<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Real water losses derived from water supply systems represent an important topic, nowadays. It is difficult to predict and to calculate the water lost volume, these values being crucial in any water balance. In addition, the leakage flow can be estimated only when the geometric and hydraulic characteristics of the pipes and the period of time associated to the leakage are known. Also, by using the equation of the water flow can be obtained inaccurate values, especially when incorrect values of discharge coefficient are used. The values of the discharge coefficient can vary between 0.6 and 0.85, depending on a multiple aspects, such as the pipe diameter, the orifice size and shape, the pipe material, the orifice position on the pipe wall, the pipe thickness and the hydraulic parameters of the water (flow and pressure). This paper is focused of an experimental study of a leak simulation in a PVC pipe. Thereby, a circular orifice is drilled on PVC pipe wall and the influence of the water flow and pressure on the discharge coefficient (<italic>Cd</italic>) is analysed. The experimental values obtained for de <italic>Cd</italic> are 0.59 - 0.86, values that are in accordance with the results from similar studies.</p>
</abstract>

Real water losses derived from water supply systems represent an important topic, nowadays. It is difficult to predict and to calculate the water lost volume, these values being crucial in any water balance. In addition, the leakage flow can be estimated only when the geometric and hydraulic characteristics of the pipes and the period of time associated to the leakage are known. Also, by using the equation of the water flow can be obtained inaccurate values, especially when incorrect values of discharge coefficient are used. The values of the discharge coefficient can vary between 0.6 and 0.85, depending on a multiple aspects, such as the pipe diameter, the orifice size and shape, the pipe material, the orifice position on the pipe wall, the pipe thickness and the hydraulic parameters of the water (flow and pressure). This paper is focused of an experimental study of a leak simulation in a PVC pipe. Thereby, a circular orifice is drilled on PVC pipe wall and the influence of the water flow and pressure on the discharge coefficient (Cd) is analysed. The experimental values obtained for de Cd are 0.59 - 0.86, values that are in accordance with the results from similar studies.

Experimental Determination of the Discharge Coeffcient Through Circular Orifice in PVC Pipes

Building Services Faculty, Department of Building Services Engineering

Journal of Applied Engineering Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Real water losses derived from water supply systems represent an important topic, nowadays. It is difficult to predict and to calculate the water lost volume,...

Experimental Determination of the Discharge Coeffcient Through Circular Orifice in PVC Pipes

Published Online: Nov 11, 2020

Page range: 133 - 138

Received: Jul 24, 2020

Accepted: Jul 31, 2020

DOI: https://doi.org/10.2478/jaes-2020-0020

Keywords
pipe leakage, operating pressure, water distribution system, discharge coefficient, water flow, circular orifice

© 2020 Anca Hotupan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Experimental Determination of the Discharge Coeffcient Through Circular Orifice in PVC Pipes

Published Online: Nov 11, 2020

Page range: 133 - 138

Received: Jul 24, 2020

Accepted: Jul 31, 2020

DOI: https://doi.org/10.2478/jaes-2020-0020

Keywordspipe leakage, operating pressure, water distribution system, discharge coefficient, water flow, circular orifice

© 2020 Anca Hotupan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
pipe leakage, operating pressure, water distribution system, discharge coefficient, water flow, circular orifice