Name of the University : Mahatma Gandhi University
Department : Mechanical Engineering
Degree : B.Tech
Subject Code/Name : ME 010 603/Thermal systems & Applications
Sem : VI
Website : mgu.ac.in
Document Type : Model Question Paper
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/mgu.ac.in/5144-ME%20%20603.doc
Thermal Systems Question Paper
Sixth Semester :
B.TECH Degree Examination :
Model Question Paper :
Related : MGU AI010606L01 Mechatronics B.Tech Model Question Paper : www.pdfquestion.in/5128.html
ME 010 603: Thermal systems & Applications
Time: 3hrs
Max. Marks: 100
PART – A
1. Explain briefly how steam boilers are classified
2. Why are steam turbines compounded? Explain the different methods of compounding
3. Explain the principle of working of a solar pond
4. What are the advantages and disadvantages of closed cycle gas turbine over open cycle gas turbine?
5. Define the term overall loss coefficient
(5×3=15)
PART – B
6. What do you understand by the term Critical Pressure as applied to steam nozzles?
7. Differentiate between Open and Closed gas turbines.
8. Explain the process of governing the speed of a steam turbine.
9. Explain the working of concentrator type collector.
10. Discuss various types of fuels used in thermal power plant
(5×5 = 25)
PART – C
(Answer all questions)
11. Explain any four boiler mountings with neat sketch.
or
12. 0.085m3 drum contains saturated water and water vapour at 334 ° C. find the mass of each if their volumes are equal
13 a) Explain steady flow energy equation as applied to a steam nozzle. Explain its use in the calculation of steam velocity at the exit of a nozzle
or
14) Dry saturated steam at a pressure of 8 bar enters a convergent divergent nozzle and leaves at 1.5 bar. If the flow is isentropic and corresponding expansion index is 1.135,find the ratio of cross sectional area at exit and throat for maximum discharge.
15. a) Discuss the means of improving the work output and thermal efficiency of the simple open cycle gas turbine
Or
16) A gas turbine plant works between the temperature limits of 1152 K and 288K.Isentropic efficiencies for compressor and turbine are o.85 and 0.8 respectively. Determine the optimum ratio for maximum work output and also find maximum cycle thermal efficiency.
17 a) State the advantages and disadvantages of solar energy.
b) With a neat sketch explain the working of a parabolic concentrator collector
or
18.a) Write down an energy balance equation of a liquid flat plate collector. Explain various terms of this equation.
b) Define the term instantaneous collection efficiency.
19. discuss various dust and ash handling systems of a power plant
or
20. describe the help of a neat sketch the operation of an electrostatic precipitator (5×12=60)
Syllabus
ME010 603 Thermal Systems and Applications
Objectives :
** To impart the basic concepts of different types of engines
** To develop an idea about various thermal systems..
Module I : (12 hours)
Steam Engineering : Properties of steam – wet, dry and superheated steam – dryness fraction – enthalpy and internal energy – entropy of steam – temperature entropy diagram – process – Mollier chart – Rankine cycle for wet, dry and superheated steam. Steam Generators – classification – modern steam generators – boiler mountings and accessories.
Module II : (12 hours) Steam nozzles – Mass flow rate – throat pressure for maximum discharge – throat area – effect of friction – super saturated flow. Steam turbines: velocity triangles, work done, governing, and efficiencies.
Module III : (12 hours)
Gas turbine Plants – Open and closed cycles – thermodynamics cycles – regeneration, re heating – inter cooling – efficiency and performance of gas turbines. Rotary Compressors – Analysis of rotary compressors – centrifugal and axial compressors and reciprocating compressors.
Combustion – combustion chambers of gas turbines – cylindrical, annular and industrial type combustion chamber – combustion intensity – combustion chambers efficiency – pressure loss combustion process and stability loop.
Module IV : (12 hours)
Introduction to solar energy – solar collectors – Liquid flat plate collectors – principle – thermal losses and efficiency – characteristics – overall loss coefficient – thermal analysis – useful heat gained by fluid – mean plate temperature – performance – focussing type solar collectors – solar concentrators and receivers – sun tracking system – characteristics – optical losses – thermal performance – solar pond – solar water heating – solar thermal power generation (Description Only)
Module V : (12 hours)
Thermal power plants : layout and operation of steam and diesel power plants – coal burners – stockers – cooling ponds & towers – chimneys – draught – dust collectors – precipitators – feed water heaters – evaporators – steam condensers – coal handling – ash handling.