The effect of heat conduction through the adiabatic section on the oscillating motion and heat transfer performance in an oscillating heat pipe (OHP) was investigated experimentally. Two, closed loop, six-turn OHPs were constructed: one with a separate copper block for the evaporator and condenser sections (split block design) and one using a single continuous copper block for the evaporator, adiabatic, and condenser sections (continuous block design). The results show that the presence of heat conduction directly from the evaporator wall to the adiabatic section and from the adiabatic section to the condenser of a heat pipe will reduce the oscillating amplitude of the evaporator, adiabatic, and condenser temperatures. It was also found that in addition to a higher level of temperature uniformity, the continuous block design results in better heat transfer performance than a heat pipe without conduction through the adiabatic section.

References

References
1.
Akachi
,
H.
, 1990, “
Structure of a Heat Pipe
,” U.S. Patent No. 4,921,041.
2.
Ma
,
H. B.
,
Wilson
,
C.
,
Borgmeyer
,
B.
,
Park
,
K.
,
Yu
,
Q.
,
Choi
,
S. U. S.
, and
Tirumala
,
M.
, 2006, “
Effect of Nanofluid on the Heat Transport Capability in an Oscillating Heat Pipe
,”
Appl. Phys. Lett.
,
88
(
14
), p.
143116
.
3.
Ma
,
H. B.
,
Wilson
,
C.
,
Yu
,
Q.
,
Park
,
K.
,
Choi
,
U. S.
, and
Tirumala
,
M.
, 2006, “
An Experimental Investigation of Heat Transport Capability in a Nanofluid Oscillating Heat Pipe
,”
ASME J. Heat Transfer
,
128
(
11
), pp.
1213
1216
.
4.
Wilson
,
C.
,
Borgmeyer
,
B.
,
Winholtz
,
R. A.
,
Ma
,
H. B.
,
Jacobson
,
D.
, and
Hussey
,
D.
, “
Thermal and Visual Observation of Water and Acetone Oscillating Heat Pipes
,”
ASME J. Heat Transfer
,
133
(
6
), p.
061502
.
5.
Borgmeyer
,
B.
, and
Ma
,
H. B.
, 2007, “
Experimental Investigation of Oscillating Motions in a Flat Plate Pulsating Heat Pipe
,”
J. Thermophys. Heat Transfer
,
21
(
2
), pp.
405
409
.
6.
Thompson
,
S. M.
,
Ma
,
H. B.
,
Winholtz
,
R. A.
, and
Wilson
,
C.
, 2009, “
Experimental Investigation of a Miniature Three-Dimensional Flat-Plate Oscillating Heat Pipe
,”
ASME J. Heat Transfer
,
131
(
4
), p.
043210
.
7.
Thompson
,
S. M.
, and
Ma
,
H. B.
, 2010, “
Effect of Localized Heating Three Dimensional Flat-Plate Oscillating Heat Pipe
,”
Adv. Mech. Eng.
,
2010
, p.
465153
.
8.
Zhang
,
X. M.
,
Xu
,
J. L.
, and
Zhou
,
Z. Q.
, 2004, “
Experimental Study of a Pulsating Heat Pipe Using FC-72, Ethanol, and Water as Working Fluids
,”
Exp. Heat Transfer
,
17
, pp.
47
67
.
9.
Kim
,
J. H.
,
Lee
,
W. H.
,
Jung
,
H. S.
, and
Kim
,
J. S.
, 2000, “
Characteristics of Pressure Oscillation in Self-Excited Oscillating Heat Pipe Based on Experimental Study
,”
Sixth International Heat Pipe Symposium
,
Chiang Mai
,
Thailand
, pp.
263
272
10.
Lin
,
L.
,
Ponnappan
,
R.
, and
Leland
,
J.
, 2001, “
Experimental Investigation of Oscillating Heat Pipes
,”
J. Thermophys. Heat Transfer
,
15
(
4
), pp.
395
400
.
11.
Qu
,
W.
, and
Ma
,
H. B.
, 2007, “
Theoretical Analysis of Start-Up of a Pulsating Heat Pipe
,”
Int. J. Heat Mass Transfer
,
50
, pp.
2309
2316
.
12.
Zhang
,
Y.
, and
Faghri
,
A.
, 2008, “
Advances and Unsolved Issues in Pulsating Heat Pipes
,”
Heat Transfer Engineering
,
29
(
1
), pp.
20
44
.
You do not currently have access to this content.