Point Pressure [N/m²]Volume [m*]Temperature [K] A 1.05 x 105 0.010 300 2.61 x 105 0.010 747 B C 2.61 x 105 0.014 1029 А V (a) What is the efficiency of this engine cycle? (b) What is the efficiency for a Carnot cycle working between the same maximum and minimum temperatu
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- P Example of calculation of work P = 1 Atm V%= 1 litre iii ii P V V,12 V In this cycle the system, which is an ideal monatomic gas, undergoes first isothermal (i) then adiabatic (ii) compression steps, each of which halve the volume, then returns to its starting point via first isothermal (iii) and then adiabatic (iv) expansions, each of which double the volume. How much work is done by the system during the cycle if P, is 1 atmosphere and V, =1 litre?Consider a heat engine with a cycle described by the figure, with the volume and pressure at points A, B, C, and D given below. VA = 0.95 × 10-3 m3VB = 3.5 × 10-3 m3PA = 2.65 × 106 N/m2PB = 2.37 × 106 N/m2PC = 0.75 × 106 N/m2PD = 1.29 × 106 N/m2 a)Calculate the net work output, in joules, of the heat engine following path ABCDA.p (kPa) Он 400 5) The figure shows a pV diagram for a cycle of a heat engine for which Q, = 25 J. What is the thermal efficiency of the engine? 200 (Hint: remember to convert cm³ to m³!) A) 17% B) 34% C) 8.5% D) 64% E) 40% 100 V (em³) 200
- Topic: Thermodyamics (also included in Chem). Please explain what the Carnot cycle or a heat engine is about step by step.One mole of an ideal gas is used as the working substance of an engine operating in the cycle shown in the figure below. BC and DA processes are reversible adiabatic.a) Is the gas monoatomic, diatomic or triatomic?b) What is the efficiency and engine?A certain gasoline engine is modeled as a monatomic ideal gas undergoing an Otto cycle, represented by the p-V diagram shown in the figure. The initial pressure, volume, and temperature are p1 = 1.05 × 105 Pa, V1 = 0.035 m3, and T1 = 290 K, respectively. a)The first step in the Otto cycle is adiabatic compression. Enter an expression for the work performed on the gas during the first step, in terms of V1, V2, and p1. b) Calculate the temperature of the gas, in kelvins, at the end of the first step. c)The fourth and last step in the Otto cycle is isochoric cooling to the initial conditions. Find the amount of heat, in joules, that is discharged by the gas during the fourth step.
- What is the thermal efficiency of a Carnot cycle operating between 52oC and 352oC? 84% 56% 48% 15% none of the listed values. 73%Problem #8 In one cycle of an engine, 1.80 kJ of energy is absorbed from a hot reservoir at 280°C, and 1.15 kJ of energy is expelled to a cold reservoir at 25.0°C. a) How much work (in J) is done by the engine in each cycle? b) What is the engine's efficiency? c) How does this compare to the Carnot Efficiency?