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{PROPOSAL 2,pressure of CFWH from reheat pressure, 3FWH}
p_b=150 [bar]
T_max= 500 [c]
p_reheat=30.5 [bar]
T_reheat= 500 [c]
p_c = 0.1 [bar]
p_OFWH=5.83[bar]
p_FIRSTCFWH=1.268[bar]
p_SECONDCFWH=30.5[bar]
eta_turbine=0.85
eta_pump=0.95
z=0.0139
y=0.165
{point 1}
p[1]=p_c
x[1]=0
h[1]=enthalpy(water,p=p[1],x=x[1])
s[1]=entropy(water,p=p[1],x=x[1])
{point 2}
p[2]=p_OFWH
{isentropic}
s_s[2]=s[1]
h_s[2]=enthalpy(water,p=p[2],s=s_s[2])
{Actual}
h[2]=((h_s[2]-h[1])/eta_pump)+h[1]
{point 3}
p[3]=p_OFWH
T[3]=T[13]
{h[3]=4.18*T[3]}
{point 4}
p[4]=p_OFWH
x[4]=0
h[4]=enthalpy(water,p=p[4],x=x[4])
s[4]=entropy(water,p=p[4],x=x[4])
{point 5}
p[5]=p_b
s_s[5]=s[4]
h_s[5]=enthalpy(water,p=p[5],s=s_s[5])
{Actual}
h[5]=((h_s[5]-h[4])/eta_pump)+h[4]
{point 6}
p[6] =p_b
T[6]=T[15]
{h[6]=enthalpy(water,p=p[6],T=T[6])}
{h[6]=4.18*T[6]}
{point 7}
p[7] =p_b
T[7]=T_max
h[7]=enthalpy(water,p=p[7],T=T[7])
s[7]=entropy(water,p=p[7],T=T[7])
{point 8}
p[8]=p_reheat
s_s[8]=s[7]
h_s[8]=enthalpy(water,p=p[8],s=s_s[8])
{Actual}
h[8]=h[7]-((h[7]-h_s[8])*eta_turbine)
{point 9}
p[9] =p_reheat
T[9]=T_max
h[9]=enthalpy(water,p=p[9],T=T[9])
s[9]=entropy(water,p=p[9],T=T[9])
{point 10}
p[10] =p_OFWH
s_s[10]=s[9]
h_s[10]=enthalpy(water,p=p[10],s=s_s[10])
{Actual}
h[10]=h[9]-((h[9]-h_s[10])*eta_turbine)
s[10]=entropy(water,p=p[10],h=h[10])
{point 11}
p[11] =p_FIRSTCFWH
s_s[11]=s[10]
h_s[11]=enthalpy(water,p=p[11],s=s_s[11])
{Actual}
h[11]=h[10]-((h[10]-h_s[11])*eta_turbine)
s[11]=entropy(water,p=p[11],h=h[11])
{point 12}
p[12] =p_c
s_s[12]=s[11]
h_s[12]=enthalpy(water,p=p[12],s=s_s[12])
{Actual}
h[12]=h[11]-((h[11]-h_s[12])*eta_turbine)
s[12]=entropy(water,p=p[12],h=h[12])
{point 13}
p[13]= p_FIRSTCFWH
x[13]=0
h[13]=enthalpy(water,p=p[13],x=x[13])
T[13]=TEMPERATURE(Water,h=h[13],p=p[13])
{point 14}
h[14]=h[13]
{point 15}
p[15]= p_reheat
x[15]=0
h[15]=enthalpy(water,p=p[15],x=x[15])
T[15]=TEMPERATURE(Water,h=h[15],p=p[15])
{point 16}
h[16]=h[15]
{mass balance of SECONDCFWH}
(h[8])*(x)+(h[5])=(h[6])+(x)*(h[15])
{mass balance of FIRSTCFWH}
(z)*(h[11])+(1-x-y)*(h[2])=(h[13])*(z)+(h[3])*(1-x-y)
{mass balance of OFWH}
(h[10])*(y)+(h[3])*(1-x-y)+(h[16])*(x)=h[4]
q_add=(h[7]-h[6])+(h[9]-h[8])*(1-x)
q_rej=(h[12]-h[1])*(1-x-y-z)+(h[14]-h[1])*(z)
w_net=q_add-q_rej
eta_th=w_net / q_addEditor is loading...