Thermal-Hydraulic Performance of Printed Circuit Heat Exchanger in ...

Head loss in PCHE
∆p
=
ρg∆H
=
115 o 100 o
∑
m
ρ K
m
b
U
2
2
m
+
∑
m
ρ 0.316Re
m
−0.25
loss in elbows + loss in a straight pipe
La
U
md 2
2
m
I. K b =K 1 *K 2 *K 3
from Hydraulic Engineering, A.
II.
from Hydraulic Engineering, A. Lencastre, , 1987
from JSME Textbook, 2003
III. CFD FLUENT
:
∆
p calc
∆p
− ∆p
exp
exp
= 14 − 37%
2⎛θ
⎞
4⎛θ
⎞
∆p K = 0.946sin ⎜ ⎟ + 2.047sin ⎜ ⎟
:
calc
− ∆pexp
= 6 − 32%
b
⎝ 2 ⎠ ⎝ 2 ⎠
∆pexp
: N/A yet
2005/1/5 Tokyo Institute of Technology 17