Department of Mechanical Engineering

MEP341 Thermal Engineering Laboratory (0-0-3)

II Semester 2011-2012

Attendance Policy and Evaluation

Jan 2, 2012

Attendance

• Attendance is compulsory in all 14 classes as mentioned above. Missing any one of these turns will be considered equivalent to missing one experiment. Please report in time.
• In general, a student missing a turn will not be allowed to make-up for the missed turn.
• Only if a student is unwell and sends information about the same by the beginning of the lab class, he/she may be allowed to make-up for the missed experiment on verification of the genuineness of the cause.
• If a student is missing the class for Robocon or any other academic event, prior and written permission of the instructor must be sought if the missed experiment has to be made-up for.
• In any case, no student will be allowed to make-up for more than one experiment during the entire semester.
• Missed experiment must be done only during the make-up turn in the last week of the semester.
• Students must report in time. Students arriving late will not be allowed to work in the lab.

Evaluation

Ø Evaluation in the lab for each experiment will have two components : (a) the preparedness for the experiment and the seriousness with which the experiment is conducted. (b) the report and the clarifications on the report, if any.

Ø There will be a self-study component in the course : the students will be expected to read about the various measuring instruments used in thermal engineering. An outline of the same with references is being provided.

Ø There will be two common quizzes. The first one will be to test the self-study part covering the basic concepts of the different measuring instruments. The second quiz will be to test the students’ understanding of the experiments performed by them.

Weightages

Laboratory work and reports 60%

Common Quiz I 15%

Common Quiz II 25%

Tentative dates for Quizzes

Common Quiz I : Feb 15 (Tue), 2010, 5.00-6.00 p.m. (Venue to be announced later)

Common Quiz II: April 19 (Tue), 2010, 5.00-6.30 p.m. (Venue to be announced later)

Instructors :

Dr Prabal Talukdar (Office : III 368) : For Monday, Wednesday and Thursday

Dr Sangeeta Kohli (Office : III 367) : For Tuesday and Friday (Course Co-ordinator).

Topics for Self-study

Errors in Experimentation – Systematic and Random errors; Precision and Accuracy of Measuring Instruments; Uncertainty Analysis

Basic Principles of the Following Measurements

Temperature : Thermocouples, Resistance Temperature Detectors (RTDs), Thermistors

Pressure : Manometers, Bourdon Gauge, Pressure Transducers.

Fluid Flow : Pitot Probe, Pitot-Static Probe, Turbine Flowmeters, Venturimeter, Orificemeter, Vane type Anemometer, Hot wire Anemometer, Rotameter.

Torque : Different types of Dynamometers – belt, eddy current, hydraulic.

Force : Load Cells.

References

1. E.O. Doeblin, Measurement Systems – Application and Design, McGraw Hill.
2. J.W. Dally, W.F. Riley and K.G. McConnell, Instrumentation for Engineering Measurements, John Wiley & Sons.
3. B.C. Nakra and K.K. Chaudhry, Instrumentation, Measurement and Analysis, Tata McGraw Hill.
4. www.omega.com
5. Any other book on instrumentation and measurements from the library (several books are available).