| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress the increase of received electric energy while improving the durability of the entire system by leveling the loads of the engines of a plurality of engine-driven heat pump devices provided with power generating functions without affecting air conditioning as much as possible. <P>SOLUTION: An engine-driven heat pump device provided with a power generating function is installed on the rooftop of a building, and a compressor is driven to perform air conditioning, and also the power generated by a generator is supplied to a power load within the building. The electric energy received from a commercial power source increases, and an electric energy comparing means 31 judges that the estimated electric energy received, which is computed in a means 30 for estimating an received electric energy, gets over set electric energy, and a demand signal is output. Then, an operation load selecting means 33 selects an engine-driven heat pump device provided with a generating function which is equipped with an engine where the maximum load in an operation load within a set period stored in an operation load storage means 32 is smaller, in answer to the demand signal, and drives the generator. <P>COPYRIGHT: (C)2007,JPO&INPIT |
