| 摘要 |
<p>A cooling capacity coefficient (alphai) [Nm3/hrsrpm] that establishes a relationship between the rotational speed (ri) [rpm] and air volume (bi) [Nm3/hr] for each blower (4) provided to a cooling furnace is measured and the rotational speed is calculated through a predetermined calculation procedure, whereby the required air volume is obtained and the rotational speed (ri) [rpm] for each blower is determined so that the rotational speed is within a range between the maximum value (ri max) and the minimum value (ri min) of each blower rotational speed. Consequently, for example, even for a blower of a cooling furnace installation used over many years, a blower rotational speed providing sufficient air volume to adequately cool a steel sheet is able to be determined.</p> |
