Disclosed herein is an air conditioner and a control method thereof. The air conditioner includes: a housing including a base, a first heat exchanger disposed inside the housing and configured to exchange heat with outdoor air, a second heat exchanger disposed inside the housing and configured to exchange heat with indoor air, a compressor configured to compress a refrigerant for a heat exchange operation performed by the first heat exchanger and the second heat exchanger, a first fan disposed inside the housing and configured to move air along a flow path passing through the first heat exchanger, a drainage device configured to move condensed water condensed on the second heat exchanger inside the housing and collected in the base to the first heat exchanger, and a controller including at least one processor, comprising processing circuitry, individually and/or collectively, configured to, based on the stop of the operation of the compressor, control the drainage device to move the condensed water collected in the base to the first heat exchanger during a drainage time determined based on an operation time of the compressor, and to control the first fan to move air during the drainage time.

A controller device for a heating, ventilation, and air conditioning (HVAC) system may output, while in a first state, a first user interface for display at a display device, where the first user interface includes first information at a first output size. The controller device may determine, while in the first state and based at least in part on whether an elapsed time since a most recent indication of user input received at a user input device exceeds a timeout period, that no users are physically proximate to the controller device. The controller device may, in response: transition the controller device from the first state to a second state and output a second user interface at the display device, where the second user interface comprises second information at a second output size that is larger than the first output size.

A heat exchange ventilator includes: a temperature adjustment coil provided downstream of the heat exchanger in a supply air passage to heat or cool supply air; a supply air temperature measurement unit provided downstream of the temperature adjustment coil in the supply air passage to measure a supply air temperature; and a control unit controlling operation of the blower unit and the temperature adjustment coil. The control unit performs blowing temperature moderation control of performing ventilation by controlling operation of at least one of the blower unit and the temperature adjustment coil to moderate blowing temperature of the supply air blown out from the casing, based on a result of comparison between a lower limit blowing temperature of the supply air blown out from the casing, an upper limit blowing temperature of the supply air blown out from the casing, and the supply air temperature.

A method for controlling an air conditioner includes receiving, by the air conditioner, first position information sent by a terminal and updating position information of the air conditioner from second position information to the first position information. The first position information is obtained by a positioning module of the terminal positioning the air conditioner.

An environmental control system for a building, the system including a vent. The vent includes one or more louvers configured to change position between an open position and a closed position to permit air from the air duct to enter a zone of the building or stop the air from entering the zone and a vent circuit configured to operate the one or more louvers based on one or more control commands. The system includes a controller device including a processing circuit configured to receive a selection of an operating profile from a plurality of predefined operating profiles for the vent, each of the plurality of predefined operating profiles indicating an intended use of the zone, determine, based on the operating profile, the one or more control commands, and cause the vent circuit to operate the one or more louvers based on the one or more control commands.

Disclosed are systems and methods for conditioning air using a liquid-to-air membrane energy exchanger (LAMEE) as a pre-dryer, in combination with a direct evaporative cooler (DEC). The LAMEE and DEC can be arranged inside a process plenum configured to receive and condition air for delivery to an enclosed space. The LAMEE can circulate a liquid desiccant to remove moisture from the air, before passing the air through the DEC. As a result, the DEC can cool the air to lower temperatures and improve overall efficiency. In an example, a regeneration system can regenerate at least some of the liquid desiccant prior to recirculation through the LAMEE. In an example, the DEC can use removed water recovered in regeneration as make up water for the DEC. In an example, a liquid to air or liquid to liquid heat exchanger can cool the liquid desiccant, prior to recirculation through the LAMEE.

The humidifier includes a humidifying member, a storage water tank, a circulating water tank, a residual water tank, a supply pump configured to supply water accommodated in the storage water tank to the circulating water tank, a circulating pump configured to supply water accommodated in the circulating water tank to the humidifying member. A fan configured to blow air toward the humidifying member and thereby cause water evaporated to be discharged outside the humidifier, an internal pipe configured to form a flow passage through which water not evaporated by the humidifying member is recovered to the circulating water tank, a drainage member configured to selectively discharge water accommodated in the circulating water tank to the residual water tank, and a controller configured to operate the humidifier in humidity mode based on the water level in the storage water tank.

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.