수산해양교육연구 (Journal of Fisheries and Marine Sciences Education)
- 제4권1호
- /
- Pages.47-61
- /
- 1992
- /
- 1229-8999(pISSN)
- /
- 2288-2049(eISSN)
형상이 다른 수평 원형 전열관의 응축 성능에 관한 연구
A Study on the Condensation Performance for the Horizontal Heat Transfer Tubes with Various Fin Attached
- Han, Kyu-Il (National Fisheries university of Pusan) ;
- Park, Jong-Un (Wando Fisheries High School)
- 발행 : 1992.06.30
초록
An experimental study was carried out to investigate the condensation performance for the horizontal cylindrical heat transfer tube with various fin attached using R-11 vapor. The heat transfer tube used in this study was supplied by SUNG HYUNG METAL CO., LTD. Four different types of heat transfer tubes (plain tube, SH-CYR tube, thermocor tube and thermoexcel tube) were used. Each tube was surrounded by circular acrylate tube, and R-11 gas heated by boiler flows into the acrylate tube. Cooling water counter-flows in heat transfer tubes. Heat transfer coefficient of the plain tube from measured data was compared with those of three other tubes. The results are summarized as follows: 1. As the cooling water temperature decreased, the liquid film of R-11 turned to droplet drop on the top surface of the horizontal tube. 2. Heat transfer coefficient calculated theoretically was higher than that obtained from the experimental data. 3. As far as the condensation concerns the thermocor tube is the highest, the SH-CYR tube is the second, and the thermoexcel tube is the third excluding the plain tube.
키워드