TY - GEN
T1 - Effect of concentration and loading fluid of nanofluids on the thermal resistance of sintered powder wick heat pipe
AU - Putra, Nandy Setiadi Djaya
AU - Septiadi, Wayan Nata
AU - Irwansyah, Ridho
PY - 2013
Y1 - 2013
N2 - Heat pipes have been widely used as one of the alternative methods to absorb more heat in the cooling systems of electronic devices. One of the ways to improve the thermal performance of heat pipes is to change the fluid transport properties and flow features of working fluids using anofluids. The purpose of this research was to investigate the effect of Al2O3-water nanofluids concentration and fluid loading to the thermal resistance between evaporator and adiabatic section of copper straight sintered copper powder wick heat pipe. In this research, sintered powder wick heat pipes were manufactured and tested to determine the thermal resistance of the sintered powder wick heat pipes which charged with water and Al2O3-water nanofluids. The concentrations of the nanoparticles were varied from 1%, 3% and 5% of the volume of the base fluid. The result shows that Al2O3-water nanofluids have the ability to reduce the temperature at the evaporator section and the thermal resistance of heat pipe. The increase in nanofluids concentration could give significant effect to reduce the thermal resistance of heat pipes. The amount of working fluid charged into the heat pipes also gives an effect in heat pipes thermal resistance, where the thermal resistance was lower when the heat pipe was charged with 60% of its volume. The formation of coating layer at sintered powder wick also can fixed the wick porosity and cause roughness on the surface of granular pore which the increased of capillary could give the effect for enhancement of heat pipe performance.
AB - Heat pipes have been widely used as one of the alternative methods to absorb more heat in the cooling systems of electronic devices. One of the ways to improve the thermal performance of heat pipes is to change the fluid transport properties and flow features of working fluids using anofluids. The purpose of this research was to investigate the effect of Al2O3-water nanofluids concentration and fluid loading to the thermal resistance between evaporator and adiabatic section of copper straight sintered copper powder wick heat pipe. In this research, sintered powder wick heat pipes were manufactured and tested to determine the thermal resistance of the sintered powder wick heat pipes which charged with water and Al2O3-water nanofluids. The concentrations of the nanoparticles were varied from 1%, 3% and 5% of the volume of the base fluid. The result shows that Al2O3-water nanofluids have the ability to reduce the temperature at the evaporator section and the thermal resistance of heat pipe. The increase in nanofluids concentration could give significant effect to reduce the thermal resistance of heat pipes. The amount of working fluid charged into the heat pipes also gives an effect in heat pipes thermal resistance, where the thermal resistance was lower when the heat pipe was charged with 60% of its volume. The formation of coating layer at sintered powder wick also can fixed the wick porosity and cause roughness on the surface of granular pore which the increased of capillary could give the effect for enhancement of heat pipe performance.
KW - Heat pipe
KW - Nanofluids
KW - Sintered powder wick
UR - http://www.scopus.com/inward/record.url?scp=84873734012&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.651.728
DO - 10.4028/www.scientific.net/AMR.651.728
M3 - Conference contribution
AN - SCOPUS:84873734012
SN - 9783037856130
T3 - Advanced Materials Research
SP - 728
EP - 735
BT - 2012 International Conference on Engineering Materials, ICEM 2012
T2 - 2012 International Conference on Engineering Materials, ICEM 2012
Y2 - 30 December 2012 through 31 December 2012
ER -