Naslov
Improving Centrifugal Pump Efficiency by Impeller Trimming

Autori
Šavar, Mario ; Kozmar, Hrvoje ; Sutlović, Igor

Izvornik
Desalination (0011-9164) 249 (2009), 2; 654-659

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
desalination; efficient centrifugal pump operation; impeller trimming

Sažetak
Due to high capacities of desalination plants, efficient operation of all their components, including centrifugal pumps is very important. It is often found that centrifugal pumps do not operate in their optimal points for various reasons. One of method to improve efficiency of centrifugal pump is proposed here. Impeller trimming is a common practice performed by pump manufacturers and users when it is necessary to adjust the centrifugal pump head and flow to the actual needs. The trimmed pump is not strictly similar to the initial pump because only a few parameters are modified, while all the others remain unchanged. In spite of this, the assumption of valid similarity was made here and examined through a series of experiments. A centrifugal pump impeller of low specific speed was trimmed and tested successively. For this particular pump, the influence of disregarded similarity can be estimated to +/-3, 94% for the pump head and to +/-5, 24% for the power, both with a 95% statistical certainty.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo, Strojarstvo

POVEZANOST RADA