In this study, the characteristics of the heat flow on SA(supply air) side of the white smoke reducing heat exchange system according to the change of SA velocity were analyzed in the winter condition (outside temperature 0℃). Also, the mixing process of SA and the EA(exhaust air) is presented in the psychrometric chart to confirm the possibility of reducing white smoke. Solidworks flow simulation was used to analyze the heat flow on the heat exchange system under uniform conditions. As the inflow velocity of SA increased, the temperature of SA decreased due to the convective heat transfer improvement due to the active flow in SA system. And the outlet temperature and absolute humidity of the mixing zone decreased significantly. At SA velocity 7 m/s, the outlet temperature and absolute humidity decreased to about 58% and 82%, respectively.

ABSTRACT
 1. 서 론
 2. 전산해석 방법 및 조건
  2.1 전산해석 방법
  2.2 개념도 및 해석조건
 3. 해석결과 및 고찰
 4. 결 론
 References

• 왕쩐후안(Graduated student, Dep. of Mech. Eng., Sunmoon University) | Zhen-Huan Wang
• 권영철(Dep. of Mech. Eng., Sunmoon University) | Young-Chul Kwon Corresponding Author