An intelligent air conditioning system, comprising a first air inlet channel (11), a second air inlet channel (12), an exhaust channel (13), a circulating channel (14), a main machine (15), a first switching valve (16), a second switching valve (17), a third switching valve (18), and a control unit. The circulating channel (14) is communicated with at least one space (20); the main machine (15) is provided on the circulating channel (14) to generate air flow in the circulating channel (14); the first switching valve (16) selectively enables the first air inlet channel (11) to be communicated with the circulating channel (14), the second switching valve (17) selectively enables the circulating channel (14) to be communicated with the exhaust channel (13), and the third switching valve (18) selectively enables the second air inlet channel (12) to be communicated with the circulating channel (14); the control unit is electrically connected to the first switching valve (16), the second switching valve (17), and the third switching valve (18).

A fresh air plenum module (10) for attachment to a fan coil unit (12) for introducing air from an outdoor setting, wherein the fresh air plenum module includes: a first inlet (14) for connection to an outlet (24) of the fan coil unit; a second inlet (16) for connection to an air handling unit; an outlet (18) for discharge of the outdoor air and the conditioned air; and a merging volume (20) in communication with the first inlet, the second inlet and the outlet; in use, a flow of the outdoor air from the second inlet through the merging volume to the outlet generates a pressure gradient which induces a flow of air through the first inlet and into the fresh air plenum module from the fan coil unit.

A fresh air plenum module (10) for attachment to a fan coil unit (12) for introducing air from an outdoor setting, wherein the fresh air plenum module includes: a first inlet (14) for connection to an outlet (24) of the fan coil unit; a second inlet (16) for connection to an air handling unit; an outlet (18) for discharge of the outdoor air and the conditioned air; and a merging volume (20) in communication with the first inlet, the second inlet and the outlet; in use, a flow of the outdoor air from the second inlet through the merging volume to the outlet generates a pressure gradient which induces a flow of air through the first inlet and into the fresh air plenum module from the fan coil unit.

An indoor unit of an air conditioner and an air conditioner are disclosed. The indoor unit has a housing and an evaporator. The housing has a first air duct, a second air duct, a first air intake port, a first air supply port, a second air intake port, and an adapter air duct assembly. The first air duct communicates with the first air intake port and the first air supply port. The second air duct communicates with the second air intake port and the adapter air duct assembly. In a first state, the adapter air duct assembly takes in and guides air from the second air duct to a preset air outlet position. In a second state, part of indoor return air from the first air intake port can pass through the adapter air duct assembly.

As air inside a building (e.g., a data center or any building that generates heat) becomes heated, it rises and is received or captured by a heat containment and then expelled from the building. The hot air is not recycle, recirculated, or re-cooled. Hot air being expelled from the building creates a pressure differential in which the pressure at the hot side of the building (where the heat containment is located) is lower than the cool side of the building. To this end, a chilling unit is installed at an opening of a building to supply cooled air at a constant rate. The chilling unit does not have an internal controller. Rather, an air conditioning (AC) unit of the building acts as an external controller. The AC unit is be set to maintain a target temperature and only runs when the temperature inside the building is above the target temperature.

A ventilation air conditioning structure including a room that has a floor portion to a fourth wall portion, a first wall portion to be a building outer wall in which an air supply opening is formed in a vicinity of a third wall portion, and an air exhaust opening that is formed in a vicinity of the fourth wall portion. The ventilation air conditioning structure also includes an air conditioner that is disposed inside the room and where at least one of air sending openings of a room interior unit is capable of sending air in a direction of a second wall portion, and an external-air conditioner that is disposed outside the room. The external-air conditioner includes heat exchangers that are incorporated in a refrigerant circuit of the air conditioner via a branched pipe that is branched from a refrigerant piping and a casing that houses the heat exchangers.

A refrigerated air conditioning unit partitioned into an inside plenum and an outside plenum and having a single refrigeration loop, a single evaporator, and a recirculated air stream, the unit also having a dynamic intelligent air management system (DIAMS) internal to the unit that is cooperatively configured and operable to continuously introduce preconditioned fresh air directly into the recirculated air stream whenever the unit is operating and to exercise control over a mixed air flow discharged from the unit into an identified space to achieve a desired air temperature and humidity within the identified space.

A system for fault detection and diagnostics of equipment. The system may also be capable of disaggregation and/or virtual submetering of energy consumption by equipment, such as that of heating, ventilation and air conditioning, lighting, and so forth, in a building. Vibration and current sensors, along with one or more algorithms, may be utilized for fault detection and diagnostics of equipment. Models may be developed to aid in deducing energy consumption of individual components of equipment, and the like, for a building.

A system for fault detection and diagnostics of equipment. The system may also be capable of disaggregation and/or virtual submetering of energy consumption by equipment, such as that of heating, ventilation and air conditioning, lighting, and so forth, in a building. Vibration and current sensors, along with one or more algorithms, may be utilized for fault detection and diagnostics of equipment. Models may be developed to aid in deducing energy consumption of individual components of equipment, and the like, for a building.

Various embodiments provide a make-up air unit, comprising a first air inlet defining a portion of a first path and a portion of a second path; a second air inlet defining a third path that joins with the first path; a dehumidification unit disposed within the first path; an air conditioner with a portion of the air conditioner disposed within the first path downstream of where the third path joins the first path, and a portion of the air conditioner disposed within the third path; a first air outlet where the first path exits the make-up air unit; and a second air outlet wherein the second path exits the make-up air unit; wherein the air conditioner is disposed on a stand; wherein the dehumidification unit is disposed below the air conditioner; and wherein the first path is isolated from the third path.