Abstract: A decorative removable lighting enclosed clip made for mounting a light to a support surface such as gutters, shingles or a building structure. The enclosed clip allows for an aesthetically pleasing display of lights with rapid and easy installation and removal of the lighting. This eliminates falling debris from broken clips or clips that fall off the lights during the removal process. A support tab is inserted between the side portions of the structure, at longitudinally spaced intervals along the strip, and are frictionally gripped and retained by the facing side portions of the gutter, shingle or structure. The clips have enclosed end portions which support the light elements of a decorative light string along structure. The enclosed clip is capable of mounting onto a wide variety of gutters, eaves and building structures. The spacing is adjustable and provides a plurality of discrete angular positions.

Abstract: An apparatus for retrofitting a HID lighting system with LED fixtures includes an aiming device for aiming the retrofit LED fixtures, a snout for spacing the retrofit LED fixtures away from a possibly interfering structure, and an extended knuckle for spacing the retrofit LED fixtures away from a possibly interfering structure.

Abstract: A separated table lamp, comprising: a base, a first electrical connection portion being arranged on the base, and an electronic control module electrically connected to the first electrical connection portion being arranged inside the base; a lamp head comprising a light source assembly; and a foldable bracket, one end of the foldable bracket being rotatably connected to the lamp head, and the other end of the foldable bracket being detachably connected to the base. The foldable bracket is internally provided with a cable channel for a cable to pass through, a second electrical connection portion is arranged on the end of the foldable bracket connected to the base, one end of the cable is electrically connected to the light source assembly, and the other end of the cable is electrically connected to the second electrical connection portion.

Abstract: A light device includes one or more light arms. The light arms are rotatable and extendable. The light arms rotate based on a rotation hinge which connects the housing to the one or more light arms. The light arms extend by an extension hinge disposed between a first portion and a second portion of the light arms. The light arms may include a plurality of light elements which emit light for photography and videography purposes.

Abstract: An apparatus for retrofitting a HID lighting system includes using existing components of previously installed HID lighting systems such as its ballasts while replacing some capacitors to adjust the power supplied to a retrofit LED luminaire. Unused ballast drivers are removed, and a self-contained ballast driver assembly is mounted into the electronic control enclosure of the previously installed lighting system. Some of the retrofit LED luminaires include an uplighting lens, an optic, or a diffuser for providing uplight. An aiming bracket and an aiming plate allow for the horizontal aiming angle of a light luminaire to be set.

Abstract: An apparatus for retrofitting a HID lighting system includes using existing components of previously installed HID lighting systems such as its ballasts while replacing some capacitors to adjust the power supplied to a retrofit LED luminaire. Unused ballast drivers are removed, and a self-contained ballast driver assembly is mounted into the electronic control enclosure of the previously installed lighting system. Some of the retrofit LED luminaires include an uplighting lens, an optic, or a diffuser for providing uplight. An aiming bracket and an aiming plate allow for the horizontal aiming angle of a light luminaire to be set.

Abstract: An apparatus for retrofitting a HID lighting system includes using existing components of previously installed HID lighting systems such as its ballasts while replacing some capacitors to adjust the power supplied to a retrofit LED luminaire. Unused ballast drivers are removed, and a self-contained ballast driver assembly is mounted into the electronic control enclosure of the previously installed lighting system. Some of the retrofit LED luminaires include an uplighting lens, an optic, or a diffuser for providing uplight. An aiming bracket and an aiming plate allow for the horizontal aiming angle of a light luminaire to be set.

Abstract: An apparatus for retrofitting a HID lighting system includes using existing components of previously installed HID lighting systems such as its ballasts while replacing some capacitors to adjust the power supplied to a retrofit LED luminaire. Unused ballast drivers are removed, and a self-contained ballast driver assembly is mounted into the electronic control enclosure of the previously installed lighting system. Some of the retrofit LED luminaires include an uplighting lens, an optic, or a diffuser for providing uplight. An aiming bracket and an aiming plate allow for the horizontal aiming angle of a light luminaire to be set.

Abstract: An LED light includes a housing. The housing includes a bulb shaped upper end extending from a nonconductive threaded lower end. The interior of the housing has a charging port extending from the threaded lower end. A battery enclosure is electrically coupled to the charging port. A first PCB board is positioned within upper end. A power circuit is formed on the first PCB board and is electrically coupled to the battery enclosure to provide DC power to the first PCB board. A second PCB board is positioned within upper end of the housing; stacked over the first PCB board. The first PCB board is electrically connected to the second PCB board. A plurality of LEDs are arranged on the second PCB board to direct light from a distal end of the upper end of the housing in response to receiving a control signal and power from the second PCB board.

Abstract: An apparatus for retrofitting a HID lighting system includes using existing components of previously installed HID lighting systems such as its ballasts while replacing some capacitors to adjust the power supplied to a retrofit LED luminaire. Unused ballast drivers are removed, and a self-contained ballast driver assembly is mounted into the electronic control enclosure of the previously installed lighting system. Some of the retrofit LED luminaires include an uplighting lens, an optic, or a diffuser for providing uplight. An aiming bracket and an aiming plate allow for the horizontal aiming angle of a light luminaire to be set.

Abstract: A lighting device with multiple light sources includes a housing, a first illuminating source, a second illuminating source, a lens assembly, a light reflecting and transmitting filter, a first power switch, a second power switch, and a power source. The first illuminating source and the second illuminating source are mounted within the housing and perpendicularly positioned of each other. The lens assembly is operatively coupled to the housing, wherein the lens assembly focus the first illuminating source and the second illuminating source between a spot position and a collimating potion. The light reflecting and transmitting filter is angularly mounted in between the first illuminating source and the second illuminating source, The first power switch and the second power switch are mounted onto the housing. The power source being electrically connected to the first illuminating source through the first power switch and the second illuminating source through the second power switch.

Abstract: A versatile and convenient holiday season or occasion decoration system that includes a sleeve-like body made of a flexible and stretchy material, with a plurality of strips integrated to it. The strips have pre-manufactured holes, enabling users to attach the system securely to a variety of structures using fasteners such as clips or strings. The decoration system also includes a decoration kit having a plurality of decorative items configured to detachably attach to the sleeve- like body on the integrated hooks, wherein the decorative items represent different cultural and religious holidays, enabling users to customize the system according to their personal preferences and cultural traditions. In one embodiment, the sleeve-like body has a continuous LED light strip attached on its exterior surface that includes a plurality of LED lights designed to illuminate in different colors, and a color changing button positioned on one end of the sleeve-like body.

Abstract: An electric steam generating device includes a cast body, a heating element, and a fluid passage. The heating element is at least partially surrounded by the cast body. The fluid passage passes through the cast body and is spaced apart from the heating element. The cast body transfers heat from the heating element to the fluid passage, and the fluid passage includes a first portion having a first size and a second portion having a second size.

Abstract: A system and method for continuously treating blowdown water derived from one or more boilers using a microwave reactor, a cooling system, and an ion exchange filter to remove insoluble solids, organic matter, bacteria, and other impurities. The recovered water is stored, treated with a corrosion inhibitor, an oxidizing biocide, a non-oxidizing biocide, and a scale inhibitor, before being recycled for reuse in the boiler system.

Abstract: A flame producing assembly is disclosed which comprises a fuel container and a fuel nozzle arrangement. The fuel nozzle arrangement is configured to produce a flame and comprises a fuel supply channel and a fuel nozzle having a fuel nozzle opening. The fuel supply channel extends from the fuel container to the fuel nozzle opening of the fuel nozzle. The fuel nozzle opening is oriented along an axis A in a flame direction f. The wind resistant flame producing assembly further comprises a nozzle arrangement, a compressed fluid supply for storing compressed fluid, and a compressed fluid valve. The nozzle arrangement has a nozzle outlet which at least partially encircles the fuel nozzle arrangement and is suppliable with compressed fluid from the compressed fluid supply via activation of the compressed fluid valve.

Abstract: The present disclosure provides a combustion furnace with adjustable firepower, including a furnace body. The furnace body is provided with a combustion chamber in which combustible materials are placed. The furnace body further includes an adjusting mechanism and an air inlet, the air inlet is provided on the side wall of the furnace body, and communicated with the combustion chamber so that external air enters the combustion chamber through the air inlet. The adjusting mechanism is configured to control the air inlet to be turned on or off. Through the above structural arrangement, users can control the air inlet to be turned on or off by controlling the adjusting mechanism, so as to adjust the firepower of the combustion furnace.

Abstract: A deflector assembly for a combustor defining an operational fluid flow. The deflector assembly includes an upstream surface and a downstream surface opposite the upstream surface. One or more fastening mechanisms each extends through the deflector assembly. One or more cooling holes extend through the deflector assembly from the upstream surface to the downstream surface. The one or more cooling holes are located about the one or more fastening mechanisms to operably direct cooling air about the one or more fastening mechanisms at the downstream surface.

Abstract: A dome-deflector assembly for a combustor of a gas turbine includes a dome portion having a dome-side swirler opening therethrough, and a deflector portion having a deflector-side swirler opening therethrough. The dome portion and the deflector portion are connected together to form a dome-deflector cavity therebetween. The deflector portion includes a first-side surface and a second-side surface, the second-side surface being arranged within the dome-deflector cavity, and the second-side surface including a plurality of stress-relief contours arranged in a pattern about the deflector-side swirler opening.

Abstract: A connected combustion system detects a failure in any of combustors connected in the system and each including a burner with its combustion state used for feedback. Each combustor includes a combustion sensor that detects the combustion state in the burner, and a detection value is used for feedback. When the detection value deviates from a predetermined normal range, at least one of a fuel gas supply or an air supply is corrected to cause the detection value to be within the normal range. The combustion state in the burner is thus adjusted. When the combustion sensor in any of the combustors has a detection value deviating from the normal range and the combustion sensor in another combustor operating simultaneously with the above combustor has a detection value within the normal range, the combustor having the detection value deviating from the normal range is determined to have a failure.

Abstract: In accordance with at least one aspect of this disclosure, a system includes a fuel nozzle, the fuel nozzle. The fuel nozzle includes, a nozzle body defining a spray axis from a nozzle inlet to a nozzle outlet and a fuel circuit defined in the nozzle body configured to issue a fuel flow from an outlet orifice into a combustor. The outlet orifice is defined along an injection axis, wherein the injection axis is laterally offset from a radius of the spray axis for imparting a tangential direction onto the fuel flow issuing from the fuel circuit.

Abstract: In accordance with at least one aspect of this disclosure, a nozzle for a fuel injector includes, a nozzle body defining a central axis from a nozzle inlet to a nozzle outlet. A first fuel circuit is defined in the nozzle body configured to issue a first fuel flow from a first outlet orifice into a combustor. A second fuel circuit is defined in the nozzle body radially outward from the first fuel circuit configured to issue a second fuel flow from a second outlet orifice at a prefilmer surface of the nozzle body. A third fuel circuit is defined in the nozzle body radially outward from the second fuel circuit configured to issue a third fuel flow from a third outlet orifice at the prefilmer surface of the nozzle body. In embodiments, the first fuel circuit, the second fuel circuit, and the third fuel circuit can all be fluidly isolated from one another within the nozzle body.

Abstract: A combustor for a gas turbine engine, the gas turbine engine defining a longitudinal centerline extending in a longitudinal direction, a radial direction extending orthogonally outward from the longitudinal centerline, and a circumferential direction extending concentrically around the longitudinal centerline, the combustor including: a forward liner segment; an aft liner segment disposed downstream from the forward liner segment relative to a direction of flow through the combustor, the forward and aft liner segments at least partially defining a combustion chamber; and an intermediate member disposed at least partially between the forward and aft liner segments and extending in the circumferential direction.

Abstract: A biomass furnace including a housing, a burn chamber configured to hold a biomass fuel, a fuel loading door to open and close a fuel loading opening, and a secondary air system that includes a main tube and a plurality of branch tubes oriented transverse to the main tube. The main tube includes a front opening, a main tube interior in gaseous communication with the front opening, and at least one aperture in gaseous communication with the front opening and configured to direct secondary air downwardly. Some or all of the branch tubes include at least one aperture in gaseous communication with the front opening of the main tube and which is configured to direct secondary air downwardly.

Abstract: An electric grill includes a firebox divided into a plurality of zones. Each zones has an electric heating element, and a temperature probe. A controller having operative control to detect temperatures using the temperature probes adjusts power to the electric heating element for each of the plurality of zones.

Abstract: The present application relates to the field of cooking equipment technologies, and specifically to a cooking appliance, including a box body, a door body, and a control panel case. The box body includes a housing, a cooking cavity located in the housing, and an electric chamber located on one side of the cooking cavity. The housing includes a top plate. An exhaust port is provided in the top plate. A first fan is disposed in the electric chamber. The door body and the control panel case are disposed on a front side of the cooking cavity. A cooling air inlet is provided in the door body and/or in the control panel case. The cooling air inlet, the electric chamber, the cooking cavity and the exhaust port are in fluid communication. The cooling air inlet is provided in the door body and/or the control panel case, and the exhaust port is provided in the top plate of the housing.

Abstract: A cooking apparatus including a cooktop including an inlet; a chamber housing to which a duct is connectable, the chamber housing coupled to the cooktop to form a chamber under the inlet; and a fan device inside the chamber housing, the fan device including a fan and a fan housing, the fan housing including a first housing inlet opening towards the cooktop, and a second housing inlet opening in an opposite direction, wherein the fan device is operable to, with the duct being connected to the chamber housing, draw air through the inlet into the chamber, so that some of the air drawn into the chamber is drawn through the first housing inlet into the fan housing, and other of the air drawn into the chamber is drawn through the second housing inlet into the fan housing, and discharge the air in the fan housing through the duct.

Abstract: An oven includes a cooking chamber, a blower, an air plenum configured to receive air from the blower, and first and second jet plates disposed within the cooking chamber and configured to direct a flow of air from the air plenum into the cooking chamber to cook the food product. Each one of the first and second jet plates includes one or more openings. At least one of the first and second jet plates is movable relative to the other jet plate to provide, in a first configuration, an impingement air stream to the cooking chamber and, in a second configuration, a convection air stream to the cooking chamber. At least one of the first and second jet plates is movable relative to the other jet plate to periodically oscillate, during a single cook setting, to provide an impingement air stream to first and second areas of a food product.

Abstract: A heated water delivery system comprising: a system inlet and a system outlet, with a primary flow path and a secondary flow path in a parallel configuration in between; the primary flow path comprising a primary source of heated water; the secondary flow path comprising a secondary source of heated water; the system further comprising switching means comprising a valve disposed within the primary flow path, the switching means being arranged to deliver heated water from the primary source when a temperature of the water from the primary source is greater than a threshold temperature, and being arranged to selectively deliver heated water from the at least one secondary source when the temperature of the water from the primary source is less than a threshold temperature. The switching from one source to another is determined by the relative change in pressure drop of the flow paths.

Abstract: The present disclosure is directed to systems and methods for automatically detecting a leak of a closed loop hydronic boiler system having a makeup water inlet line. The system may include a fluid flow sensor configured to sense fluid flow through the makeup water inlet line, and optionally a pressure sensor and/or a water chemistry sensor. In addition, the system may include a processor configured to detect positive movement of makeup water through the makeup water inlet line indicative of a leak of the hydronic boiler system based on the measured fluid flow, and cause a display to display information indicative of the leak upon detection of positive movement of makeup water through the makeup water inlet line. In some embodiments, the processor further may automatically adjust operations of the hydronic boiler system responsive to detection of the leak.

Abstract: Provided is a wall-mounted air conditioner, including a casing and a heat exchanger. The heat exchanger is arranged in the casing; the casing is internally provided with an air duct (30); the air duct has an air inlet and an air outlet; and at least part of the air inlet is located on the front of the casing. By configuring at least part of the air inlet of the wall-mounted air conditioner to be located on the front of the casing, the air in the environment does not need to enter the air duct from directly above the casing. In this way, the distance between the wall-mounted air conditioner and an indoor top wall can be greatly reduced or eliminated, and the indoor space utilization rate can be increased.

Abstract: An indoor environmental control and air distribution system for a building includes: an air handling unit; a manifold connected to the air handling unit having a chamber formed by a plurality of walls and a plurality of orifices formed through at least one of the walls; air distribution conduits each independently having a first end connected to the orifices of the manifold and a second end extending out from the manifold into different zones throughout the building; and an airflow modulating device having one or more airflow regulating dampers independently configured to move into at least two positions in which each position provides a different percentage of total air volume to each air distribution conduit. A method of using the indoor environmental control and air distribution system is also included.

Abstract: Provided is a user-friendly air conditioning system. An air conditioning system comprises: a fan filter unit that has an air supply fan for supplying air to a clean room; and a fan filter unit that has an air return fan for returning or the like of air from the clean room. The air conditioning system further comprises: a pressure sensor that is installed in the clean room; and a control device that controls one of the air supply fan and the air return fan on the basis of the detection value of the pressure sensor, and controls the other fan at a constant speed. It is possible to switch between controlling one of the air supply fan and the air return fan on the basis of the detection value of the pressure sensor and the other fan at a constant speed.

Abstract: The cooling systems and methods of the present disclosure involve modular fluid coolers and chillers configured for optimal power and water use based on environmental conditions and client requirements. The fluid coolers include wet media, a first fluid circuit for distributing fluid across wet media, an air to fluid heat exchanger, and an air to refrigerant heat exchanger. The chillers, which are fluidly coupled to the fluid coolers via pipe cages, include a second fluid circuit in fluid communication with the air to fluid heat exchanger and a refrigerant circuit in thermal communication with the second fluid circuit and in fluid communication with the air to refrigerant heat exchanger. Pipe cages are coupled together to allow for expansion of the cooling system when additional cooling capacity is needed. The fluid coolers and chillers are configured to selectively operate in wet or dry free cooling mode, partial free cooling mode, or mechanical cooling mode.

Abstract: An air conditioning (AC) system includes hot thermal storage and cold thermal storage. The cold thermal storage of the AC system can be used to provide cooling (e.g., air conditioning) while consuming significantly less power (e.g., only consuming power to run a fan and a pump of the AC system). The hot thermal storage of the AC system can be used to preheat inlet water to a water heater or boiler, reducing the energy (e.g., consumption of electricity if an electric water heater, consumption of gas, if a gas water heater) needed for the water heater or boiler to provide hot water.

Abstract: An evaporative-cooling window fan is configured to draw air from outdoors to indoors such that it is cooled and filtered as it passes there-through.

Abstract: A humidifier assembly includes a crossflow fan located in an air flow chamber at a lateral side of the air flow chamber and extends along a fan axis that is oriented in a generally vertical direction. The crossflow fan has elongate blades that extend generally parallel to the fan axis in an array around the fan axis to define an interior space along the fan axis. The crossflow fan is configured to define an inlet area at which the air is drawn from the air flow chamber into the interior space through the elongate blades, and to define an outlet area at which the air is expelled from the interior space toward the outlet through the elongate blades.

Abstract: Disclosed is an ice-misting cooling fan, including a fan frame, where a first misting device is arranged inside the fan frame; the first misting device is provided with a first placing opening, a second placing opening, a cold air outlet, a first drainage opening and a second drainage opening; the first placing opening and the second placing opening are covered by an end cover that is movably connected to the fan frame; a fan is arranged on an outer side of the cold air outlet; a base is arranged at the bottom of the fan frame, and a second misting device is arranged at a position of the base relative to the fan, and a water collection tank is arranged at a position of the base relative to the first drainage opening; and the second misting device is provided with a water inlet and an air outlet.

Abstract: A fan comprising a motor, an impeller, a curb cap, a support pan, a first conduit, and a second conduit. The impeller is rotatably coupled to the motor about a longitudinal axis. The curb cap is configured for interaction with a roof curb. The curb cap includes an airflow opening, a first conduit opening, and a second conduit opening. The support pan supports the motor. The first electrically insulative conduit extends between the support pan and the first conduit opening along a first conduit axis. The second electrically insulative conduit extends between the support pan and the second conduit opening along a second conduit axis. In a plane perpendicular to the longitudinal axis, a central angle between the first conduit axis, the longitudinal axis, and the second conduit axis is greater than or equal to ninety degrees and less than or equal to one hundred and eighty degrees.

Abstract: An air-conditioning apparatus includes a housing having an outside air port, an air supply port, a return air port, and an exhaust port. The air-conditioning apparatus also includes: an outside air passage to make the outside air port and the air supply port communicate with each other; an exhaust air passage formed in the housing in a separated manner from the outside air passage to make the return air port and the exhaust port communicate with each other; an indoor heat exchanger disposed in the outside air passage; the air-sending device disposed in the outside air passage, and configured to generate an air flow directed toward the room from the outside air port via the air supply port and the air supply duct during operation; and an air supply damper being open during the operation of the air-sending device and being closed during a stop of the air-sending device.

Abstract: The present disclosure describes an apparatus including an air purifier having a housing. In some examples, the air purifier includes an intake and an outlet. According to some examples, the intake and the outlet are connected by an air passage. The air purifier may include a filtration system comprising a plurality of filters. In some examples, the filtration system is configured such that an airflow enters the air passage through the intake, passes through each one of the plurality of filters subsequent to entering the intake, and exits the air passage through the outlet subsequent to passing through the plurality of filters. According to some examples, the plurality of filters comprises a chemical adsorption filter.

Abstract: The present invention includes an air cleaning device and a smart power equipment; the air cleaning device includes an air intake device, an air discharge device, an air purifying device, an air extractor device, an ultraviolet light catalyst sterilizing device, and a power supply device electrically connected to the air extractor device and the ultraviolet light catalyst sterilizing device. The smart power equipment is provided with an artificial intelligence movement system, an electric storage, and a charging base that enables docking with the artificial intelligence movement system for charging the electric storage device. The smart power equipment moves and, according to the air pollution level setting, activates the air extractor device to circulate the air while carrying out air purification by means of an ultraviolet light catalyst sterilizing device.

Abstract: Apparatuses, systems, methods, and computer program products for carbon dioxide based ventilation monitoring are described. An apparatus may include a carbon dioxide sensor, a processor, and/or a memory storing computer program code executable by the processor to perform operations. An operation may include interpolating a ventilation metric for an environment of a carbon dioxide sensor based at least partially on data from the carbon dioxide sensor using carbon dioxide as a proxy for ventilation. An operation may include performing a predefined action based on a ventilation metric.

Abstract: Apparatuses, systems, methods, and computer program products for carbon dioxide based ventilation monitoring are described. An apparatus may include a carbon dioxide sensor, a processor, and/or a memory storing computer program code executable by the processor to perform operations. An operation may include interpolating a ventilation metric for an environment of a carbon dioxide sensor based at least partially on data from the carbon dioxide sensor using carbon dioxide as a proxy for ventilation. An operation may include performing a predefined action based on a ventilation metric.

Abstract: A detection method for an air-conditioning system includes detecting whether the input power of the compressor of the air-conditioning system is lower than the power threshold. The method includes obtaining the evaporation saturation temperature of the evaporator of the air-conditioning system and obtaining the condensation saturation temperature of the condenser of the air-conditioning system when the input power is lower than the power threshold. When detecting that the evaporation saturation temperature is greater than the condensation saturation temperature, the method includes determining that an abnormal phase change is occurring and operating the compressor in the full-speed mode.

Abstract: A controller is configured to operate a heating, ventilation, and air conditioning (HVAC) system based on a first plurality of particulate matter measurements and a second plurality of particulate matter measurements. The controller is configured to determine an air filter efficiency for an air filter based on the received first plurality of particulate matter measurements and the received second plurality of particulate matter measurements. The controller is further configured to determine if a quantity of particulate matter in an airflow exceeds a first threshold value based on the received second plurality of particulate matter measurements. In response to determining that the quantity of particulate matter in the airflow does exceed the first threshold value, the controller is configured to transmit a notification indicating an action to inspect the air filter.

Abstract: An air conditioner including an indoor controller configured to receive an operation command from a user, and generate a plurality of first communication signals corresponding to the operation command; an outdoor unit; and a main controller configured to connect to the indoor controller and the outdoor unit, receive the plurality of first communication signals, and convert the plurality of first communication signals into a single second communication signal by combining the plurality of first communication signals, and transmit the single second communication signal to the outdoor unit to control operation of the outdoor unit. The outdoor unit is configured to receive the single second communication signal, and operate based on the single second communication signal.

Abstract: An air conditioning system comprises an air conditioner, a remote monitoring device to monitor the air conditioner, and a server device to communicate with the remote monitoring device. The server device comprises a communication unit to transmit and receive data to and from the remote monitoring device, and a parser processing unit to perform a process related to monitoring of the air conditioner by the remote monitoring device.

Abstract: A controller is configured to operate a heating, ventilation, and air conditioning (HVAC) system based on a plurality of concentration measurements received from a gas sensor, wherein the gas sensor is disposed within a sensor housing upstream of an evaporator coil. The controller is configured to receive the plurality of concentration measurements and determine if a concentration of total volatile organic compounds (TVOCs) in an airflow exceeds a first threshold value. The controller is further configured to operate the HVAC system in a second mode of operation to increase ventilation in response to determining that the concentration of TVOCs in the airflow does exceed the first threshold value, wherein a volume of air is introduced into and discharged from the HVAC system during the second mode of operation.

Abstract: An air handler includes a housing with a heat exchanger core. The housing includes a faceplate, a roof panel, a base panel, a first side panel, and a second side panel. A first tunnel and a second tunnel are connected to the housing at the faceplate. A septum protrudes from the faceplate and connects the core at a front edge. The air handler further includes a first recirculation path and a second recirculation path inside the housing. The first and second recirculation paths are defined by the septum, the housing, and the core. The first and second recirculation paths are configured to direct a portion of airflow from the first tunnel to the second tunnel. The air handler further includes a first damper and a second damper disposed on the faceplate and configured to obstruct the first recirculation path and the second recirculation path respectively.

Abstract: Disclosed herein is a ceiling-type air conditioner including: an upper housing having a cylindrical shape, a heat exchanger having in an annular shape and disposed inside the upper housing, a blowing fan disposed on the inside of the heat exchanger and configured to draw in air and heat exchange the drawn-in air with the heat exchanger.