Example Definitions ----Example Equations a) constant temperature---1) D P = 0 b) No change with time----2) dE/dt = 0 c) constant pressure----3) T1 = T2 , or D T = 0 d) No heat transfers----4) Q = 0
Example Definitions ----Example Equations
a) constant temperature---1) D P = 0
b) No change with time----2) dE/dt = 0
c) constant pressure----3) T1 = T2 , or D T = 0
d) No heat transfers----4) Q = 0
1. Term Write the definition and equation for steady state
Steady-state----
b) Approximate values for v, u at liquid states can be obtained using saturated liquid data. Since the values of v and u for liquids change very little with pressure at a fixed temperature.
: v (T, p)= vf(___), u(T,p)=uf
c) Write the equation to calculate the maximum theoretical coefficient of performance for the Refrigeration cycle
___________________________________
d) Write the equation to calculate the maximum theoretical coefficient of performance for the Heat pump cycle
__________________________________
e) The thermal efficiency of an irreversible power cycle is always ______ than the thermal efficiency of a reversible power cycle when each operates between the same two thermal reservoirs.
ηirrev _____ ηrev (η____ ηmax)
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