Single-Phase Heat Transfer and Fluid Flow Phenomena of Microchannel Heat Exchangers

Dang, Thanhtrung; Teng, James T. C.; Chu, Jiann-Cherng; Xu, Tingting; Huang, Suyi; Jin, Shiping; Zheng, Junjian

doi:10.5772/32989

Cited by 3 publications

(1 citation statement)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They found that among three kinds of microchannels, the microchannel with rectangular crosssection has the lowest thermal resistance, followed by trapezoidal and triangular cross-sections microchannels. Dang et al [15], investigated the effect of heat transfer and pressure drop of water in five rectangular-shaped microchannel heat sinks with different configurations (S-type & I-type), in order to optimize performance and design. They showed that when inlet temperature and mass flow rate is kept constant, the performance index of counter flow is always higher than parallel flow.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Pressure Drop and Heat Transfer in a Straight Rectangular and Semi Cylindrical Projections Microchannel Heat Sink

Zunaid¹

2017

Journal of Thermal Engineering

View full text Add to dashboard Cite

The heat transfer and pressure drop characteristics of a straight rectangular and semi cylindrical projections microchannel heat sink were investigated. The heat sinks, made of copper, were aligned in row as a cluster of 21 microchannels, 231 µm wide and 713 µm deep. Water was used as cooling fluid and was made to flow through the channels. A three dimensional analysis was done for Reynolds number ranging between 200 to 1000 with constant heat flux of 10 6 W/m 2 defined relative to the platform area of the heat sink. The temperature rise and pressure drop of the fluid in straight microchannel heat sink was evaluated using ANSYS-CFX package and was validated using experimental data. Similar analysis was done for semi cylindrical projections microchannel heat sink by solving the conjugate heat transfer problem. A comparison of heat transfer and pressure drop between rectangular and semi cylindrical projections microchannel was done and the results were laid out. Results shows that heat transfer increases with the use of semi cylindrical projections microchannel heat sink.

show abstract

Section: Introductionmentioning

confidence: 99%

Numerical Study of Pressure Drop and Heat Transfer in a Straight Rectangular and Semi Cylindrical Projections Microchannel Heat Sink

Zunaid¹

2017

Journal of Thermal Engineering

View full text Add to dashboard Cite

show abstract

Heat transport investigation of hybrid nanofluid (Ag-CuO) porous medium flow: Under magnetic field and Rosseland radiation

Hassan

Hussain

Arshad

et al. 2022

Ain Shams Engineering Journal

View full text Add to dashboard Cite

Numerical and Experimental Investigations on Heat Transfer Phenomena of an Aluminium Microchannel Heat Sink

Dang

Tran

Teng

2011

AMM

View full text Add to dashboard Cite

The study was done both numerically and experimentally on the heat transfer behaviors of a microchannel heat sink. The solver of numerical simulations (CFD - ACE+software package) was developed by using the finite volume method. This numerical method was performed to simulate for an overall microchannel heat sink, including the channels, substrate, manifolds of channels as well as the covered top wall. Numerical results associated with such kinds of overall microchannel heat sinks are rarely seen in the literatures. For cases done in this study, a heat flux of 9.6 W/cm2was achieved for the microchannel heat sink having the inlet temperature of 25 °C and mass flow rate of 0.4 g/s with the uniform surface temperature of bottom wall of the substrate of 50 °C; besides, the maximum heat transfer effectiveness of this device reached 94.4%. Moreover, in this study, when the mass flow rate increases, the outlet temperature decreases; however, as the mass flow rate increases, the heat flux of this heat sink increases also. In addition, the results obtained from the numerical analyses were in good agreement with those obtained from the experiments as well as those from the literatures, with the maximum discrepancies of the heat fluxes estimated to be less than 6 %.

show abstract

Single-Phase Heat Transfer and Fluid Flow Phenomena of Microchannel Heat Exchangers

Cited by 3 publications

References 29 publications

Numerical Study of Pressure Drop and Heat Transfer in a Straight Rectangular and Semi Cylindrical Projections Microchannel Heat Sink

Numerical Study of Pressure Drop and Heat Transfer in a Straight Rectangular and Semi Cylindrical Projections Microchannel Heat Sink

Heat transport investigation of hybrid nanofluid (Ag-CuO) porous medium flow: Under magnetic field and Rosseland radiation

Numerical and Experimental Investigations on Heat Transfer Phenomena of an Aluminium Microchannel Heat Sink

Contact Info

Product

Resources

About