Importance

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Abstract

A certain embodiment includes a setting calculator (31), an energy use calculator (32), a manufacturing carbon dioxide emission amount calculator (33), and an optimizer (35). The setting calculator (31) operates to depend on an initial size, an initial temperature, and a target temperature of a rolling material (120), to calculate a control setting value for services of a hot rolling mill (100) to mill the rolling material (120). The energy use calculator (32) operates to depend on a control setting value, to calculate a use of energy as a necessary energy for services of the hot rolling mill (100) to mill the rolling material (120). The manufacturing carbon dioxide emission amount calculator (33) operates to depend on a carbon dioxide emission coefficient and a use of energy, to calculate an emission amount of carbon dioxide emitted at the hot rolling mill (100). The optimizer (35) operates to calculate a target temperature to be a temperature equal to or higher than a requisite temperature for the rolling material (120) to be milled with a secured quality, as a temperature to minimize either or both of use of energy and emission amount of manufacturing carbon dioxide.

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First Claim