Construct a bond graph model of the system

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Reference no: EM131260583

Modify the model from problem 12-16 to include the thermal capacitance of the cylinder as well as convection from the cylinder surface to the atmosphere. The heat transfer coefficient for the cylinder inside wall is h₁, and for the outside wall it is h2. The thermal capacitance of the wall is CW.

Problem 12-16

Consider the system from Problem 12-5. Neglect thermal capacitance of the piston walls but include leakage past the piston to the atmosphere. Using one thermodynamic accumulator and one 4-port isentropic nozzle, construct a bond graph model of the system. The crank radius is R, crank length is L, piston area is A_p, leakage area is A_L, and piston mass is m.

Problem 12-5

Consider the compression of a gas by means of a crank-piston arrangement. Let the cylinder have a single average temperature, and define thermal resistances between the gas temperature T and the cylinder temperature and between the cylinder temperature and the atmospheric temperature T₀. Make a bond graph that would allow you to predict the crank torque τ for low speeds of rotation, ω. (Note that you do not have enough information to evaluate all the system parameters.)

Reference no: EM131260583

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