Проектирование электрической части ТЭЦ установленной мощностью 127 МВт

Объектом исследования является электрическая часть теплоэлектроцентрали. Целью работы является проектирование электрической части теплоэлектроцентрали, выбор основное силовое оборудование, выполнения расчет режима работы трансформатора, исследование вставки постоянного тока. Актуальность проектирования теплоэлектроцентрали заключается в том, что их мощность обычно такова, что может обеспечить электроэнергией город. Так же имеется возможно обеспечить город теплоснабжением.The object of the study is the electrical part of the co-generation plant. The aim of the work is the design of the electrical part of the co-generation plant, the selection of the main power equipment, the calculation of the operating mode of the transformer, the study of the high-voltage direct current link. The actuality of designing a co-generation plant is that their power is usually such that it can provide electricity to the city. It is also possible to provide the city with heat

Построение сложных опционных стратегий с учетом предпочтений инвестора. Приложение

Popularity of investment of means in the share market steadily increases. Therefore, there is a demand of design of various financial products, leaning on objective and desires of the investor. Practical realization of construction complex опционных strategy in view of preferences of the investor is resulted

Virtual design bureau

В статье описывается краткая история Виртуального конструкторского бюро космического приборостроения за 5 лет его существования. В статье можно прочитать об основных, но при этом наиболее важных событиях в жизни ВКБ и кафедры точного приборостроения за этот период. ВКБ сыграло значительную роль в определении направления развитии кафедры. Самыми значимыми проектами являются создание студенческого Центра управления полетами космическими аппаратами и участие взапуске спутника "Томск-ТПУ-120".The article describes a brief 5-year history of the Virtual Design Bureau. In the article you can read about the most important events in the life of the VDB and the Department of Precision Instrument Making for this period. VDB played a significant role in determining the department development direction. The most significant projects are the creation of a student space flight control center and participation in the launch of the Tomsk-TPU-120 satellite

Azimuthal anisotropy at the Relativistic Heavy Ion Collider: the first and fourth harmonics

We report the first observations of the first harmonic (directed flow, v1) and the fourth harmonic (v4), in the azimuthal distribution of particles with respect to the reaction plane in Au+Au collisions at the BNL Relativistic Heavy Ion Collider (RHIC). Both measurements were done taking advantage of the large elliptic flow (v2) generated at RHIC. From the correlation of v2 with v1 it is determined that v2 is positive, or in-plane. The integrated v4 is about a factor of 10 smaller than v2. For the sixth (v6) and eighth (v8) harmonics upper limits on the magnitudes are reported

Particle-type dependence of azimuthal anisotropy and nuclear modification of particle production in Au + Au collisions at sqrt[sNN]=200 GeV

We present STAR measurements of the azimuthal anisotropy parameter v2 and the binary-collision scaled centrality ratio RCP for kaons and lambdas ( Lambda + Lambda -bar) at midrapidity in Au+Au collisions at sqrt[sNN]=200 GeV. In combination, the v2 and RCP particle-type dependencies contradict expectations from partonic energy loss followed by standard fragmentation in vacuum. We establish pT ~ 5 GeV/c as the value where the centrality dependent baryon enhancement ends. The K0S and Lambda + Lambda -bar v2 values are consistent with expectations of constituent-quark-number scaling from models of hadron formation by parton coalescence or recombination

Identified particle distributions in pp and Au + Au collisions at sqrt[sNN]=200 GeV

Transverse mass and rapidity distributions for charged pions, charged kaons, protons, and antiprotons are reported for sqrt[sNN]=200 GeV pp and Au+Au collisions at Relativistic Heary Ion Collider (RHIC). Chemical and kinetic equilibrium model fits to our data reveal strong radial flow and long duration from chemical to kinetic freeze-out in central Au+Au collisions. The chemical freeze-out temperature appears to be independent of initial conditions at RHIC energies

Azimuthally sensitive Hanbury Brown-Twiss interferometry in Au+Au collisions at sqrt[sNN]=200 GeV

We present the results of a systematic study of the shape of the pion distribution in coordinate space at freeze-out in Au+Au collisions at BNL RHIC using two-pion Hanbury Brown-Twiss (HBT) interferometry. Oscillations of the extracted HBT radii versus emission angle indicate sources elongated perpendicular to the reaction plane. The results indicate that the pressure and expansion time of the collision system are not sufficient to completely quench its initial shape

Multistrange baryon production in Au-Au collisions at sqrt[sNN]=130 GeV

The transverse mass spectra and midrapidity yields for Xi s and Omega s are presented. For the 10% most central collisions, the Xi -bar+/h- ratio increases from the Super Proton Synchrotron to the Relativistic Heavy Ion Collider energies while the Xi -/h- stays approximately constant. A hydrodynamically inspired model fit to the Xi spectra, which assumes a thermalized source, seems to indicate that these multistrange particles experience a significant transverse flow effect, but are emitted when the system is hotter and the flow is smaller than values obtained from a combined fit to pi , K, p, and Lambda s

Rho 0 production and possible modification in Au+Au and p+p collisions at sqrt[sNN]=200 GeV

We report results on rho (770)0--> pi + pi - production at midrapidity in p+p and peripheral Au+Au collisions at sqrt[sNN]=200 GeV. This is the first direct measurement of rho (770)0--> pi + pi - in heavy-ion collisions. The measured rho 0 peak in the invariant mass distribution is shifted by ~40 MeV/c2 in minimum bias p+p interactions and ~70 MeV/c2 in peripheral Au+Au collisions. The rho 0 mass shift is dependent on transverse momentum and multiplicity. The modification of the rho 0 meson mass, width, and shape due to phase space and dynamical effects are discussed

Surface Direct Conversion of 511 keV Gamma Rays in Large-Area Laminated Multichannel-Plate Electron Multipliers

We have used the TOPAS simulation framework to model the direct conversion of 511 keV gamma rays to electrons in a micro-channel plate (MCP) constructed from thin laminae of a heavy-metal-loaded dielectric such as lead-glass, patterned with micro-channels (LMCP). The laminae serve as the converter of the gamma ray to a primary electron within a depth from a channel-forming surface such that the electron penetrates the channel surface ('surface direct conversion'). The channels are coated with a secondary-emitting material to produce electron multiplication in the channels. The laminae are stacked on edge with the channels running from the top of the resulting 'slab' to the bottom; after assembly the slab is metalized top and bottom to form the finished LMCP. The shape of the perimeter of a lamina determines the dimensions of the slab at the lamina location in the slab, allowing non-uniform cross-sections in slab thickness, width, and length. The slab also can be non-planar, allowing curved surfaces in both lateral dimensions. The laminar construction allows incorporating structural elements in the LMCP for modular assembly in large-area arrays. The channels can be patterned on the laminae surfaces with internal shapes and structure, texture, and coatings optimized for specific applications and performance. The channels can be non-uniform across the LMCP and need not be parallel in either transverse direction. Surface direct conversion of the gamma ray to an electron eliminates the common two-step conversion of the gamma ray into an optical photon in a scintillator followed by the conversion of the photon into an electron in a photodetector. The simulations predict an efficiency for conversion of 511 keV gamma rays of approximately greater than 30% for a 2.54 cm-thick Pb-glass LMCP. The elimination of the photocathode allows assembly at atmospheric pressure