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Chemical Engineering Transactions, 2013 A hydrodynamic study of conical spouted beds equipped with draft tube has been carried out for Geldart group D particles. Based on a design of experiments, the performance of conical spouted beds provided with draft tube has been studied by measuring ...
H. Altzibar, I. Estiati, M. Olazar
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Performance Characteristics in Draft Tube - A Review
Journal of Advanced Mechanical Sciences, 2022 The draft tube elbow was modelled using the fundamental geometry of GAMM Francis turbine. Its purpose was to design a draft tube with improved hydrodynamic performance This was accomplished by integrating unfasten resource and commercialized technologies
Arpit Pawar
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Effect of draft tube diameter on nitrogen removal from domestic sewage in a draft tube type reactor
Water Science and Technology, 1998 The effect of the ratio of draft tube diameter to reactor diameter ( D i / D o ) on the efficiency of nitrogen removal from domestic sewage is discussed based on liquid-circulating flow rate and continuous treatment data. More than 2.5 minutes of circulation time in the annulus part, which is required to create an anoxic zone, could be maintained
Yoshio Okuno +3 more
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An Outlook on the Draft-Tube-Surge Study
International Journal of Fluid Machinery and Systems, 2013 If large pressure fluctuation is observed in the draft tube of a Francis turbine at part-load operation, we have generally called it draft-tube-surge. As occurrence of this phenomenon seriously affects the limit of turbine operating range, extensive studies on the surge have been made since proposal of surge-frequency criterion given by Rheingans ...
Shuhong Liu, Michihiro Nishi
exaly +3 more sources
Pressure Analysis in the Draft Tube of a Pump-Turbine under Steady and Transient Conditions
Energies, 2021 Pumped-storage power stations play a regulatory role in the power grid through frequent transition processes. The pressure pulsation in the draft tube of the pump-turbine under transient processes is important for safe operation, which is more intense ...
Jing Yang +3 more
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Machines, 2022 The flow characteristics of the draft tube of a Francis turbine have a significant influence on turbine stability. Numerical simulations were performed for a Francis turbine under three different output conditions of 20%, 100%, and 120% at the rated and ...
Lei Ji +7 more
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Energies, 2021 This paper proposes an original approach to investigate the influence of the geometry of Francis turbines draft tube on pressure fluctuations and energy losses in off-design conditions.
Arthur Favrel +3 more
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Prediction of the particle circulation rate in a draft tube spouted bed suspension dryer [PDF]
Journal of the Serbian Chemical Society, 2006 A model for predicting the particle circulation rate in a draft tube spouted bed dryer with inert particles is proposed and verified. The calculation algorithm requires three input values: the gas velocity in the draft tube one data point for the static ...
Arsenijević Zorana Lj. +2 more
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Jurnal Teknik Mesin, 2023 A Microhydro Power Plant (MHP) with hydrocoil turbine in Sukajaya Lembang Village, Bandung, West Java, has been successfully designed. However, the velocity of the water flow after exiting the hydrocoil turbine is still relatively high, so there is still
Fahmi Hidayat +2 more
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Optimal Design of Double Stage Internal Loop Air-Lift Bioreactor
Energies, 2023 Biorefinery systems play a critical role in the transition towards a sustainable bioeconomy, and bioreactors are a key component in these systems.
Fernando Ramonet +2 more
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