Multi-unit cooling systems and structures thereof for residential, commercial, or other buildings. In one embodiment, a support duct system comprises a support duct frame including a longitudinal axis and at least one mounting bracket support, each of the at least one mounting bracket support being movable relative to the longitudinal axis of the support duct frame; and at least one mounting bracket coupled to a corresponding one of the at least one mounting bracket support, each of the at least one mounting bracket being removably couplable to a corresponding cooling unit. Each of the cooling units is independently rotatable relative to the longitudinal axis of the support duct frame.

A greenhouse-linked air conditioning system includes a first greenhouse through which sunlight is transmitted and in which plants are grown, a second greenhouse through which sunlight is not transmitted and in which plants are grown, an indoor space excluding the first and second greenhouses in a building, a sunlight panel formed outside the first greenhouse and generating power using the sunlight, an auxiliary light source connected to the sunlight panel to provide light to the second greenhouse, and an air conditioning unit configured to connect the first and second greenhouses and the indoor space and selectively exchange air, humidity, and energy between the first and second greenhouses and the indoor space.

An air handler, comprising: a heating and cooling coil to exchange heat with input air to generate conditioned air; an air diffuser to diffuse the conditioned air to generate diffused air; and an air blower to draw the input air into the air handler via an air inlet, pass the input air over the heating and cooling coil, pass the conditioned air through the diffuser, and expel the diffused air through an air outlet as output air, wherein the air diffuser contains one or more baffles to create two or more air passages that operate to control the expansion and reduction of kinetic energy of the conditioned air to generate the diffused air, a first direction represents a direction of a shortest line between the air blower and the outlet, the air diffuser passes air in a second direction displaced from the first direction by a deflection angle.

An air handler, comprising: a heating and cooling coil to exchange heat with input air to generate conditioned air; an air diffuser to diffuse the conditioned air to generate diffused air; and an air blower to draw the input air into the air handler via an air inlet, pass the input air over the heating and cooling coil, pass the conditioned air through the diffuser, and expel the diffused air through an air outlet as output air, wherein the air diffuser contains one or more baffles to create two or more air passages that operate to control the expansion and reduction of kinetic energy of the conditioned air to generate the diffused air, a first direction represents a direction of a shortest line between the air blower and the outlet, the air diffuser passes air in a second direction displaced from the first direction by a deflection angle.

Provided is an air conditioning system that uses ducts to supply conditioned air to a plurality of places inside a building, and is configured to counteract air backflow that occurs in ducts. A heat exchanger unit (10) includes a use side heat exchanger (11). A plurality of ducts (20) are connected to the heat exchanger unit (10). A plurality of fan units (30) suction conditioned air from the heat exchanger unit (10), and supply the conditioned air to a plurality of air outlets (71) through the plurality of ducts (20). A differential pressure sensor (121) acting as a detection device detects air backflow proceeding from at least one air outlet (71) among the plurality of air outlets (71) toward the heat exchanger unit (10) in a plurality of distribution flow paths including the plurality of ducts (20), the plurality of fan units (30), and the air outlets (71) of a plurality of outlet units (70).

Provided is an air conditioning system that uses ducts to supply conditioned air to a plurality of places inside a building, and is configured to counteract air backflow that occurs in ducts. A heat exchanger unit (10) includes a use side heat exchanger (11). A plurality of ducts (20) are connected to the heat exchanger unit (10). A plurality of fan units (30) suction conditioned air from the heat exchanger unit (10), and supply the conditioned air to a plurality of air outlets (71) through the plurality of ducts (20). A differential pressure sensor (121) acting as a detection device detects air backflow proceeding from at least one air outlet (71) among the plurality of air outlets (71) toward the heat exchanger unit (10) in a plurality of distribution flow paths including the plurality of ducts (20), the plurality of fan units (30), and the air outlets (71) of a plurality of outlet units (70).

A method of controlling a central air conditioning system includes, when a first air volume determined based on humidity in each of a plurality of rooms is less than a second air volume determined based on air quality in the room, causing a conveyor to convey air with a second air volume determined for a first room to the first room and convey air with a third air volume to a second room other than the first room, the third air volume being obtained by correcting the first air volume determined for the second room.

Embodiments of the present disclosure include methods and systems of circulating air in an enclosed environment. In such embodiments, the system may comprise an air handling unit (AHU), the AHU including an indoor air inlet to receive an indoor airflow from the enclosed environment and an indoor air outlet to expel the indoor airflow, a conditioning element arranged between the inlet and the outlet configured to at least heat or cool the indoor airflow as it flows thereover, one or more fan units arranged between the inlet and the outlet configured to provide velocity to the indoor airflow, and an air treatment assembly (ATA) arranged within or proximate the AHU, the ATA including an air inlet configured to receive a portion of the indoor airflow received by the AHU indoor air inlet.

Described herein is an air handling unit that includes canopies for compressor fans and exhaust fans located on a top thereof, which canopies provide for noise abatement and a canopy to assist in keeping precipitation out. The canopies further include louvers that can be controlled to provide for even further noise abatement and precipitation control.

An air-conditioning system includes a humidifier, a dehumidifier, transfer fans for transferring air of an air-conditioned room to a room, a damper for independently controlling an air volume transferred to the room, a system controller for controlling the humidifier, the dehumidifier and the damper, a room humidity sensor and an air-conditioned room humidity sensor. The system controller further includes an air-conditioned room humidity controller for maintaining the humidity of the air-conditioned room within a specified humidity range defined by a minimum humidity and a maximum humidity, an air volume determiner for determining an air volume passing through the damper according to the humidity of the room obtained by the room humidity sensor and the humidity of the air-conditioned room obtained by the air-conditioned room humidity sensor and a damper controller for controlling the air volume transferred to the room passing through the damper.