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Use of PVDF wire sensors for leakage localization in a fluid-filled pipe
(2020-02-01)
The detection and location of pipeline leakage can be deduced from the time difference between the arrival leak signals measured by sensors placed at the pipe access points on either side of a suspected leak. Progress has ...
ON THE DYNAMIC LOADING EFFECTS OF SOIL ON PLASTIC WATER DISTRIBUTION PIPES AND ITS SIGNIFICANCE FOR LEAK DETECTION USING ACOUSTICS
(Amer Soc Mechanical Engineers, 2019-01-01)
Detection and location of leaks in buried plastic fluid-filled pipes are topics of increasing concern for water distribution companies. Acoustic correlation techniques have been widely used to provide an accurate estimate ...
On the dynamic loading effects of soil on plastic water distribution pipes and its significance for leak detection using acoustics
(2018-01-01)
Detection and location of leaks in buried plastic fluid-filled pipes are topics of increasing concern for water distribution companies. Acoustic correlation techniques have been widely used to provide an accurate estimate ...
Detecting sound waves generated by leaks in buried water distribution pipes
(2017-01-01)
It is common to use guided sound waves to detect leaks or cracks in pipelines. Applications include the nondestructive testing of oil and gas pipelines, which normally takes places at ultrasonic frequencies, as well as the ...
Flow estimation in a steel pipe using guided waves
(2016-09-30)
In this investigation, a flow rate estimation guided wave based scheme in pipes is
proposed. The effect of the fluid over the propagation of longitudinal waves has been
experimentally studied by using several laminar ...
Estudo experimental do desempenho térmico de estruturas capilares de pó de cobre sinterizado em tubos de calor
(Universidade Tecnológica Federal do ParanáPonta GrossaBrasilPrograma de Pós-Graduação em Engenharia MecânicaUTFPR, 2018-09-17)
Heat pipes are heat transfer passive devices known as heat superconductors, due to the use of the latent heat of vaporization of a working fluid in a closed two-phase loop. The heat pipe is essentially composed of three ...
Performance of a heat pipe solar collector
(Asme-amer Soc Mechanical EngNew YorkEUA, 1998)
Influência do fluido de trabalho no desempenho térmico de termossifões
(Universidade Tecnológica Federal do ParanáPonta GrossaBrasilDepartamento Acadêmico de Engenharia MecânicaEngenharia MecânicaUTFPR, 2017-12-11)
Thermosyphons are passive devices that use latent heat to perform heat exchange with a small temperature difference. It is composed of a metallic tube evacuated and filled by diverse working fluids, each of these fluids ...
Desenvolvimento de tubos de calor com microranhuras fabricadas por eletroerosão a fio
(Universidade Tecnológica Federal do ParanáPonta GrossaBrasilPrograma de Pós-Graduação em Engenharia MecânicaUTFPR, 2016-01-26)
In this master's dissertation an alternative fabrication method (wire electrical discharge machining, or wire EDM) was used to manufacture axial microgrooves in heat pipes. With this, material has been removed rather than ...
2D CFD Modeling of Rapid Water Filling with Air Valves Using OpenFOAM
(Cartagena de Indias, 2021-11-04)
The rapid filling process in pressurized pipelines has been extensively studied using mathematical models. On the other hand, the application of computational fluid dynamics models has emerged during the last decade, which ...