between the evaporator and a discharge port having air discharged to the storage chamber; and a defrosting step for variably defrosting in accordance with the measured pressure differential.

Abstract: A circulator for a cooling mat, whereby water is brought into contact with a frozen refrigerant, cooled thereby, and then circulated through a pipe of the mat. A cooling effect can be provided to a user in contact with the mat by using the circulator having a simple structure.

Abstract: An air-conditioning apparatus indoor unit on which maintenance work can be performed without removing a wire from a control box is provided. An air-conditioning apparatus indoor unit according to the present invention is an air-conditioning apparatus indoor unit to be embedded in an indoor ceiling surface. The indoor unit includes a housing, a heat exchanger installed in the housing, a drain pan installed below the heat exchanger, a wire extending into the housing from outside, and a control box connected with the wire in the housing and installed below the drain pan. The housing includes a cutout part at a lower end part of a side plate as a side surface of the housing, and a wire pass-through plate is detachably fitted to the cutout part. The wire pass-through plate includes a hole through which the wire passes. The control box is adjacent to the wire pass-through plate.

Abstract: A method for preparing clear ice includes supporting an ice tray via a rotating assembly. The rotating assembly includes a shroud enclosing a bottom surface of an ice forming plate of the ice tray, and forms an interior passage formed below the ice forming plate. The method further includes supplying water into the ice tray and supplying an air flow from an intake duct via an air duct inlet to the interior passage. The method also includes controlling an angular rotation of the rotating assembly. The rotating assembly rotates relative to the intake duct and the air duct inlet, and the air flow is continuously supplied from the intake duct throughout the angular rotation.

Abstract: A method for removing condensable components from a fluid containing condensable components. The method involves optimizing the temperature of an initial feed stream including the condensable components through heat exchange and cooling to condense liquids there from. The liquids are removed to form a gas stream which is then compressed and after-cooled to form a high pressure stream. A portion of the high pressure stream is expanded to form a cooled low pressure stream which is mixed with the initial feed stream to augment cooling and condensation of condensable components in the initial feed stream.

Abstract: A refrigerant composition, including trifluoroiodomethane (CF3I); 1,1,1,2-tetrafluoropropene (HFO-1234yf); difluoromethane (HFC-32); and carbon dioxide (CO2), for use in a heat exchange system, including refrigeration applications and in particular aspects to the use of such compositions as a replacement of the refrigerant R-404A for heating and cooling applications and to retrofitting heat exchange systems, including systems designed for use with R-404A.

Abstract: A vapor compression system (20; 400; 420) comprises: a compressor (22) having a suction port (40) and a discharge port (42); a heat rejection heat exchanger (58) coupled to the discharge port to receive compressed refrigerant; a heat absorption heat exchanger (88); a first lubricant flowpath (120, 126) from the heat rejection heat exchanger to the compressor; a second lubricant flowpath (121, 126) from the heat absorption heat exchanger to the compressor; at least one lubricant pump (190); and a controller (900) configured to control lubricant flow along the first lubricant flowpath and the second lubricant flowpath based on a sensed fluctuation.

Abstract: An apparatus and a method of defrosting frozen items, is provided. The apparatus and method utilizes a fluid flow system and method, such as a fluid-push/pull system in which generally an entire volume of fluid is pushed or pulled through a cavity in which frozen items are located and/or a continuous motion system in which fluid is circulated within a fluid tank of the system.

Abstract: A refrigeration cycle apparatus refrigeration cycle apparatus in which refrigerant circulates in an order of a compressor, an oil separator, a condenser, an expansion valve, an evaporator, and an accumulator. The refrigeration cycle apparatus includes: an oil returning path extending from the oil separator to the compressor; a first electromagnetic valve provided on the oil returning path; an oil returning path extending from the accumulator to the compressor; a second electromagnetic valve provided on the oil returning path; and a controller configured to control a degree of opening of the first electromagnetic valve and a degree of opening of the second electromagnetic valve.

Abstract: A direct heat exchange system uniformly transfers heat through a multiphase substance, such as a refrigerant, to a barrier that emits heat radiantly and convectively. The system solely uses the multiphase substance to exchange heat between the multiphase substance and the barrier. No intermediary fluids are used. A heat exchange portion, such as a heat pump, absorbs and emits heat and transfers it to the multiphase substance. A tube portion carries the multiphase substance to the barrier. The heat is directly exchanged between the tube and the barrier. The barrier emits radiant heat or absorbs heat. A tube fastener fastens the tube to the barrier. A thermal mass portion stores heat behind the barrier. A dehumidification coil helps prevent indoor condensation and tempers the temperature of the air proximal to the barrier by drying the air. A decorative panel covers the tube portion and the thermal mass portion.

Abstract: A refrigerated merchandiser is provided including a case having a first case section. The first case section defines a first product display area and an air passageway. The air passageway supports a fan and is in fluid communication with an airflow inlet and an airflow outlet. The air passageway is at least partially defined by a refrigeration system including an evaporator. A portion of the air passageway is further defined by a plenum having a stepped profile configured to channel and adjust a direction of an airflow within the first air passageway prior to entering the evaporator. The refrigerated merchandiser may further include a second case section defining a second product display area and including a glass panel. A first airflow portion of an airflow is configured to flow through the airflow inlet toward the evaporator and a second airflow portion is configured to flow through a second airflow outlet via an evaporator bypass channel.

Abstract: The present invention provides a refrigeration device, wherein a chamber structure is provided with a refrigeration space, and further fitted with a return outlet flow pipe and a return inlet flow pipe. Cold from a cold source produced by a refrigeration chip passes through a temperature equalization plate or a heat conducting pipe to enter the interior of a refrigeration space. A return inlet flow pipe of the refrigeration device is inserted into a beverage and used to input the beverage to the interior of the refrigeration space for cooling thereof. The beverage is then output from the inside of the refrigeration space through the return outlet flow pipe into a cup. The refrigeration device thus achieves fast cooling of a beverage to produce a cold drink. The refrigeration device can be applied in medical treatment, beds, and clothing, as well as medical equipment to provide a cooling function.

Abstract: There is provided a vehicle air conditioning device of a heat pump system which improves comfortability when changing to heating only by an auxiliary heating device. The device includes a heating medium circulating circuit 23 to heat air to be supplied from an air flow passage 3 to a vehicle interior, and when shifting to the heating of the vehicle interior only by the heating medium circulating circuit 23 in a heating mode, a controller executes a shifting control to increase a heating capability of the heating medium circulating circuit 23 prior to stopping a compressor 2 and decrease a heating capability of a radiator 4 in accordance with the increase of the heating capability of the heating medium circulating circuit 23.

Abstract: A heat pump system that can be selectively utilized to discharge excessive heating and cooling capacity toward secondary devices of the system to maintain operation of the heat pump system to better manage the respective temperatures associated with the fluid flows in a manner that reduces the need for cycling the heat pump system ON and OFF to attain desired fluid output temperature manipulations.

Abstract: A refrigerating structure may include an air inlet mechanism, a water tank, and an air outlet mechanism. The air inlet mechanism introduces hot air from a room into the water tank, and comprises a first fan, an air inlet channel, an air inlet pipe and an air pump. The first fan is arranged in the air inlet channel. The air inlet pipe is extended into a bottom of the water tank, and the air pump is arranged at one end of the air inlet pipe extended into the water tank. The water tank is provided with a water inlet pipe and a water discharge pipe communicated with seawater or underground water. The water inlet pipe is arranged at an upper part of the water tank, the upper part of the water tank is open. The air outlet mechanism discharges cold air in the water tank into the room.

Abstract: A collapsible roof top unit (RTU) includes a plurality of heating, ventilation, and air conditioning (HVAC) components. The collapsible RTU also includes a frame disposed about the plurality of HVAC components. The frame is configured to transition between a full frame width configuration and a reduced frame width configuration. Additionally, the frame includes a plurality of retractable rails.