@Article{hmt.17.21,
AUTHOR = {Ammar Hassan Soheel, Omar Mahmood Jumaah, Ahmed Mustaffa Saleem},
TITLE = {SIMULATION AND INVESTIGATION OF NANO-REFRIGERANT FLUID  CHARACTERISTICS WITH THE TWO-PHASE FLOW IN  MICROCHANNEL},
JOURNAL = {Frontiers in Heat and Mass Transfer},
VOLUME = {17},
YEAR = {2021},
NUMBER = {1},
PAGES = {1--7},
URL = {http://www.techscience.com/fhmt/v17n1/52509},
ISSN = {2151-8629},
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<sub>2</sub>O<sub>3</sub> nanoparticles with R134a refrigerant). The size of nanoparticles (Al<sub>2</sub>O<sub>3</sub>) 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<sup>2</sup>) 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<sub>2</sub>O<sub>3</sub> 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<sub>2</sub>O<sub>3</sub>, and found the root mean square 
of error (3.7%).},
DOI = {10.5098/hmt.17.21}
}