In actual seawater desalination plant, the pressure loss due to frictional force of pipe is about 3~5 bar. Also, the pressure loss at pipe connection about 1~3 bar. Therefore, the total pressure loss in the pipe is expected to be about 4~8 bar, which translates into 0.111 to 0.222 kWh/m3 of energy when converted into the Specific Energy Consumption(SEC). Reducing energy consumption is the most important factor in ensuring the economics of seawater desalination processes, but pressure loss in piping is often not considered in plant design. It is difficult to prevent pressure loss due to friction inside the pipe, but pressure loss at the pipe connection can be reduced by proper pipe design. In this study, seawater desalination plant piping analysis was performed using a commercial network program. The pressure loss and SEC for each case were calculated and compared by seawater desalination plant size.

ABSTRACT
1. 서 론
2. 연구방법
    2.1 해수담수화 플랜트 공정 구성
    2.2 배관 해석 프로그램
3. 결과 및 고찰
    3.1 플랜트 규모별 해석
    3.2 배관 조건 변경에 따른 해석
    3.3 SWRO-BWRO 배관 해석
    3.4 압력, 유량별 배관 해석
4. 결 론
References

• 최지혁(국민대학교 건설시스템공학부) | Jihyeok Choi (School of Civil and Environmental Engineering, Kookmin University)
• 최용준(국민대학교 건설시스템공학부) | Yongjun Choi (School of Civil and Environmental Engineering, Kookmin University)
• 양흥식(국민대학교 건설시스템공학부) | Heungsik Yang (School of Civil and Environmental Engineering, Kookmin University)
• 이상호(국민대학교 건설시스템공학부) | Sangho Lee (School of Civil and Environmental Engineering, Kookmin University) Corresponding author
• 최준석(한국건설기술연구원 국토보전연구본부) | June-Seok Choi (Department of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology)