Triple effect evacuated solar still system for getting fresh water from seawater

H. Nishikawa; T. Tsuchiya; Y. Narasaki; I. Kamiya; H. Sato

doi:10.1016/S1359-4311(98)00020-9

Triple effect evacuated solar still system for getting fresh water from seawater

H. Nishikawa, T. Tsuchiya, Y. Narasaki, I. Kamiya, H. Sato

Department of System Design Engineering

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

A practical-scale solar-distillation-system (still) was developed which can yield fresh water from seawater without any consumption of fossil resources in the operation. The nominal performance is 100 kg day^-1 unit^-1 in summer at Yokohama, Japan. The still is a self-sustainable system which has 7.8 m² solar collector and 3.7 m² solar cells. It was constructed at the end of November 1996. The distillation performance showed it to be one of the best solar stills, although we tested it for only two months during the winter season, December 1996 and January 1997. A highest distillation performance of 73.6 kg day^-1 was obtained, which corresponds to 9.44 kg m^-2 day^-1 fresh water distilled at a solar radiation of 13.85 MJ m^-2 day^-1(108.3 MJ day^-1). The total latent heat of the distillation (178.8 MJ day^-1) was 1.7 times the solar radiation. The power consumption by a vacuum pump was only 326 Wh day^-1 (1.17 MJ day^-1) while the solar cells generated 952.5 Wh day^-1 (3.43 MJ day^-1) at 12.25 MJ m^-2 day^-1(45.33 MJ day^-1) solar radiation.

Original language	English
Pages (from-to)	1067-1075
Number of pages	9
Journal	Applied Thermal Engineering
Volume	18
Issue number	11
DOIs	https://doi.org/10.1016/S1359-4311(98)00020-9
Publication status	Published - 1998

Keywords

Desalination
Distillation
Solar energy
Still
Water resources

ASJC Scopus subject areas

Energy Engineering and Power Technology
Industrial and Manufacturing Engineering

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10.1016/S1359-4311(98)00020-9

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title = "Triple effect evacuated solar still system for getting fresh water from seawater",

abstract = "A practical-scale solar-distillation-system (still) was developed which can yield fresh water from seawater without any consumption of fossil resources in the operation. The nominal performance is 100 kg day-1 unit-1 in summer at Yokohama, Japan. The still is a self-sustainable system which has 7.8 m2 solar collector and 3.7 m2 solar cells. It was constructed at the end of November 1996. The distillation performance showed it to be one of the best solar stills, although we tested it for only two months during the winter season, December 1996 and January 1997. A highest distillation performance of 73.6 kg day-1 was obtained, which corresponds to 9.44 kg m-2 day-1 fresh water distilled at a solar radiation of 13.85 MJ m-2 day-1(108.3 MJ day-1). The total latent heat of the distillation (178.8 MJ day-1) was 1.7 times the solar radiation. The power consumption by a vacuum pump was only 326 Wh day-1 (1.17 MJ day-1) while the solar cells generated 952.5 Wh day-1 (3.43 MJ day-1) at 12.25 MJ m-2 day-1(45.33 MJ day-1) solar radiation.",

keywords = "Desalination, Distillation, Solar energy, Still, Water resources",

author = "H. Nishikawa and T. Tsuchiya and Y. Narasaki and I. Kamiya and H. Sato",

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AU - Nishikawa, H.

AU - Tsuchiya, T.

AU - Narasaki, Y.

AU - Kamiya, I.

AU - Sato, H.

PY - 1998

Y1 - 1998

N2 - A practical-scale solar-distillation-system (still) was developed which can yield fresh water from seawater without any consumption of fossil resources in the operation. The nominal performance is 100 kg day-1 unit-1 in summer at Yokohama, Japan. The still is a self-sustainable system which has 7.8 m2 solar collector and 3.7 m2 solar cells. It was constructed at the end of November 1996. The distillation performance showed it to be one of the best solar stills, although we tested it for only two months during the winter season, December 1996 and January 1997. A highest distillation performance of 73.6 kg day-1 was obtained, which corresponds to 9.44 kg m-2 day-1 fresh water distilled at a solar radiation of 13.85 MJ m-2 day-1(108.3 MJ day-1). The total latent heat of the distillation (178.8 MJ day-1) was 1.7 times the solar radiation. The power consumption by a vacuum pump was only 326 Wh day-1 (1.17 MJ day-1) while the solar cells generated 952.5 Wh day-1 (3.43 MJ day-1) at 12.25 MJ m-2 day-1(45.33 MJ day-1) solar radiation.

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KW - Desalination

KW - Distillation

KW - Solar energy

KW - Still

KW - Water resources

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Triple effect evacuated solar still system for getting fresh water from seawater

Abstract

Keywords

ASJC Scopus subject areas

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