A wicked heat pipe fabricated using metal additive manufacturing

Additive Manufacturing (AM) has emerged as a high-potential manufacturing technology for fabricating all-in-one heat exchange devices that incorporate embedded two-phase heat transport and spreading systems. A key enabler of this technology is the capacity for AM to fabricate porous wick structures....

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	A.J. Robinson, J. Colenbrander, T. Deaville, J. Durfee, R. Kempers
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Heat pipe Additive manufacturing Porous wicks Capillary structure Heat QC251-338.5
Acceso en línea:	https://doaj.org/article/ed1c6bb07ee1474d80b00abb50ae0954
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:ed1c6bb07ee1474d80b00abb50ae0954
record_format	dspace
spelling	oai:doaj.org-article:ed1c6bb07ee1474d80b00abb50ae09542021-11-28T04:38:28ZA wicked heat pipe fabricated using metal additive manufacturing2666-202710.1016/j.ijft.2021.100117https://doaj.org/article/ed1c6bb07ee1474d80b00abb50ae09542021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666202721000550https://doaj.org/toc/2666-2027Additive Manufacturing (AM) has emerged as a high-potential manufacturing technology for fabricating all-in-one heat exchange devices that incorporate embedded two-phase heat transport and spreading systems. A key enabler of this technology is the capacity for AM to fabricate porous wick structures. To this end, this work experimentally investigates a simple AM-fabricated aluminum structure with an inner cavity. Within the cavity, a single-sided wick heat pipe is fabricated, again by aluminum AM. To facilitate capillary wicking within the embedded heat pipe, while being amenable to the direct metal laser sintering (DMLS) AM process, a novel cross-hatched porous wick structure is introduced. The wicks were fabricated by printing layered rows of fine wire-like features at different angles to one another in successive layers, creating a porous 3D structure. The resulting 3D wick structure was varied by controlling the hatch distance between neighboring printed wires in each layer, resulting in different wick properties. In this investigation, the capillary performance of three wicks were interrogated using the Rate of Rise technique, which also facilitated estimation of important wick properties such as permeability and effective pore radius. By varying the hatch distance between 0.6 mm and 1.0 mm, the permeability ranged between 35.6 and 39.6μm2 with a corresponding range of 127–88 μm for the effective pore radius and 43–59% for the porosity. The efficacy of the proposed metal AM heat pipe concept was then verified by enclosing the wicks within a lid casing, creating two-part flat heat pipes, and experimentally characterizing them with acetone used as the working fluid. This study includes performance indicators such as overall thermal resistance, effective wick thermal conductivity, and effective thermal conductivity of the heat pipe cavity region.A.J. RobinsonJ. ColenbranderT. DeavilleJ. DurfeeR. KempersElsevierarticleHeat pipeAdditive manufacturingPorous wicksCapillary structureHeatQC251-338.5ENInternational Journal of Thermofluids, Vol 12, Iss , Pp 100117- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Heat pipe Additive manufacturing Porous wicks Capillary structure Heat QC251-338.5
spellingShingle	Heat pipe Additive manufacturing Porous wicks Capillary structure Heat QC251-338.5 A.J. Robinson J. Colenbrander T. Deaville J. Durfee R. Kempers A wicked heat pipe fabricated using metal additive manufacturing
description	Additive Manufacturing (AM) has emerged as a high-potential manufacturing technology for fabricating all-in-one heat exchange devices that incorporate embedded two-phase heat transport and spreading systems. A key enabler of this technology is the capacity for AM to fabricate porous wick structures. To this end, this work experimentally investigates a simple AM-fabricated aluminum structure with an inner cavity. Within the cavity, a single-sided wick heat pipe is fabricated, again by aluminum AM. To facilitate capillary wicking within the embedded heat pipe, while being amenable to the direct metal laser sintering (DMLS) AM process, a novel cross-hatched porous wick structure is introduced. The wicks were fabricated by printing layered rows of fine wire-like features at different angles to one another in successive layers, creating a porous 3D structure. The resulting 3D wick structure was varied by controlling the hatch distance between neighboring printed wires in each layer, resulting in different wick properties. In this investigation, the capillary performance of three wicks were interrogated using the Rate of Rise technique, which also facilitated estimation of important wick properties such as permeability and effective pore radius. By varying the hatch distance between 0.6 mm and 1.0 mm, the permeability ranged between 35.6 and 39.6μm2 with a corresponding range of 127–88 μm for the effective pore radius and 43–59% for the porosity. The efficacy of the proposed metal AM heat pipe concept was then verified by enclosing the wicks within a lid casing, creating two-part flat heat pipes, and experimentally characterizing them with acetone used as the working fluid. This study includes performance indicators such as overall thermal resistance, effective wick thermal conductivity, and effective thermal conductivity of the heat pipe cavity region.
format	article
author	A.J. Robinson J. Colenbrander T. Deaville J. Durfee R. Kempers
author_facet	A.J. Robinson J. Colenbrander T. Deaville J. Durfee R. Kempers
author_sort	A.J. Robinson
title	A wicked heat pipe fabricated using metal additive manufacturing
title_short	A wicked heat pipe fabricated using metal additive manufacturing
title_full	A wicked heat pipe fabricated using metal additive manufacturing
title_fullStr	A wicked heat pipe fabricated using metal additive manufacturing
title_full_unstemmed	A wicked heat pipe fabricated using metal additive manufacturing
title_sort	wicked heat pipe fabricated using metal additive manufacturing
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/ed1c6bb07ee1474d80b00abb50ae0954
work_keys_str_mv	AT ajrobinson awickedheatpipefabricatedusingmetaladditivemanufacturing AT jcolenbrander awickedheatpipefabricatedusingmetaladditivemanufacturing AT tdeaville awickedheatpipefabricatedusingmetaladditivemanufacturing AT jdurfee awickedheatpipefabricatedusingmetaladditivemanufacturing AT rkempers awickedheatpipefabricatedusingmetaladditivemanufacturing AT ajrobinson wickedheatpipefabricatedusingmetaladditivemanufacturing AT jcolenbrander wickedheatpipefabricatedusingmetaladditivemanufacturing AT tdeaville wickedheatpipefabricatedusingmetaladditivemanufacturing AT jdurfee wickedheatpipefabricatedusingmetaladditivemanufacturing AT rkempers wickedheatpipefabricatedusingmetaladditivemanufacturing
_version_	1718408293899042816

A wicked heat pipe fabricated using metal additive manufacturing

Ejemplares similares