RT Journal Article
ID 15472b874a30eaa6
A1 Wei, Lingjiao
A1 Yuan, Dazhong
A1 Guo, Chaohong 
A1 Tang, Dawei
T1 INFLUENCE OF VAPOR BUBBLES ON THE THERMAL PERFORMANCE OF A TWO-PHASE CLOSED THERMOSYPHON LOOP WITH A LIQUID HEAT TRANSFER AGENT
JF Heat Transfer Research
JO HTR
YR 2016
FD 2016-10-03
VO 47
IS 12
SP 1109
OP 1120
K1 closed thermosyphon loop
K1 vapor bubbles
K1 heat transfer agent
AB In this paper, an experimental investigation on the thermal performance of a two-phase closed thermosyphon loop with
a liquid heat transfer agent (TPCTLL) is considered for the first time. TPCTLLs have shown interesting heat transfer
characteristics, though it has not attracted very much attention from researchers. In this work, repetitive experiments were conducted on the designed closed thermosyphon loop with a filling ratio of 95% and with the focus on the heat transfer performance along with increasing heat input. The experimental results of the TPCTLL reveal three types of heat transfer phenomena, including natural convection around the heating section at low heating power, quasisteady-state flow with periodic fluctuations at a medium heating power, and stable flow with consecutively generated vapor bubbles at a high heating power. In addition, an experiment on the thermal performance of a SPCTL is conducted for comparison purposes.
The analysis indicates that the stable and outstanding operation of the TPCTLL appears at high input heat which exceeds the heat transfer limitation of the SPCTL with the same structure and working fluid, and the heat transfer coefficient of the TPCTLL becomes higher than that of the SPCTL.

PB Begell House
LK https://www.dl.begellhouse.com/journals/46784ef93dddff27,1c028f237ecc65ba,15472b874a30eaa6.html