Initially 100 kPa pressure and 25 ° C in a piston-cylinder assembly temperature is 2 liters of air. Then the air pressure 620 kPa and It is compressed to a temperature of 160 ° C. Useful work for compression 1.22 kJ The order of ambient pressure and temperature is 100 kPa and 25 ° C. ассepting, a) The availability of air in the initial and final states, b) Minimum work required for the compression process c) Calculate the second-law yield of the process

Thermodynamics Question: Can you please reduce the first law energy balance for: Ideal gas is compressed in a cylinder piston isothermally. No input or output streams. No change in potential or kinetic energy. Please write the first law, show what terms are zero and simplify it. Thank you.

Define various forms of microscopic energies that make up sensible energy.

2. thermodynamics

8. thermodynamics

17. thermodynamics

Humpty-Dumpty with second law of thermodynamics

(a) Differentiate between Mechanical Work and Mechanical Power.

The 1st law of thermodynamics is ΔU = Q –W. Use this statement of the 1st law to show (mathematically) its equivalent statement: “Total energy of the universe is constant”. Here, the universe can be defined as: system + surroundings (everything but the system –everything outside the system). (Hint: this can be shown by two ways-you may either treat system and surroundings as two systems next to each other, or you may treat system + surroundings (universe) as one system.)

* Your answer is incorrect. A piston-cylinder assembly contains 0.7 lb of propane. The propane expands from an initial state where p₁ = 60 lbf/in.² and T₁ = 70°F to a final state where p₂ = 10 lbf/in.² During the process, the pressure and specific volume are related by pv² = constant. Determine the energy transfer by work, in Btu. W = i 3.123 Btu