Abstract: An apparatus, system, device, and the like, for a liquid nitrogen dispensing head that may be used in a system for cooling aggregate, such as may be found in a batch plant involved in producing concrete. The dispensing head is positioned over a conveyor belt that conveys aggregate to a mixing apparatus to produce concrete. The head dispenses liquid nitrogen onto the aggregate to cool the aggregate and may include interior chambers separated by one or more baffles. The chambers may reduce the pressure of the liquid nitrogen onto the aggregate in relation to the flow pressure of the liquid nitrogen entering the dispensing head. In another example, an assembly may include sidewalls that extend to the aggregate on either side of the head to form a cooling tunnel through which the aggregate is conveyed and is exposed to the liquid nitrogen being dispensed from the head.

Abstract: An air-conditioning unit is provided, comprising: an input vent for receiving return air; an intermediate vent; an output vent; a blower fan proximate to the input vent for moving the return air from the input vent to the intermediate vent; and an air-conditioner coil between the intermediate vent and the output vent including an active portion including one or more operational air-conditioning coils that receive a first portion of the return air from the intermediate vent, for circulating a coolant, condition the first portion of the return air by heat exchange with the coolant to create conditioned air, and pass the conditioned air to the output vent, and an inactive portion that does not circulate coolant and passes a second portion of the return air as unconditioned air to the output vent, wherein the conditioned air and the unconditioned air pass through the output vent as supply air.

Abstract: A humidification system of a dispensing head of a dosing machine of fluid products, where the dispensing head includes a closing device having a cup, which can be moved between a distal inoperative position and an operative position where the dispensing head is isolated from the environment. The humidification system automatically generates a humid environment inside the cup, in the proximal position of the closing element, by means of a Peltier cell inserted in a forced flow duct of ambient air. The condensed and/or frosted water from the Peltier cell is fed from a collecting tank to the cup of the closing element automatically through a control unit.

Abstract: An ice maker includes: an upper tray defining an upper chamber that is a portion of an ice chamber, where an upper opening is provided in an upper side of the upper tray; a lower tray defining a lower chamber that is another portion of the ice chamber; a lower support supporting the lower tray and provided with a lower heater; and a control unit configured to operate the lower heater in an ice making process. The control unit variably controls an output of the lower heater so that bubbles included in water in the ice chamber are gathered in a lowermost section in the ice making process.

Abstract: A cryogenic device for storing biological material containers comprises: a sealed cryogenic Dewar vessel; (b) a matrix of receptacles disposed in an inner space of the cryogenic Dewar vessel and configured for receiving and storing biological material containers; (c) means for loading and retrieving the biological material containers. The loading/retrieving means comprises a telescopic cane manipulator configured for loading and retrieving the biological material containers within the matrix. The receptacles are carried by a carousel member rotatable around an axis thereof. The receptacles are arranged into a number of groups distributed over the carousel member. Each group of the receptacles has a central point positioned at distance R1 from the rotation axis of the carousel member. a center of each receptacle within the group is positioned around a central point thereof at distance R2.

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 heating, ventilation, and/or air conditioning (HVAC) system includes a conduit assembly with a first conduit segment, a second conduit segment, and a rotational fitting fluidly coupling the first conduit segment and the second conduit segment to one another. The conduit assembly is configured to fluidly couple to a port of a heat exchanger of the HVAC system, and the rotational fitting is configured to enable the first conduit segment and the second conduit segment to rotate relative to one another between a first orientation and a second orientation and maintain a connection between the first conduit segment and the second conduit segment during relative rotation between the first conduit segment and the second conduit segment.

Abstract: A heating, ventilation, and/or air conditioning (HVAC) unit includes a motor configured to drive a component of the HVAC unit and a jacket disposed about the motor and comprising a cavity defined by a housing of the jacket. The jacket is configured to receive a flow of working fluid and to place the working fluid in a heat exchange relationship with the motor.

Abstract: The present application provides a heat exchange device.

Abstract: A rooftop HVAC unit includes a cabinet, an energy recovery wheel, dampers, and a controller. The energy recovery wheel is configured to be mounted within the cabinet. The energy recovery wheel is configured to transfer heat between an outdoor air stream and a return air stream when in an operational mode, and is further configured not to transfer heat between the outdoor air stream and the return air stream when in a bypass mode. The dampers can direct the outdoor air stream and return air stream through the rooftop HVAC unit, either through the energy recovery wheel or around the energy recovery wheel. The controller is configured to adjust the dampers based on a selection between the operational mode and bypass mode of the energy recovery wheel.

Abstract: A system includes an electrochemical regenerator configured to receive a first solution having a first salt concentration and output a second solution having a second salt concentration lower than the first salt concentration and a third solution having a third salt concentration higher than the first salt concentration. The first and second solutions are sent to first and second reservoirs respectively absorb and emit heat in response to a phase change of one of the solutions. The absorption or emission of heat can be used in a heat pump system.

Abstract: A heat pump includes a refrigerant loop. The refrigerant loop includes a compressor, a first region of a first heat exchanger, a first branching point, a first shutoff valve, a second shutoff valve, and a second heat exchanger. The compressor includes a low-pressure inlet, a mid-pressure inlet, and an outlet. The first heat exchanger is positioned immediately downstream of the outlet of the compressor. The first branching point is positioned immediately downstream of the first region of the first heat exchanger. The refrigerant loop splits into a first path and a second path at the first branching point. The first shutoff valve is positioned along the first path and immediately downstream of the first branching point. The second shutoff valve is positioned along the second path and immediately downstream of the first branching point. The second heat exchanger is downstream of the first heat exchanger.

Abstract: An ice maker of the present invention comprises: an upper tray defining an upper chamber that is a portion of an ice chamber, wherein an upper opening is provided in an upper side of the upper tray; a lower tray defining a lower chamber that is another portion of the ice chamber; a lower support supporting the lower tray and provided with a lower heater; and a control unit configured to operate the lower heater in an ice making process, wherein the control unit variably controls an output of the lower heater so that bubbles included in water in the ice chamber are gathered in a lowermost section in the ice making process.

Abstract: An air mixing system for a heating, ventilation, and air conditioning (HVAC) system includes a conduit configured to receive a first airflow and a second airflow and to discharge the first airflow and the second airflow as a mixed airflow via an outlet of the conduit. The air mixing system also includes a thermal wheel disposed within the conduit. The thermal wheel is configured to direct the first airflow and the second airflow thereacross, rotate within the conduit, and transfer heat between the first airflow and the second airflow.

Abstract: A blast cell system is provided with simple and scalable designs that prevent short cycling of air flow through any pallets in blast cells. The blast cell includes a plurality of suction channels that provide independent fluid pathways for directing the air drawn from different rows in the blast cell into the fan.

Abstract: HVAC system includes a front side access panel, an HVAC unit, a mounting sleeve, and a back side grille. The mounting sleeve and the HVAC unit are configured to fit within the preexisting framing of a building, and in particular to be mounted in a wall, between pre-existing studs, of a room. The HVAC unit can be installed into the mounting sleeve via quick connect mechanisms including, but not limited to, snap in connections and/or tab and slot features. The mounting sleeve enables rapid installation and also condensate collection. The HVAC unit includes an evaporator section, a mechanical section, and a condenser section that are integrally formed as a single physical unit. The design of the HVAC system is optimized to maximize space utilization and support efficient installation and servicing while minimizing product intrusion into living space.

Abstract: The solar augmented chilled-water cooling system comprises a refrigeration cycle, a cooling tower, an air handling unit (AHU), a supplemental cycle and a solar energy harvesting unit. The supplemental cycle is in fluid communication with the refrigeration cycle, which is in fluid communication with the cooling tower, which in turn is in fluid communication with the supplemental cycle. The cooling tower cools a water stream by evaporation. The water stream from the cooling tower is passed to the supplemental cycle for further cooling using energy from the solar energy harvesting unit. The water stream is then passed to a condenser of the refrigeration cycle for its efficient operation at proper temperature. The water stream is then retuned back to the cooling tower to be re-cooled. In the refrigeration cycle, an evaporator uses operation of the associated condenser for providing cooling effect through the AHU.

Abstract: An environmental control system of an aircraft includes a ram air circuit including a ram air shell having at least one heat exchanger positioned therein and a divider arranged within the ram air shell to separate the ram air shell into a first region and a second region. The at least one heat exchanger is arranged within both the first region and the second region. A first medium is configured to flow through the first region and a second, distinct medium is configured to flow through the second region. The environmental control system additionally includes a dehumidification system arranged in fluid communication with the ram air circuit and a compression device arranged in fluid communication with the ram air circuit and the dehumidification system.

Abstract: An environmental control system of an aircraft includes a plurality of inlets for receiving a plurality of mediums including a first medium, a second medium, and a third medium and an outlet for delivering a conditioned flow of the second medium to one or more loads of the aircraft. At least one compressing device is arranged in in fluid communication with the plurality of inlets and the outlet. The at least one compressing device includes a four-wheel compressing device having a compressor and at least one turbine operably coupled via a shaft. In a first mode of operation, the compressor is driven by the first medium, and in a second mode of operation, the compressor is driven by the third medium.

Abstract: A hydronic system is provided that includes a primary fluid loop that includes a thermal source for heating or cooling a working fluid, dual secondary fluid loops that include respective thermal loads, and a decoupler. One leg of a supply tee at an output of the source places the output in fluid communication with one end of a decoupler and, beyond the decoupler, with the input of a thermal load of a first secondary fluid loop. Another leg of the supply tee places the source output in fluid communication with the input of a thermal load in a second secondary fluid loop. One leg of a return tee at an input of the source places the input in fluid communication with the other end of the decoupler and, beyond the decoupler, with the output of the thermal load of the first secondary fluid loop. Another leg of the return tee places the input of the source in fluid communication with the input of the thermal load in the second secondary fluid loop.