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Arabian Journal for Science and Engineering

, Volume 44, Issue 2, pp 753–761 | Cite as

Replacement of Present Conventional Condenser of Household Refrigerator by Louver Fin Micro-Channel Condenser

  • Mohammad Harun-Or-RashidEmail author
  • Ji Hwan Jeong
Research Article - Mechanical Engineering
  • 33 Downloads

Abstract

In this paper, numerical simulation of wire on tube condenser and louver fin micro-channel heat exchanger is discussed. Simulation data of both heat exchangers were compared with the experimental data, and they show good agreement. In case of louver fin micro-channel heat exchanger, prediction error of heat capacity was within ± 5%. In addition, from the result of simulation, it was found that, for same thermal performance, micro-channel heat exchanger occupies less space as well as requires less refrigerant charge than wire on tube condenser. Therefore, in this paper, two louver fin micro-channel condensers are proposed to replace wire on tube condenser of household refrigerator. Response surface methodology was used to find out the optimal condition of the louver fin micro-channel condenser.

Keywords

Micro-channel Louver fin Response surface methodology Wire on tube heat exchanger 

List of symbols

\(C_\mathrm{p}\)

Specific heat (J \(\hbox {kg}^{-1}\hbox { K}^{-1}\))

\(D_\mathrm{h}\)

Hydraulic diameter (m)

f

Friction factor

G

Mass velocity (kg \(\hbox {m}^{-2}\,\hbox {s}^{-1}\))

h

Heat transfer coefficient (W \(\hbox {m}^{-2}\hbox {K}^{-1}\))

HEX

Heat exchanger

j

Colburn factor

\(L_\mathrm{seg}\)

Tube segment length (m)

m

Mass flow rate (kg \(\hbox {s}^{-1}\))

MCHEX

Micro-channel heat exchanger

\(\Delta P\)

Pressure drop (Pa)

Pr

Prandtl number

T

Temperature (\(^{\circ }\)C)

u

Velocity (\(\hbox {m s}^{-1}\))

Subscripts

a

Air

f

Friction

m

Momentum

r

Refrigerant

Greek symbol

\(\rho \)

Density (kg \(\hbox {m}^{-3}\))

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Copyright information

© King Fahd University of Petroleum & Minerals 2018

Authors and Affiliations

  1. 1.Department of Mechanical and Production EngineeringAhsanullah University of Science and TechnologyDhakaBangladesh
  2. 2.School of Mechanical EngineeringPusan National UniversityBusanRepublic of Korea

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