An Experimental Study on Solidification of Pure Water or a Dilute Salt Solution in a Horizontal Copper Tube

Authors

Hwa-Chong Tien, Associate Professor, Department of Mechanical and Marine Engineering, National Taiwan Ocean University, Keelung, Taiwan, R.O.C.
Sih-Li Chen, Professor, Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C.
Bing-Shiang Yang, Graduate Student, Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan, R.O.C.

Abstract

Solidification of pure water and NaCl-HO solutions in a copper tube is investigated experimentally. The morphology and growth of the two phase region is observed photographically, In the experiments of NaCl-H2O solutions, the salt concentrations in the solutions are smaller than the concentration at the eutectic point. The coolant temperature is higher than the eutectic temperature. The supercooling phenomenon and the effects of the coolant temperature, initial temperature of water or NaCl-HzO solution, and the concentrations of the solutions are studied in detail. In addition to the photographs, results presented also nclude the temperature responses of water and NaCl-H2O solutions at various positions inside the tube as well as the mass fraction of solid. A comparison is made for the mass fraction of solid between the present study and the numerical results in the literature. Possible reasons for explaining the discrepancy are discussed.

Recommended Citation

Tien, Hwa-Chong; Chen, Sih-Li; and Yang, Bing-Shiang (1997) "An Experimental Study on Solidification of Pure Water or a Dilute Salt Solution in a Horizontal Copper Tube," Journal of Marine Science and Technology: Vol. 5: Iss. 1, Article 9.
DOI: 10.51400/2709-6998.2540
Available at: https://jmstt.ntou.edu.tw/journal/vol5/iss1/9