In 1816, Robert Stirling, a Scottish clergyman, patented the Stirling engine, which has found a wide variety of applications ever since, including current use in solar energy collectors to transform sunlight into electricity. Fuel is burned externally to warm one of the engine's two cylinders. A fixed quantity of inert gas moves cyclically between the cylinders, expanding in the hot one and contracting in the cold one. model for its thermodynamic cycle. Consider n moles of an ideal monatomic gas being taken once through the cycle, consisting of two isothermal processes at temperatures 3T and T and two constant-volume processes. Let us find the efficiency of this engine. Find the energy transferred by heat into the gas during the isovolumetric process.
(a) 5/2 x nRTᵢln(3/2)
(b) 3/2 x nRTᵢln(3/2)
(c) 3/2 x nRTᵢln(2/3)
(d) 5/2 x nRTᵢln(2/3)
