| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress the increase of received electric energy economically and favorably. <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 a means 33 comparing an electric energy judges that the estimated electric energy received, which is computed in a means 32 for estimating a received electric energy, gets over set electric energy, and a demand signal is output. Then, an operation stop state judging means 34 judges an engine-driven heat pump device in operation stop state, in answer to the demand signal. When there is no device in operation stop state, an operation mode selecting means 28 places priority on a device in power generation priority operation mode, and an air conditioning load selecting means 36 selects an engine-driven heat pump device provided with a power generating function on the side of a smaller air conditioning load, and outputs a starting signal so as to drive the generator. <P>COPYRIGHT: (C)2007,JPO&INPIT |
