Results 11 to 20 of about 5,676,493 (290)
Energy Reports, 2022 Different from the above ground pipeline, the soil characteristics and ground conditions have a great impact on the risk of leakage accident for buried natural gas pipeline.
Fanxi Bu +6 more
doaj +1 more source
Laboratory Investigation of the Leakage Characteristics of Unburied HDPE Pipes [PDF]
, 2015 In this research work, the leakage characteristics of the viscoelastic material HDPE is investigated and compared to other materials like uPVC which is elastic and galvanised steel which is rigid in nature. Under no axial loading, the deformation in HDPE
King, R.T.F. Ah +6 more
core +1 more source
Ain Shams Engineering Journal, 2023 25 models are designed according to the orthogonal table, to study the comprehensive relationship between heat transfer and sealing characteristics in straight-through labyrinth seals with different geometrical parameters. The experimental investigations
Zhang Bo +4 more
doaj +1 more source
Journal of Marine Science and Engineering, 2023 The leakage of subsea oil and gas pipelines can have adverse impacts on production progress and the ecological environment. Investigating the sound source and near-field sound propagation of pipeline leaks is essential for understanding the acoustic ...
Kang Zhang +4 more
doaj +1 more source
Influence of flow pattern on leakage acoustic signal of multiphase pipeline
You-qi chuyun, 2021 In order to solve the problem that it is difficult to apply the existing leakage detection mechanism of singlephase pipelines with no consideration to the influence of flow patterns to the multiphase pipelines, the theoretical study and test analysis ...
Yi WANG, Junfei LI, Baoqiang JI, Jian JI
doaj +1 more source
Characteristics of Toxic Gas Leakages with Change in Duration [PDF]
Atmosphere, 2021 One of the emergencies rescue crews have to face is toxic gas leakages. The characteristics of the gas leakages differ with regard to their leakage duration. Long-term releases have plume-like behaviors that can be described by utilizing mean concentrations at individual exposed locations.
Chaloupecká, H. (Hana) +3 more
openaire +3 more sources
Air leakage characteristics in cracked concrete [PDF]
Nuclear Engineering and Design, 1995 Abstract In this paper a mathematical formulation for the air leakage rate through cracks in concrete is given. The formula works well as a good approximation for crack widths up to 1.30 mm and overpressures up to 0.80 MPa. The formula was found by means of systematic air leakage tests using unreinforced test specimens with one “defined single crack”.
U. Greiner, W. Ramm
openaire +1 more source
Time dependent dielectric breakdown and stress induced leakage current characteristics of 8Å EOT HfO2 N-MOSFETS [PDF]
, 2010 In this work we present the time dependent dielectric breakdown (TDDB) characteristics of LaO capped HfO2 layers with an equivalent oxide thickness of 8Å. The layers show maximum operating voltages in excess of 1V. Such high reliability can be attributed
Ragnarsson, Lars-Ake +8 more
core +2 more sources
Simulation Research on Leakage of Vehicle CO2 Air Conditioning System
Zhileng xuebao, 2023 As a safe, efficient, and environmentally friendly natural working fluid, CO2 is the primary choice for future automotive air conditioners. To consider the comfort and safety problem of an excessive CO2 volumetric concentration in the passenger cabin ...
Zong Shuo +4 more
doaj
A Computationally Efficient Hybrid Leakage Model for Modeling Leakage in Positive Displacement Compressors [PDF]
, 2012 An empirical frictional correction factor to the isentropic nozzle model has been developed for application to leakage modeling in scroll, rotary and other similar compressors. This correction factor is derived by calculating the leakage mass flow with a
Groll, Eckhard A. +3 more
core +1 more source