Abstract: A control method of a refrigerating and freezing device and a refrigerating and freezing device are provided. The refrigerating and freezing device includes a cabinet defining a storage compartment. The control method includes a refrigerating operation step, a foodstuff determining step, and a cooling operation step. The refrigerating operation step is to control a temperature of the storage compartment to be within a first preset temperature range. The foodstuff determining step is to determine whether a new foodstuff is put into the storage compartment. The cooling operation step is to, when a new foodstuff is put into the storage compartment, cool the storage compartment.

Abstract: Systems and methods described herein can non-destructively determine current produce quality. An evaluation system can, at a first time, receive image data of produce and identify a type of the produce using machine learning techniques. The produce can be sent to an end-consumer retail environment. A quality assessment system can, at a second time, receive, from a user device in the retail environment, a request for a current quality of a particular produce that includes scanned data of that produce. The quality assessment system can identify that produce, retrieve, from a data store, machine learning trained models for identifying quality features of that produce, determine, based on applying the models to the scanned data, a current quality of that produce, and transmit, to the user device, the current quality. The produce's price can also be dynamically adjusted based on the current quality of that produce.

Abstract: A coating device includes a first coating mechanism configured to coat a first surface of a substrate, a first oven drying mechanism arranged downstream of the first coating mechanism, a second coating mechanism arranged downstream of the first oven drying mechanism and configured to coat a second surface of the substrate opposite to the first surface, and a second oven drying mechanism arranged downstream of the second coating mechanism. The coating device further includes a third oven drying mechanism arranged downstream of the second oven drying mechanism and configured to further oven dry the coating on the second surface such that the coating on the first surface and the coating on the second surface are evenly dried.

Abstract: In a device that measures biopotentials of cells in a solution, the solution is controlled at a constant temperature. A measurement device includes a substrate, a sensing control circuit, a temperature sensor, a front surface side heat radiating unit, a back surface side heat radiating unit, and a temperature control unit. A plurality of electrodes each detecting a potential in the solution is arranged on the front surface of the substrate. The sensing control circuit is arranged on the substrate and controls detection of potentials at the plurality of electrodes. The temperature sensor is arranged on the substrate and detects a temperature of the solution. The front surface side heat radiating unit is arranged on the front surface side of the substrate and radiates heat. The back surface side heat radiating unit is arranged on the back surface side that is a surface different from the front surface of the substrate, and radiates heat.

Abstract: Shipping system for storing and/or transporting temperature-sensitive materials. In one embodiment, the system includes an outer box having four side walls, bottom closure flaps, and top closure flaps. A vacuum insulated panel (VIP) is detachably coupled to one of the top closure flaps and is removably covered by a cover. An insulation unit is removably positioned within the outer box, the insulation unit including a plurality of VIPs arranged to define a cavity bounded by a bottom wall and four side walls. A disposable liner is removably mounted on the insulation unit. The liner may be a thermoformed sheet and may cover the interior and top surfaces of the insulation unit. A plurality of temperature-control members and a product box may be removably positioned in the liner. Preferably, the liner is shaped so that the temperature-control members snugly fit around all sides of the product box.

Abstract: An operational analytics system includes a plurality of access point devices and an electronic controller. The plurality of access point devices are configured to receive a wireless signal for at least one wireless device. The electronic controller is configured to receive a signal strength indicator for the at least one wireless device from the plurality of access point devices, calculate a position of the at least one wireless device based on the signal strength indicator for the at least one wireless device, and configured to determine a time the wireless device remains at the position, and when the time exceeds a threshold time, perform a mitigation operation.

Abstract: Quantum processing circuitry cooling systems are provided. The systems can include: a first chamber maintained at a first pressure; a second chamber maintained at a second pressure, wherein the first and second pressures are independent from one another; a cooler within the first chamber and operable to act as a cooling source for the cooling system; and quantum processing circuitry within the second chamber, the quantum processing circuitry being thermally coupled to the cooler.

Abstract: According to one embodiment, a cooling device includes a flow path configured to flow a refrigerant, a condenser provided in the flow path, a heat exchanger provided in the flow path, a compressor provided in the flow path between the condenser and the heat exchanger, a cooler cooling the refrigerant flowing from the condenser into the heat exchanger, a gas cooling part supplying a gas to the heat exchanger, and configured to cool the gas by exchanging heat with the refrigerant, a first thermometer configured to detect a temperature of the cooled gas, a second thermometer configured to detect a temperature of the refrigerant flowing into the heat exchanger, and a first controller configured to control the temperature of the cooled refrigerant flowing into the heat exchanger by the cooler. The first controller controls the temperature of the cooled refrigerant by switching a first control and a second control.

Abstract: A heat exchange system and a method for reclaiming corrosion inhibitor in a heat exchange system are provided by the present disclosure. The heat exchange system includes a compressor (1), a condenser (2) and an evaporator (3) connected in sequence, and the heat exchange system further includes a system for reclaiming corrosion inhibitor which includes an ejector (6) including a high-pressure fluid inlet (61) connected to an outlet (11) of the compressor, a suction fluid inlet (62) connected to the heat exchange system to extract a liquid-state refrigerant in the heat exchange system, and a fluid outlet (63) leading to bearings of the compressor, wherein a pressurizing device (5) is provided between the outlet of the compressor and the high-pressure fluid inlet of the ejector. The heat exchange system according to the embodiments of the present disclosure can provide sufficient corrosion inhibitor to the bearings of the compressor under various working conditions.

Abstract: A heating cooker includes a heating chamber, a heating portion, a brushless motor, a body control circuit, a DC power supply circuit, a motor control circuit, and a safety device. The brushless motor drives a rotary drive mechanism included in the heating portion. The body control circuit outputs a drive signal for the brushless motor. The DC power supply circuit supplies DC power to the brushless motor. The motor control circuit controls the driving of the brushless motor in response to the drive signal. The safety device includes a rotation detection element to detect the rotation state of the rotor of the brushless motor and output a rotation detection signal, and a switch for blocking a power supply line connected to the DC power supply circuit. The safety device controls the switch in response to the rotation detection signal and drive signal.

Abstract: Examples of the present disclosure relate to climate control systems and outdoor units that use humidity measurements associated with the outdoor environment to improve the operation of one or more components. In some examples, an outdoor unit of a climate control system includes a housing, a compressor located within the housing that circulate a refrigerant fluid, and a humidity sensor that detects a humidity condition of an outdoor environment. The outdoor unit may further include control circuitry that controls the compressor by establishing a target parameter, where the target parameter is associated with a property of a refrigerant fluid. The control circuitry may further receive measurements associated with the humidity condition of the outdoor environment, adjust the target parameter based on the measurement, monitor the property of the refrigerant fluid, compare the monitored property to the adjusted target parameter, and adjust operation of the compressor based on the comparison.

Abstract: A refrigeration appliance system including a camera captures images of objects entering and exiting the interior space of a refrigeration appliance and processes the images to identify the objects in the image, for example, using a trained machine learning model. The system may also process the images to determine a volume or quantity within the object. Using this determined information, the system may then create, update, or alter a log of objects within the refrigeration appliance and/or the determined volumes or quantities. The system may also provide the log and/or recommendations of items to purchase to a user.

Abstract: An aircraft including a fuselage, a wing structure, at least one turbomachine running on hydrogen and generating thrust at a propulsion unit distant from the fuselage, at least one fuel tank positioned in the fuselage and configured to store hydrogen in the cryogenic state, at least one hydrogen supply device connecting the fuel tank and the turbomachine and including at least one pump positioned in the fuselage in the vicinity of the fuel tank, at least one hydrogen heating system positioned in the fuselage in the vicinity of the pump. This solution makes it possible to reduce a length of the complex double-walled pipes configured for carrying the hydrogen in the cryogenic state between the fuel tank and the hydrogen heating system.

Abstract: A device for preparing a microscopic sample for a high-pressure freezing process in which the sample is provided using an arrangement having a middle plate of a high-pressure freezing cartridge and an incubation chamber, the middle plate being attached to and detachable from the incubation chamber by effecting a relative movement between the middle plate and the incubation chamber, and the sample being provided on an enclosing element which is fitted into an opening of the middle plate, wherein the device includes an engagement structure adapted to engage with the middle plate and to restrict a movement of the middle plate while the incubation chamber is moved, such as to effect the relative movement between the middle plate and the incubation chamber and to thereby detach the middle plate from the incubation chamber.

Abstract: The present invention relates to a method of freezing of biological material and a freezing apparatus for freezing of biological material.

Abstract: An example test system includes test sites for testing devices under test (DUTs), where the test sites include a test site configured to hold a DUT for testing. The test system includes a thermal control system to control a temperature of the DUT separately from control over temperatures of other DUTs in other test sites. The thermal control system includes a thermoelectric cooler (TEC) and a structure that is thermally conductive. The TEC is in thermal communication with the DUT to control the temperature of the DUT by transferring heat between the DUT and the structure.

Abstract: A stirring device includes a tray configured to hold an ink container filled with ink, a support member configured to support the tray, a rotary member configured to support the support member, and a pedestal configured to rotatably support the rotary member, in which the tray and the support member are engaged with each other by engagement portions provided on the tray and the support member (engagement cut-out portion, engagement convex portion).

Abstract: A portable thermal insulated apparatus for cooling or heating items stored therein. The thermal insulated apparatus includes a container having a lid that removably secures to an open first end thereof and a reservoir unit that removably secures to an open second end. The container includes an inner tube and an outer tube forming an insulated double-wall sealed at both ends in which the lid and reservoir unit can be connected thereto. The reservoir unit removably receives a thermal unit that provides cooling or heating to the contents of the container when affixed thereto. The thermal unit is separable from the reservoir unit, such that the thermal units are interchangeable as needed. In some embodiments, the thermal unit is directly securable to the lid and the second end of the container is permanently sealed.

Abstract: A portable cooler container is provided. The temperature control system cools a chamber of the container to transport temperature sensitive contents via the container. An electronic display screen on one of the lid and the container body selectively displays an electronic shipping label for the portable cooler container.

Abstract: A vacuum insulated door for an appliance includes an outer wrapper that defines an evacuation port. An inner liner is coupled to the outer wrapper defining an insulating cavity therebetween. A base is coupled to the outer wrapper adjacent to the evacuation port. A servicing tube has a connecting end and a servicing end. The servicing tube is in fluid communication with the insulating cavity via the evacuation port. The connecting end is coupled to the base. A handle has first and second ends coupled to the outer wrapper and a center portion therebetween spaced-apart from the outer wrapper. The first end is coupled to the outer wrapper proximate the evacuation port. The servicing tube extends along an inner surface of the handle.

Abstract: The invention discloses methods and apparatus(es) for the removal and control of pollutants such as gases and suspended particulates in the air of an enclosed space or an outdoor environment by passing the air through absorbent media. The absorbent media includes any liquid, solid or combination of liquid and solid media that is capable of absorbing a material in which it comes in contact. In one aspect of the invention, formaldehyde is removed by air sparging through a liquid such as water, optionally containing additional scavenging agents.

Abstract: A specialized audio/instrument cable adapter with built-in digital signal processing capabilities that adds user-defined audio effects (such as reverb, delay, chorus and/or distortion) from within the cable adapter itself to affect the sound generated from an instrument or microphone such that the cable adapter (with a instrument/microphone cable) is the only connection needed between the instrument or microphone and an output device (such as an amplifier, PA, powered speaker, music mixer, or a recording device). The audio effects used by the cable adapter can be changed via (i) an app from a smartphone, tablet, computer or other electronic device; (ii) a wireless controller that attaches to the instrument; (iii) a pedal, and/or (iv) any other type of wireless controller that has the ability to communicate with a smartphone/tablet/computer or other electronic device.

Abstract: The present invention relates to a container provided with heat insulation means (8), characterized in that the heat insulation means (8) are removable and consist of a partition having a multilayered structure, or films, arranged between the wall of the tank (5) and at least the walls of two of the above-mentioned sides (2, 2?) as well as the upper surface (4) of the container (1). The invention further relates to the use of such heat insulation means (8) in a conventional container (1).

Abstract: Manual and automated methods of pre-charging an empty or partially empty insulated container with CO2 snow are provided. A first location such as a charging location charges CO2 liquid into a container to create a pre-charged container with CO2 snow. The charging location prepares the pre-charged container for delivery to a second location, either by itself, or through a third party. The second location may be a clinical site, which upon receipt of the pre-charged container, loads a perishable item such as a biological sample into the pre-charged container. A user receives the pre-charged container with perishable item and removes the perishable item from the pre-charger container for testing (e.g., biological testing). Depending on the level of depletion of the CO2 snow in the pre-charged container, the user returns the depleted container to the first location or the intermediate location.

Abstract: A heat extraction system for an enclosure comprises heat pipes having an evaporating reference temperature and a condensing reference temperature lower than the evaporating reference temperature, an evaporator portion and a condenser portion. The heat extraction system includes a support frame adapted for connection to the enclosure. The support frame is arranged with respect to the heat pipes such that, when the support frame is connected to the enclosure, the evaporator portion is thermally coupled to the at least one computer and the condenser portion is thermally coupled to a surrounding environment of the enclosure. The heat pipes are arranged with respect to the enclosure so as to transfer thermal energy from the enclosure to the surrounding environment when an interior temperature of the enclosure is greater than the evaporating reference temperature and an exterior temperature of the surrounding environment is less than the condensing reference temperature.

Abstract: A refrigerator appliance, as provided herein, may include a cabinet, a first liner, a second liner, a first fan, a second fan, and a return line. The cabinet may define an evaporator chamber. The first liner may be attached to the cabinet and may define a first chilled chamber having a primary air inlet, a secondary air inlet, and an air outlet. The second liner may be attached to the cabinet and may define a second chilled chamber spaced apart from the first chilled chamber, the second chilled chamber having an air inlet and an air outlet. The return line may extend in fluid communication from the air outlet of the second chilled chamber to the secondary air inlet of the first chilled chamber.

Abstract: A high efficiency airflow management system can be used to reliably and consistently draw air through palletized product stacks with a minimum of energy expenditure. A racking system is provided with a grid of pallet bays separated from an air plenum/chamber by a wall having an airflow opening for each pallet bays. An air seal is formed at the periphery of each opening by resiliently flexible side seals and a top seal to form a highly airtight interface between the pallet assembly and the adjacent airflow opening. When a pressure differential is developed between the chamber and the pallet bay, air is efficiently drawn substantially exclusively through the pallet assemblies with minimal leakage. The flexible sealing arrangement accommodates pallet assemblies with unevenly stacked rows of cases without significant loss of system efficiency.

Abstract: The disclosure relates to an air generating system for reservoir tank, an immersion cooling apparatus having the same and a method for operating the same. The air generating system is adapted for a reservoir tank. The reservoir tank has a liquid accommodation space and an opening connected to each other. The air generating system includes a first air generating assembly configured to be disposed on the reservoir tank and to generate an airflow distribution at the opening or between the opening and the liquid accommodation space.

Abstract: The present invention provides a waterless keep-alive apparatus and a refrigeration appliance having the same. The waterless keep-alive apparatus is provided in an inner tank of a refrigeration appliance, and comprises: a keep-alive box allowing pulling inward and outward; a temperature controlling module and a humidity controlling module which are connected with the keep-alive box; and an air controlling module having an air hole provided on a side wall of the keep-alive box and an air duct fixed on the inner tank of the refrigeration appliance. The air duct is hermetically connected with the air hole when the keep-alive box is pushed into the inner tank of the refrigeration appliance. The air duct is disconnected from the air hole when the keep-alive box is pulled out. The waterless keep-alive apparatus realizes convenient article fetching while the oxygen concentration in the keep-alive box can meet the survival needs of aquatic products.

Abstract: The present invention relates to an apparatus and a process for subjecting oleaginous vegetable material to a continuous prepressing for extracting at least part of the oil contained in said oleaginous vegetable material and producing a cake comprising an at least partially de-oiled oleaginous vegetable material. The apparatus comprises a mechanical prepress for mechanically compressing said oleaginous vegetable material, wherein the prepress is provided with a cake discharge for discharging the cake to a cooler. The cooler comprising means for subjecting the cake to a downward movement, and means for supplying a coolant gas, preferably air, in a counter-current flow to the downward movement of the cake with the purpose of cooling the cake.

Abstract: A system and method for concurrently and uniformly removing thermal energy from clustered specimen samples.

Abstract: Aspects relate to methods, systems, and processes related to providing purchasing recommendations to a consumer including tracking and recording, by a processor, perishable product input related to a perishable product, tracking and recording consumption information related to the perishable product and the consumer, tracking and recording waste information related to the perishable product and the consumer, and providing a purchasing recommendation to the consumer based on the recorded perishable product input, the consumption information, and the waste information.

Abstract: Methods, systems, workstations, viewers, grossing stations and computer include a display and a viewer circuit configured to cause the display to concurrently display: (i) a macroscopic view of a grossing specimen with virtual cut location marks associated with orientation and location of actual physical cut locations used to obtain tissue samples from the grossing specimen and (ii) at least one digital microscopic whole-slide image (WSI) of a tissue section from the specimen. The display can show the at least one WSI image on the display with a relevant cut location mark on the macroscopic view shown visually enhanced from other cut location marks on the macroscopic view to thereby allow a user to visually connect where the tissue section in the WSI image was obtained during a grossing procedure.

Abstract: A method for hyper-fast cooling of samples is described. The samples are secured in a sample container, then the sample container inserted into a cryogenic cooling chamber through an opening of the cooling chamber. The sample container is placed some distance away from a cooling head, but within range of a continuous stream of pressurized liquid coolant emitted by the cooling head, where, the sample is hyper-cooled by spraying the sample container with a continuous stream of the pressurized liquid coolant.

Abstract: Systems and methods for cooling and processing materials are disclosed.

Abstract: A cargo pallet cover (14) having a main panel (15) and a plurality of side panels (16) extending therefrom, the main panel (15) being adapted to overlie a load (10) on a pallet (12) in use and the side panels (16) being adapted to hang down against the sides of the load (10), each side panel (16) being attached to an adjacent side panel (16) along adjacent edges to define a corner, the cargo pallet cover (14) comprising at least one drainage panel (22) to permit liquid to drain through the cargo pallet cover (14).

Abstract: A sealing system (38) for use in an aircraft facility to be sealed from the environment comprises a closing element (40) which can be connected to a housing (42) of the aircraft facility in order to seal an opening (44) formed in the housing (42) of the aircraft facility. Furthermore, the sealing system (38) comprises a receiving device (46), and a sealing element (48) received in the receiving device (46). A transfer device (54) is adapted to transfer the sealing element (48) between an inactive state, in which the sealing element (48) is shaped and/or positioned such that it cannot be brought into sealing contact with a sealing surface (64), and an active state, in which the sealing element (48) is shaped and/or positioned such that it can be brought into sealing contact with the sealing surface (64).

Abstract: The biocontainer of the present invention provides a low cost, simple solution of many of the problems encountered during shipping, freezing and thawing of biopharmaceutical materials. The present invention enables a user to monitor the temperature profile of each biopharmaceutical container during the cryogenic process, so as to ensure the integrity of materials within each biocontainer by using a pre-installed and pre-sterilized temperature sensor. In some embodiments, the sensor assembly includes a wireless transmitter and is capable of transmitting information regarding the measured reading. In other embodiments, the sensor assembly includes a processing unit, which determines whether the temperature profile is acceptable. In a further embodiment, an indicator is included, such that the processing unit may indicate whether the biopharmaceutical material has been properly frozen.

Abstract: A machine (10) for the production and dispensing of food products such as ice cream and the like comprises a tub (11) cooled by a refrigerating circuit (12) and a motor-driven helical mixer (14) which rotates inside the tub. The tub is provided at the front with a tap (15) for dispensing the product through a dispensing outlet (16) and comprises a control system (21), a sensor (23) for rotation of the mixer and an interface panel (22) which are connected to the control system (21) so that, when rotation of the mixer (13) is detected by means of the sensor (23), the control system (21) shows on the interface panel (22) an animated image (28) representing said rotation.

Abstract: A system and method of use of same for cooling process vessels, particularly those having reactor beds inside such as hydrotreaters, hydrocrackers, and catalytic reformers as part of processing units, during unit turnarounds. While the process vessel is in normal operation or in a preliminary cool down phase, quench gas flow is routed through a bypass flow path while a recirculating gas cooling system is installed in the primary flow path, requiring no unit downtime. During a turnaround, the process vessel temperature is lowered to a desired temperature, permitting entry and replacement of catalyst inventory, using the existing hydrogen recirculating (recycle gas) compressor to circulate a recirculating gas stream through the recirculating gas cooling system, the process vessel, and back through the compressor and recirculating gas cooling system. The cooling system removes heat from the circulating flowstream, thus lowering the process vessel temperature, faster than cold nitrogen injection methods.

Abstract: a cup assembly includes a cup and a removable cooler block. The cup includes a base and a circumferential wall to commonly define a space for containing the liquid wherein at least one of the cooler block and the base is equipped with a magnet and the other with either the magnetic attraction part or another magnet. The cooler block includes material of the high specific heat and/or of the high thermal conductivity.

Abstract: The present disclosure relates to systems and methods for creating and maintaining modified and controlled atmospheres (MA/CA) in a rigid sealable container having at least one refrigeration unit with an integrated oxygen reduction structure. The refrigeration unit provides the necessary ambient atmosphere movement for the oxygen reduction structure, such as a hydrogen fuel cell. The systems and methods are useful in the, storage, transport, distribution, processing and packaging of fresh perishables with a focus on altering the natural gaseous environment around the perishables such that fresh shelf-life is extended. The systems may operate in a power generation/power production mode, such that the fuel cells maintain the MA/CA environment while providing both primary and back-up power.

Abstract: A placental construct for treatment of a disease or condition is provided. The placental construct includes a therapeutically effective amount of a birth tissue material.

Abstract: The present invention provides a method for cryoprotecting a biological specimen comprising the step of freezing said biological specimen in the presence of a hydrogel and in the absence of cryoprotectant.

Abstract: The present invention relates to an aerated frozen confection with an overrun of between 120% and 160%, which includes acacia gum as all or part of a natural emulsifier. A process for the preparation of this frozen confection is also disclosed.

Abstract: A method for reducing a temperature of a product in a freezer includes providing a product to a chamber of the freezer; dividing a portion of the chamber disposed between a pair of baffle assemblies in the freezer into an intake zone and an outflow zone; moving each baffle assembly of the pair of baffle assemblies in the chamber 90° degrees out of phase with each other for directing a gas flow in the chamber; oscillating the gas flow within the chamber between the intake zone and the outflow zone during the moving the pair of baffle assemblies; injecting a cryogen substance into the chamber for cooling the gas flow; and contacting the product with the cooling gas flow.

Abstract: The invention relates to a method for transporting heat-sensitive products in a refrigerated lorry of the indirect injection type, wherein the temperature Tint inside the storage chamber is regulated by varying the pinch of the exchanger (Pinch=Tint?TFluid outflow) according to the position of the internal temperature Tint in relation to a temperature set value.

Abstract: A cooling apparatus is provided for a switchgear. The switchgear has one or more primary contacts constructed and arranged to connect to a terminal of a circuit breaker. The cooling apparatus includes an evaporator constructed and arranged to be associated with each primary contact. A condenser is located at a higher elevation than the evaporator. Fluid conduit structure fluidly connects the evaporator with the condenser. A portion of the fluid conduit structure defines a busbar tube electrically connected with an associated primary contact and defining a busbar of the switchgear. Working fluid is in the evaporator so as to be heated to a vapor state, with the fluid conduit structure being constructed and arranged to transfer the vapor to the condenser and to passively return condensed working fluid back to the evaporator for cooling the at least one primary contact and the associated busbar tube.

Abstract: The biocontainer of the present invention provides a low cost, simple solution of many of the problems encountered during shipping, freezing and thawing of biopharmaceutical materials. The present invention enables a user to monitor the temperature profile of each biopharmaceutical container during the cryogenic process, so as to ensure the integrity of materials within each biocontainer by using a pre-installed and pre-sterilized temperature sensor. In some embodiments, the sensor assembly includes a wireless transmitter and is capable of transmitting information regarding the measured reading. In other embodiments, the sensor assembly includes a processing unit, which determines whether the temperature profile is acceptable. In a further embodiment, an indicator is included, such that the processing unit may indicate whether the biopharmaceutical material has been properly frozen.

Abstract: A cryogenic refrigeration system for lyophilization is disclosed. The cryogenic refrigeration system includes a cryogenic heat exchanger system adapted for vaporizing a liquid cryogen and using the gaseous cryogen to cool heat transfer fluid and a heat transfer cooling circuit that cools the lyophilization chamber as well as the condenser. The disclosed heat transfer cooling circuit includes a primary recirculation loop adapted for cooling the lyophilization chamber with the heat transfer fluid, a secondary recirculation loop adapted for cooling a condenser with the heat transfer fluid, and one or more valves operatively coupling the cryogenic heat exchanger system, the primary recirculation loop, and the secondary recirculation loop.