PHOTOVOLTAIC POWER GENERATION DEVICE COOPERATION HEAT PUMP HOT WATER STORAGE TYPE HOT WATER SUPPLY SYSTEM

摘要

PROBLEM TO BE SOLVED: To solve the problem in which heat quantity boiled by power generation surplus power deviates from prediction.SOLUTION: A photovoltaic power generation device cooperation heat pump hot water storage type hot water supply system includes: HP power consumption storage means 37 for storing HP power consumption which is power consumption of heat pump type heating means 19, the HP power consumption being predetermined according to a plurality of boiling target temperatures; surplus prediction means 36 for predicting power generation surplus power of the next day in a photovoltaic power generation device 3; boiling possible time calculation means 38 for calculating boiling possible time during which boiling is possible by the next day power generation surplus power from information about power generation surplus power and the HP power consumption according to the determined boiling target temperature; surplus power boiling heat quantity calculation means 39 for calculating the surplus power boiling heat quantity which is the heat quantity boiled in the boiling possible time; and night time boiling heat quantity calculation means 34 for calculating the night time boiling heat quantity by subtracting the surplus power boiling heat quantity from boiling target heat quantity. The day time boiling heat quantity can be predicted by the power generation surplus power with good accuracy, and a proper amount of water can be boiled in a night time zone.SELECTED DRAWING: Figure 2