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http://dx.doi.org/10.6110/KJACR.2016.28.11.428

Heat Transfer Characteristics of Fin-Tube Heat Exchanger using Two-Port Tube of Small Inner Diameter by Mechanical Expansion  

Lee, Sangmu (Shizuoka Works, Mitsubishi Electric Corp.)
Park, Byung-Duck (Department of Automotive Engineering, Kyungpook National University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.28, no.11, 2016 , pp. 428-433 More about this Journal
Abstract
The fin and tube heat exchanger using a two-port tube has in air-conditioner heat exchanger because heat transfer performance. This study investigates the feasibility of a fin and tube heat exchanger using two-port copper tube by mechanical expansion. The optimum size of the tube-expanding bullet for the heat exchanger using two-port tube was through numerical calculation. The heat exchanger using a two-port tube was fabricated by mechanical expansion, and the heat exchanger performance was evaluated condensation and evaporation experiments. Compared to the heat exchanger of a conventional circular tube, the pressure drop per unit length of the heat exchanger with a two-port tube decreased. Compared to the heat exchanger using a conventional circular tube, the overall heat transfer coefficient of heat exchanger with a two-port tube increased up to 13% in the case of condensation, and up to 25% in the case of evaporation. The two-port tube heat exchanger outperforms conventional heat exchanger for air conditioner with a inner grooved circular tube.
Keywords
Heat exchanger; Two-port tube of small inner diameter; Tube expanding; Heat transfer coefficient; Pressure drop;
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Times Cited By KSCI : 3  (Citation Analysis)
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