Heat transfer enhancement in acetone filled flat micro heat pipes for CMOS sensor cooling

Ioan Mihai; Silviu Sprinceana; Cornel Suciu

doi:10.1117/12.2323406

31 December 2018 Heat transfer enhancement in acetone filled flat micro heat pipes for CMOS sensor cooling

Ioan Mihai, Silviu Sprinceana, Cornel Suciu

Proceedings Volume 10977, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IX; 109771T (2018) https://doi.org/10.1117/12.2323406
Event: Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies IX, 2018, Constanta, Romania

Abstract

At present, many of the cooling systems for optoelectronic components employ flat micro heat pipes (FMHPs) that use acetone, methanol and distilled water as working fluids. The present paper illustrates research conducted regarding the behavior of FMHPs with acetone when heat transfer intensification methods are employed with the purpose of increasing cooling efficiency. Investigations aimed to obtain a cooling intensification in FMHP’s vaporization area by means of two methods. The first method consists of using a moistened polysynthetic material, pressed by a shape memory lamella when the FMHP overheats. The second method consists of direct injection of a coolant in the vaporization area. Temperature variation was computed in the vaporizer wall after adding the coolant fluid. Also, the temperature variation is modeled numerically by aid of Mathcad with acetone considered as the working fluid. In order to verify the analytical and numerical results, experimental investigations were also conducted. Experimental results illustrate the temperature evolution in time within the vaporization and condensation areas when extra fluid is added, in the case of acetone as coolant agent. The present work illustrates the behavior particularities of a FMHP working with acetone when the extrafluid is used for cooling of the vaporization area.

Citation Download Citation

Ioan Mihai, Silviu Sprinceana, and Cornel Suciu "Heat transfer enhancement in acetone filled flat micro heat pipes for CMOS sensor cooling", Proc. SPIE 10977, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IX, 109771T (31 December 2018); https://doi.org/10.1117/12.2323406

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