Maurice Tutor

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Teaching Since: May 2017
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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 12 Nov 2017 My Price 7.00

isolated system of total mass

6.72   An isolated system of total mass m is formed by mixing two equal masses of the same liquid initially at the tem- peratures T1 and T2. Eventually, the system attains an equilibrium state. Each mass is incompressible with constant specific heat c.

(a)     Show that the amount of entropy produced is

  T1 1 T2   

 

2  T T
 

s 5 mc ln c              1/2 d 1  1 22

(b)    Demonstrate that         must be positive.

6.73   A cylindrical rod of length L insulated on its lateral surface is initially in contact at one end with a wall at temperature TH and at the other end with a wall at a lower temperature TC. The temperature within the rod initially varies linearly with position z according to

TH 2 TC

substance model with constant specific heat c, obtain an expression for

(a)     T3 in terms of T1, T2, and the ratio of mass flow rates

m# 1/m# 3.

(b)    the rate of entropy production per unit of mass exiting the chamber in terms of c, T1/T2  and m# 1/m# 3.

(c)     For fixed values of c and T1/T2, determine the value of

m# 1/m# 3    for   which   the   rate   of   entropy   production   is   a

maximum.

Answers

Maurice Tutor
(5)
Status NEW Posted 12 Nov 2017 12:11 PM My Price 7.00

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