Chapter 5, Problem 5.6P

Derive the formula for the nonflow work in terms of P1,P2, V1 and V2 only for a process involving ideal gas as working fluid and described by PV^n which is constant.

A nitrogen gas goes through a polytropic process with n = 1.3  in a piston cylinder. It starts out at 600 K,600 kPa and ends at 800 K . Is the work positive, negative, or zero?

A solar collector produces a maximum temperature of 98 °C using concentrated sunlight. This energy is used in a heat engine that operates in a 10°C environment. If the solar collector is redesigned to focus the sunlight and reach a higher temperature, what should the maximum temperature be (in °C) to double the efficiency, assuming the heat engine is a Carnot cycle?

I need a quick solution please

Why do you think renewable energy sources are the non-conventional energy sources? Write two consequences for the scenario if we  use only renewable energy source

(II) A nuclear power plant operates at 65% of its maximumtheoretical (Carnot) efficiency between temperatures of 660°Cand 330°C. If the plant produces electric energy at the rateof 1.4 GW, how much exhaust heat is discharged per hour?

Answer in 3 decimal places

A pump handling a liquid raises its pressure from 2 bar to 20 bar. Take density of the liquid as 870 kg/m³. Determine isentropic specific workdone by the pump.

A room is heated by an iron that is left plugged in. Is this a heat or work injection? Take the entire room, including the iron as the system.