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Experimental investigation of oscillating heat pipe efficiency for a novel condenser by using Fe3O4 nanofluid

  • Hadi Davari
  • Hamid Reza GoshayeshiEmail author
  • Hakan F. Öztop
  • Issa Chaer
Article
  • 22 Downloads

Abstract

This paper presents a novel study on the performance of closed-loop oscillating heat pipe (CLOHP) using iron oxide (Fe3O4) as the working fluid for three types of condensers. The tested CLOHP consists of six turns made of copper tubes, 4.5 mm outer diameter and 3 mm inner diameter with heating power input in a range of 0–200 W. The experimental results showed that the thermal performance of the CLOHPs has been improved when the corrugated horizontal condenser was used compare to straight and corrugated vertical condensers. Based on 800 sets of available experimental data, the results show that the CLOHPs with corrugated horizontal condenser had better thermal performance when charged with Fe3O4/water at 2% mass concentration.

Keywords

Oscillating heat pipe Heat resistant Thermal efficiency Nanofluid Corrugated horizontal condenser 

List of symbols

A

Area (m2)

D

Diameter (mm)

I

Electric current (A)

V

Electrical voltage (V)

q

Heat flux (W m−2 K−1)

q

Heating power (W)

h

Heat transfer coefficient (W m−2 K−1)

L

Length (m)

T

Temperature (K)

R

Thermal resistance (KW-1)

ŋ

Efficiency (%)

Greek symbols

Δ

Uncertainty

ρ

Density (kg m−3)

Subscripts

ad

Adiabatic

c

Condenser

e

Evaporator

i

Inner

in

Input

out

Output

sat

Saturation

Notes

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • Hadi Davari
    • 1
  • Hamid Reza Goshayeshi
    • 1
    Email author
  • Hakan F. Öztop
    • 2
  • Issa Chaer
    • 3
  1. 1.Department of Mechanical Engineering, Mashhad BranchIslamic Azad UniversityMashhadIran
  2. 2.Department of Mechanical Engineering, Technology FacultyFırat UniversityElazigTurkey
  3. 3.Centre for Civil and Building Service Engineering, School of the Built Environment and ArchitectureLondon South Bank UniversityLondonUK

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