Proceedings of the SAREK Conference (대한설비공학회:학술대회논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Numerical Analysis on the Flow Characteristics in Steam Ejector

  • Shin, You-Sik (Graduate School, Dept. of Mechanical and Precision Engineering, Gyeongsang National University) ;
  • Jin, Zhen-Hua (Graduate School, Dept. of Mechanical and Precision Engineering, Gyeongsang National University) ;
  • Chun, You-Sin (Graduate School, Dept. of Mechanical and Precision Engineering, Gyeongsang National University) ;
  • Lee, Sang-Chul (Graduate School, Dept. of Mechanical and Precision Engineering, Gyeongsang National University) ;
  • Jeong, Hyo-Min (School of Mechanical and Aerospace Engineering, Gyeongsang National University) ;
  • Chung, Han-Shik (School of Mechanical and Aerospace Engineering, Gyeongsang National University)
  • Published : 2006.06.21
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Abstract

This study performed of a water cooling system by using a steam ejector and jet condenser to drop the temperature of the water in aquafarm by about $5^{\circ}C$ from $25^{\circ}C$ or higher in this research, to replace the present water cooling system, Ive focused on a water cooling system operated by latent heat of evaporation, thus this system needs a vacuum pressure to evaporate the water in enclosed tank. The water cooling effects are dependent on the vacuum pressure in the enclosed tank, and the cooling water is generated by evaporation. As the experimental results, the absolute vacuum pressure obtained was about $5{\sim}8mmHg$ using a steam driven ejector with jet condenser in experiments. The obtained results are respectively ${\Delta}T=7^{\circ}C$, ${\Delta}T=5^{\circ}C$ and ${\Delta}T=5.5^{\circ}C$ at heat exchanger flow rate 4L/M. The obtained results are respectively ${\Delta}T=5.5^{\circ}C$, ${\Delta}T=5.5^{\circ}C$ and ${\Delta}T=5.5^{\circ}C$ at heat exchanger flow rate 4.5L/M.

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