Open Access
ARTICLE
SIMULATION AND INVESTIGATION OF NANO-REFRIGERANT FLUID CHARACTERISTICS WITH THE TWO-PHASE FLOW IN MICROCHANNEL
Ammar Hassan Soheel, Omar Mahmood Jumaah, Ahmed Mustaffa Saleem*
Technical Engineering College, Northern Technical University, Mosul, 41001, Iraq
* Corresponding author. Email: ahmedmustafa@ntu.edu.iq
Frontiers in Heat and Mass Transfer 2021, 17, 1-7. https://doi.org/10.5098/hmt.17.21
Abstract
This paper presents a simulation and investigation of the heat transfer coefficient, pressure drop, and thermal conductivity of two - phase flow. The
simulation was performed of mixtures (Al
2O
3 nanoparticles with R134a refrigerant). The size of nanoparticles (Al
2O
3) which is used in this study is 30
nm and volume concentrations are 0.015 and 0.03. The two – phase flowing through a horizontal circular microchannel of (diameter 100 µm, and
length 20 mm) under constant heat flux (3000 W/m
2) and constant wall temperature (330 K), also in this study used the inlet temperature at -20 oC and
mass flow rates are 0.3, 0.4, 0.5, 0.6, 0.7 and 0.8 g/s using in the dissipation of heat from electronic circuits by evaporation. The simulation is achieved
by CFD numerical model using FLUENT ANSYS version 15 software. The results indicate the best temperature, pressure drop, density and volume
fraction for two-phase flow nanorefrigerant in the microchannel. The higher heat transfer coefficient and pressure drop of two-phase nanorefrigerant
flow at a high volume concentration (0.03) of Al
2O
3 when the mass flow rate is maximum. Finally, compared heat transfer coefficient of this study
with the results of Kumar et al. (2013) at variation the mass flow rate, and found the root mean square of error (10%), also compared heat transfer
coefficient of this study with results of Hernández et al. (2016) at variable volume concentration of nanoparticles Al
2O
3, and found the root mean square
of error (3.7%).
Keywords
Cite This Article
Soheel, A. H., Jumaah, O. M., Saleem, A. M. (2021). SIMULATION AND INVESTIGATION OF NANO-REFRIGERANT FLUID CHARACTERISTICS WITH THE TWO-PHASE FLOW IN MICROCHANNEL.
Frontiers in Heat and Mass Transfer, 17(1), 1–7.