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Heat Transfer Enhancement with Surfactants in Horizontal Bundle Tubes on Absorber
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 Title & Authors
Heat Transfer Enhancement with Surfactants in Horizontal Bundle Tubes on Absorber
Seol, Won-Sil; Kwon, Oh-Kyung; Moon, Choon-Geun; Yoon, Jung-In;
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This research was concerned with the enhancement of heat transfer by surfactant added to the aqueous solution of LiBr. Different horizontal tubes were tested with and without an additive of normal octyl alcohol. The test tubes were a bare tube, floral tube and hydrophilic tube. The additive mass concentration was about 0.055.5%. The heat transfer coefficient was measured as a function of solution flow rate for the range of 0.010.034 kg/ms. The experimental results were compared with cases without surfactant. The enhancement of heat transfer by Marangoni convection effect generated by the addition of the surfactant is observed in each test tube. The increase of heat transfer coefficient by surfactant addition is about 3590% for bare tube, 4070% for the floral tube, 3050% for the hydrophilic tube and was higher for the cases with smaller a little solution flow rates.
Absorber;Enhancement of Heat Transfer;Surfactant;Heat Transfer Coefficient;
 Cited by
신흡수용액을 이용한 중온수 흡수식 냉동기의 사이클 해석,권오경;윤재호;문춘근;윤정인;

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