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Experimental Study of a Novel Jet Booster Pump.

Wetzel JM; Jackson T; Bintz DW

NTIS: PB 88-208715 :39 pages

10006109

This report describes the evaluation of a new form of a low head, jet booster. The jet pump consisted of a constant diameter pipe fitted with two wall jets energizing the flow and a constant area diffuser consisting of a slotted wall portion of the pipe where water and solid fines were withdrawn. The withdrawn water was pressurized and recirculated to the jets by an external centrifugal slurry pump, thus performing a pressure booster operation on the main line flow. The jet pump was evaluated in a 3 inch pipe recirculating flow facility. Extensive tests were conducted with water flow to evaluate and optimize performance characteristics. The best efficiency obtained was about 17%. Addition of solid particles to the flow in sizes up to 3/4 inch resulted in plugging of the screened diffuser for concentrations above 20% by weight. Coal particles were rapidly eroded to very small sizes due to the action of high velocity side jets. Problems associated with the screened diffuser limit the pumps' usefulness.

19850101

CP; Final Contract Report;

1985

PB88-208715

A04

OFR 17-88

NTIS: PB 88-208715

MN;

University of Minnesota