Supercritical startup of cryogenic loop heat pipes (CLHPs) has been investigated both analytically and experimentally. Mathematical model of the supercritical startup has been established using the nodal network method, and parametric study is conducted where the effects of working fluid charged pressure, parasitic heat load from the ambient, etc., on the supercritical startup characteristics are incorporated and evaluated. The result improves understanding of the effects of these parameters on supercritical startup and identification of those conditions under which supercritical startup can and will occur. In addition, the modeling effort has led to an enhanced understanding of supercritical startup performance.

References

References
1.
Ku
,
J.
, 1999, “
Operating Characteristics of Loop Heat Pipes
,” SAE Paper No. 1999-01-2007.
2.
Maydanik
,
Y. F.
, 2005, “
Loop Heat Pipes
,”
Appl. Therm. Eng.
,
25
, pp.
635
657
.
3.
Li
,
J.
,
Wang
,
D.
, and
Peterson
,
G. P.
, 2010, “
Experimental Studies on a High Performance Compact Loop Heat Pipe With a Square Flat Evaporator
,”
Appl. Therm. Eng.
,
30
, pp.
741
752
.
4.
Kim
,
B. H.
, and
Peterson
,
G. P.
, 2005, “
An Experimental Study on the Operating Characteristics and Performance Measurement of a Reversible Loop Heat Pipe
,”
AIAA J. Thermophys. Heat Transfer
,
19
, pp.
5119
526
.
5.
Bai
,
L.
,
Lin
,
G.
,
Wen
,
D.
, and
Feng
,
J.
, 2009, “
Experimental Investigation of Startup Behaviors of a Dual Compensation Chamber Loop Heat Pipe With Insufficient Fluid Inventory
,”
Appl. Therm. Eng.
,
29
, pp.
1447
1456
.
6.
Pastukhov
,
V. G.
, and
Maydanik
,
Y. F.
, 2009, “
Active Coolers Based on Copper–Water LHPs for Desktop PC
,”
Appl. Therm. Eng.
,
29
, pp.
3140
3143
.
7.
Hoang
,
T. T.
, and
O’Connell
,
T. A.
, 2005, “
Performance Demonstration of Flexible Advanced Loop Heat Pipe for Across-Gimbal Cryocooling
,” AIAA Paper No. 2005-5590.
8.
James
,
Y.
,
Kroliczek
,
E.
, and
Crawford
,
L.
, 2002, “
Development of a Cryogenic Loop Heat Pipe (CLHP) for Passive Optical Bench Cooling Applications
,” SAE Paper No. 2002-01-2507.
9.
Hoang
,
T. T.
,
O’Connell
,
T. A.
,
Ku
,
J.
,
Butler
,
C. D.
,
Swanson
,
T. D.
, and
Khrustalev
,
D. K.
, 2003, “
Design Optimization of a Hydrogen Advanced Loop Heat Pipe for Space-Based IR Sensor and Detector Cryocooling
,”
Proc. SPIE
5172
,
86
96
.
10.
Hoang
,
T. T.
,
O’Connell
,
T. A.
,
Ku
,
J.
,
Butler
,
C. D.
, and
Swanson
,
T. D.
, 2005, “
Performance Demonstration of a Hydrogen Advanced Loop Heat Pipe for 20–30K Cryocooling of Far Infrared Sensors
,”
Proc. SPIE
5904
, pp.
1
10
.
11.
Mo
,
Q.
, and
Liang
,
J.
, 2006, “
A Novel Design and Experimental Study of a Cryogenic Loop Heat Pipe With High Heat Transfer Capability
,”
Int. J. Heat Mass Transfer
,
49
, pp.
770
776
.
12.
Mo
,
Q.
,
Liang
,
J.
, and
Cai
,
J.
, 2007, “
Investigation of the Effects of Three Key Parameters on the Heat Transfer Capability of a CLHP
,”
Cryogenics
,
47
, pp.
262
266
.
13.
Bai
,
L.
,
Lin
,
G.
, and
Wen
,
D.
, 2010, “
Parametric Analysis of Steady-State Operation of a CLHP
,”
Appl. Therm. Eng.
,
30
, pp.
850
858
.
14.
Bai
,
L.
,
Lin
,
G.
, and
Wen
,
D.
, 2010, “
Modeling and Analysis of Startup of a Loop Heat Pipe
,”
Appl. Therm. Eng.
,
30
, pp.
2778
2787
.
You do not currently have access to this content.