TY - JOUR
T1 - Two-phase flow pattern based theoretical study of loop heat pipes
AU - Weng, Chih Yuan
AU - Leu, Tzong Shyng
N1 - Funding Information:
This research received funding from the Headquarters of University Advancement at National Cheng Kung University, which is sponsored by the Ministry of Education, Taiwan and Ministry of Science and Technology under the grants NSC 102-2221-E-006-091-MY3 .
Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2016/4/5
Y1 - 2016/4/5
N2 - Loop heat pipes (LHPs) are passive heat transport devices using capillary structures to circulate the working fluid. In this study, several theoretical models based on conservation equations in the system are used to evaluate the characteristics of LHPs. In addition, while computing the characteristics of two-phase flow within LHP, the progression of the flow regimes in the condensing tube is specially considered by adopting proper two-phase flow pattern map. In this study, the comparison between the experimental and theoretical results of new proposed model achieves the smallest mean absolute percentage error (MAPE) of 2.00% in the fixed conductance modes among all existing models. It has been shown that the characteristics of LHP can be better predicted by using new proposed model with consideration of the surface-tension influence on two-phase flow pattern map within condensation tube diameter ranging from 1 mm to 5 mm.
AB - Loop heat pipes (LHPs) are passive heat transport devices using capillary structures to circulate the working fluid. In this study, several theoretical models based on conservation equations in the system are used to evaluate the characteristics of LHPs. In addition, while computing the characteristics of two-phase flow within LHP, the progression of the flow regimes in the condensing tube is specially considered by adopting proper two-phase flow pattern map. In this study, the comparison between the experimental and theoretical results of new proposed model achieves the smallest mean absolute percentage error (MAPE) of 2.00% in the fixed conductance modes among all existing models. It has been shown that the characteristics of LHP can be better predicted by using new proposed model with consideration of the surface-tension influence on two-phase flow pattern map within condensation tube diameter ranging from 1 mm to 5 mm.
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U2 - 10.1016/j.applthermaleng.2015.11.124
DO - 10.1016/j.applthermaleng.2015.11.124
M3 - Article
AN - SCOPUS:84953911217
SN - 1359-4311
VL - 98
SP - 228
EP - 237
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
ER -