An air conditioning system, including a compressor, two outdoor heat exchange units, a liquid pipe used for communicating with indoor units, a high-pressure gas tube and a low-pressure gas tube; the air conditioning system further includes a valve assembly. One outdoor heat exchange unit has a first state in which one end thereof communicates with the high-pressure gas tube and another end thereof communicates with the liquid pipe, and has a second state in which one end thereof communicates with the low-pressure gas tube and the other end thereof communicates with the liquid pipe. Further disclosed is a control method for the air conditioning system.

An apparatus and a method for providing adequate cooling inside control box of an electrical equipment. A method includes receiving air from one or more air ducts in a first section wherein the first section is coupled with the one or more air ducts. The method also includes providing the air to a first fan associated with the first section and transferring the air by the first fan to one or more second fans. The method further includes receiving air from the one or more air ducts associated with the first section to one or more vents in the second section and transferring the air from one or more vents to the one or more louvers and the first fan. Air transferred to the one or more louvers and the first fan is further transferred to the one or more second fans.

Disclosed herein is an air conditioner. The air conditioner includes a housing having an inlet and an outlet, and having a first guide surface forming the outlet and a second guide surface facing the first guide surface provided therein, a heat exchanger configured to heat-exchange air suctioned through the inlet, a blower fan configured to suction air from the inlet, heat-exchange the air by passing air through the heat exchanger, and discharge air toward the outlet, and an airflow control unit provided to be movable between a first position adjacent to one end portion of the outlet from which air is discharged and a second position spaced apart from the end portion of the outlet from which air is discharged, and protruding from the first guide surface or the second guide surface when the airflow control unit placed at the first $\mathrm{position}.$

Disclosed herein is an air conditioner. The air conditioner includes a housing having an inlet and an outlet, and having a first guide surface forming the outlet and a second guide surface facing the first guide surface provided therein, a heat exchanger configured to heat-exchange air suctioned through the inlet, a blower fan configured to suction air from the inlet, heat-exchange the air by passing air through the heat exchanger, and discharge air toward the outlet, and an airflow control unit provided to be movable between a first position adjacent to one end portion of the outlet from which air is discharged and a second position spaced apart from the end portion of the outlet from which air is discharged, and protruding from the first guide surface or the second guide surface when the airflow control unit placed at the first $\mathrm{position}.$

An adiabatic cooling system includes a condenser coil, a plurality of adiabatic pads, a plurality of frames, and a pad pivoting system. Each frame is configured to hold a respective one of the plurality of adiabatic pads and to pivot about a respective one of a plurality of pivot points. The pad pivoting system is configured to rotate each one of the plurality of frames about the respective pivot point of the frame from an open position to a closed position, and to rotate each one of the plurality of frames about the respective pivot point of the frame from the closed position to the open position. When the plurality of frames are in the open position, intake air for the adiabatic cooling system is unimpeded by the plurality of adiabatic pads as the intake air enters the adiabatic cooling system and contacts the condenser coil.

A heating, ventilation, and/or air conditioning (HVAC) unit includes a heat exchange section having a plurality of panels defining an air flow path through the heat exchange section. The air flow path includes an upstream portion and a downstream portion, the upstream portion has a first cross-sectional area, and the downstream portion has a second cross-sectional area greater than the first cross-sectional area.

An outdoor unit for an air-conditioning apparatus includes a casing having an air inlet through which air enters the casing, an air-sending device disposed in the casing and configured to create a flow of air passing through the air inlet, a heat exchanger disposed between the casing and the air-sending device and exposed through the air inlet and including a plurality of fins spaced apart from each other, and a partition disposed in the casing and dividing a space in the casing into an air-sending device chamber containing the heat exchanger and the air-sending device and a machine chamber containing a compressor. The plurality of fins include an end fin group located at an end remote from the partition. The casing includes a wall having at least one vent that faces the end fin group and that is located along a side edge part defining an edge of the air inlet.

A wind baffle operable to control air movement to an air inlet of an air-conditioner, the wind baffle comprising: a frame defining an inlet side, an outdoor side opposite the inlet side, and a plurality of wall sections between the inlet side and the outdoor side; a back plate formed on the outdoor side; a first variable air vent formed on a first wall section and being configured to selectively pass or restrict a first air flow through the first variable air vent; a second variable air vent formed on a second wall section and being configured to selectively pass or restrict a second air flow through the second variable air vent; and a securing mechanism on the inlet side configured to attach the wind baffle to the air inlet such that the inlet side faces the air inlet, wherein the inlet side is unobstructed, allowing air to pass freely.

A wind baffle operable to control air movement to an air inlet of an air-conditioner, the wind baffle comprising: a frame defining an inlet side, an outdoor side opposite the inlet side, and a plurality of wall sections between the inlet side and the outdoor side; a back plate formed on the outdoor side; a first variable air vent formed on a first wall section and being configured to selectively pass or restrict a first air flow through the first variable air vent; a second variable air vent formed on a second wall section and being configured to selectively pass or restrict a second air flow through the second variable air vent; and a securing mechanism on the inlet side configured to attach the wind baffle to the air inlet such that the inlet side faces the air inlet, wherein the inlet side is unobstructed, allowing air to pass freely.

An air conditioner, including an outdoor unit and a control system, an air outlet being provided at the top of a box body of the outdoor unit. The air conditioner further includes a snow hood in communication with the air outlet, a rotation driving device connected to the snow hood, and a wind direction detection device provided on the box body. The snow hood is rotatably provided on the top of the box body, and the rotation driving device and the wind direction detection device both communicate with the control system.