Roll-bond Condenser In A Two-phase
Thermosyphon Loop For Power Electronics
Cooling
Author(s)
F. Agostini & T. Gradinger
Abstract
In this paper a thermosyphon design for power electronics cooling is presented and
supported by an extensive experimental campaign. The work tackles the problem
of finding a suitable substitute of common air cooled heat sinks towards a highly
thermally performing device overcoming the bottleneck of limited fin efficiency
and proposing a device with reduced air pressure drop. The basic thermal circuit is
based on a two-phase thermosyphon system. The evaporator channels are such that
the so-called bubble-pumping effect is present, facilitating the natural movement
of the fluid in the device. The degree of novelty is introduced by the usage of
a condenser made of roll-bonded panels. A common double-sided evaporator
body collects the heat generated by two power modules. The employed fluid is
refrigerant R245fa. The paper presents the thermal performance of the described
two-phase cooler in a forced convection regime (air side). The experimental
campaign covers total power losses ranging from 1 to 4 kW and different air mass
flow rates. The paper presents and demonstrates an attractive cooling solution for
power electronics modules based on a two-phase cooler.
Keywords: electronics, cooling, thermosyphon, two-phase, condenser, forced
convection, roll-bond.
1 Introduction
Research toward efficient cooling systems of power electronics devices represent
a challenge and an important target in many electronic applications. In this
direction pumpless two-phase cooling devices, so-called thermosyphons, represent
an important benefit for the thermal management.
Keywords
electronics, cooling, thermosyphon, two-phase, condenser, forced
convection, roll-bond.
Related Book
Other papers in this volume
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