scholarly journals Determination of the energy, mass flow and temperature parameters in combustion systems of agricultural biomass residues

2017 ◽  
Vol 38 (5(SI)) ◽  
pp. 1085-1093 ◽  
Author(s):  
H. Unal ◽  
◽  
A. Kara ◽  
Keyword(s):  
Mass Flow ◽  
Agricultural Biomass ◽  
Biomass Residues ◽  
Combustion Systems

Application of Thermal Sensors for Determination of Mass Flow Rate and Velocity of Flow in Pipes of Hermetic Systems

2019 ◽  
Vol 826 ◽  
pp. 117-124
Author(s):  
Yurii Baidak ◽  
Iryna Vereitina
Keyword(s):  
Temperature Distribution ◽  
Mass Flow Rate ◽  
Cross Section ◽  
Correction Factor ◽  
Mass Flow ◽  
Flow Rate ◽  
Thermal Sensors ◽  
Pipe Surface ◽  
Pipe Cross Section

The paper relates to the field of measuring technologies and deals with the enhancement of thermoconvective method when it is applied for the experimental determination of such hydrodynamics indicators as mass flow rate and velocity of flow by their indirect parameters - capacity of the heater and the temperatures obtained from two thermal sensors, provided that they are located on the hermetic piping system surface. The issue of determination of correction factor on heterogeneity of liquid temperature distribution in the pipe cross section depending on pipe diameter and fluid movement velocity was clarified. According to the results of numerical calculations, the dependencies of temperature gradient on the pipe surface and the correction factor on the heterogeneity of the temperature distribution along the pipe cross-section under the heater in the function of the velocity of flow in pipes of different diameters are plotted. These dependencies specify the thermal method of studying the fluid flow in the pipes, simplify the experiment conduction, are useful in processing of the obtained results and can be applied in measuring engineering.

Determination of thermal conductivity of baled agricultural biomass

2016 ◽  
Vol 58 ◽  
pp. 876-884 ◽  
Author(s):  
A. Erić ◽  
M. Komatina ◽  
S. Nemoda ◽  
D. Dakić ◽  
B. Repić
Keyword(s):  
Thermal Conductivity ◽  
Agricultural Biomass

Mass Flow and Derivative Moment of Inertia Flow in Planar (Geared) Linkages

1992 ◽  
Author(s):  
Zhonghe Ye ◽  
M. R. Smith
Keyword(s):  
Mass Flow ◽  
Kinematic Analysis ◽  
Moment Of Inertia ◽  
Force Balance ◽  
New Concepts ◽  
Prismatic Joints ◽  
Planar Linkages ◽  
First Time ◽  
Shaking Moment

Abstract The paper describes a method for the determination of the conditions for the complete shaking force and shaking moment balancing of planar linkages, including geared linkages, with revolute and prismatic joints. The conditions may be written down without the need for any kinematic analysis of the linkage by the application of two new concepts. These are the concept of mass flow for complete shaking force balance and the concept of derivative moment of inertia flow for complete shaking moment balance, the second of which is described here for the first time. A number of examples demonstrate the power of the method.

scholarly journals Analysis of Selected Properties of Biocomposites Based on Polyethylene with a Natural Origin Filler

Materials ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4182
Author(s):  
Emil Sasimowski ◽  
Łukasz Majewski ◽  
Marta Grochowicz
Keyword(s):  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Wheat Bran ◽  
Natural Aging ◽  
Polyethylene Matrix ◽  
Grain Sizes ◽  
Aging Period ◽  
Processing Properties

The study investigates the effect of the content and size of wheat bran grains on selected properties of a lignocellulosic biocomposite on a polyethylene matrix. The biocomposite samples were made by injection method of low-density polyethylene with 5%, 10% and 15% by weight of wheat bran. Three bran fractions with grain sizes <0.4 mm, 0.4–0.6 mm and 0.6–0.8 mm were used. The properties of the mouldings (after primary shrinkage) were examined after their 2.5-year natural aging period. Processing properties, such as MFR (mass flow rate) and processing shrinkage, were determined. Selected physical, mechanical and structural properties of the produced biocomposite samples were tested. The results allowed the determination of the influence of both the content of bran and the size of its grains on such properties of the biocomposite as: color, gloss, processing shrinkage, tensile strength, MFR mass flow rate, chemical structure (FTIR), thermal properties (DSC, TG), p-v-T relationship. The tests did not show any deterioration of the mechanical characteristics of the tested composites after natural aging.

scholarly journals Determination of the uncertainty of mass flow measurement using the orifice for different values of the Reynolds number

2019 ◽  
Vol 213 ◽  
pp. 02022 ◽  
Author(s):  
Anna Golijanek-Jędrzejczyk ◽  
Andrzej Mrowiec ◽  
Robert Hanus ◽  
Marcin Zych ◽  
Dariusz Świsulski
Keyword(s):  
Reynolds Number ◽  
Mass Flow ◽  
Flow Measurement ◽  
Laboratory Experiments ◽  
Energy Industry ◽  
Maximum Difference ◽  
Know How ◽  
Simulation And Experiment ◽  
Extended Uncertainty

Standard orifice flowmeters are widely used in the chemical and energy industry. Therefore, it is essential to know how accurate the measurements made with these instruments are. The paper presents an estimation of measurement uncertainty of a liquid mass flow using the orifice plate. The authors will present the influence of ranges of the Reynolds number on the estimated uncertainty, obtained on the basis of simulation and laboratory experiments. The research was conducted for the central orifice in the Reynolds number 8,000 < Re < 21,000. The results of estimating the extended uncertainty of the measurement of water flow using simulation and experimental method, are convergent. The maximum difference in the extended uncertainty values of flow measurement for the simulation and experiment was 0.04.10-3 kg/s.

The 501D5A Combustion Turbine

1995 ◽  
Author(s):  
Douglas E. Hintz
Keyword(s):  
Mass Flow ◽  
Heat Rate ◽  
Simple Cycle ◽  
Inlet Temperature ◽  
Modest Increase ◽  
Engine Efficiency ◽  
Combustion Systems

Westinghouse is now offering its latest upgrade of the 501D5 family of combustion turbines. This upgrade engine, designated 501D5A, is based on recent technical advancements successfully incorporated in the 251B12 and 701DA engines. These advancements primarily focus on compressor end modifications for increased mass flow and turbine end modifications for a modest increase in rotor inlet temperature. In addition, modifications were made to the combustion section for use of low emissions combustion systems. This paper will describe these changes incorporated in the upgraded 501D5, along with improvements associated with engine efficiency, which have resulted in an engine with over 10 percent increased power and over 2 percent improved simple cycle heat rate.

Assessment of the energy potential of agricultural biomass residues in Turkey

2019 ◽  
Vol 138 ◽  
pp. 610-619 ◽  
Author(s):  
A.O. Avcıoğlu ◽  
M.A. Dayıoğlu ◽  
U. Türker
Keyword(s):  
Energy Potential ◽  
Agricultural Biomass ◽  
Biomass Residues

Vermiremediation of Urban and Agricultural Biomass Residues for Nutrient Recovery and Vermifertilizer Production

2019 ◽  
Vol 11 (12) ◽  
pp. 6483-6497 ◽  
Author(s):  
Muniyandi Biruntha ◽  
Pitchaimuthu Mariappan ◽  
Balan Karunai Selvi ◽  
James Arockia John Paul ◽  
Natchimuthu Karmegam
Keyword(s):  
Nutrient Recovery ◽  
Agricultural Biomass ◽  
Biomass Residues
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