Effect of Condenser Pressure (Vacuum) On Efficiency And Heat Rate of Steam Turbine

Electricity plays a vital role in our daily life. The power demand is increasing day by day due to increasing the population. The power is required for Industrialization and development of nation. Our country mainly depends on thermal power plant for electrical supply. In thermal power plants turbine is considered to be HEART of the plant. Maintained required condenser parameters to improve the performance and efficiency of turbine and these parameters direct impact the economical growth of power plant. This venture includes the development highlights, start up, and Shut down, crisis operation, safe operation and assurances of the 32 mw steam turbine. The primary point of this venture is investigation the how to impact the condenser weight (vacuum) on effectiveness and warmth rate of regenerative steam turbine by scientific figurings

Thermal Analysis Of A Gas Turbine Rotor Blade

:  A turbine rotor blade is the individual component which makes up the turbine section of a gas turbine. The blades are responsible for extracting energy from the high temperature, high pressure gas produced by the combustor. The turbine blades are often the limiting component of gas turbines. To survive in this difficult environment, turbine blades often use exotic materials like AL 2024 and T6 alloys.Turbine rotor blade is designed and analyzed in ANSYS 14.

Efficiency Improvement Of An Electrical Transformer By Design Development Of FINS

A transformer is an electrical gadget that exchanges electrical energy between two or more circuits through electromagnetic affectation. Normally, transformers are utilized to increment or diminish the voltages of exchanging current in electric force applications; a differing current in the transformer's essential winding makes a changing attractive flux in the transformer center and a shifting attractive field impinging on the transformer's auxiliary winding. This fluctuating attractive field at the auxiliary winding affects a shifting electromotive power (EMF) or voltage in the optional winding. Making utilization of Faraday's Law in conjunction with high attractive porousness center properties, transformers can along these lines be intended to proficiently change AC voltages starting with one voltage level then onto  another within power networks.   Copper losses are resistive and proportional to load current and are sometimes called “load losses”, as the transformer is loaded; heat is produced in the primary and secondary windings and connections due to losses. At low loads, the quantity of heat produced will be small but as load increases, the amount of heat produced becomes significant at full load, the windings will be operating at or near their design temperature, Figure shows the relationship between load-current and the heat produced in transformer windings and connections. If the ambient temperature is too high then the transformer will automatically fail to work , even though some coolants are employed in the transformers to carry away the heat, they are not enough during summer seasons so there is a need to develop better cooling systems In this project we develop better cooling system for a transformer using 3D modelling and Finite Element Methods so that the transformers will work without fail. For 3D modelling we use Catia V5 R20 and for finite element analysis we use Ansys 15.

Thermal Analysis of Single Pass GRITH Weld for Different Materials

Girth welds are the different types of arc welding processes applied in the joining of two pipes along the circumference during a phase construction of a pipeline depending on the ease of implementation and the environmental factor. They are used in making circumferential welds in pipeline and underground systems. They are used in the pipeline industry. Here in this project we have designed a pipe which has be welded to a flange by single pass girth welding. Here we are going to consider two welding cases i.e. normal welding process and welding with an Al block under the welding portion. We are going to consider these two welding conditions for girth welding of the pipe made of two different materials i.e. Stainless Steel and Carbon steel alloy. Thermal analysis is done to the product to study the weld behavior of the component. The Component is designed in CATIA V5 and Thermal analysis is carried out in ANSYS

3d Modeling and Detailing of Silumin Piston With Static Analysis

Piston is the part of engine which converts heat and pressure energy liberated by fuel combustion into mechanical works. Engine piston is the most complex component among the automotives. Weight reduction has been gaining importance in automobile field because reducing in weight decreases load on the engine and thus increasing efficiency of the engine. As we all Know that Piston is made of Aluminum Alloy Such that its weight is less. The automobile industry has shown increased interest in replacing the Piston with the material having high strength to weight ratio.   Therefore the objective of this project is to present a general study on the performance comparison of composite Piston and Aluminum Alloy Piston. Dimensions and specifications used in modeling are collected from the actual Piston of Hero-Honda Splendor Bike. The Piston is modeling in solid Works

Analysis the effect of condenser pressure (vacuum) on efficiency and heat rate of steam turbine

Electricity plays a vital role in our daily life. The power demand is increasing day by day due to increasing the population. The power is required for Industrialization and development of nation. Our country mainly depends on thermal power plant for electrical supply. In thermal power plants turbine is considered to be HEART of the plant. Maintained required condenser parameters to improve the performance of turbine and these parameters direct impact the economical growth of power plant This project involves the construction features, start up, and Shut down, emergency operation and safety protections of the 32 mw steam turbine. The main aim of this project is analysis the how to effect the condenser pressure (vacuum) on efficiency and heat rate of regenerative steam turbine by mathematical calculations

Periodic orbit spectrum in terms of Ruelle--Pollicott resonances

Fully chaotic Hamiltonian systems possess an infinite number of classical solutions which are periodic, e.g. a trajectory ``p'' returns to its initial conditions after some fixed time tau_p. Our aim is to investigate the spectrum tau_1, tau_2, ... of periods of the periodic orbits. An explicit formula for the density rho(tau) = sum_p delta (tau - tau_p) is derived in terms of the eigenvalues of the classical evolution operator. The density is naturally decomposed into a smooth part plus an interferent sum over oscillatory terms. The frequencies of the oscillatory terms are given by the imaginary part of the complex eigenvalues (Ruelle--Pollicott resonances). For large periods, corrections to the well--known exponential growth of the smooth part of the density are obtained. An alternative formula for rho(tau) in terms of the zeros and poles of the Ruelle zeta function is also discussed. The results are illustrated with the geodesic motion in billiards of constant negative curvature. Connections with the statistical properties of the corresponding quantum eigenvalues, random matrix theory and discrete maps are also considered. In particular, a random matrix conjecture is proposed for the eigenvalues of the classical evolution operator of chaotic billiards

Scarred Patterns in Surface Waves

Surface wave patterns are investigated experimentally in a system geometry that has become a paradigm of quantum chaos: the stadium billiard. Linear waves in bounded geometries for which classical ray trajectories are chaotic are known to give rise to scarred patterns. Here, we utilize parametrically forced surface waves (Faraday waves), which become progressively nonlinear beyond the wave instability threshold, to investigate the subtle interplay between boundaries and nonlinearity. Only a subset (three main types) of the computed linear modes of the stadium are observed in a systematic scan. These correspond to modes in which the wave amplitudes are strongly enhanced along paths corresponding to certain periodic ray orbits. Many other modes are found to be suppressed, in general agreement with a prediction by Agam and Altshuler based on boundary dissipation and the Lyapunov exponent of the associated orbit. Spatially asymmetric or disordered (but time-independent) patterns are also found even near onset. As the driving acceleration is increased, the time-independent scarred patterns persist, but in some cases transitions between modes are noted. The onset of spatiotemporal chaos at higher forcing amplitude often involves a nonperiodic oscillation between spatially ordered and disordered states. We characterize this phenomenon using the concept of pattern entropy. The rate of change of the patterns is found to be reduced as the state passes temporarily near the ordered configurations of lower entropy. We also report complex but highly symmetric (time-independent) patterns far above onset in the regime that is normally chaotic.Comment: 9 pages, 10 figures (low resolution gif files). Updated and added references and text. For high resolution images: http://physics.clarku.edu/~akudrolli/stadium.htm

Associated Production of Bottomonia and Higgs Bosons at Hadron Colliders

We study the associated production of bottomonia and Higgs bosons at hadron colliders within the factorization formalism of nonrelativistic quantum chromodynamics providing all contributing partonic cross sections in analytic form. While such processes tend to be suppressed in the standard model, they may have interesting cross sections in its minimal supersymmetric extension, especially at large values of tan(beta), where the bottom Yukawa couplings are enhanced. We present numerical results for the processes involving the lighter CP-even h^0 boson and the CP-odd A^0 boson appropriate for the Fermilab Tevatron and the CERN LHC.Comment: 33 pages, 7 figures, Latex, to appear in Phys. Rev.

Current status of turbulent dynamo theory: From large-scale to small-scale dynamos

Several recent advances in turbulent dynamo theory are reviewed. High resolution simulations of small-scale and large-scale dynamo action in periodic domains are compared with each other and contrasted with similar results at low magnetic Prandtl numbers. It is argued that all the different cases show similarities at intermediate length scales. On the other hand, in the presence of helicity of the turbulence, power develops on large scales, which is not present in non-helical small-scale turbulent dynamos. At small length scales, differences occur in connection with the dissipation cutoff scales associated with the respective value of the magnetic Prandtl number. These differences are found to be independent of whether or not there is large-scale dynamo action. However, large-scale dynamos in homogeneous systems are shown to suffer from resistive slow-down even at intermediate length scales. The results from simulations are connected to mean field theory and its applications. Recent work on helicity fluxes to alleviate large-scale dynamo quenching, shear dynamos, nonlocal effects and magnetic structures from strong density stratification are highlighted. Several insights which arise from analytic considerations of small-scale dynamos are discussed.Comment: 36 pages, 11 figures, Spa. Sci. Rev., submitted to the special issue "Magnetism in the Universe" (ed. A. Balogh