A ventilation and air conditioning system includes: an outdoor air supply fan; an exhaust fan; and a system controller to control operations of the outdoor air supply fan and the exhaust fan. The system controller includes: a link controller; an exhaust air volume receiver; a disconnection determinator; and a disconnected state supply air controller. The link controller controls the outdoor air supply fan and the exhaust fan in a linked manner. The exhaust air volume receiver receives, from the exhaust fan, an exhaust air volume signal indicating an exhaust air volume of the exhaust fan. The disconnection determinator determines a disconnected state where the exhaust air volume receiver fails to receive the exhaust air volume signal. The disconnected state supply air controller controls the outdoor air supply fan at a predetermined air volume when the disconnected determinator determines the disconnected state.

Tools, strategies, and techniques are provided for enhancing the control and operation of air curtain devices. The air curtain device can be provided with a computer system programmed to receive input data from various sensors and to communicate the sensor data to a wireless mesh computer architecture. An algorithm module can be programmed to determine adjusted settings or parameters for the air curtain device in response to the sensor data and/or other data sources such as external data sources. Data may be obtained from multiple air curtain devices configured for cooperative performance, and operating parameters or settings may be adjusted in connection with one or more of the multiple air curtain devices. A control device of the air curtain may be provided with a unitary structure suitable for efficient installation of multiple control harness connectors thereon to supply power and/or to establish data connectivity with multiple components of the control device.

An air handling unit includes a rain hood configured to receive an air flow from an external environment surrounding the rain hood, and a sensor disposed within the rain hood and configured to monitor air flow parameters indicative of a flow rate of the air flow.

A louver blade for a louver assembly includes a first section, a second section extending from the first section and including a crest of the louver blade, an extension extending from the second section to form a recess between the extension and the second section, and a protrusion extending from the second section toward the extension and configured to facilitate retention of the particles within the recess. The extension is configured guide particles into the recess in an installed configuration of the louver blade with the louver assembly.

An active airflow inhibiting apparatus for an entranceway comprises a structure, an airflow sensor, and a controller. The structure comprises one or more air mover devices configured to be positioned adjacent an entranceway of a building and defining a passage therethrough for accessing the entranceway. The airflow sensor is configured to provide an output indicative of speed and direction of airflow through the entranceway or at the air mover devices. The controller is connected to the air mover devices and the airflow sensor. The controller is configured to receive the output of the airflow sensor and to control an output of the air mover devices based on the received output so as to generate a differential pressure across the air mover devices which inhibits airflow through the entranceway.

A method and system for conditioning an interior area is disclosed. A method includes retrieving environmental conditions regarding the interior area, wherein the environmental conditions include temperature, humidity, and air speed; retrieving outdoor environmental conditions; generating a field of environmental conditions at a plurality of points within the interior area; estimating clothing insulation of a user based on the outdoor environmental conditions; calculating a thermal comfort of the user to determine a predicted mean vote; and operating a heating, ventilation, and air conditioning system based on the calculated thermal comfort.

Provided is an air conditioning system that achieves energy conservation and comfortableness. In the air conditioning system (100), an outdoor-air conditioner (10) sucks outdoor-air (OA) and supplies the outdoor-air as supply air (SA) from an air handling unit (30). An indoor-air conditioner (50) cools or heats indoor-air (IA) that is an air inside a target space (SP) by using an indoor unit (70) and supplies the air to the target space (SP). A general control unit (90) controls performs cooperative load control in which an operating capacity of the outdoor-air conditioner (10) and an operating capacity of the indoor-air conditioner (50) are controlled in cooperation in accordance with a status of the outdoor-air (OA), a status of the indoor-air (IA), an operation status of the outdoor-air conditioner (10), and/or an operation status of the indoor-air conditioner (50). The general control unit (90) controls, in the cooperative load control, at least one of a parameter of the outdoor-air conditioner (10) and a parameter of the indoor-air conditioner (50) such that a temperature or humidity of the indoor-air (IA) approaches a set value and also a total amount of power consumption of the outdoor-air conditioner (10) and power consumption of the indoor-air conditioner (50) is reduced.

Real-time correction of vehicle load curve for dynamometer testing, and associated systems and methods are disclosed herein. In one embodiment, a method for replicating an on-road performance and/or a failure of a road vehicle in a test facility includes applying a load curve to a controller of the test facility and testing a test vehicle in the test facility using the load curve. The method also includes verifying whether the performance/failure is replicated on the test vehicle, and if the performance/failure is not replicated, changing at least one parameter in the load curve.

An operation method for reducing energy consumption and an electronic apparatus thereof are provided. The operation method includes obtaining, by the electronic apparatus, weather forecast information, inputting, by the electronic apparatus, the weather forecast information to an artificial intelligence model for predicting an amount of power to be consumed by a first air conditioner, and displaying, by the electronic apparatus, the predicted power consumption amount of the first air conditioner output from the artificial intelligence model, wherein the artificial intelligence model is trained to obtain correlation information between a weather condition and a power consumption amount of an air conditioner, based on a weather history and operations of a plurality of air conditioners related to the weather history, and predict the amount of power to be consumed by the first air conditioner based on the correlation information and the weather forecast information.

A controller for an economizer that provides outdoor air to a conditioned space. The controller includes an error calculator configured determine an indoor air quality (IAQ) setpoint error based on an actual IAQ and an IAQ setpoint, an outdoor air flow (OAF) setpoint adjuster configured to determine an adjusted OAF setpoint based on at least one of the IAQ setpoint error, an initial OAF setpoint, and an OAF setpoint upper limit, and a proportional variable deadband controller (PVDC) configured to adjust an operational deadband of the economizer and adjust an operation of at least one of an actuator and a damper of the economizer to achieve the adjusted OAF based on at least one of an actual OAF and the adjusted OAF setpoint. Achieving the adjusted OAF drives the actual IAQ to the IAQ setpoint.