Exam 1 | ME 205 - Introduction to Thermodynamics, Quizzes of Thermodynamics

Download Exam 1 | ME 205 - Introduction to Thermodynamics and more Quizzes Thermodynamics in PDF only on Docsity! TERM 1 adiabatic DEFINITION 1 In thermodynamics, an adiabatic process is one that occurs without transfer of heat or mass of substances between a thermodynamic system and its surroundings. TERM 2 polytropic process DEFINITION 2 A polytropic process is a thermodynamic process that obeys the relation: pV^n = constant--> p = constant/ V^n --> W = integral (v1-v2) p dV --> P_2(V_2) - P_1(V_1) / 1 - n TERM 3 Equation of State DEFINITION 3 In physics and thermodynamics, an equation of state is a thermodynamic equation relating state variables which describe the state of matter under a given set of physical conditions, such as pressure, volume, temperature, or internal energy.P = f(T, V)V = f(P, T)T = f(P, V)f(P,T,V) = 0The graph of such a function is a surface and is called a P-V-T surface TERM 4 Energy balance of a Power Cycle DEFINITION 4 W_cycle = Q_in - Q_outthermal efficiency = w_cycle/ Q_in = 1 - Q_out/Q_in TERM 5 Energy balance for a Refrigeration cycle DEFINITION 5 W_cycle = Q_out - Q_incoefficient of performance = Q_in/ W_cycle = Q_in/ Q_out - Q_in = Q_in/Q_out - 1