Patent ID: 9702591
Date: 2017-07-11
CPC Classifications: F24D,F24H

Claim:
1. A hot water supply system comprising: a hot water storage tank that stores water; a boiling unit that is a heating source that heats the water stored in the hot water storage tank; and a controller that determines an amount of heat to be generated by the boiling unit, for each time slot in order to heat the water stored in the hot water storage tank, wherein the controller includes: a hot water supply load data storage unit that stores hot water supply load data generated on the basis of at least a water temperature of water flowing into the hot water storage tank and a water temperature and a flow rate of water flowing out from the hot water storage tank, for a plurality of days; a hot water supply load data analysis unit that analyzes the hot water supply load data for the plurality of days stored in the hot water supply load data storage unit; an operation plan generation unit that predicts a hot water supply load for a predetermined day ahead of the plurality of days stored in the hot water supply load data storage unit, on the basis of the analysis by the hot water supply load data analysis unit, and generates an operation plan for the boiling unit at the predetermined day on the basis of a result of prediction; and an operation plan correction unit that, after start of operation based on the operation plan, predicts a subsequent hot water supply load at the predetermined day on the basis of a hot water supply load result at the predetermined day, and generates a subsequent operation plan at the predetermined day by changing the operation plan generated by the operation plan generation unit, on the basis of the hot water supply load predicted again and a remaining amount of stored hot water in the hot water storage tank, and the hot water supply load data analysis unit classifies the hot water supply load data for the plurality of days stored in the hot water supply load data storage unit, into a plurality of groups, the operation plan generation unit selects one of the plurality of classified groups having an occurrence frequency higher than a predetermined probability and generates the operation plan for the boiling unit on the basis of hot water supply load data of the selected group, and the operation plan correction unit selects at least one of the groups having a low error from the hot water supply load result at the predetermined day after start of operation based on the operation plan, and generates the subsequent operation plan at the predetermined day on the basis of the selected hot water supply load data.