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

Claim 6:
7. An energy management method, which is executed by an energy management system configured to control an operation of an air-conditioning facility in a building,
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:
first data indicating a relationship between the operation of the air-conditioning facility and an energy consumption amount of the air-conditioning facility,
second data indicating an operational status of the air-conditioning facility,
third data indicating weather, and
fourth data indicating warm and cold temperatures in the building,
the energy management method comprising:
receiving via the network, by the processor, report data indicating a satisfaction feeling relating to warm and cold temperatures in a space of a user in the building from each of the plurality of mobile terminals;
calculating, by the processor, a percentage of satisfaction based on the report data, the percentage of satisfaction representing the 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 staying space by a statistical method;
creating, by the processor, a plan for operating the air-conditioning facility based on the percentage of satisfaction and a predetermined target percentage of satisfaction;
estimating, by the processor, 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 the air-conditioning facility according to the created plan;
calculating, by the processor, 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 the air-conditioning facility is operated after a lapse of a predetermined time period; and
determining 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, controlling, by the processor, operation of the air-conditioning facility so as to achieve the second energy consumption amount.