초록 ▼

A method and apparatus for monitoring and controlling a multi-pump system is described wherein wire-to-water efficiency (W) is accurately determined according to the formula W=(Q×HS/K×E) wherein Q is flow through the system, HS is total dynamic head across the inlet and outlet headers of the system,

A method and apparatus for monitoring and controlling a multi-pump system is described wherein wire-to-water efficiency (W) is accurately determined according to the formula W=(Q×HS/K×E) wherein Q is flow through the system, HS is total dynamic head across the inlet and outlet headers of the system, E is energy input to the system to drive the pump, and K is a predetermined conversion factor. The pumps of the system are selectively energized and deenergized as the efficiency W varies above and/or below efficiency setpoints so as to optimize the efficiency of the pumping system.

대표청구항 ▼

Apparatus to selectively control pumps in a pumping system having a plurality of selectively energizable pumps coupled between inlet an outlet headers of the system, the apparatus comprising: (a) first means for measuring fluid flow rate Q of the system; (b) second means for measuring total dynamic

Apparatus to selectively control pumps in a pumping system having a plurality of selectively energizable pumps coupled between inlet an outlet headers of the system, the apparatus comprising: (a) first means for measuring fluid flow rate Q of the system; (b) second means for measuring total dynamic head HS between the inlet and outlet headers of the system; (c) third means adapted to communicate with an energy source for pumps in the system for measuring energy E utilized by the system to drive the pumps; (d) fourth means communicating with said first, second, and third means for determining wire-to-water efficiency W of the system accoridng to the formula: W=(Q×HS)/(K×E) wherein K is a predetermined conversion factor; and (e) control means responsive to said fourth means for selectively providing enable signals whereby to energize and deenergize selected ones of the pumps.