Browse > Article
http://dx.doi.org/10.5916/jkosme.2015.39.6.604

A Study on the Heat Transfer Characteristic of Insulated Multi Core Tube  

Park, Sang-Kyun (Division of Marine Information Technology, Korea Maritime and Ocean University)
Lee, Tae-Ho (Department of Power System Engineering, Kunsan National University)
Kim, Myoung-Jun (Department of Power System Engineering, Kunsan National University)
Abstract
In this paper, we study the characteristics of heat transfer for an insulated multi-core tube using glass wool as an insulator for the multi-core tube. By performing experiments and modeling, we examine the variations in the temperature characteristics of hydraulic oil inside the multi-core tube with atmosphere temperature, inlet temperature, and the flow rate of hydraulic oil for the insulated multi-core tube that we developed. When the minimum inlet flow rate of hydraulic oil employed within the scope of the research is 0.29 l/min, the temperature difference obtained in the experiments and numerical analysis was a maximum of $3^{\circ}C$. For a constant atmospheric temperature, as the inlet temperature of the hydraulic oil increases, the outlet temperature of the hydraulic oil will also increase, regardless of its inlet flow rate. Further, when the inlet flow rate of the hydraulic oil is more than 1.01 l/min, the effect of the atmospheric temperature on the temperature drop of the hydraulic oil is low.
Keywords
Insulated multi-core tube; Glass wool; Heat transfer; Insulation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 J. S. Chun, "Selection procedure and classification of hydraulic oils," Journal of the Korea Fluid Power Systems Society, vol. 1, no. 2, pp. 1-8, 2004 (in Korean).
2 Daechun Industrial Co., LTD., http://www.daechun.co.kr/2013_kor/images/contents2/4_1/E-brochure(English).pdf, Accessed February 04, 2015.
3 GS-Hydro, http://www.gshydro.com/gs-hydro-products/multicore-tubes, Accessed February 04, 2015.
4 Desen Co., LTD., http://www.desen.co.kr/DESEN%20VER2(LOW).pdf, Accessed February 04, 2015.
5 Desen Co., LTD., http://www.accutech.net/wp-content/uploads/2010/03/4200-M-2-multitube.pdf, Accessed February 04, 2015.
6 M. S. Choi, B. Y. Lee, J. S. Ahn, and C. S. Shin, "Development of multi core tube having flame retardant performance," Proceedings of Korean Institute of Fire Science & Engineering Spring Conference, pp. 46-52, 2002 (in Korean).
7 M. J. Kim, S. K. Park, and T. H. Lee, "A study on the temperature characteristic of insulated multi-core tube," Proceedings of Korean society for Power System Engineering Fall Conference, pp. 27-28, 2014 (in Korean).
8 DNDE, http://www.dnde.co.kr/menu_e2/menu_e2_4.asp, Accessed February 04, 2015.