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Fabrication of a Cost-Effective Bi-porous Composite Wick for Loop Heat Pipes

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Low Cost Manufacturing Technologies (NERC 2022)

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Abstract

In the present work, a bi-porous composite wick made of aluminium and copper powder was fabricated using cold-press sintering. Polyvinyl alcohol was used as a binder; it also works as a pore-forming agent during sintering. The compaction of powder was carried out at 150 KN force for about 15 min, using a reusable die and punch in universal testing machine. The compacted sample is then sintered at 400 ℃ for about 90 min. The fabricated composite wick has the advantage of both lower and higher thermal conductive material which helps in reducing heat leak and improving the evaporation rate. The wick was found to have a porosity of 42% (calculated using the density method) and a hardness of 35.6 HRB. The average pore diameter of the sintered wick is found to be 378 nm.

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Abbreviations

LHP:

Loop heat pipe

UTM:

Universal testing machine

HRB:

Hardness Rockwell B

CC:

Compensation chamber

m d :

Dry weight of wick

m a :

Saturated weight of wick in the air

m w :

Saturated weight of wick in the water

V w :

Volume of sintered wick

ε :

Porosity of wick

K :

Permeability of wick

ρ m :

Density of material

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Acknowledgements

The characterization experiments were conducted at the Central Instruments Facility of IIT Guwahati.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India

    Toni Kumari, Chandan Nashine & Manmohan Pandey

Authors
  1. Toni Kumari
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  2. Chandan Nashine
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  3. Manmohan Pandey
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Corresponding author

Correspondence to Toni Kumari .

Editor information

Editors and Affiliations

  1. Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India

    Shrikrishna Nandkishor Joshi

  2. Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India

    Uday Shanker Dixit

  3. Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Guwahati, Assam, India

    R. K. Mittal

  4. Mechanical Engineering Department, Indian Institute of Technology Guwahati, Guwahati, Assam, India

    Swarup Bag

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Kumari, T., Nashine, C., Pandey, M. (2023). Fabrication of a Cost-Effective Bi-porous Composite Wick for Loop Heat Pipes. In: Joshi, S.N., Dixit, U.S., Mittal, R.K., Bag, S. (eds) Low Cost Manufacturing Technologies. NERC 2022. Springer, Singapore. https://doi.org/10.1007/978-981-19-8452-5_9

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  • DOI: https://doi.org/10.1007/978-981-19-8452-5_9

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-19-8451-8

  • Online ISBN: 978-981-19-8452-5

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