Abstract

Porous wicks are a key component of loop heat pipes (LHPs). In order to enhance the antigravity and long-distance operation ability of the LHP, a porous wick is required to have the characteristics of high permeability and high capillary suction capability. In this paper, biporous wicks were prepared by salt dissolution pore-forming technology, and a gas resistance testing platform and a capillary suction testing platform were setup to test the samples. The current research studies the effects of different pore-forming agent mass ratios (10%, 30%, and 40%) and different cold pressing pressures (30 kN, 40 kN, 50 kN, and 60 kN) on the porosity, permeability, and the suction speed. The study finds that the porosity, permeability, and the total suction mass of the porous wicks all increase when the NaCl mass increases; the increase of the suction speed is proportional to the increase of the porosity and the permeability, and hence, proportional to the increase of NaCl mass. The total suction mass and suction speed is inversely proportional to cold pressing pressure.

References

1.
Wolf
,
D. A.
,
Ernst
,
D. M.
, and
Phillips
,
A. L.
, “
Loop Heat Pipes—Their Performance and Potential
,”
SAE
Paper No. 941575.10.4271/941575
2.
Siedel
,
B.
,
Sartre
,
V.
, and
Lefèvre
,
F.
,
2015
, “
Literature Review: Steady-State Modeling of Loop Heat Pipes
,”
Appl. Therm. Eng.
,
75
, pp.
709
723
.10.1016/j.applthermaleng.2014.10.030
3.
Riehl
,
R. R.
, and
Santos
,
N.
,
2008
, “
Loop Heat Pipe Performance Enhancement Using Primary Wick With Circumferential Grooves
,”
Appl. Therm. Eng.
,
28
(
14–15
), pp.
1745
1755
.10.1016/j.applthermaleng.2007.11.005
4.
Yu
,
J.
,
Chen
,
H.
,
Zhao
,
H.
, and
Li
,
Y.
,
2007
, “
An Experimental Investigation on Capillary Pumped Loop With the Meshes Wick
,”
Int. J. Heat Mass Transfer
,
50
(
21–22
), pp.
4503
4507
.10.1016/j.ijheatmasstransfer.2007.02.038
5.
Berti
,
L. F.
,
Santos
,
P. H. D.
,
Bazzo
,
E.
,
Janssen
,
R.
,
Hotza
,
D.
, and
Rambo
,
C. R.
,
2011
, “
Evaluation of Permeability of Ceramic Wick Structures for Two Phase Heat Transfer Devices
,”
Appl. Therm. Eng.
,
31
(
6–7
), pp.
1076
1081
.10.1016/j.applthermaleng.2010.12.001
6.
Ling
,
W. S.
,
Zhou
,
W.
,
Liu
,
R. L.
,
Qiu
,
Q. F.
, and
Liu
,
J.
,
2016
, “
Thermal Performance of Loop Heat Pipe With Porous Copper Fiber Sintered Sheet as Wick Structure
,”
Appl. Therm. Eng.
,
108
, pp.
251
260
.10.1016/j.applthermaleng.2016.07.121
7.
Xin
,
G.
,
Zhang
,
P.
,
Chen
,
Y.
,
Cheng
,
L.
,
Huang
,
T.
, and
Yin
,
H.
,
2018
, “
Development of Composite Wicks Having Different Thermal Conductivities for Loop Heat Pipes
,”
Appl. Therm. Eng.
,
136
, pp.
229
236
.10.1016/j.applthermaleng.2018.03.005
8.
Mishra
,
D. K.
,
Saravanan
,
T. T.
,
Khanra
,
G. P.
,
Girikumar
,
S.
,
Sharma
,
S. C.
,
Sreekumar
,
K.
, and
Sinha
,
P. P.
,
2010
, “
Studies on the Processing of Nickel Base Porous Wicks for Capillary Pumped Loop for Thermal Management of Spacecrafts
,”
Adv. Powder Technol.
,
21
(
6
), p.
658
.10.1016/j.apt.2010.07.011
9.
Deng
,
D.
,
Liang
,
D.
,
Tang
,
Y.
,
Peng
,
J.
,
Han
,
X.
, and
Pan
,
M.
,
2013
, “
Evaluation of Capillary Performance of Sintered Porous Wicks for Loop Heat Pipe
,”
Exp. Therm. Fluid Sci.
,
50
(
10
), pp.
1
9
.10.1016/j.expthermflusci.2013.04.014
10.
Feng
,
C.
,
Yugeswaran
,
S.
, and
Chandra
,
S.
,
2018
, “
Capillary Rise of Liquids in Thermally Sprayed Porous Copper Wicks
,”
Exp. Therm. Fluid Sci.
,
98
, pp.
206
216
.10.1016/j.expthermflusci.2018.05.031
11.
Wu
,
S.-C.
,
Wang
,
D.
, and
Chen
,
Y.-M.
,
2014
, “
Investigating the Effect of Double-Layer Wick Thickness Ratio on Heat Transfer Performance of Loop Heat Pipe
,”
Int. J. Therm. Sci.
,
86
, pp.
292
298
.10.1016/j.ijthermalsci.2014.07.014
12.
Santos
,
P. H. D.
,
Bazzo
,
E.
,
Becker
,
S.
,
Kulenovic
,
R.
, and
Mertz
,
R.
,
2010
, “
Development of LHPs With Ceramic Wick
,”
Appl. Therm. Eng.
,
30
(
13
), pp.
1784
1789
.10.1016/j.applthermaleng.2010.04.010
13.
T.
,
Semenic
,
Y. Y.
, and
Lin
,
I.
,
2008
, “
CattonThermophysical Properties of Biporous Heat Pipe Evaporators
,”
ASME J. Heat Transfer
,
130
, p.
022602
.10.1115/1.2790020
14.
Singh
,
R.
,
Akbarzadeh
,
A.
, and
Mochizuki
,
M.
,
2009
, “
Experimental Determination of Wick Properties for Loop Heat Pipe Applications
,”
J. Por. Media
,
12
(
8
), pp.
759
776
.10.1615/JPorMedia.v12.i8.30
15.
Dominguez Espinosa
,
F. A.
,
Peters
,
T. B.
, and
Brisson
,
J. G.
,
2012
, “
Effect of Fabrication Parameters on the Thermophysical Properties of Sintered Wicks for Heat Pipe Applications
,”
Int. J. Heat Mass Transfer
,
55
(
25–26
), pp.
7471
7486
.10.1016/j.ijheatmasstransfer.2012.07.037
16.
Gibson
,
L. J.
, and
Ashby
,
M. F.
,
1997
,
Cellular Solids: Structure and Properties
, 2nd ed.,
Cambridge University Press
,
Cambridge, UK
.
17.
Li
,
H.
,
Liu
,
Z.
,
Chen
,
B.
,
Liu
,
W.
,
Li
,
C.
, and
Yang
,
J.
,
2012
, “
Development of Biporous Wicks for Flat-Plate Loop Heat Pipe
,”
Exp. Therm. Fluid Sci.
,
37
, pp.
91
97
.10.1016/j.expthermflusci.2011.10.007
18.
Xu
,
J.
,
Zou
,
Y.
,
Fan
,
M.
, and
Cheng
,
L.
,
2012
, “
Effect of Pore Parameters on Thermal Conductivity of Sintered LHP Wicks
,”
Int. J. Heat Mass Transfer
,
55
(
9–10
), pp.
2702
2706
.10.1016/j.ijheatmasstransfer.2012.01.028
19.
Qu
,
Y.
,
Zhou a
,
K.
,
Zhang
,
K. F.
, and
Tian
,
Y.
,
2016
, “
Effects of Multiple Sintering Parameters on the Thermal Performance of Bi-Porous Nickel Wicks in Loop Heat Pipes
,”
Int. J. Heat Mass Transfer
,
99
, pp.
638
646
.10.1016/j.ijheatmasstransfer.2016.04.005
20.
Byon
,
C.
, and
Kim
,
S. J.
,
2012
, “
Capillary Performance of bi-Porous Sintered Metal Wicks
,”
Int. J. Heat Mass Transfer
,
55
(
15–16
), pp.
4096
4103
.10.1016/j.ijheatmasstransfer.2012.03.051
21.
Giorgio
,
P.
, and
Ludovica
,
C.
,
2015
, “
Porous Ceramic Materials by Pore-Forming Agent Method: An Intermingled Fractal Units Analysis and Procedure to Predict Thermal Conductivity
,”
Ceram. Int.
,
41
(
5
), pp.
6350
6357
.10.1016/j.ceramint.2015.01.069
22.
Khattab
,
M.
,
Wahsh
,
M.
, and
Khalil
,
N. M.
,
2012
, “
Preparation and Characterization of Porous Alumina Ceramics Through Starch Consolidation Casting Technique
,”
Ceram. Int.
,
38
(
6
), pp.
4723
4728
.10.1016/j.ceramint.2012.02.057
23.
Li
,
J.
,
Zou
,
Y.
, and
Cheng
,
L.
,
2010
, “
Experimental Study on Capillary Pumping Performance of Porous Wicks for Loop Heat Pipe
,”
Exp. Therm. Fluid Sci.
,
34
(
8
), pp.
1403
1408
.10.1016/j.expthermflusci.2010.06.016
24.
Kousalya
,
A. S.
,
Weibel
,
J. A.
,
Garimella
,
S. V.
, and
Fisher
,
T. S.
,
2013
, “
Metal Functionalization of Carbon Nanotubes for Enhanced Sintered Powder Wicks
,”
Int. J. Heat Mass Transfer.
,
59
(
1
), pp.
372
383
.10.1016/j.ijheatmasstransfer.2012.12.030
25.
Wolf
,
D.
,
Yun
,
J.
, and
Kroliczek
,
E.
,
1999
, “
Parallel Loop Heat Pipe Design and Test Results
,”
SAE
Paper No. 1999-01-2052.'10.4271/1999-01-2052
26.
Hernysheva
,
M.
,
Vershinin
,
S.
, and
Maydanik
,
Y.
,
2007
, “
Operating Temperature and Distribution of a Working Fluid in LHP
,”
Heat Mass Transfer
,
50
(
13–14
), pp.
2704
2713
.10.1016/j.ijheatmasstransfer.2006.11.020
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