JNTUK R20 B.Tech Mechanical 2-2 Thermal Engineering – I Material/ Notes PDF Download

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JNTUK R20 B.Tech Mechanical 2-2 Thermal Engineering – I Material/ Notes PDF Download: JNTUK R20 B.Tech Mechanical 2-2 Thermal Engineering – I Material provides comprehensive notes and study resources for students to understand various aspects of thermal engineering. It covers topics such as the reasons and effects of losses in engine operations, functions of different engine systems, and learning about combustion and knocking in S.I. and C.I. Engines.

Additionally, students learn to perform tests on engines to calculate performance and emission parameters. The JNTUK R20 B.Tech Mechanical 2-2 Thermal Engineering – I Notes is available for easy download in PDF format, making it convenient for students to access and study.

JNTUK R20 B.Tech Mechanical 2-2 Thermal Engineering – I Material – Units

Unit 1 Syllabus PDF Download | JNTUK R20 B.Tech Mechanical Thermal Engineering – I Material

Air standard Cycles: Otto, diesel, and dual cycles, its comparison, Brayton cycle

Actual Cycles and their Analysis: Introduction, Comparison of Air Standard and Actual Cycles, Time Loss Factor, Heat Loss Factor, Exhaust Blowdown-Loss due to Gas exchange process, Volumetric Efficiency. Loss due to Rubbing Friction, Actual and Fuel-Air Cycles of CI Engines.

Unit 2 Syllabus PDF Download | JNTUK R20 B.Tech Mechanical Thermal Engineering – I Material

I.C. Engines: Classification – Working principles, Valve and Port Timing Diagrams, – Engine systems – Fuel, Carburettor, Fuel Injection System, Ignition, Cooling and Lubrication, principle of wankle engine, principles of supercharging and turbocharging.

Unit 3 Syllabus PDF Download | JNTUK R20 B.Tech Mechanical Thermal Engineering – I Material

Combustion in S.I. Engines: Normal Combustion and abnormal combustion – Importance of flame speed and effect of engine variables – Types of Abnormal combustion, pre-ignition and knocking (explanation of ) – Fuel requirements and fuel rating, anti-knock additives – combustion chamber – requirements, types.

Combustion in C.I. Engines: Four stages of combustion – Delay period and its importance – Effect of engine variables – Diesel Knock– Need for air movement, suction, compression, and combustion-induced turbulence – open and divided combustion chambers and nozzles used – fuel requirements and fuel rating.

Unit 4 Syllabus PDF Download | JNTUK R20 B.Tech Mechanical Thermal Engineering – I Material

Measurement, Testing, and Performance: Parameters of performance – measurement of cylinder pressure, fuel consumption, air intake, exhaust gas composition, Brake power – Determination of frictional losses and indicated power – Performance test – Heat balance sheet and chart.

Unit 5 Syllabus PDF Download | JNTUK R20 B.Tech Mechanical Thermal Engineering – I Material

Gas Turbines: Simple gas turbine plant – ideal cycle, essential components – parameters of performance – actual cycle – regeneration, inter cooling and reheating –closed cycle type gas turbines.

Jet Propulsion: Principle of operation –classification of jet propulsive engines – working principles with schematic diagrams and representation on t-s diagram – thrust, thrust power, and propulsion efficiency – turbo jet engines – needs and demands met by turbojet – schematic diagram, thermodynamic cycle, performance evaluation (Definitions and Simple Problems).

Rockets: Application – working principle – classification – propellant type – thrust, propulsive efficiency – specific impulse – solid and liquid propellant rocket engines (only Theoretical concepts).

JNTUK R20 B.Tech Thermal Engineering – I Material – Outcomes

• Derive practical applications from fuel-air and air-standard cycles.
• Describe the working principle and components of IC engines.
• Explain the combustion process in CI and SI engines and its effects on engine variables.
• Analyze IC engine performance using performance parameters.
• Discuss gas turbine cycles and systems, and calculate gas turbine efficiency.

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