[논문]저압 증발기를 갖는 청수제조 장치에 관한 실험적 연구

정한식; 위보워; 이경환; 신용한; 정효민

doi:10.9726/kspse.2011.15.2.025

[국내논문] 저압 증발기를 갖는 청수제조 장치에 관한 실험적 연구
Experimental Study on Fresh Water Generation System with Low Pressure Evaporation 원문보기

한국동력기계공학회지 = Journal of the korean society for power system engineering, v.15 no.2, 2011년, pp.25 - 30

정한식 (경상대학교 에너지공학과.해양산업연구소) , 위보워 (경상대학교 대학원 정밀기계공학과) , 이경환 (경상대학교 대학원 정밀기계공학과) , 신용한 (경상대학교 대학원 정밀기계공학과) , 정효민 (경상대학교 에너지공학과.해양산업연구소)

Abstract ▼ AI-Helper

A fresh water generation system is designed for converting brackish water or seawater into fresh water. In this paper fresh water generation by distillation process that evaporates feed water and subsequently condenses vapor as evaporation product to get fresh water was studied and city water was employed as feed water. The system uses the ejector to create a vacuum, under which liquid can be evaporated at lower temperature than it at normal or atmospheric condition, hence less energy consumption. The effect of various operating conditions i.e. temperature of feed water and different orifice diameters were studied experimentally to investigate the characteristic of the system. It was found that these parameters have significant effect in the performance of fresh water generation system with low pressure evaporation.

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문제 정의

The cost of decreasing pressure is negligible in comparison with the cost of heating to the boiling point. This study demonstrates the possible application of vacuum fresh water generation for water purification using low temperature of feed water where the heat can be applied as waste heat from water cooling machine of ship.
60 and 70℃. This study was concerned with the thermal and pressure characteristic and performance in case of condensed vapor yield of single effect configuration combined with thermal vapor compressor (ejector) Fig.1.

제안 방법

Simulation of the desalination system was also carried out by Kudish et al.10), and their work was validated with experimental measurements.

대상 데이터

the heat requirement. The system consists of several main equipments there were pump, heater, evaporator which design to have low pressure, condenser, and ejector. Briefly water from tank (water tank) is pumped to the nozzle of ejector as a motive fluid to create low pressure region at the nozzle exit plane inside the ejector.

성능/효과

The experimental study shows that a vacuum desalination is feasible and has some advantages, water can be boiled at lower temperature.

참고문헌 (11)

K. Schneider and T.S. Van Gassel, 1984, Chem. lng. Tech., Vol. 7, p. 514.
R.W. Schofield, A.G. Fane and C.J.D. Fell, 1987, Desalination 64 : 23 1.

상세보기
Senthil Kumar, R., Mani, A., Kumaraswamy, 2007, "S. Experimental studies on desalination system for ocean thermal energy utilization", Desalination 207 : 1-8.

상세보기
J.H. Tay, S.C. Low, S. Jeyaseelan, 1996, "Vacuum desalination for water purification using waste heat". Desalination, pp. 131-135.
S.C. Low and J.H. Tay, 1991, "Vacuum desalination using waste heat from a steam turbine", Desalination 106, pp. 321-331.
J.H. Tay, S.C. Low and S. Jeyaseelan, 1996, "Vacuum desalination for water purification using waste heat", Desalination 106, pp. 131-135.

상세보기
A. Mani, 1982, "Studies on single sloped solar still", National Solar Energy Convention, I.I.T., New Delhi, pp. 17.4-17.7.
A. Mani, Experimental studies on single sloped solar still, M.Teeh Thesis, liT, Madras, 1982.
A. Mani., S. Kumaraswamy and R. Senthil Kumar, 2002, "Utilisation of ocean thermal energy for desalination of brackish water, Technical Report", National Insti tute of Technology, Chennai.
A.I. Kudish, E.G. Evseev, G. Walter and T. Priebe, 2003, "Simulation study on a solar desalination system utilizing an evaporator/condenser chamber", Energy Conv. Manage., Vol. 44, pp. 1653-1670.

상세보기
R. Rahman, M.N.A Hawlader and M. Malek, 2003, "An experiment with single effect submerged vertical etube evaporator In multieffect desalination", Desalination 156, pp. 91-100

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