Basic and Applied Thermodynamics — Winter 2020

Explain thermodynamic system ,type of system

Derive steady flow energy equation.

Explain briefly Carnot theorem and corollary Carnot theorem.

Explain point function and path function.

Give the limitations of first law of thermodynamics.

Derive thermal efficiency equation and mean effective pressure equation for diesel cycle.

Explain causes of irreversibility.

Explain principle of increase of entropy.

Asystem having a mass of 40 kg, an initial velocity of 8 m/s, and its final velocity increase to 25 m/s. Its elevation also rises by 50 m. The system receives 20 kJ heat and 8 kJ work. If system delivers 0.003 kWh of electrical energy, calculate the change in the internal energy of the system.

State the limitations of Carnot cycle.

Give brief comparison of Otto, diesel and dual cycle.

Two Carnot engines work in series between the sources and sink temperature of 1200 Kand 300 K. If both engines having same efficiency, determine the intermediate temperature.

Explain inequality of clausius theorem.

Explain briefly Regenerative and feed heating.

A Carnot cycle has lowest pressure and temperature equal to 1 bar and 20 C. Pressure after isothermal compression is 4 bar. Pressure after isentropic compression is 12 bar and after isothermal heat addition process is 6 bar. Calculate (i) The highest temp. in the cycle. (ii) The change in entropy during isothermal expansion. (iii) Heat added to the cycle, (iv) Heat reflected by the cycle.

Explain briefly heat engine and heat pump.

Explain vapour compression system equipment nomenclature.

Asteam plant using Rankine cycle generated superheated steam at 10 bar and 380˚ C. Condensation occurs at 0.06 bar. Find out Rankine efficiency. What will be Carnot efficiency? Neglect feed pump work.

Explain three types of turbine seals?

Enlist assumptions in theoretical vapour compression cycle.

What do you mean by governing of steam turbine? State various methods of governing and explain with neat sketch the Nozzle Control Governing.1

Explain briefly thermodynamic temperature scale.

Define the term “Degree of Reaction”. Explain Parson’s reaction turbine

300 kJ/s of heat is supplied at a constant fixed temperature of 290 Cto a heat engine. The heat rejection takes place at 8.5˚ C. The following results were obtained: (I) 215 kJ/s are rejected. (II) 150 kJ/s are rejected. (III) 75 kJ/s are rejected. Classify which of the result report at reversible cycle or irreversible cycle or impossible results.