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Heat Pipe Science and Technology, An International Journal

Publicou 4 edições por ano

ISSN Imprimir: 2151-7975

ISSN On-line: 2151-7991

THERMAL MANAGEMENT USING COPPER-METHANOL HEAT PIPES FOR RADIO TRANSMITTER SYSTEMS

Volume 8, Edição 1, 2017, pp. 69-85
DOI: 10.1615/HeatPipeScieTech.2017021361
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RESUMO

As well known passive thermal control devices, heat pipes, have been used to transport generated heat from a source to a sink with little temperature differences and high efficiency. Constant development in the field has been achieved over the years and applied in several areas, especially in aerospace and military, with potential applications for cooling industry and laptop computers. There are several other applications of heat pipes. They can have many different shapes, however, a great deal of development is necessary for a given thermal design especially when high heat density is generated by a source. In applications where a high density of electronics is present, high levels of heat are generated that need to be properly managed in order to maintain their operation temperatures according to the project's requirements. For the current investigation, heat pipes have been developed as important components for thermal management of electronics on printed circuit boards (PCBs) applied in defense/surveillance equipment. The obtained results from the development process indicate that heat pipes can present a lifetime of 13.5 years, keeping the cold junction temperatures of the electronic components below 80°C. Thermal tests performed in an environmental chamber showed reliable operation of heat pipes with thermal conductances close to 10 W/°C.

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