Importance

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Abstract

A system comprising: a reservoir (14) for holding a liquid (1); a pump (20) arranged to pump the liquid (1) out of the reservoir (14) to a system outlet (24) or into the reservoir (14) from a system inlet; a pressure sensor (34) arranged between the reservoir (14) and the system outlet (24) or between the system inlet and the reservoir (14), the pressure sensor (34) configured to measure the discharge pressure (Pd) of the pump (20) and to generate discharge pressure data; a level sensor (26) configured to detect the level (1) of the liquid (1) in the reservoir (14) and to generate level data; a power monitor (28) configured to monitor the power consumed (p) by the pump (20) and to generate power data; a volume monitor configured to monitor the volume (V) of liquid (1) pumped by the pump (20) and to generate volume data; and a controller (30) configured to: receive the power data, the volume data, the discharge pressure data and the level data; process the discharge pressure data to determine a discharge head (Hd) of the pump (20); process the level data to determine a static head (Hs) of the pump (20); process the discharge head (Hd) and the static head (Hs) to determine a total dynamic head (TDH) of the pump (20); and process the total dynamic head (TDH), the volume data and the power data to determine a normalised pumping station efficiency (nSPE).

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First Claim