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{PROPOSAL 3, pressure of CFWH from high 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=100[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
h[3]=enthalpy(water,p=p[3],T=T[3])
s[3]=entropy(water,p=p[3],T=T[3])
h[3]=h[16]
h[16]=h[17]
{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
h[6]=enthalpy(water,p=p[6],T=T[6])
s[6]=entropy(water,p=p[6],T=T[6])
h[6]=h[14]
h[14]=h[15]
{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_s[8]-h[7])/eta_pump)+h[7]
s[8]=entropy(water,p=p[8],h=h[8])
{point 9}
p[9] =p_SECONDCFWH
s_s[9]=s[8]
h_s[9]=enthalpy(water,p=p[9],s=s_s[9])
{Actual}
h[9]=((h_s[9]-h[8])/eta_pump)+h[8]
s[9]=entropy(water,p=p[9],h=h[9])
{point 10}
p[10] =p_SECONDCFWH
T[10]=T_max
h[10]=enthalpy(water,p=p[10],T=T[10])
s[10]=entropy(water,p=p[10],T=T[10])
{point 11}
p[11] =p_OFWH
s_s[11]=s[10]
h_s[11]=enthalpy(water,p=p[11],s=s_s[11])
{Actual}
h[11]=((h_s[11]-h[10])/eta_pump)+h[10]
s[11]=entropy(water,p=p[11],h=h[11])
{point 12}
p[12] =p_FIRSTCFWH
s_s[12]=s[11]
h_s[12]=enthalpy(water,p=p[12],s=s_s[12])
{Actual}
h[12]=((h_s[12]-h[11])/eta_pump)+h[11]
s[12]=entropy(water,p=p[12],h=h[12])
{point 13}
p[13] =p_c
s_s[13]=s[12]
h_s[13]=enthalpy(water,p=p[13],s=s_s[13])
{Actual}
h[13]=((h_s[13]-h[12])/eta_pump)+h[12]
s[13]=entropy(water,p=p[13],h=h[13])
{mass balance of SECONDCFWH}
(h[8])*(x)+(h[5])=(h[6])+(x)*(h[14])
{mass balance of OFWH}
(h[11])*(y) + (h[3])*(1-x-y) + (h[15])*(x) = h[4]
{mass balance of FIRSTCFWH}
(z)*(h[12]) + (1-x-y)*(h[2]) = (h[16])*(z) + (h[3])*(1-x-y)
q_add=(h[7]-h[8])+(1-x)*(h[10]-h[9])
q_rej = (1-x-y-z)*(h[13]) + (h[17])*(z) - (h[1])*(1-x-y)
w_net=( (h[7]-h[8]) + (1-x)*(h[10]-h[9]) ) - ( (1-x-y-z)*(h[13]) + (h[17])*(z) - (h[1])*(1-x-y) )
eta_th=w_net / q_addEditor is loading...