2021-02-27T19:02:45Z
http://oa.upm.es/cgi/oai2
oai:oa.upm.es:22880
2014-09-22T11:33:28Z
7374617475733D707562
7375626A656374733D666973696361
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Increasing the accuracy of positive displacement meters for the measurement of volume in liquid hydrocarbon logistics
García-Berrocal Sánchez, Agustin
Balbás Antón, Miguel
Montalvo Martín, Cristina
Physics
Accuracy in the liquid hydrocarbons custody transfer is mandatory because it has a great economic impact. By far the most accurate meter is the positive displacement (PD) meter. Increasing such an accuracy may adversely affect the cost of the custody transfer, unless simple models are developed in order to lower the cost, which is the purpose of this work. PD meter consists of a fixed volume rotating chamber. For each turn a pulse is counted, hence, the measured volume is the number of pulses times the volume of the chamber. It does not coincide with the real volume, so corrections have to be made. All the corrections are grouped by a meter factor. Among corrections highlights the slippage flow. By solving the Navier-Stokes equations one can find an analytical expression for this flow. It is neither easy nor cheap to apply straightforward the slippage correction; therefore we have made a simple model where slippage is regarded as a single parameter with dimension of time. The model has been tested for several PD meters. In our careful experiments, the meter factor grows with temperature at a constant pace of 8?10?5?ºC?1. Be warned
E.T.S.I. Minas (UPM)
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
2012
info:eu-repo/semantics/conferenceObject
Presentation at Congress or Conference
Proceedings of the ASME 2012 International Mechanical Engineering. IMECE 2012 | ASME 2012 International Mechanical Engineering. IMECE 2012 | 09/11/2012 - 15/11/2012 | Houston
PeerReviewed
application/pdf
eng
http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1751237
info:eu-repo/semantics/restrictedAccess
info:eu-repo/semantics/altIdentifier/doi/10.1115/IMECE2012-87721
http://oa.upm.es/22880/