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Advanced Engineering for Processes and Technologies pp 307–319Cite as

Thermal Analysis of a Cylindrical Sintered Wick Heat Pipe

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Part of the book series: Advanced Structured Materials ((STRUCTMAT,volume 102))

Abstract

The aim of this paper is to present approaches undertaken in analysing the thermal performance of a cylindrical heat pipe with copper-sintered wick. The approaches employed are the thermal resistance network, the lumped capacitance method (LCM) and two-dimensional numerical CFD simulation. The predicted variation of the evaporator temperature with different heat inputs were compared against experimental data. The accuracy of the prediction was also determined by finding the percentage difference of the calculated results with that from the experiments. All methods have shown to produce results that are in good agreement with the experimental works. The best method is the LCM, giving predictions that deviate from experimental data by as much as 3.9%, followed by the thermal resistance network and the numerical simulation with maximum percentage differences of 4.6 and 9.8%, respectively.

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Abbreviations

δ :

Thickness (m)

\(\dot{Q}\) :

Heat input (W)

ε :

Wick porosity (fraction)

Nu :

Nusselt number

μ :

Dynamic viscosity (kg/m s)

ρ :

Density (kg/m3)

C :

Thermal capacity (J/K)

cp :

Specific heat capacity (J/kg K)

d :

Diameter of the heat pipe (m)

h :

Convection heat transfer coefficient (W/m2 K)

k :

Thermal conductivity of material (W/m K)

L :

Length of the section (m)

Pr :

The Prandtl number

R :

Thermal resistance (W/K)

r :

Radius of the heat pipe (m)

Re :

The Reynold number

T :

Temperature (K)

t :

Time (s)

τ :

Time constant (s)

∞:

Ambient condition

conv :

Convection at the condenser

eff :

Effective

a :

Adiabatic section

c :

Condenser section

e :

Evaporator section

i :

Inner of the heat pipe

l :

Liquid in the wick

o :

Outer of the heat pipe

p :

Heat pipe wall

w :

Wick

p, c:

Pipe wall at the condenser

p, e:

Pipe wall at the evaporator

tot :

Overall

w, c:

Liquid-wick combination at the condenser

w, e:

Liquid-wick combination at the evaporator

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Author information

Authors and Affiliations

  1. Malaysian Spanish Institute, Universiti Kuala Lumpur, Kulim Hi-Tech Park, 09000, Kedah, Malaysia

    Faiza Mohamed Nasir

  2. Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Pulau Pinang, Malaysia

    Faiza Mohamed Nasir & Mohd. Zulkifly Abdullah

  3. Universiti Teknologi MARA, Kampus Permatang Pauh, Jalan Permatang Pauh, 13500, Permatang Pauh, Pulau Pinang, Malaysia

    Fairosidi Idrus

Authors
  1. Faiza Mohamed Nasir
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  2. Mohd. Zulkifly Abdullah
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  3. Fairosidi Idrus
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Correspondence to Faiza Mohamed Nasir .

Editor information

Editors and Affiliations

  1. Malaysian Institute of Marine Engineering Technology, Universiti Kuala Lumpur, Lumut, Perak, Malaysia

    Azman Ismail

  2. Malaysian Spanish Institute, Universiti Kuala Lumpur, Kulim, Kedah, Malaysia

    Muhamad Husaini Abu Bakar

  3. Faculty of Mechanical Engineering, Esslingen University of Applied Sciences, Esslingen am Neckar, Baden-Württemberg, Germany

    Andreas Öchsner

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Nasir, F.M., Abdullah, M.Z., Idrus, F. (2019). Thermal Analysis of a Cylindrical Sintered Wick Heat Pipe. In: Ismail, A., Abu Bakar, M., Öchsner, A. (eds) Advanced Engineering for Processes and Technologies. Advanced Structured Materials, vol 102. Springer, Cham. https://doi.org/10.1007/978-3-030-05621-6_28

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  • DOI: https://doi.org/10.1007/978-3-030-05621-6_28

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