A Boeing 777 jet engine, the world's largest, has a power output of 82 MW. It burns jet fuel with an energy density of 43 MJ /kg. What is the engine's fuel consumption rate, in kg/s, if its efficiency is 30%?

The cycle in the figure shows four processes. Process a is an isobaric expansion at $330\mathrm{kPa}$. Process b is a constant volume reduction in pressure to $100\mathrm{kPa}$. Process c returns the gas to its original state where the volume is $100{\mathrm{cm}}^3$. If the gas does $15\mathrm{J}$ of work each cycle, what is the maximum volume of the gas?

The figure shows the cycle of a heat engine that uses a diatomic gas. The temperature at point 1 is $350\mathrm{K}$. What is the thermal efficiency of the engine?

A heat engine does 200 J of work per cycle while exhausting 400 J of waste heat. What is the engine's thermal efficiency?

The power output of a car engine running at 2400 rpm is 500 kW. How much (a) work is done and (b) heat is exhausted per cycle if the engine's thermal efficiency is 20%? Give your answers in kJ.

What are Wₒᵤₜ and QH and (b) the thermal efficiency for the heat engine shown in FIGURE EX21.14?

What are (a) the thermal efficiency and (b) the heat extracted from the hot reservoir for the heat engine shown in FIGURE EX21.16?

A 15 kW electric generator burns 1.2 gal of diesel fuel per hour. The energy density of diesel fuel is 140 MJ/gal. What is the generator's thermal efficiency?