Why are values not rotated?
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clear all; close all; clc
%conversion constant Celsius-Kelvin
c=273.16;
%load PianoTSacqua.mat non necessario->ho direttamente il grafico
T1= py.CoolProp.CoolProp.PropsSI('T','P',101325,'Q',0,'Water')
T_min=0+c;
T_max=600+c;
T = linspace(T_min,T_max,50000);
P = [0.01 0.1 1 5 30 100 250 500 1000]*10^5;
fh = figure;
for i=1:length (P)
for j=1:length (T)
S(i,j)= py.CoolProp.CoolProp.PropsSI('S','P',P(i),'T',T(j),'Water');
if S(i,j)<0
S(i,j)=NaN;
else
S(i,j)=S(i,j);
end
end
end
curve limite-saturazione costruzione diagramma Entropico
T_crit = py.CoolProp.CoolProp.PropsSI('Tcrit','Water')
P_crit = py.CoolProp.CoolProp.PropsSI('Pcrit','Water')
for j=1:length (T)
if T(j)>=T_min && T(j)<=T_crit;
T_sat(j)=T(j);
sliq(j)= py.CoolProp.CoolProp.PropsSI('S','T',T_sat(j),'Q',0,'Water');
svap(j)= py.CoolProp.CoolProp.PropsSI('S','T',T_sat(j),'Q',1,'Water');
else
T_sat(j)=NaN;
sliq(j)= NaN;
svap(j)= NaN;
end
end
figure(1)
hold on
plot (S,T,'--', 'Color',[17 17 17]/255)
ylim([0 T_max])
xlabel('Entropia (J/(kgK)')
ylabel('Temperatura (K)')
for i=1:length(P)
text(S(i,end), T(end), sprintf('%1.1f MPa', P(i)/10^6, 'Rotation',90))
end
plot(svap,T_sat, 'r-')
plot(sliq,T_sat, 'b-')
ylim([0 873])
save
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Answers (1)
Les Beckham
on 17 Apr 2023
P = [1 2]*10^7; % made up data to test with
S = [1 2;
2 3];
T = [0 70;
0 100];
plot(S(1,:),T(1,:), S(2,:), T(2,:))
grid on
ylim([0 130])
xlim([0 4])
for i=1:length(P)
% text(S(i,end), T(end), sprintf('%1.1f MPa', P(i)/10^6, 'Rotation',90))
% ^ ^
% move the paren at the end to here ^---------------| paren to here
text(S(i,end), T(i,end), sprintf('%1.1f MPa', P(i)/10^6), 'Rotation',90)
% ^ also index T
end
3 Comments
Les Beckham
on 19 Apr 2023
If your problem is solved, would you please "Accept this answer". Thanks.
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