Calibration and Optimization of an Insertion Electromagnetic Flowmeter with the Aid of Numerical Analysis

2021 ◽  
pp. 1-34
Author(s):  
Haibo Ma ◽  
Shilei Ma ◽  
Robert Moss ◽  
Mark Fisher ◽  
Armin Silaen ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Energy Consumption ◽  
Precise Measurement ◽  
Electromagnetic Flowmeter ◽  
Volumetric Flow Rate ◽  
Smooth Transition ◽  
Reliable Measurement ◽  
K Factor ◽  
Parametric Studies ◽  
Calibration Time

Abstract Accurate measurement of the volumetric flow rate of working liquids is essential for process control, as well as energy consumption evaluation. Electromagnetic flowmeters have gained popularity in applications where low-pressure drop and low maintenance are required. Dwyer Instruments, Inc. recently developed an adjustable insertion electromagnetic flowmeter (IEF) featuring accurate and reliable measurement. However, unexpected and non-repeatable behavior in the K-factor was observed during the calibration process. The K-factor is the coefficient used to convert the measured electric potential to the flow velocity in pipes, and the non-repeatable behavior imposes challenges for precise measurement. A one-way coupled magnetohydrodynamics model was developed to reduce the effort and time of on-site troubleshooting and optimization. By modeling the measurement process, the transition of flow regimes and the regeneration of the boundary layer on the electrode surface were identified as the causes of the non-repeatable issue. Then, a series of parametric studies were performed to provide reliable solutions. A new design with further embedded electrodes to allow the smooth transition between boundary layers was recommended. The field test showed excellent repeatability by using the new design, and the non-repeatable issue was entirely resolved. The improvement in the IEF design was implemented in production in less than one week, and it reduced the calibration time by 50%.

CFD Analysis and Improvement on an Insertion Electromagnetic Flowmeter

2020 ◽  
Author(s):  
Haibo Ma ◽  
Armin K. Silaen ◽  
Chenn Q. Zhou ◽  
Shilei Ma ◽  
Robert Moss ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Energy Consumption ◽  
Precise Measurement ◽  
Electromagnetic Flowmeter ◽  
Volumetric Flow Rate ◽  
Cfd Analysis ◽  
Reliable Measurement ◽  
K Factor ◽  
Parametric Studies ◽  
Calibration Time

Abstract Accurate measurement of the volumetric flow rate of working liquids is essential for process control, as well as energy consumption evaluation. Electromagnetic flowmeters have gained popularity in applications where low pressure drop and low maintenance are required. Dwyer Instruments, Inc., recently developed an adjustable insertion electromagnetic flowmeter (IEF) featuring accurate and reliable measurement. However, an unexpected and non-repeatable behavior in the K-factor was observed during the calibration process. The K-factor is the coefficient that is used to convert the measured electric potential to the flow velocity in pipes and the non-repeatable behavior imposes challenges for precise measurement. A one-way coupled magnetohydrodynamics model was developed to reduce the effort and time of on-site troubleshooting and optimization. By modeling the measurement process, the transition of flow regimes and the regeneration of boundary layer on the electrode surface were identified as the causes to the non-repeatable issue. Then, a series of parametric studies were performed to provide reliable solutions. A new design with further embedded electrodes was recommended. The field test showed great repeatability by using the new design and the non-repeatable issue was completely resolved. The improvement in the IEF design was implemented in production in less than one week and it reduced the calibration time by 50%.

Research on Vehicle Fuel Consumption Measuring System Based on Radio Frequency Communication Technology

2011 ◽  
Vol 135-136 ◽  
pp. 852-855
Author(s):  
Yin Ping Jiang ◽  
Shan Liu ◽  
Yun Hua Yang
Keyword(s):  
Radio Frequency ◽  
Fuel Consumption ◽  
Communication Technology ◽  
Production Efficiency ◽  
Precise Measurement ◽  
Low Cost ◽  
Working Hours ◽  
High Accuracy ◽  
Measuring System ◽  
Reliable Measurement

At present, the energy crisis is increasingly serious. Energy-saving becomes a practical issues faced by all fields in the life. Considering this, the paper presents a new vehicle consumption measuring system based on intelligent handling and humane design under the promise of accurate measurement as well as low cost. In addition, the use of radio frequency communication technology makes precise measurement of instant and accumulative fuel consumption come true in any working hours. Field experiment results show that the vehicle fuel consumption measuring system has character of facilitate operation, low cost, advanced and reliable measurement method and high accuracy (within 1.5%). It can improve greatly the production efficiency of the internal combustion machine and avoid effectively the waste phenomenon, and be prone to make further application widely.

Analysis and Measurement of Effective Flow-Rate in Flood Grinding

2009 ◽  
Vol 626-627 ◽  
pp. 159-164 ◽  
Author(s):  
Chang He Li ◽  
Ya Li Hou ◽  
Yu Cheng Ding ◽  
Bing Heng Lu
Keyword(s):  
Boundary Layer ◽  
Flow Rate ◽  
High Speed ◽  
Good Description ◽  
Volumetric Flow Rate ◽  
Grinding Wheel ◽  
Work Surface ◽  
Grinding Fluid ◽  
Grinding Conditions ◽  
Grinding Machine

In the grinding process, grinding fluid is delivered for the purposes of chip flushing, cooling, lubrication and chemical protection of work surface. Due to high speed rotating grinding wheel, the boundary layer of air around the grinding wheel restricts most of the grinding fluid away from the grinding zone. Hence, conventional method of delivering grinding fluid that flood delivery is not believed to fully penetrate this boundary layer and, thus, the majority of the grinding fluid is deflected away from the grinding zone. The flood grinding typically delivers large volumes of grinding fluid was ineffective, especially under high speed grinding conditions. In the paper, a theoretical model is presented for flow of grinding fluid through the grinding zone. The model shows that the flow rate through the contact zone between the wheel and the work surface depends on wheel porosity and wheel speed as well as depends on nozzle volumetric flow rate and fluid jet velocity. Furthermore, the model was tested by a surface grinding machine in order to correlate between experiment and theory. Consequently, the effective flow-rate model was found to give a good description of the experimental results and the model can well forecast the effective flow-rate in flood delivery grinding.

scholarly journals Pollution, Energy Consumption and Economic Growth: evidence from India, China and Brazil

2011 ◽  
Vol 2 (5) ◽  
pp. 233-242
Author(s):  
Mohsen Mehrara
Keyword(s):  
Economic Growth ◽  
Energy Consumption ◽  
Environmental Quality ◽  
High Energy ◽  
Smooth Transition ◽  
Conservation Policies ◽  
Bric Countries ◽  
Rapid Economic Growth ◽  
Smooth Transition Regression ◽  
Energy Dependent

This paper examines the relationships between the energy consumption, GDP growth and emission, using Panel Smooth Transition Regression (PSTR) model for BRIC countries over the period 1960 –2006. Our results reveal that environmental quality in these countries has increasingly suffered from high energy consumption. Moreover, rapid economic growth and international trade in energy intensive goods have progressively increased energy consumption. This suggests that excessively high economic growth is a curse for environmental quality and energy conservation policies to reduce unnecessary wastage of energy should be kicked off for energy-dependent BRIC countries.

Effect of the axial gap on the energy consumption of a single-blade wastewater pump

2020 ◽  
pp. 095765092092736
Author(s):  
Federico Caruso ◽  
Craig Meskell
Keyword(s):  
Energy Consumption ◽  
Power Consumption ◽  
Flow Rate ◽  
Volumetric Flow Rate ◽  
Energy Performance ◽  
Navier Stokes ◽  
Gap Size ◽  
Ansys Fluent ◽  
Outlet Pressure ◽  
Pressure Discharge

The effect of the axial gap on the energy consumption of a single-blade wastewater pump (Sulzer XFP PE-2 150E CB1.1) is assessed using unsteady Reynolds-averaged Navier–Stokes simulations with ANSYS Fluent. The numerical model was compared to experimental data with a nominal design configuration (i.e. gap size) to provide confidence in the modeling approach. The global performance of the pump was evaluated in terms of pressure-discharge, torque, and efficiency for a range of volumetric flow rates (110 m3ċh−1 to 254 m3ċh−1) and gap sizes (0.3 mm to 1.15 mm). While it is found that the power consumption at a given flow rate is reduced with increased gap, this is at the expense of a drop in outlet pressure, and hence the efficiency of the pump drops significantly. At the largest volumetric flow rate considered (254 m3ċh−1), the sensitivity of the efficiency to the gap size is −13.5%ċmm−1 and the sensitivity of the reduction in mechanical power consumption to gap size is 0.58 kWċmm−1. These results emphasize the importance of active maintenance during the lifetime of a wastewater pump to avoid a reduction in the energy performance caused by increased gap size.

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