Disclosed herein are an air conditioner system and a controlling method thereof. In a situation that air-conditioning systems such as air conditioners and refrigerators are installed and operated in a site, real-time operation data are acquired and the air conditioning and efficiency are calculated at the site. By comparing performance data provided by a device manufacturer and the real-time operation data, device performance is corrected for the site's installation environment. By using corrected device performance, it is possible to save building facility energy by providing optimal operation number control suitable for the installation environment.

A building management system (BMS) includes memory devices having instructions stored thereon that, when executed by processors, cause the processors to perform operations including obtaining a BMS ontology data model defining a plurality of BMS model classes and relationships between the BMS model classes, obtaining a plurality of BMS object definitions including equipment definitions defining a plurality of different types of equipment and point definitions defining a plurality of different types of points, assigning a BMS model class selected from the plurality of BMS model classes to each of the plurality of BMS object definitions, generating a semantic site model by classifying a plurality of BMS objects associated with a building site according to the BMS object definitions and the BMS model classes assigned thereto, and controlling building equipment using the semantic site model.

Variable airflow energy efficient HVAC systems can be used to provide for a three duct air supply, a multi-zone air supply, and a two duct air supply. The systems include an air handling unit that defines a cooling circuit portion and an independent heating/bypass circuit portion. The two circuit portions may each have variable air dampers for admitting variable amounts of ambient and return air, and/or the cooling circuit portion and the heating/bypass circuit portion may each have an active cooling element. Corresponding methods are also disclosed.

Variable airflow energy efficient HVAC systems can be used to provide for a three duct air supply, a multi-zone air supply, and a two duct air supply. The systems include an air handling unit that defines a cooling circuit portion and an independent heating/bypass circuit portion. The two circuit portions may each have variable air dampers for admitting variable amounts of ambient and return air, and/or the cooling circuit portion and the heating/bypass circuit portion may each have an active cooling element. Corresponding methods are also disclosed.

Disclosed is an integrated modular smart facade system that has improved energy efficiency and comfort in an indoor environment and that is easy to install, and more particularly an integrated modular smart facade system including a curtain wall frame (10), an air conditioning unit (20) located in a hollow portion (4) of the curtain wall frame (10), a window unit (30) located in an opening (3) of the curtain wall frame (10), and an electricity production unit (40) located at a portion of an outer wall of the air conditioning unit (20).

A cooling and ventilation outlet is described, including a shell configured to connect to an HVAC duct and an inner body that may be securely attached within the shell such that air from the HVAC duct passes through the inner body. The inner body may include: a directable air output nozzle, a first actuator configured to control a direction of the nozzle, an adjustable damper, a second actuator configured to control airflow through the inner body by actuating the adjustable damper, an indicator that may include at least one controllable visual element, a pressure sensor configured for use in determining airflow through the inner body, and circuitry including a network interface. The circuitry is configured to accept commands over a network, to accept readings from the pressure sensor, and to control the first actuator, the second actuator, and the indicator.

A cooling and ventilation outlet is described, including a shell configured to connect to an HVAC duct and an inner body that may be securely attached within the shell such that air from the HVAC duct passes through the inner body. The inner body may include: a directable air output nozzle, a first actuator configured to control a direction of the nozzle, an adjustable damper, a second actuator configured to control airflow through the inner body by actuating the adjustable damper, an indicator that may include at least one controllable visual element, a pressure sensor configured for use in determining airflow through the inner body, and circuitry including a network interface. The circuitry is configured to accept commands over a network, to accept readings from the pressure sensor, and to control the first actuator, the second actuator, and the indicator.

A plurality of heat transfer pipes; a first header and a second header to which both ends of each of the heat transfer pipes that are disposed in parallel are fixed, respectively; a plurality of plate shaped fins through which each of the heat transfer pipes is penetrated and that are provided at intervals in a direction in which the heat transfer pipes extend between the first header and the second header; and a fan that circulates an airflow between the plate shaped fins are included. The first header and the second header are formed to be sectioned into multiple rows, the heat transfer pipes are disposed densely in an sectioned area of the first header and the second header, and the heat transfer pipes are disposed sparsely in an area between the sectioned areas of the first header and the second header.

A building management system includes a meter configured to provide data samples of a real point. The real point corresponds to a first physical parameter measured by the meter. The building management system also includes an analytics circuit configured to store a real point object representing the real point and store a meter object representing the meter. The meter object includes a points attribute that lists one or more point objects associated with the meter object including at least the real point object. The analytics circuit is also configured to store a virtual point object representing a virtual point. The virtual point corresponds to a second physical parameter not measured by the meter. The analytics circuit is also configured to update the points attribute in the meter object to list the virtual point object as one of the point objects associated with the meter object.

Disclosed herein are methods, systems, and devices for allowing access for maintenance and servicing of environmental control systems of prefabricated equipment enclosures. In one embodiment, an enclosure includes a first wall, a first environmental control unit, and a first door. The first door is mechanically coupled with the first environmental control unit and the first wall. The first door is configured to have a first closed position allowing in-service operation of the first environmental control unit for an internal space of the enclosure.