Technical University “Gh. Asachi” Iasi Mechanical Engineering Faculty Department of Thermotechnics and Thermal Machines

CURRICULA for Steam and Gas Turbines

Category of discipline: Technical Discipline (TD), Compulsory Discipline (CD) Discipline titular: Lecturer DRAGOMIR-STANCIU DANIEL , Ph.D.

Structure of the discipline:

Nr. of hours / week Evaluation Total hours Whole Semester C S L P C S L P discipline 8 4 - 2 - Exam. 56 - 28 84

A. COURSE

General Definitions. Classification of turboengines. Applications.

Thermodynamic Analysis of Turboengines Cycles Steam Cycles. Steam Cycles of Thermal Power Plants. Steam Cycles for Nuclear Power Plants. Gas Cycles. Brayton Cycle. Ericksson Cycle. Optimisation of Gas Cycles. Turbojet Cycle. Combined Cycles.

The Main Types of Steam and Gas Turbines Classification of Turbines. Axial Turbines. Radial Turbines. The Turbofan Engine.

Basic Thermodynamic and Gas Dynamics Relations for Turbines The Ducts and Nozzle Flow Equations. Stagnation Enthalpy and Pressure. Basic Equations for Steady one-dimensional Flow in a Duct. Isentropic Flow. Adiabatic Flow.

Axial Flow Turbine Stage Definitions. Elementary Theory of the Axial Stage. Efficiencies of Axial Stage. Optimisation of Geometrical Parameters for Increase of Efficiency. Calculation Procedure of Axial Stage.

1 Radial Flow Turbine Stage Definitions. Elementary Theory of the Radial Stage. Calculation Procedure of Axial Stage.

Losses and Efficiencies of Turbines Classification. Internal Losses.External Losses. Calculation Procedure of Labyrinth Seal. Efficiency of Steam Turbine Stage. Efficiency of Gas Turbine Stage.

Design Methods Introduction. Design Methods for Steam Turbines. Design Methods for Gas Turbines. Axial Force in Steam and Gas Turbines.

Whole course: 56 hours

APPLICATIONS Laboratory Themes 1. Experimental Study of Nozzle Losses 2. Study of mass flow trough nozzles. 3. Experimental study of Labyrinth Seal. 4.Experimental study of the forces and the moments in axial stage. 5. Characteristic curves in dependence on moment and power for an axial one stage turbine. 6. Efficiency calculus of a radial turbine. 7. Energetically balance of a low power steam turbine.

Whole laboratory: 28 hours

REFERENCES 1. Ursescu, D., Ţârdea, I. Turbomotoare cu abur şi gaze. Vol.I. Procese. Ed. I.P.Iaşi, 1983. 2. Grecu, T., Cârdu, M., Nicolau, I. Turbine cu abur. E.T., Bucureşti, 1976. 3. Grecu, T. Turbine şi turbocompresoare. Vol.I. E.D.P., Bucureşti, 1971. 4. Schröder, G.S. Centrale termoelectrice de putere mare. E.T.. Bucureşti, 1971. 5. Creţa, G. Turbine cu abur şi gaze. E.D.P., Bucureşti, 1981 6. Cantuniar C. Turbomaşini termice. Ed. Matrix Rom. Bucureşti, 1998.

Lecturer Dragomir-Stanciu Daniel, Ph.D.

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