Air conditioning system, which is required to achieve both maintenance of energy conservation and proper room environment, can be regarded as heat supply and distribution system. There, requirements for saving energy and maintaining proper room environment coexist. Under energy saving environment, the total heat resource amount available for air conditioning is limited. In this paper, for the air conditioning system that uses the centralized thermal source, algorithm for relocating heat resource to the rooms in higher demand is proposed. Through the virtual heat resource storage, the algorithm saves heat resource when demand is low and consumes when demand is high. It achieves peak-shift of energy consumption as well as peak-cut. Effectiveness of the air conditioning operation plan using the algorithm is confirmed by simulation. In comparison with conventional method, heat resource consumption is reduced from 14.3 percent to 24.7 percent, while raise of averaged room temperature is within 0.195 degree Celsius.
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