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A mathematical model which simulates the performance characteristics of reciprocating handpumps is presented. The model is based on basic fluid-mechanics principles and consists of volumetric and mechanical efficiency submodels.

TitleMathematical simulation of reciprocating handpump performance
Publication TypeJournal Article
Year of Publication1991
AuthorsMbigha, CC, Nalluri, C
Paginationp. 281-290: 10 fig., 1 tab.
Date Published1991-10-01
Keywordsefficiency, hand pumps, hydraulics, laboratory testing, models
Abstract

A mathematical model which simulates the performance characteristics of reciprocating handpumps is presented. The model is based on basic fluid-mechanics principles and consists of volumetric and mechanical efficiency submodels. The volumetric efficiency submodel considers loss of discharge as the leakage around the piston periphery and the mechanical efficiency submodel uses flow-resistance theory to predict the energy expended in lifting water. Pump-performance predictions using the model agree with laboratory measurements for parameters such as stroke length and speed, and delivery head. Both a piston-type and a 'lotus-valve' type handpump were used to test the model.

Notes16 ref.
Custom 1232.2

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