Entropy and Exergy

Question 1

Entropy Transfer by Heat is

Answer 1

Path dependent

Question 2

Entropy production is…

Answer 2

The difference between the entropy transfer by heat chosen path versus the reversible path

Question 3

The ____ of a process is always that in which net entropy (___ + ___) increases

Answer 3

direction; system + environment

Question 4

Entropy production represents…

Answer 4

a loss of resources

Question 5

Entropy production can occur in…

Answer 5

the system or the environment (or both)

Question 6

Entropy production is a measure of energy moving from usable to

Answer 6

unusable form

Question 7

Exergy destruction is a direct measure of….

Answer 7

energy moving from usable to unusable form

Question 8

Exergy destruction =

Answer 8

sigma_p * To

Question 9

For a reversible process, the area under the Temp - Entropy (S) curve =

Answer 9

Heat (Q) transferred
dQ = T*dS

Question 10

Enthalpy (h) =

Answer 10

u + p*v

Question 11

For a reversible process, dW =

Answer 11

p*dV

Question 12

SCI stands for

Answer 12

strength of Clausius inequality

Question 13

SCI represents relative measure of…

Answer 13

inefficiencies of a cycle

Question 14

Flow work is…

Answer 14

Rate of energy supplied by a system to push the fluid out

Question 15

enthalpy is measured in

Answer 15

Joules

Question 16

adiabatic means

Answer 16

no heat enters or leaves the system