Page 514 - Design and Operation of Heat Exchangers and their Networks

Appendix 497

for j=1:1: ny1
t1(2, 1, j) = t1(1, nx1, ny1 - j + 1);
end
ntuh = NTUh(2);
ntuc = NTUc(2);
th(:, :) = t1(2, :, :);
tc(:, :) = t2(2, :, :);
tc(:, 1) = t2(2, :, 1);
[th, tc, thm, tcm] = crossflow_unmixed_unmixed ...
(ntuh, ntuc, nx, ny, th, tc);
for i=1:1: nx1
for j=1:1:ny1
s = th(i, j) - t1(2, i, j);
if (abs(s) > abs(smax))
smax = s;
end
t1(2, i, j) = t1(2, i, j) + e ∗ s;
s = tc(i, j) - t2(2, i, j);
if (abs(s) > abs(smax))
smax = s;
end
t2(2, i, j) = t2(2, i, j) + e ∗ s;
end
end
for i=1:1: nx1
t2(1, i, 1) = t2(2, i, ny1);
end
n=n+ 1;
fprintf("%d, %e\n", n, smax);
end

fprintf("smax =%e, thm =%f, tcm =%f, 1-thm =%f, e_h =%f\n", ...
smax, thm, tcm, 1 - thm, epsilon_h);
case-66 % BA_6,6
% analytical
N=3;
N1 =N+1;