The dynamic behaviour of air valves is still, to date, not very well known and, despite numerous scientific contributions, a standard approach for their dimensioning is yet to be found. Several analytical and experimental laboratory studies have been conducted for rapid pressurizing of entrapped air in a pipeline system, but most of these analyses have been performed with an air valve located at the end of a horizontal pipeline. In this study, an experimental analysis is carried out for several orifice sizes installed on a viscoelastic pipe for different boundary conditions. A brief description of the experimental hydraulic circuit and test procedures is provided, presenting the results of this laboratory experience. Experimental results show that the overpressure, due to entrapped air in a pressurized system, may depend on several factors such as pipeline slope.

Experimental analysis of air valve behaviour during hydraulic transients / Balacco, Gabriella; Apollonio, Ciro; Ferruccio Piccinni, Alberto. - In: JOURNAL OF APPLIED WATER ENGINEERING AND RESEARCH. - ISSN 2324-9676. - ELETTRONICO. - 3:1(2015), pp. 3-11. [10.1080/23249676.2015.1032374]

Experimental analysis of air valve behaviour during hydraulic transients

Balacco, Gabriella
;
Apollonio, Ciro;Ferruccio Piccinni, ALberto
2015-01-01

Abstract

The dynamic behaviour of air valves is still, to date, not very well known and, despite numerous scientific contributions, a standard approach for their dimensioning is yet to be found. Several analytical and experimental laboratory studies have been conducted for rapid pressurizing of entrapped air in a pipeline system, but most of these analyses have been performed with an air valve located at the end of a horizontal pipeline. In this study, an experimental analysis is carried out for several orifice sizes installed on a viscoelastic pipe for different boundary conditions. A brief description of the experimental hydraulic circuit and test procedures is provided, presenting the results of this laboratory experience. Experimental results show that the overpressure, due to entrapped air in a pressurized system, may depend on several factors such as pipeline slope.
2015
Experimental analysis of air valve behaviour during hydraulic transients / Balacco, Gabriella; Apollonio, Ciro; Ferruccio Piccinni, Alberto. - In: JOURNAL OF APPLIED WATER ENGINEERING AND RESEARCH. - ISSN 2324-9676. - ELETTRONICO. - 3:1(2015), pp. 3-11. [10.1080/23249676.2015.1032374]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/59035
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