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Operation planning method, operation planning device, heat pump hot water supply system operation method, and heat pump hot water supply and heating system operation method

  • US 8,972,073 B2
  • Filed: 10/18/2011
  • Issued: 03/03/2015
  • Est. Priority Date: 11/10/2010
  • Status: Active Grant
First Claim
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1. An operation planning method performed in a system including a power generation device which is a photovoltaic device, a first electric load which operates using power generated by the power generation device, and a second electric load which generates heat using power generated by the power generation device, said operation planning method designing an operation plan for the second electric load, and comprising:

  • predicting, for individual unit time periods, an amount of power to be generated by the power generation device and an amount of power to be consumed by the first electric load; and

    designing the operation plan for the second electric load to cause the second electric load to operate and generate heat by consuming reverse power during an operation period which includes, among the time periods, a time period in which an amount of the reverse power is the largest, the reverse power being calculated by subtracting the amount of power to be consumed from the amount of power to be generated,wherein the second electric load includes a heat generator which generates heat using power generated by the power generation device, heat storage which stores heat generated by the heat generator, and a radiator which radiates heat stored in the heat storage,wherein the predicting includes predicting an amount of heat to be radiated in reverse flow standby by the radiator during a reverse flow standby time period, the reverse flow standby time period being a time period in which the amount of power to be consumed exceeds the amount of power to be generated, andwherein said designing includes designing the operation plan for the operation period, the operation period being determined by selecting one or more of the time periods in descending order of the amount of reverse power until a total amount of time of the one or more selected time periods exceeds an amount of time required for the heat generator to generate the amount of heat corresponding to the amount of heat to be radiated in reverse flow standby as predicted in said predicting, the operation plan being designed such that the amount of heat corresponding to the amount of heat to be radiated in reverse flow standby is stored in the heat storage.

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