Basic and Applied Thermodynamics — Summer 2022

Define following terms in thermodynamics. 1) Intensive Property 2) Extensive Property 3) Open System.

Explain Quasi-Static Process with suitable example.

State first law of thermodynamics for closed system undergoing a cycle and explain it with the help of joule’s experiment.

Define following terms in thermodynamics. 1) Internal energy 2) Steady flow process 3) Unsteady flow process

Discuss Perpetual motion machine of second kind with neat sketch.

In a steam power plant, feed water is supplied to the boiler with1 rate of 2kg/s. the initial enthalpy and velocity of feed water are 600 kJ/kg and 6 m/s. the water receives 1800 kJ/kg of heat in the boiler. Then steam passes through turbine, and the steam leaving from turbine with velocity 52 m/s and enthalpy 2050 kJ/kg. The inlet is 5 m below the exit of turbine. The heat losses from the boiler and the turbine to the surrounding are 30 kJ/kg. Calculate the power developed by the turbine.

Two Carnot engines work in series between the sources and sink temperatures of 550 Kand 350 K. If both engines develop equal power determine the intermediate temperature.

Explain Clausius statement for second law of thermodynamics with suitable example.

Draw components and arrangement of Carnot vapour cycle and state the processes of this cycle.

Determine expression for air standard efficiency of Diesel cycle with neat sketch of P-Vand T-Sdiagram.

Write a short note on Entropy

Write down and explain processes of Rankine cycle and also indicate it on P-Vand T-Sdiagram.1

Explain Brayton cycle and Derive an expression for air-standard efficiency. ɳ =1- T4−T1 T3−T2

Define Refrigeration and COP of Refrigerator

Write down and explain four processes of Reversed Carnot cycle and also indicate it on P-Vand T-Sdiagram.

Asteam turbine power plant operating on ideal Rankine cycle, receives a steam at 30 bar, 350o Cat the rate of 2kg/s and it exhausts at 0.09 bar. Calculate the following. 1) Net power output 2) steam rate 3) heat rejection in condenser in kW 4) Rankine cycle efficiency Take, h = 2397.7 kJ/kg fg3 h = h = h = 183.3 kJ/kg, V = 0.001009 4 f4 f3 f4 h = 3117.5 kJ/kg, S = 0.622 kJ/kg K 2 f3 S = 6.747 kJ/kg K, S = 7.565 kJ/kg K 2 fg3

Explain various parts and their functions of Vapour Compression Refrigeration system with neat sketch.

Write down and explain processes of Bell-Coleman cycle and also indicate it on P-Vand T-Sdiagram.

In an air standard Otto cycle, the maximum and minimum temperatures are 1600oC and 20oC. The heat supplied per kg of air is 900 kJ. Determine the compression ratio, and the cycle efficiency. Take C = 0.718 kJ/kg Kand Ƴ = 1.4. v

Explain effect of superheating of steam in Rankine cycle

Give the conditions for maximum efficiency of impulse and reaction turbine.

Explain with neat sketch pressure compounding of impulse turbine.

Draw P-Vand T-Sdiagram for Dual cycle

Give the classification of steam turbines.

Explain with neat sketch velocity compounding of impulse turbine.