이요한
Journal of the Korean Solar Energy Society Vol. 29, No. 5, 2009
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탄소나노튜브를 적용한 나노유체의 비등 열전달계수
Boiling Heat Transfer Coefficients of Nanofluids Using Carbon Nanotubes
논문 한국태양에너지학회 논문집
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Journal of the Korean Solar Energy Society
Vol. 29, No. 5, 2009 IS S N 1 5 9 8 - 6 4 1 1
한국태양에너지학회 논문집 Vol. 29, No. 5, 2009
36
이요한
Journal of the Korean Solar Energy Society Vol. 29, No. 5, 2009
37
한국태양에너지학회 논문집 Vol. 29, No. 5, 2009
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이요한
Journal of the Korean Solar Energy Society Vol. 29, No. 5, 2009
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″
0 10 20 30
Twall-Tsat.
0 200 400 600 800 1000
Heat flux (kW/m2)
Present data (CHF=560) You et al.'s data (CHF=540) Rohsenow's correlation
Stephan and Abdelsalam's correlation Zuber's CHF(560.5)
한국태양에너지학회 논문집 Vol. 29, No. 5, 2009
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0 400 800 1200 1600 2000
Heat flux (kW/m2)
0 20000 40000
h(W/m2K)
0.001%
0.01%
0.05%
0 40 80 120 160 200
Heat flux (kW/m2)
0 4000 8000 12000 16000 20000
h(W/m2K)
Pure water Pure water + PVP 0.0001% + CNT 0.001%
0.01%
0.05%
이요한
Journal of the Korean Solar Energy Society Vol. 29, No. 5, 2009
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0 20 40 60
Twall-Tsat.
0 500 1000 1500 2000 2500
Heat flux (kW/m2)
Pure water (CHF=560) Pure water+PVP (CHF=600) 0.0001% + CNT (CHF=1500) 0.001% (CHF=1680) 0.01% (CHF=1400) 0.05% (CHF=900 )
한국태양에너지학회 논문집 Vol. 29, No. 5, 2009
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0.0001 0.001 0.01 0.1
CNT concentration (%vol.)
0 500 1000 1500 2000
Critical heat flux(W/m
Pure water (Wire heater )
Pure water (Flat heater )
이요한
Journal of the Korean Solar Energy Society Vol. 29, No. 5, 2009
