Differentiate between the following: 1. Statistical and classical thermodynamics 2. Open system and closed system 3. Intensive properties and extensive properties
[7 marks]Explain first law of thermodynamics for closed system undergoing a cycle.
[7 marks]What is difference between heat and work? Show that heat is a path function and not a property.
[7 marks]Derive the steady flow energy equation for a single stream entering and a single stream leaving a control volume and reduce it for turbine.
[7 marks]An engine manufacturer claims to have developed a heat engine with following conditions: Power developed = 75 kW, fuel burnt = 5 kg/hour, heating value of fuel = 73000 kJ/kg, temperature limits = 1000 and 400 K. is the claim of manufacturer is true or false? Justify your answer.
[7 marks]Define COP. Prove that COP = COP +1 HP R
[7 marks]Prove equivalence of Kelvin-Planck’s and Clausius’ statements.
[7 marks]Show that the efficiency of a reversible engine operating between two given constant temperatures is the maximum.
[7 marks]Alump of steel of mass 10 kg at 627°Cis dropped in 100 kg of oil at 30°C. the specific heats of steel and oil are 0.5 kJ/kgK and 3.5 kJ/kgK respectively. Calculate entropy change for steel, oil and the universe.
[7 marks]Derive expressions for availability of steady flow open system.
[7 marks]With the help of schematic diagram, derive an expression for Rankine cycle. Also represent it on p-v, T-s and h-s diagram
[7 marks]Derive Maxwell’s equations.
[7 marks]Derive equation for air standard efficiency of Brayton cycle.
[7 marks]Write down the first and second TdS equations, and derive the expression for the difference in heat capacities, Cp and Cv.
[7 marks]What is Joule Thomson coefficient? Explain it’s significance.
[7 marks]Describe the method of determination of heating value of solid fuel using Bomb calorimeter.
[7 marks]A 1.5 kg mixture of two gases in 40% and 60% proportion is stored at 20° Cin a closed vessel of 5 m3 capacity. If the gas constant for the constituent gases is 287 kJ/kgK and 294 kJ/kgK, calculate partial pressure, total pressure and gas constant pressure for the mixture.
[7 marks]