Term
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Definition
| state that is identified by values of a suitable set of parameters known as state variables, state parameters, or thermo variables. |
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| What are some state variables? |
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Definition
| Pressure, Temperature, density, specific internal energy, specific enthalpy, specific entropy. |
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| What is the state principal phase rule? |
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Definition
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Term
| Critical Temperature(T_c)? |
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Definition
| the max temperature at which a liquid and vapor phase can coexist in equilibrium |
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Term
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Definition
| Pressure at the critical point on a PVT plot. |
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Term
| T/F? In a 2 phase region temperature and pressure are independent of one another? |
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Definition
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Definition
| density varies little with pressure |
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Definition
| Is 100% a liquid at its saturation temperature or saturation pressure |
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Term
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Definition
| Is 100% a vapor at its saturation temp or saturation pressure. |
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Term
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Definition
| x = mass of vapor/ (mass of vapor+mass of liquid) |
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| Two phase region equations |
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Definition
specific volume= (1-quality)(v_f)+(x)v_g
u=(1-x)u_f+(x)u_g |
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Term
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Definition
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| Incompressed Fluid approximation |
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Definition
delta(h) = c*delta(T)+ specific volume*delta(P)
change in enthalpy = "cat"+"vap" |
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Term
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Definition
delta (u) = C_v*delta(T)
*holds for both constant Volume/Pressure |
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| Compressibility Chart eqn |
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Definition
| Z=Pv/RT v = specific volume* |
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Term
| Liquid/Solid/Ideal gas approximation |
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Definition
* constant pressure/constant heat capacity
delta(h) = C_p*delta(T)
change in enthalpy="cat" |
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Term
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Definition
No Q, No W, No PE :
h_out-h_in=0.5(V_out^2-V_in^2) |
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Term
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Definition
h_out=h_in
*if no shaft work |
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Term
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Definition
m_1(h1_out-h1_in)=-m_2(h2_out-h2_in)
* if no shaft work, negligible KE/PE |
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