A trend towards increasingly dense and compact architectures has led to unmanageably high heat fluxes in electronic components. Pulsating heat pipes made out of multi port extrusion tubing are a proposed solution. In this study four pulsating heat pipes were fabricated with unique combinations of geometric parameters. The fabricated heat pipes were tested with a range of fill ratios using two different working fluids. Performance at varying heat input, and orientation was measured. Experimental results of testing found that the channel geometry, presence of a loop, working fluid properties, fill ratio and heat input were interrelated in influencing the effectiveness of the heat pipe. The low material cost, inherently low maintenance, low thermal resistance, and ability to tailor the properties of a heat pipe to the needs of a given application have led to the conclusion that the pulsating heat pipe would be an effective assistant in electronics cooling.
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