冷却水温度離散化によるターボ冷凍機最適運用計画のためのモデル化の提案

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  • Proposal of a modeling method to solve optimal operation planning problem of turbo refrigerator by cooling water temperature discretization

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<p>In recent years, we are facing an energy crisis, and the importance of properly managing limited energy is increasing. In cold energy supply, integrated production and supply of cold energy is performed by a system composed of high-performance equipment, and it is said that energy-saving effects can be expected compared to individual production. The refrigerators used in such cold supply systems have different part-load performance characteristics depending on the cooling water temperature. The cooling water temperature is controlled by the operation of the cooling tower, and the temperature can theoretically be lowered to the ambient wet-bulb temperature. Against this background, to minimize the power consumption of the entire system, there is a trade-off relationship between the power consumption of the refrigerator and the power consumption of the cooling tower, depending on the cooling water setpoint temperature. Therefore, it is necessary to formulate a mathematical model of the cooling tower and chiller that expresses the effect of the ambient wet-bulb temperature on the cooling water temperature in order to solve the cooling water temperature operation optimization problem. In this research, we propose a method to construct a mathematical model of a refrigerator using daily operation data.</p>

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