An air filter and a method of air filtration using the air filter are described. The air filter may comprise a filter media adapted to capture and filter one or more impurities from air. Further, one or more sound wave generators are attached at one or more sides of the filter media. The one or more sound wave generators generate acoustic waves to be propagated into the filter media. The air filter may further comprise a plurality of sensors positioned before the filter media and after the filter media. Further at least one fan is positioned before or after the filter media. Further an IoT is configured to control frequency of the acoustic waves generated by the one or more sound waves generators, and interconnected with power signal control panel parallel, AHU to control rotational speed of the at least one fan based on value provided by the plurality of sensors.

An air filter and a method of air filtration using the air filter are described. The air filter may comprise a filter media adapted to capture and filter one or more impurities from air. Further, one or more sound wave generators are attached at one or more sides of the filter media. The one or more sound wave generators generate acoustic waves to be propagated into the filter media. The air filter may further comprise a plurality of sensors positioned before the filter media and after the filter media. Further at least one fan is positioned before or after the filter media. Further an IoT is configured to control frequency of the acoustic waves generated by the one or more sound waves generators, and interconnected with power signal control panel parallel, AHU to control rotational speed of the at least one fan based on value provided by the plurality of sensors.

An air purification device including a flow passage through which air circulates; an electrical precipitator unit that is disposed in the flow passage and that includes a discharge electrode having a body unit and a corona discharge unit for corona discharge which protrudes from the body unit, and a collecting electrode disposed opposing the discharge electrode; an ozone removal unit that is disposed in the flow passage, and that is capable of removing ozone included in the circulating air, and a control unit that switches between a first mode in which air from which ozone has been removed is supplied from a downstream section of the flow passage to the outside, and a second mode in which air including ozone is supplied from the downstream section of the flow passage to the outside.

An air conditioner is provided. The air conditioner includes a heat exchange module, at least one humidity sensor, and a controller. The heat exchange module includes a compressor, a first heat exchanger, an expansion valve, a second heat exchanger, and an absorbent disposed on an outer surface of the first and second heat exchangers. The controller is configured to control to stop a normal operation and perform a drying operation for supplying air to any one of the first and second heat exchangers serving as an evaporator when it is determined that a predetermined drying operation condition is satisfied based on humidity information of air passed through the any one of the first and second heat exchangers serving as the evaporator, during the normal operation in which the any one of the first and second heat exchangers serves as an evaporator and the other serves as a condenser.

Example embodiments of the present disclosure relate to a method of commissioning an HVAC system and a related unit. Some embodiments of the method include providing a unit of the HVAC system with a plurality of condensate outlets such that the unit may be installed in a plurality of orientations; installing the unit in a preferred orientation; selecting one of the condensate outlets from the plurality of outlets that is positioned to receive condensate based on the preferred orientation; attaching a condensate line to the selected one of the condensate outlets; and installing a sensor along the condensate line, the sensor configured to detect a presence of a refrigerant that is heavier than air and would flow with gravity along with the condensate collected by the unit.

Example embodiments of the present disclosure relate to a method of commissioning an HVAC system and a related unit. Some embodiments of the method include providing a unit of the HVAC system with a plurality of condensate outlets such that the unit may be installed in a plurality of orientations; installing the unit in a preferred orientation; selecting one of the condensate outlets from the plurality of outlets that is positioned to receive condensate based on the preferred orientation; attaching a condensate line to the selected one of the condensate outlets; and installing a sensor along the condensate line, the sensor configured to detect a presence of a refrigerant that is heavier than air and would flow with gravity along with the condensate collected by the unit.

An air conditioning system includes a plurality of first units each including a first fan configured to blow supply air into a target space. A second unit distributes the supply air to the plurality of first units through a duct. In the second unit, a heat exchanger subjects indoor air and outside air introduced by an outside air supply fan, to heat exchange. The second unit thus generates the supply air and sends the supply air to the duct. A controller controls at least the plurality of first fans so as to inhibit the supply air or the outside air from flowing out of an intake port, by setting a sum of airflow volumes from the plurality of first units to be equal to or more than an airflow volume from the outside air supply fan.

An air conditioning system includes a plurality of first units each including a first fan configured to blow supply air into a target space. A second unit distributes the supply air to the plurality of first units through a duct. In the second unit, a heat exchanger subjects indoor air and outside air introduced by an outside air supply fan, to heat exchange. The second unit thus generates the supply air and sends the supply air to the duct. A controller controls at least the plurality of first fans so as to inhibit the supply air or the outside air from flowing out of an intake port, by setting a sum of airflow volumes from the plurality of first units to be equal to or more than an airflow volume from the outside air supply fan.

There is provided a method of controlling an air-conditioning system associated with a building for optimizing a plurality of building performance parameters in providing an environment with respect to a zone of the building, the method comprising: obtaining zone environmental condition information including zone temperature data associated to the zone, and cooling air temperature data associated to an air handling unit associated to the zone; obtaining, from a zone model generator, zone cooling load parameters associated to the zone with respect to a plurality of time periods and a zone thermal dynamic model; obtaining, from a scheduler, a sequence of optimal cool air supply rates with respect to a plurality of subsequent time periods with respect to the zone determined based on a multi-component cost function including a plurality of components relating to the plurality of building performance parameters; determining, based on the zone thermal dynamic model, a sequence of zone controller set-points corresponding to the sequence of optimal cool air supply rates with respect to the zone using the zone cooling load parameters, the sequence of optimal cool air supply rates, the zone temperature data and the cooling air temperature data associated to the air handling unit; and sending the sequence of zone controller set-points to a zone controller for controlling a temperature of the zone.

A floor-standing air conditioner includes a first member that opens or closes a first flow path, a second member that opens or closes a second flow path, and a control unit that controls a fan, the first member, and the second member. The control unit is configured to perform a first blowing process of blowing out air from the first blow-out port with the first flow path opened by the first member and the second flow path closed by the second member, a second blowing process of blowing out air from the second blow-out port with the first flow path closed by the first member and the second flow path opened by the second member, and a blow-out port switching process of blowing out air from both the first blow-out port and the second blow-out port during switching between the first blowing process and the second blowing process.