Measurement and Computing of Integral Characteristics of a Cardiac Electrical Generator

Energy is an expensive basic need for human life, especially energy from fossils, such as crude oil, gas, and coal. In an oil refinery factory or electrical generator unit, where heat is most dominantly utilized, the boiler is used to generate steam. The main problem in a boiler is its uncompleted combustion process because of the incomplete ratio of air–fuel. This problem is caused by the addition of deposits or sealing inside and outside of the tube fire heater which will reduce the performance of fired heater. The objective of this research is to study the effect of steam flow variation on burner and tubing for increasing heat and temperature as well as the quality of steam. This research used a package boiler B&W series 1986 model which can be seen at an oil refinery factory or steam power electrical generator unit in Indonesia. This package boiler has 50kg/hours steam production capacity, qualified superheated steam, maximum pressure and temperature at 7kgs/cms2 and 700oC. Quantitatively, the achievable heat efficiency which corresponded to the temperature increase caused by the steam injection is 41.25% and the specific enthalpy is 12.07%.

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Application of global geopotential models to high-precesion levelling processing

Geodesy and Cartography ◽

10.22389/0016-7126-2017-926-8-2-9 ◽

2017 ◽

Vol 926 (8) ◽

pp. 2-9

Author(s):

V.V. Popadyev ◽

D.A. Kuliev

Keyword(s):

Field Model ◽

Direct Evaluation ◽

Gravity Field Model ◽

Bouguer Anomalies ◽

Free Air ◽

Geopotential Models ◽

Integral Characteristics ◽

Indirect Evaluation ◽

Gravity Map ◽

High Degree

The article studies the properties of the high-degree gravity field model EGM-2008 in the calculation of integral characteristics at large distances several times greater than the spatial resolution of the model. As an example of an indirect evaluation of a high-degree model, a gravimetric correction was computed into the sum of the measured elevations along the line of the high-precision I class leveling of the Krasnovodsk – Chardzhou line located in Turkmenistan. Using the calculator ICGEM, the Bouguer anomalies were calculated at each point of the line, then the attraction of the Bouguer layer (used heights are from catalog) excluded for the transition to free-air anomalies. In parallel, for a direct evaluation of the model, a regular grid of Bouguer anomalies with a step of 2 angular minutes within line area was also obtained, which were then compared with the anomalies from the gravity map J-40 of scale 1

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Płyty kołowe Hencky’ego–Bolle’a spoczywające na podłożu sprężystym Własowa

Przegląd Naukowy Inżynieria i Kształtowanie Środowiska ◽

10.22630/pniks.2020.29.4.38 ◽

2020 ◽

Vol 29 (4) ◽

pp. 444-453

Author(s):

Mykola Nagirniak

Keyword(s):

Differential Equation ◽

Circular Plate ◽

Significant Influence ◽

Single Layer ◽

Medium Thickness ◽

Cross Sectional ◽

Equation Solution ◽

Integral Characteristics ◽

Two Parameter ◽

Plate Deflection

The work presents the equations of the theory of symmetrical plates, resting on one-way, single-layer, two-parameter Vlasov’s subsoil. Two cases of differential equation solution of the plate deflection of thin and medium thickness on the ground substrate were analyzed depending on the size of the integral characteristics UÖD and 6ÖD. The example of loading the circular plate with a Pk load evenly distributed over the edge was considered and shows dimensionless graphs of deflection, bending torques and transverse forces in the plate and in the ground subsoil. The effect of the Poisson’s coefficient of the plate on deflection values and cross-sectional forces was investigated. The Poisson’s number has been shown to have a significant influence on deflection values and bending torque, however shown negligible effect on transverse forces values.

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Linear Energy Density and the Flux of an Electric Field in Proca Tubes

Symmetry ◽

10.3390/sym13040640 ◽

2021 ◽

Vol 13 (4) ◽

pp. 640

Author(s):

Vladimir Dzhunushaliev ◽

Vladimir Folomeev ◽

Abylaikhan Tlemisov

Keyword(s):

Scalar Field ◽

Electric Field ◽

Higgs Field ◽

Meissner Effect ◽

Coupling Constant ◽

Cylindrically Symmetric ◽

Integral Characteristics ◽

Energy And Momentum ◽

Energy And Momentum Densities ◽

Higgs Scalar

In this work, we study cylindrically symmetric solutions within SU(3) non-Abelian Proca theory coupled to a Higgs scalar field. The solutions describe tubes containing either the flux of a color electric field or the energy flux and momentum. It is shown that the existence of such tubes depends crucially on the presence of the Higgs field (there are no such solutions without this field). We examine the dependence of the integral characteristics (linear energy and momentum densities) on the values of the electromagnetic potentials at the center of the tube, as well as on the values of the coupling constant of the Higgs scalar field. The solutions obtained are topologically trivial and demonstrate the dual Meissner effect: the electric field is pushed out by the Higgs scalar field.

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