Abstract: Hydraulic system comprising a three-way valve, the three-way valve comprising a first port for the connection to a primary heat exchanger through the circulation pump, a second port and a third port for connection to the heating circuit and to a secondary heat exchanger, respectively. The three-way valve is switchable between two positions in which the first port is in fluid communication with the second port or with the third port. The three-way valve is responsive to the pressure applied by a circulation pump, and has a displaceable obstructing member that may be moved due to transitions between an off-state and an on-state of the circulation pump. The obstructing member comprises a pair of sealing surfaces facing away from each other and suitable to engage reciprocatingly respective opposed seats of the three-way valve.

Abstract: Heat pump system (100) comprising at least one heat medium circuit (210,220,230,240,250,310,320,410,420,430,440,450,460) in turn comprising a compressor (211), an expansion valve (232,242), at least two different primary heat sources or sinks selected from outdoor air, a water body, the ground or exhaust air, at least one of two different secondary heat sources or sinks selected from indoors air, pool water and tap water, a respective temperature sensor (412,432) at each of said primary heat sources or sinks, a valve means (421,431,451) for selectively directing the primary-side heat medium to at least one of said primary heat exchanging means, and a control means (500). The invention is characterised in that, in a secondary-side heating operating mode, the temperature of said primary heat sources or sinks is measured, and in that the primary-side heat medium is directed only to available primary heat exchanging means associated with the heat sources or sinks with the highest temperature.

Abstract: Disclosed herein is an air conditioner. The air conditioner includes a housing having an inlet and an outlet, a blade having a plurality of discharge holes and provided to discharge air through the plurality of discharge holes, a first opening formed between one side of the blade near the inlet and the housing when the blade discharges air through the plurality of discharge holes, and a second opening formed between the housing and the other side opposite to the one side of the blade when the blade discharges air through the plurality of discharge holes.

Abstract: A grommet assembly includes a bolt assembly that has a head portion. A grommet includes a tapering bolt opening for accepting the bolt assembly. A projecting portion extends from a body portion and has an overhang adjacent a distal end. The bolt opening at least partially defines a radial gap between the grommet and the bolt assembly. The head portion of the bolt assembly is spaced from the distal end of the projecting portion by an axial gap.

Abstract: An air purifier based on the principle of vapor condensation and adsorption and an air-conditioning apparatus having the air purifier is provided. The purifier includes an air blowing device, a humidifying device, a cooling device and a heating device, wherein a passage for air circulation is formed; the air to be purified flows in via inlet of the passage by the air blowing device; when the air is cooled at the cooling device, vapor in the air is condensed and adsorbs pollutants in the air during condensation, and the pollutants, together with the droplets and/or solid particles formed by the condensation of vapor, drip from the air to be purified under the action of gravity, so as to be removed from the air; and the heating device is used for heating, such that the air discharged from outlet of the satisfies a pre-set temperature threshold.

Abstract: Evaporative humidifiers comprising: in vertical relationship and fluid communication with each other, a water inlet and a water reservoir downstream therefrom, positioned to receive water along a first fluid path; air inlet(s) and air outlet(s) in vertical relationship with the water inlet and/or reservoir, and a wick, downstream the water inlet, partially disposed in the reservoir to draw water therefrom to a wick portion in fluid communication with the air inlet(s) and the air outlet(s); and a motor-fan assembly downstream and in vertical relationship with the water inlet, upstream the reservoir. The reservoir and one or more of the air inlet(s) and the air outlet(s) generate an air current for drawing air, via the air inlet(s), from an external environment through the wick portion and move moistened air to the external environment via the air outlet(s) along a second fluid path at least partially separate from the first fluid path.

Abstract: A ventilation grille having a trim ring and a plate releasably connected to the trim ring. The trim ring defines an aperture allowing connection of the trim ring to a main housing of a ventilation system defining an internal region in which a blower is located. The plate is releasably connected to the trim ring to allow access to the trim ring aperture for connection of the trim ring to the main housing or blower and disconnection of the trim ring from the main housing or blower.

Abstract: A ventilation system includes a main housing defining an internal region and a blower contained within the internal region. The ventilation system is positioned adjacent to a room of a building structure and is configured to draw air out of the room to provide ventilation. The ventilation system further includes a grille secured relative to the main housing using an attachment feature.

Abstract: A multi-functional air quality control system including an air conditioner system member for regulating air temperature, an exhaust system member for regulating air pollution, a dehumidifier/humidifier system member for regulating humidity in the air, a sensor for monitoring indoor air quality conditions and for sending control inputs to a control unit for controlling the operation of one or more of the system members based on the monitored air quality conditions and one or more user-selectable operating settings, a control unit for controlling the operation of the one or more system members based on control inputs received from one or more sources, and a housing unit having a cavity in which is mounted the air conditioner system member, the exhaust fan system member, the dehumidifier/humidifier system member and the control unit.

Abstract: An air conditioning system according to an embodiment may include an outdoor unit including a compressor; at least one distributor connected to the outdoor unit and including a condenser and an evaporator that exchange heat between a refrigerant and water with each other; a plurality of heating pipes in communication with the condenser; a plurality of cooling pipes in communication with the evaporator; a plurality of fan coil units connected to the heating pipes or the cooling pipes; and a controller configured to perform a heating pipe search operation for matching a portion of the plurality of fan coil units with the plurality of heating pipes, and a cooling pipe search operation for matching another portion of the plurality of fan coil units with the plurality of cooling pipes, in parallel.

Abstract: An example method for thermally preconditioning a meeting space includes determining that a meeting is electronically scheduled for a meeting space for a plurality of attendees. A thermal preconditioning setpoint for the meeting space is determined based on individual thermal preferences of the plurality of attendees, and a historical setpoint of the meeting space. A time required to achieve the thermal preconditioning setpoint is determined based on the thermal preconditioning setpoint and a temperature of the meeting space before the scheduled meeting. Thermal preconditioning of the meeting space is initiated based on the determined thermal preconditioning setpoint and the determined time.

Abstract: A control system for a heating, ventilation, and/or air conditioning (HVAC) system includes a sensor configured to detect a concentration of refrigerant in air. The control system also includes a controller configured to receive feedback from the sensor indicative of the concentration of refrigerant in air, determine that the concentration of refrigerant in air is less than a threshold value, and determine that the HVAC system is in an operating mode. The controller is configured to operate a blower of the HVAC system for a predetermined time period based on the determinations that the concentration of refrigerant in air is less than the threshold value and that the HVAC system is in the operating mode.

Abstract: A heating, ventilation and air conditioning system (200) reduces energy consumption in a building (202) by turning on and off all compressors (212, 214, 216). The HVAC system (200) includes a plurality of in-flow air temperature sensors (232, 234, 236) and out-flow air temperature sensors (242, 244, 246) that respectively measure return air temperatures at inlets and supply air temperatures at outlets of fan coil units (222, 224, 226) located in rooms (203, 205, 207) of the building (202). The HVAC system (200) turns on and off all the compressor (212, 214, 216) based on the return air temperatures and the supply air temperatures.

Abstract: The present disclosure provides system and method for determining optimal decision parameters for a demand response (DR) event involving a District Cooling Plant (DCP). Most of conventional DR event techniques address control of building-level energy consumption loads alone while in presence of District Cooling (DC) has not received much attention when a plurality of buildings are served by a District Cooling Plant (DCP). The disclosed system and method determine set points of optimal decision parameters of the plurality of buildings and the DCP, by conditioning and un-conditioning on the DCP parameters such that a thermal discomfort of occupants residing in the plurality of buildings is minimum and achieves a maximum target energy demand reduction during the DR event. The disclosed system and method work for hundreds of buildings and able to determine the optimal decision parameters for each building and the DCP efficiently.

Abstract: An air environment control system includes one or more adjustment devices that adjust an air environment in a space; and a control device that controls the one or more adjustment devices. The air environment control device includes an air environment control unit that controls (i) at least one of the one or more adjustment devices to create a cooler environment in the space, when a person does intellectual work in the space; and (ii) at least one of the one or more adjustment devices to create a warmer environment warmer than the cooler environment in the space, when the person has a break in the space. The control unit further controls at least one of the one or more adjustment devices to apply cool stimulation to the person, when the person starts the intellectual work in the space.

Abstract: A ventilator (1) includes: an air supply fan (2) to supply outdoor air to a room; an air exhaust fan (3) to exhaust indoor air, out of the room; and a total heat exchanger (4) which is made with partition boards (41) being moisture-permeable flat parts and with spacer boards (42) being corrugated parts, the partition boards and the spacer boards being alternately stacked, the total heat exchanger exchanging heat between the outdoor air and the indoor air; and thereby suppresses ice formation. The ventilator (1) includes: an indoor temperature sensor (7); an indoor humidity sensor (8); an outdoor temperature sensor (6); and a control unit (5) to control operation of the air supply fan (2) and the air exhaust fan (3) on a basis of at least one state quantity estimated by substituting the indoor air temperature, the indoor air humidity, and the outdoor air temperature in a total heat exchanger model formula (51a) representing characteristics of the total heat exchanger (4).

Abstract: A control system can provide a linear behavior of airflow as a function of damper position of each zone damper in an HVAC system. The control system incrementally closes each zone damper from a fully open position to a fully closed position, and records static pressure measurements with each change in damper position. Then, using a mathematical model that is derived from the second fan law, a correction is calculated for each damper position of each zone damper based on the recorded static pressure measurements to provide corrected damper positions at which the airflow through the zone damper exhibits a linear behavior. The corrected damper positions are stored and used during an operational cycle of the HVAC system to obtain a precise airflow through the zone dampers.

Abstract: A an air handler system, and a method of treating air with the system, the system including a heat exchanger portion configured to draw in room air and outside air to be applied to a heat exchanger, the outside air being drawn from an area adjacent to a room containing the air handler system, and an HVAC portion to perform heating and cooling to air to be circulated into the room, wherein the heat exchanger portion is configured to deliver the outside air treated by the heat exchanger to the HVAC portion to be heated and cooled along with room air drawn into the HVAC portion.

Abstract: A thermostat assembly powered by line voltage and capable of wireless communication with a heat source, comprising a first portion and a second portion separated by a barrier. The first portion receives power via internal housing wiring at a first high voltage level and converts the power from the first high voltage level to a second low voltage level. The second portion is removably connected to the first portions to receive power at the second low voltage level, which powers at least a temperature sensor that measures an ambient temperature of an outside environment and a communication chip for wireless communication with a primary heat source. The barrier inhibits dissipation of heat between the first and second portions to reduce an effect of a temperature of the first portion on the temperature sensor, and prevents a user from contacting any high voltage components when the second portion is removed.

Abstract: A heating, ventilation, and/or air conditioning (HVAC) unit may include a supply fan section having a supply fan disposed therein to force a supply air flow through a discharge plenum of the HVAC unit. The HVAC unit may also include an economizer positioned adjacent the supply fan section to receive an outdoor air flow and direct the outdoor air flow into the supply fan section.

Abstract: An unmanned aerial vehicle includes a platform. An altimeter is mounted in an interior of the platform. The platform is formed with an opening therein providing access to the interior of the platform from an exterior of the platform. A vent is disposed within the opening of the platform and forms a channel configured to allow air to move from the exterior of the platform to the interior of the platform along the entire length of the channel, and preventing ambient water from travelling from the exterior of the platform through an entire length of the channel.

Abstract: A heat exchange system includes a heat exchange main unit having a gas channel and a fluid channel configured such that a fluid in the fluid channel can exchange heat with a flue gas in the gas channel, a housing, a drain collecting part arranged to collect condensate from the flue gas, and a siphon detachably attached to the drain collecting part to prevent release of the flue gas from a condensate outlet formed in the siphon. The siphon has a tubular body, a condensate inlet formed on one end side, and the condensate outlet formed on an other end side. The tubular body has an attaching part to detachably attach the tubular body to the drain collecting part through a hole formed within a wall of the housing, and a grip located outside the housing when the tubular body is attached to the drain collecting part.

Abstract: A heat exchanger system includes a heat exchange main unit having a gas channel and a fluid channel configured such that a fluid in the fluid channel can exchange heat with a flue gas in the gas channel, a housing, a drain collecting part arranged to collect condensate from the flue gas, and a siphon attached to the drain collecting part to prevent release of the flue gas from a condensate outlet. The siphon has a tubular body, first portion having a condensate inlet, and second portion having the condensate outlet and an operation member. When the tubular body is attached to the drain collecting part, the first portion is connected to the drain collecting part, the first and second portions can be at least partially located inside and outside the housing, and the operation member can be located outside the housing. The first and second portions are detachably attached.

Abstract: A furnace for heating a building has its bottom supported spaced above a support surface by an apparatus which comprises a furnace engagement member defining a generally planar top surface for contacting the bottom of the furnace and an underside which is opposite to the top surface; an attachment arrangement respectively located at or adjacent each end of the furnace engagement member and arranged for facilitating connection thereof to a respective flange of the furnace defining the bottom of the furnace; and a leg oriented transversely to the generally planar top surface and coupled to the underside of the furnace engagement member at a location thereon which is spaced in a longitudinal direction from a respective end of the furnace engagement member further inwardly than the attachment arrangement disposed thereat or adjacent thereto.

Abstract: A variable power water heater is disclosed. In embodiments, the variable power water heater includes a water tank, a heating element, a power supply circuit, a switch, and a controller. The heating element may be disposed within or coupled to the water tank. The power supply circuit may be configured to generate a power signal for the heating element. The switch may be configured to couple the power supply circuit to the heating element, and the controller may be configured to toggle the switch according to a pulse width modulation (PWM) scheme to control a duty cycle of the power signal transmitted from the power supply circuit to the heating element.

Abstract: This application relates to the ventilation of a solar roof. For example, a solar roof can include a solar roof tile and a spacer, batten or other ventilating components to space the solar roof tile from the roof deck, and provide ventilation to the solar roof tile, for reduced operating temperatures and improved efficiency in electricity generation.

Abstract: An experimentation apparatus tests for heat produced by cavitation. The experimentation apparatus includes a heating chamber, a quantity of heavy water, a piezo-disk antenna, a target foil, a transmission line, a signal generator, a control unit, and at least one sensor. The heavy water is retained within the heating chamber and is agitated by the piezo-disk antenna to form cavitation bubbles. These cavitation bubbles impact the target foil in order to potentially produce deuteron combination events that could consequently produce heat. The signal generator sends an electrical signal along a transmission line to the piezo-disk antenna in order to dictate how the piezo-disk antenna vibrates within the heavy water. The control unit is used to manage the operational functionalities of the experimentation apparatus such as instructing the signal generator to adjust the frequency of the electrical signal. The at least one sensor collects experimentation data within the heating chamber.

Abstract: There is provided a cryocooler including a cryocooler cylinder, a pressure switching valve that generates a periodic pressure fluctuation inside the cryocooler cylinder, and a sensor that measures a periodic deformation of the cryocooler cylinder, which is caused by the periodic pressure fluctuation inside the cryocooler cylinder.

Abstract: This present disclosure provides a compressor and a refrigeration device having the compressor. The refrigeration device has a coupling assembly and a frequency converter connected to one end of the coupling assembly. The compressor has a first shell and a permanent magnet motor. The permanent magnet motor is set in the first shell and connected to the other end of the coupling assembly. By designing the relevant parameters of the motor of the compressor, the efficiency of the motor and the compressor can be improved.

Abstract: A control system and method for a frostless, multivariable coupling and heat pump-based hot blast stove are used for grain drying. A first heat exchanger, a second heat exchanger, a main solution pool, corresponding pipelines, and a temperature detector are configured in the control system. A first heat pump unit, a second heat pump unit and a third heat pump unit are formed. A preheating zone, a low temperature zone, a medium temperature zone and a high temperature zone are sequentially formed on an air supply pipeline from a fresh air inlet to a fresh air outlet. A frostless operation procedure is provided. Through the configuration, the control system and method for a frostless, multivariable coupling and heat pump-based hot blast stove can implement heat supply in a gradient heat-circulation preheating mode and a gradient heat-circulation frostless mode.

Abstract: A device comprises: a container; a first fitting coupled to the container; and a second fitting coupled to the container, wherein the first fitting is configured for coupling to a first service port of a system and the second fitting is configured for coupling to a second service port of the system such that a fluid can travel from the first service port to the second service port through the container while the system is running, wherein the system comprises at least one of an air conditioning system or a refrigeration system.

Abstract: A temperature chamber for conditioning air includes a temperature-insulated space which receives test material, and a temperature control device for controlling the temperature of the test space. The temperature control device allows a temperature in a range of ?50° C. to +180° C. to be established within the space, and has a cooling device including a cooling circuit with a refrigerant, a heat exchanger, a compressor, a condenser, and an expansion element. A jet device is connected to a low-pressure side of the cooling circuit downstream of the heat exchanger and upstream of the compressor, a first bypass is connected to a high-pressure side of the cooling circuit downstream of the compressor, and the refrigerant is suppliable to the jet device from the high-pressure side via the first bypass as a driving fluid.

Abstract: A control method and a control system for a compressor in a refrigeration system, implements control logic based on the monitoring of parameters of the refrigeration system, where these parameters may include, for example, a previous load (Cant), a current load (Catu), a reference load (Cref), a measured cycle time (tcycle) and a target time (ttarget).

Abstract: Methods, systems, and device for solidification and/or solid production, such as ice production, are provided in accordance with various embodiments. For example, some embodiments include a method of solid production that may include contacting a first fluid with a second fluid to facilitate solidifying the second fluid; the first fluid and the second fluid may be immiscible with respect to each other. The method may include solidifying the second fluid. Some embodiments include a solid production system that may include a first fluid and a second fluid; the first fluid and the second fluid may be immiscible with respect to each other. The system may include one or more surfaces configured to contact the first fluid and the second fluid with each other and to form one or more solids from the second fluid.

Abstract: The present invention relates to a refrigeration and/or freezer device with a cooled interior space and with a storage container for ice cubes located in this interior space, wherein the device preferably comprises an ice cube maker, wherein the ice cubes produced in the ice cube maker are received in the storage container, wherein pulse generation means are provided, which are arranged to apply one or multiple pulses to the storage container.

Abstract: A cold insulation container includes: a cold insulation storage including a coolant vessel; a circulating air fan that causes cold air from the coolant vessel to circulate in the cold insulation storage; a thermoelectric generating module attached to an outer surface of the coolant vessel; and a temperature controller that adjusts a temperature in the cold insulation storage. A temperature difference between the coolant vessel and circulating cold air in the cold insulation storage causes the temperature controller and the circulating air fan to be driven by thermoelectric power generated by the thermoelectric generating module.

Abstract: The expansion device is configured to have a degree of opening corresponding to a fully closed state while the compressor is non-operational. The fan is configured to become non-operational when transition is made, while the compressor is non-operational, from a state in which a temperature difference between a detection temperature of the first temperature sensor and a detection temperature of the second temperature sensor is larger than a criterion value to a state in which the temperature difference is smaller than the criterion value. The fan is configured to become operational when transition is made, while the compressor is operational, from a state in which the temperature difference is smaller than a second criterion value to a state in which the temperature difference is larger than the second criterion value.

Abstract: A refrigerator includes an opening unit such that, when a second door rotates to open a second storing chamber, the second door is separated from a first door. The opening unit includes: a latch hook to be selectively inserted into a latch slot on the front surface of the first door; a pressing portion provided on a door handle of the second door, the pressing portion comprising a guide protrusion having a sloping surface; and a link portion having a contact portion on one end to contact the sloping surface and move upward/downward along the sloping surface, the other end of the link portion contacting the latch hook. When the pressing portion is pressed, the contact portion moves upward along the sloping surface, and the other end of the link portion pushes the latch hook upward with the contact portion to separate the latch hook from the latch slot.

Abstract: The present invention relates to a refrigerator that allows a user to easily open a door thereof.

Abstract: A refrigerating appliance includes an inner liner, an outer wrapper and a trim breaker extending between the inner liner and the outer wrapper to define an insulating cavity therebetween. The trim breaker includes a liner portion coupled with the inner liner, a wrapper portion coupled to the outer wrapper and an outer glazing member that extends between the liner and wrapper portions. An external surface of the outer glazing member defines a contact surface that is configured to receive a seal of an operable panel in a closed position.

Abstract: A refrigerator shelf includes a frame having laterally spaced-apart first and second side members, defining opposite first and second ends defining first and second portions of a front edge profile of the refrigerator shelf, respectively. A medial member extends between the first and second side members at respective locations between the first and second ends. A first substrate is received between the first and second side members, defines a first edge, and is moveable between an extended position with the first edge adjacent the first ends of the first and second members and a tucked position with the front edge spaced away from the first ends. A trim member extends along an edge of the second substrate and defines a third portion of the front edge profile that is aligned with and physically engages with the first and second portions when the second substrate is in the extended position.

Abstract: Provided is a refrigerator including: at least one temperature sensor; a memory storing controls for a plurality of levels; and a processor selecting a control, from among the controls, based on a temperature measured by the temperature sensor.

Abstract: Embodiments of apparatuses and methods for reforming of hydrocarbons including recovery of products are provided. In one example, a method comprises separating a reforming-zone effluent into a net gas phase stream and a liquid phase hydrocarbon stream. The net gas phase stream is separated for forming an H2-rich stream and a first liquid phase hydrocarbon stream. The H2-rich stream may be contacted with an adsorbent to form an H2-ultra rich stream and a gas stream. C3/C4 hydrocarbons are absorbed from the gas stream with the liquid phase hydrocarbon stream. The gas stream may be contacted with an H2/hydrocarbon separation membrane to separate the PSA tail gas stream and form an H2-rich permeate stream and an H2 depleted non-permeate residue stream.

Abstract: A process for drying grain wherein a fan cooperates with a heater to flow air through grain that is wetter than a target, wherein the fan is operated at full speed and the heater is varied in output to operably compensate for changes in the air and in particular to raise the amount of water vapor the circulating air removes from the grain.

Abstract: A dry box and a control method therefor, and a preparation method for an organic electroluminescent device are provided. The dry box includes a cavity and a hot plate arranged in the cavity. The hot plate includes a plurality of heating spots, the plurality of heating spots being arranged towards the hot plate to support a surface of a device to be dried, and some of the temperature of the plurality of heating spots being different and the heating spots being insulated from each other.

Abstract: A modular industrial energy transfer system includes a shell and at least one energy transfer unit coupled to the shell. The shell includes a plurality of sidewalls, a ceiling member coupled thereto, and a plurality of mounting structures disposed along the shell. The plurality of sidewalls and the ceiling member cooperate to define an interior volume to accommodate a work product. The at least one energy transfer unit is coupled to the shell via at least one of the plurality of mounting structures and is partially disposed through the shell to generate an airflow pattern through the interior volume of the shell.

Abstract: A chaotic stirring device combining plasma arc smelting and permanent magnet including a furnace body; the furnace body is provided therein with a water-cooled copper crucible; the center of an upper surface of the water-cooled copper crucible is a groove for placing raw metals, and the water-cooled copper crucible is internally a hollow cavity; a return pipe is disposed directly below the groove in the hollow cavity; an upper end of the return pipe is vertical upward, and is horizontally provided with a filter screen; a spherical magnet is placed between the filter screen and the groove; one side of the water-cooled copper crucible is provided with a first water inlet pipe and a first water outlet pipe; the first water inlet pipe is connected to the hollow cavity, and the first water outlet pipe is connected to the bottom of the return pipe.

Abstract: A method and system for heat recovery and/or power plant cooling, incorporating an ejector configured to transfer vapor from a generator to a condenser. The ejector includes a converging-diverging nozzle to create a low pressure zone that entrains a fluid. The ejector is within a cooling fluid cycle line in heat exchange combination with an exhaust flue gas. Two fluid flows of the fluid cycle line are mixed via the ejector into a combined fluid, wherein the ejector adjusts a temperature and/or pressure of the combined fluid. Condensing the combined fluid provides a cooling medium.

Abstract: A core arrangement for a heat exchanger includes a first core layer disposed along a first plane and having an inlet and outlet oriented along a first axis within the first plane and a first core stage disposed in fluid communication between the inlet and the outlet. The first core stage includes a first upstream fluid intersection downstream of and adjacent the inlet and having a first inlet continuation and a first bifurcation. The first core stage further includes a first downstream fluid intersection upstream of and adjacent the outlet and having a first outlet continuation and a first recombination. A plurality of first core tubes fluidly connect the first bifurcation to the first recombination. The first core layer further includes a second core stage disposed in fluid communication between the first inlet continuation and the first outlet continuation.

Abstract: A fire tube with three hollow tube sections, two of which are parallel to each other and one of which is perpendicular to and connects the ends of the first, two tube sections. The bottom-most tube section, which contains the burner, has an inner ceramic liner that is made up of one or more separate ceramic tubular sections. An upper set of cooling fins surrounds the top part of the bottom-most tube section, and a lower set of cooling fins surrounds the bottom part of the bottom-most tube section.