| 摘要 |
PROBLEM TO BE SOLVED: To calculate, based on a pump characteristic value indicating an arbitrary operation point, a shaft power and power consumption required when operating the pump at the operation point. SOLUTION: A reference flow rate calculation section 16A calculates a reference flow rate Q<SB>0</SB>at a reference operation point R<SB>0</SB>based on an input characteristic value 2 acquired by a data acquisition section 11. A reference shaft power calculation section 16B calculates a reference shaft power E<SB>0</SB>of the pump at a reference power point P<SB>0</SB>based on the reference flow rate Q<SB>0</SB>calculated by the reference flow rate calculation section 16A. A power calculation section 16C specifies a shaft power curve at control B<SB>1</SB>based on the reference flow rate Q<SB>0</SB>calculated by the reference flow rate calculation section 16A, the reference shaft power E<SB>0</SB>calculated by the reference shaft power calculation section 16B and an at-control shaft power curve function expression of a storage section 15, so as to calculate a shaft power at control E<SB>1</SB>at a power point at control P<SB>1</SB>as a pump power value 3 from a flow rate at control Q<SB>1</SB>and a shaft power curve at control B<SB>1</SB>. COPYRIGHT: (C)2009,JPO&INPIT |
