Question

(a)State the first and second laws of thermodynamics. Use one example for each law to describe how they are applied in engineering practices. (b)A given amount of ideal gas is expanded from volume VA to VB as shown below in Figure Q 2. Use the characteristics of state functions to design a reversible path and prove that the process is irreversible. (c)Carbon dioxide gas (CO2) enters an adiabatic compressor at 0.2 MPa and300 K with a mass flow rate of 1000 m3 h-1 and leaves at 1.0 MPa.Neglecting kinetic energy changes and treating CO2 as an ideal gas,determine: (i)the work input through the compressor; (ii) the power consumption of the compressor if it works at an efficiency of 75%.

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