The present disclosure relates to a method for primary frequency regulation of an electric network based on large building air conditioning loads cluster. The method includes the use of a two layer control structure with a central coordinating layer and a local control layer. Each local controller performs a thermal model parameter identification and a local air conditioning autonomous control, and uploads local information to the central controller at the end of each communication interval t.sub.gap, the central controller broadcasts coordinating information to each local controller. Based on the coordinating information sent from the central controller, each local controller determines whether a power deviation is beyond an action dead zone at the beginning of each action period t.sub.act, if beyond, then perform a frequency regulation control action, else, perform no action and estimate operation states of all the air conditionings at the beginning of the next action period.

The present disclosure provides an air conditioner. The air conditioner includes a compressor; a sensor for measuring the compressors state configured to detect compressor state information that includes at least one of a pressure value and a saturation temperature of the compressor; and a controller configured to control air flow on the side of an indoor unit by comparing the compressor state information measured from the sensor and a threshold.

The invention provides a temporary installation of a system of RFID-based terminals and user-worn RFID devices within an event interrogation zone. At an event, terminals are located within, and associated with, vendor booths erected in the interrogation zone. User RFID devices are issued to users wishing to enter the interrogation zone. Each user RFID device includes an element worn by the user, and an attached or embedded RFID tag with a stored unique UserID. Products for sampling have unique ProductIDs. The terminals are programmed for: (1) retrieving the UserID when the user enters the vendor booth; (2) retrieving a ProductID of a product sampled by the user; and (3) retrieving the UserID when the user leaves the vendor booth. The UserID and timestamps of entry, departure, and ProductIDs of products sampled are communicated to a server. The system allows tracking of products sampled and user behavior during an event.

In an indoor unit of an air-conditioning apparatus according to the present invention, an air inlet for room air is provided at a position lower than a height position of a drain pan. A partition plate is provided to partition a space below a height position of the drain pan in a housing. A pipe connecting portion connected to a refrigerant pipe of an outdoor unit is provided in one part of the partitioned space and a heat exchanger and a fan are placed in the other part of the partitioned space. At least one communicating path is formed in the partition plate to communicate the two parts of the partitioned space with each other.

A modification of a sensor data management system to enable discrete sensor applications. A sensor data control system enables discrete sensor applications to control the configuration, collection, processing, and distribution of sensor data produced by selected sensors at various monitored locations. The sensor service offered by the sensor data control system can be leveraged by any sensor application having an interest in any part of one or more monitored locations.

An air conditioning device is provided, including an air duct module having a temperature adjusting unit, an energy conduction component, an airflow guiding unit and a control module. The temperature adjusting unit is disposed in the air duct module and has a first side configured for generating a first temperature range and a second side configured for generating a second temperature range. The airflow guiding unit is disposed in the air duct module. The energy conduction component is disposed in the air duct module configured for conducting the energy generated by the first side or the second side of the temperature adjusting unit. The control module is configured for controlling on-off operations or configurations of the temperature adjusting unit and the airflow guiding unit.

In an air-conditioning apparatus including a refrigerant circulating circuit A and a heat medium circulating circuit B that performs passing of heat to and from the refrigerant circulating circuit A, the heat medium circulating circuit is a closed circuit, the maximum pump head Pp of a pump of the heat medium circulating circuit is 150 kPa or more, and a pressure near at least a suction side of the pump is set to a charged pressure that is maintained equal to or higher than the atmospheric pressure during operation of the pump.

A control device for an air conditioning system is provided with: an outdoor-unit control part capable of communication with an outdoor unit (B) through a communication medium, the outdoor-unit control part acquiring, through the communication medium, information about machinery installed in the outdoor unit (B) and outputting control commands to the machinery installed in the outdoor unit (B); and an indoor-unit control part capable of communication with an indoor unit (A) through a communication medium, the indoor-unit control part acquiring, through the communication medium, information about machinery installed in the indoor unit (A) and outputting control commands to the machinery installed in the indoor unit (A). The control device individually changes the operating point of the machinery installed in the indoor unit (A) or the outdoor unit (B), acquires a predetermined state quantity before and after the change, and executes a malfunction prediction operation to determine the presence or absence of an anomaly in the machinery. The control device for the air conditioning system can thereby ascertain the operating state of the air conditioning system more simply and accurately.

In the control device 12 of the indoor unit 11, a plurality of communication means 14a to 14c having different communication speeds; communication speed recognizing means 18 for recognizing whether or not a communication line 15 from an outdoor unit 10 is connected to any of the communication means, from the communication speed of the control information signal; and communication means confirmation means 18 for confirming the communication means that performs the following communication based on the recognized communication speed, are provided. According to this, it is possible to recognize the communication speed of an input signal without providing a manual changeover switch. Therefore, it is possible to solve at least one or more of the problems that the installation work is complicated, that a setting error of the changeover switch is likely to be generated, and that the product prices increase.

Remote control of energy consumption is realized using a readily installable, flexible approach. According to an example embodiment of the present invention, a remote source communicates with a wireless controller for executing energy usage control. The remote source sends signals to the wireless controller via a gateway located near or, in one implementation, forming part of the wireless controller. In response to the signals, the wireless controller sets control settings for operating one or more of a variety of equipment types, such as a furnace, air conditioner, water heater or heat pump. With this approach, wired connections from the gateway to energy-consuming equipment do not necessarily need to be made in order to affect remote energy-consumption control. For instance, when used in connection with a controller wired to the energy-consuming equipment, the gateway need only communicate wirelessly with the controller and does not necessarily need to be coupled to the energy-consuming equipment. In addition, access to the energy-consuming equipment for establishing remote energy control is not necessary; rather, the remote energy control can be effected by accessing user-friendly locations, such as those where thermostats and other controllers are typically located.