A thermally isolated system at constant pressure consists of 10 kg of air at a temperature of1000 K and 10 kg of water at 300 K, connected together by a heat engine. What would be theequilibrium temperature of the system if1. the heat engine has a thermal efficiency of zero;2. the heat engine is reversible?[Hint: consider the definition of equilibrium defined by the entropy change of the system.]Assume[432.4 K; 376.7 K]for water:C₁ = 4.2 kJ/kg K;K = Cp/C₁ = 1.0;for air:Cy = 0.7 kJ/kg K;K = Cp/C₁ = 1.4.

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Answered: A thermally isolated system at constant…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Identify the working substance, specify the kind of system and sketch the system boundary. PLEASE ANSWER it in 1hr.
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Question #2 For the following processes, find the changes in h as appropriate. The initial state pressure is p1 = 0.5 MPa. the final state is 2. a. constant volume : v1 = 0.3 m3/kg, p2 = 0.3 MPa; b. constant entropy : s1 = 6.3 kJ/kg K, p2 = 0.15 MPa; c. constant volume : h1 = 2500 kJ/kg, p2 = 0.2 MPa; d. constant enthalpy : s1 = 6.4 kJ/kg K, p2 = 0.2 MPa;
ANSEER C AND D ONLY. SHOW COMPLETE AND LEGIBLE SOLUTION.
find the changes in h as appropriate. The initial state pressure is p1 = 0.5 MPa. the final state is 2. a. constant volume : v1 = 0.3 m3/kg, p2 = 0.3 MPa; b. constant entropy : s1 = 6.3 kJ/kg K, p2 = 0.15 MPa; c. constant volume : h1 = 2500 kJ/kg, p2 = 0.2 MPa; d. constant enthalpy : s1 = 6.4 kJ/kg K, p2 = 0.2 MPa;
This question requires the use of the Thermodynamic Property Tables supplied as additional material.In addition, for steam, the specific ideal gas constant = 461.5 J/kg KA closed system is comprised of pure water substance initially at a temperature of 500 C and a pressure of 20 MPa (state 1).The system undergoes an isochoric process whereby its pressure drops to 0.1 Mpa (state 2).(a) Evaluate the specific entropy and specific volume of the system at state 1.(b) Evaluate the specific entropy, specific volume and temperature of the system at state 2.(c) Sketch the process on a Temperature-specific entropy plot, showing the lines of constant pressure which pass through steps 1 and 2.(d) For state 1 evaluate the specific volume assuming the steam behaves as an ideal gas and comment on your result.
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