STEAM EQUATIONS

Question 1

Vin/vin=

Answer 1

Vout/vout

Question 2

Vin * pin= p is density

Answer 2

Vout * pout

Question 3

h sub x= quality equation

Answer 3

h sub f + x*h sub fg where x is the quality

Question 4

m= mass from volume equation

Answer 4

m= (V liquid/v liquid )+(V vapor/ v vapor)

Question 5

Q=m*delta h when is this equation used

Answer 5

Whenever there is a phase change (example sat liquid to sat vapor)

Question 6

Q = m*c sub p * ∆ T what does each symbol mean

Answer 6

Q is the quantity of heat transferred to or from the object, m is the mass of the object, C sub p is the specific heat capacity of the material the object is composed of, and ΔT is the resulting temperature change of the object.

Question 7

V1/V2=

Answer 7

T1/T2

Question 8

P1/P2

Answer 8

T1/T2

Question 9

(P1)(V1)=

Answer 9

(P2)(V2)

Question 10

(P1*V1)/T1= MUST BE IN DEGREES R

Answer 10

(P2*V2)/T2 MUST BE IN DEGREES R

Question 11

v=V/M

Answer 11

SPECIFIC VOLUME

Question 12

Pv/T

Answer 12

UNIVERSAL GAS CONSTANT R sub 0

Question 13

Pv=R sub0 *T

Answer 13

IDEAL GAS EQUATION

Question 14

PV=nRT

Answer 14

IDEAL GAS LAW
P=PRESSURE
V=VOLUME
n=NUMBER OF MOLES
R=GAS CONSTANT
T=TEMP

Question 15

m vapor/(m liquid + m vapor)= WHAT

Answer 15

X (QUALITY)

Question 16

m liquid /(m liquid +m vapor)= WHAT

Answer 16

M (MOISTURE)

Question 17

SATURATED LIQUID WILL FLASH TO STEM TO RAISE PRESSURE WHEN ____________

Answer 17

PRESSURE IS REDUCED

Question 18

SATURATED STEAM WILL CONDENSE TO LOWER PRESSURE ______________________

Answer 18

WHEN PRESSURE IS INCREASED.

Question 19

(v- v sub f)/v sub fg EQUALS

Answer 19

x (QUALITY)

Question 20

(s-s sub f)/s sub fg EQUALS

Answer 20

x (QUALITY) s is ENTROPY

Question 21

v= xv sub g + Mv sub f

Answer 21

solve for x =(v-v sub f/v sub fg)

Question 22

h=xh sub g + Mh sub f

Answer 22

solve for x =h-h subf/ h sub fg

Question 23

s= xs sub g +M s sub f

Answer 23

solve for x =s-s sub f/s sub fg

Question 24

v=v sub f+x(v sub fg)
change to h or s for specific enthalpy or entropy

Answer 24

steam table specific volume enthalpy and entropy equations.