Mitsubishi Electric Corporation

Yoshitaka Uno

Takaya Yamamoto

Makoto Kurihara

Kazuhiro Komatsu

Yoshihiro Takahashi

Kiyoshi Maekawa

Koji Matsuzawa

Masashi Fujitsuka

Mio Motodani

Taro Hattori

Osamu Nakajima

Takahiro Nakai

Hiroshi Maitani

An air-conditioning apparatus includes; an air temperature detection unit configured to detect air temperature in an air-conditioned space; a human body detection unit configured to detect human bodies in the air-conditioned space; an estimation unit configured to estimate thermal sensation of persons detected by the human body detection unit; and a control unit configured to correct a value of the air temperature or set temperature based on the thermal sensation of all of the detected persons estimated by the estimation unit, and to control a refrigeration cycle by using the corrected value.

Air-conditioning apparatus

A controller of an air-conditioning system includes a feedback control unit configured to generate a state quantity command from a control parameter and a difference between a target value of a room temperature and a measured room temperature and control the room temperature to the target value on the basis of the state quantity command, a control target heat characteristic model calculation unit configured to calculate a parameter of a model regarding a heat characteristic of a control target from at least a state quantity regarding an amount of heat supplied to the control target or the state quantity command, and the measured room temperature during normal operation, and a control parameter determination unit configured to determine the control parameter by using the parameter and a formula derived from the model regarding the heat characteristic of the control target.

Controller of air-conditioning system and method for controlling air-conditioning system

An air-conditioning system controller controls one or plural air-conditioning apparatus installed in a building, and includes a processor that determines an air-conditioning apparatus control command so that a preset evaluation index satisfies a preset condition in a preset control-target period under a preset constraint. The processor divides the control-target period into time sections, determines a room-temperature change permissible range within which a room temperature satisfies the constraint, determines a heat-load change permissible range, based on the room temperature, the room-temperature change permissible range, a heat load estimation, and a heat load to be processed by each air-conditioning apparatus, and determines, for each time section, as the air-conditioning apparatus control command, an operation frequency and start-stop of the air-conditioning apparatus, based on the heat-load change permissible range and an operation efficiency of the air-conditioning apparatus.

Air-conditioning system control device and air-conditioning system control method

An air-conditioning system control apparatus capable of, even for a room in which a humidity sensor is not installed, accurately estimating an indoor humidity and preventing an indoor temperature and humidity from deviating from comfortable ranges. The air-conditioning system control apparatus includes a thermal characteristic parameter setting unit configured to determine a thermal characteristic parameter of a building thermal model based on a heat equation, a humidity characteristic parameter setting unit configured to determine a humidity characteristic parameter of a building humidity model based on a moisture balance equation in an air-conditioned space, and a control data generation unit configured to generate control data of an air-conditioning apparatus so that a temperature and a humidity of the air-conditioned space are each within a preset range.

Air-conditioning system control apparatus

A heat load predictor predicts a change over time of a heat amount to be processed by air-conditioning equipment, an operation plan creator previously creates an operation plan of the air-conditioning equipment to reduce an evaluation index under a first restrictive condition that a total process heat load be maintained at a same level or within a range of a predetermined amount of difference and a room temperature be maintained within a predetermined comfortable temperature range, and an operation plan corrector corrects the operation plan during controlling the air-conditioning equipment based on the operation plan. If an actually measured temperature differs from a predicted temperature predicted by the operation plan creator at the time of creating the operation plan, the operation plan creator predicts a change over time of the temperature in the room, and corrects the operation plan to minimize the evaluation index under the first restrictive condition.

Growing community of inventors

Chiyoda-ku, Japan

Yoshitaka Uno