Patent ID: 11920808
Assignee: HITACHI, LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  G | IPC F

Claim 0:
1. An energy management system, which is configured to control operations of air-conditioning facilities in a plurality of buildings, the energy management system comprising:
a processor;
a storage device, coupled to the processor, configured to store instructions; and
an interface, coupled to the processor, communicable to/from a plurality of mobile terminals via a network,
wherein the storage device is configured to store, for each of the plurality of buildings:
first data indicating a relationship between the operation of each of the air-conditioning facilities and an energy consumption amount of each of the air-conditioning facilities,
second data indicating an operational status of each of the air-conditioning facilities,
third data indicating weather, and
fourth data indicating warm and cold in the each of the plurality of buildings, and
wherein the processor, upon executing the instructions is configured to:
receive via the network, for each of the plurality of buildings, report data indicating a satisfaction feeling relating to warm and cold temperatures in a space of a user in the each of the plurality of buildings from each of the plurality of mobile terminals,
calculate a percentage of satisfaction based on the report data for each of the plurality of buildings, the percentage of satisfaction representing a satisfaction feeling as a ratio of an estimated number of users who have expressed satisfaction to a number of users being a population in the space by a statistical method,
create, for each of the plurality of buildings, a plan for operating each of the air-conditioning facilities based on the percentage of satisfaction and a predetermined target percentage of satisfaction,
estimate a first energy consumption amount based on the first data, the first energy consumption amount indicating an estimated energy consumption amount based on an operation of each of the air-conditioning facilities in the plurality of buildings according to the created plan that is distributed to the each of the plurality of buildings via the network,
calculate a second energy consumption amount based on the second data, the third data, and the fourth data, the second energy consumption amount being obtained after each of the air-conditioning facilities is operated after a lapse of a predetermined time period, and
determine whether the first energy consumption amount is larger than the second energy consumption amount, and upon determining the first energy consumption amount is larger than the second energy consumption amount, control operation of the each of the air-conditioning facilities so as to achieve the second energy consumption amount.