Mitsubishi Electric Corporation

Yoshitaka Uno

Takaya Yamamoto

Mio Motodani

Makoto Kurihara

Kazuhiro Komatsu

Kiyoshi Maekawa

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