Ships and marine technology � Bunker fuel mass flow meters on receiving vessel � Requirements

2020 ◽  
Keyword(s):  
Mass Flow ◽  
Flow Meters ◽  
Fuel Mass ◽  
Marine Technology ◽  
Bunker Fuel

Thermo Acoustic Flame Transfer Function Prediction for Turbulent Non-Premixed Syngas Flames

2006 ◽  
Author(s):  
Sjoerd G. M. Pater ◽  
Jim B. W. Kok ◽  
Theo. H. van der Meer
Keyword(s):  
Transfer Function ◽  
Mass Flow ◽  
Scale Effects ◽  
Calorific Value ◽  
Inlet Temperature ◽  
The European Union ◽  
Low Frequencies ◽  
Lower Velocity ◽  
Fuel Mass ◽  
Dynamics Simulations

The thermo-acoustic behaviour of non-premixed turbulent syngas flames is investigated by means of transient RaNS Computational Fluid Dynamics simulations. Three cases with two different fuel compositions are considered. Both fuels are combusted in a turbulent non-premixed swirl stabilised mode, and are mixtures of hydrogen, carbon monoxide and nitrogen. One fuel contains methane in addition. The flame transfer function considered here, describes the relation between a perturbation of the fuel mass flow rate and the rate of heat release in the flame. The fuel mass flow is perturbed by an impulse excitation. The investigated geometry is a laboratory scale burner that is designed in the framework of the European Union sponsored HEGSA project. Experimental data are generated in tests at DLR (chemiluminescence and LIF). The CFD results show that methane addition to syngas has a significant influence on the flame transfer function. The addition of methane to syngas induces thermoacoustic damping for higher frequency (¿400 Hz) regions and increases amplification for low frequencies (¡200 Hz). The time delay of the transfer function is affected by the addition of methane due to both calorific value and chemical time scale effects. A decrease in inlet temperature also affects the flame transfer function. This is due to the slower chemistry and lower velocity.

Gas mass-flow meters: Measurement and uncertainties

2013 ◽  
Vol 33 ◽  
pp. 45-54 ◽  
Author(s):  
Manuel Arlindo Amador de Matos ◽  
Nuno José Fernandes Rodrigues
Keyword(s):  
Mass Flow ◽  
Flow Meters

Effects of Burner Diameter and Fuel Type on Smoke Point and Radiation Characteristics of Diffusion Flames

2002 ◽  
Author(s):  
S. F. Goh ◽  
S. Kusadomi ◽  
S. R. Gollahalli
Keyword(s):  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Critical Mass ◽  
Smoke Point ◽  
Fuel Type ◽  
Fuel Flow Rate ◽  
Flame Radiation ◽  
Fuel Mass ◽  
Fuel Flow

The main purpose of this study was to comprehend the effects of burner diameter and fuel type on smoke point characteristics of a hydrocarbon diffusion flame and its radiation emission. The critical mass flow rate of pure fuel at this smoke point was measured. At nine different fractions of the critical mass flow rate, nitrogen gas was supplied along with the fuel to achieve smoke point. At each condition, flame radiation and flame height were measured. The axial radiation profile at the critical fuel mass flow rate for one burner was also measured. Three fuels of differing sooting propensities were used: ethylene (C2H4), propylene (C3H6), and propane (C3H8). Three different burners with inner diameters of 1.2 mm, 3.2 mm and 6.4 mm were used. Results showed that propylene had the highest critical fuel flow rate and the highest nitrogen dilution required to suppress smoking and total flame radiation, followed by ethylene and propane. For all fuels, the curves of nitrogen flow rate required for smoke suppression versus fuel flow rate exhibited a skewed bell shape. The variation of Reynolds number at the critical fuel mass flow rate with the burner diameter showed a linear relation. On the other hand, the variation of total flame radiation with burner diameter was nonlinear.

Active vibration isolation feedback control for Coriolis Mass-Flow Meters

2014 ◽  
Vol 33 ◽  
pp. 76-83 ◽  
Author(s):  
L. van de Ridder ◽  
M.A. Beijen ◽  
W.B.J. Hakvoort ◽  
J. van Dijk ◽  
J.C. Lötters ◽  
...  
Keyword(s):  
Feedback Control ◽  
Mass Flow ◽  
Vibration Isolation ◽  
Flow Meters ◽  
Active Vibration ◽  
Active Vibration Isolation

Flow Calibration and Error Analysis of Dual-Axis Tracking Trough Solar Collector System

2014 ◽  
Vol 654 ◽  
pp. 262-265
Author(s):  
Jian Ling Deng ◽  
Yong Zhu ◽  
Zi Li Zhou ◽  
Rong Rong Zhai ◽  
Ji Feng Song ◽  
...  
Keyword(s):  
Experimental Study ◽  
Mass Flow ◽  
Solar Collector ◽  
Rotation Speed ◽  
Flow Meter ◽  
Flow Measurements ◽  
Flow Meters ◽  
Collector System ◽  
Ultrasonic Flow Meter

In this paper, a dual-axis tracking trough solar collector system is established, and used to measure and calibrate flow rate at different conditions by using the ultrasonic flow meter and mass flow meter, providing important reference for follow-up experimental study. With the changing of the medium’s temperature and the rotation speed variation of the pump, the two flow meters were used to work together to measure the accurate flow measurements, obtaining the measurement error of the mass flow meter. After that, the reason of error and methods used to reduce the error are analyzed.

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