Secondary wick operation principle and performance mapping in LHP and FLHP evaporators

Parametric analysis of loop heat pipe operation: a literature review

“…According to Van Oost et al [34], the evaporator/compensation chamber design plays a fundamental role on the LHP performance. The compensation chamber and the evaporator have to be thermally disconnected and their hydraulic coupling could be ensured via a secondary wick or a bayonet.…”

“…Both liquid and vapour lines are made of small-diameter tubing that can easily be arranged in tight spaces around the electronic devices. A portion of the liquid line (called bayonet) usually first exchanges heat with the reservoir, before it feeds the liquid returning to the capillary pump [34].…”

A review of small heat pipes for electronics

“…Moreover, the liquid/gas channels that penetrate the wicks under local hot spot are becoming smaller and smaller with better cooling performance. The operation of an LHP is based on the same physical processes as those of conventional HPs [51,52,[56][57][58]. The LHP consists of a capillary pump (also called an evaporator), a CC (also called a reservoir), a condenser, and vapour and liquid transport lines ( Figure 7).…”

Transient Mathematical Modelling of Loop Heat Pipes and Experimental Validation

“…For instance, a bayonet tube is introduced to directly supply the subcooled liquid from the liquid line to the evaporator core. The LHP design with bayonet influences both the steady-state and transient operation of the LHP [6].…”

“…Therefore, running the correlation script can take up a significant portion of the processing time. For instance, the correlation script should be run roughly 9x10 6 times to simulate the transient behavior of an LHP with 30 control volumes for 30,000 seconds. The evaluation of the computational time is conducted by running the MATLAB scripts of the correlations for the continuity scenario with 1000 data points as shown in Table 10, using a computer with Intel Core i7-3770 CPU and 16 GB of RAM.…”