Thermal Analysis of a Cylindrical Sintered Wick Heat Pipe

  • Faiza Mohamed NasirEmail author
  • Mohd. Zulkifly Abdullah
  • Fairosidi Idrus
Part of the Advanced Structured Materials book series (STRUCTMAT, volume 102)


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.


Heat pipe Simulation Superconductor Resistance network Lumped capacitance 



Thickness (m)


Heat input (W)


Wick porosity (fraction)


Nusselt number


Dynamic viscosity (kg/m s)


Density (kg/m3)


Thermal capacity (J/K)


Specific heat capacity (J/kg K)


Diameter of the heat pipe (m)


Convection heat transfer coefficient (W/m2 K)


Thermal conductivity of material (W/m K)


Length of the section (m)


The Prandtl number


Thermal resistance (W/K)


Radius of the heat pipe (m)


The Reynold number


Temperature (K)


Time (s)


Time constant (s)


Ambient condition


Convection at the condenser




Adiabatic section


Condenser section


Evaporator section


Inner of the heat pipe


Liquid in the wick


Outer of the heat pipe


Heat pipe wall



p, c

Pipe wall at the condenser

p, e

Pipe wall at the evaporator



w, c

Liquid-wick combination at the condenser

w, e

Liquid-wick combination at the evaporator


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Faiza Mohamed Nasir
    • 1
    • 2
  • Mohd. Zulkifly Abdullah
    • 2
  • Fairosidi Idrus
    • 3
  1. 1.Malaysian Spanish Institute, Universiti Kuala LumpurKedahMalaysia
  2. 2.Universiti Sains MalaysiaNibong TebalMalaysia
  3. 3.Universiti Teknologi MARAPermatang PauhMalaysia

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