A waste cryogenic energy assisted freshwater generator for marine applications

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A waste cryogenic energy assisted freshwater generator for marine applications. / Liu, Meixi; Wu, Dawei; Tsolakis, Athanasios; Gao, Wenzhong.

In: Desalination, Vol. 500, 114898, 15.03.2021.

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@article{b2d6183e9cd440119f643114fd83e46e,
title = "A waste cryogenic energy assisted freshwater generator for marine applications",
abstract = "The scarcity of freshwater resources in the marine environment drives advancement of conventional desalination technologies. It is appealing to recover waste thermal energy to power desalination process. With the fast expansion of the global fleet of liquefied natural gas (LNG) powered vessels and the number of LNG terminals, it is envisaged that LNG cryogenic energy becomes an important form of waste thermal energy apart from engine exhaust. A freshwater generator assisted by LNG cryogenic energy is proposed and investigated in the paper. A semi-dynamic model of the proposed system is used to predict performance and optimal parameters. Feed-in seawater, cooling medium, and configurations of the evaporator and the condenser are three key factors to influence the freshwater production rate and required cryogenic energy. The optimal design is able to provide 1021.7 kg/h freshwater from feed-in seawater of 1296 kg/h and LNG evaporation of 3150 kg/h. A scenario study on an LNG powered cruise ferry predicted that freshwater of 16,991 kg is generated in the 48-hour voyage with the fluctuating LNG cryogenic energy from evaporation, which varies between 212 kW and 973 kW.",
keywords = "Flash evaporation, Freshwater generator, LNG cryogenic energy, Thermal distillation",
author = "Meixi Liu and Dawei Wu and Athanasios Tsolakis and Wenzhong Gao",
note = "Funding Information: The authors thank for the financial support from the EPSRC (the Engineering and Physical Sciences Research Council) of the United Kingdom through the research project ( EP/S00193X/2 ). ",
year = "2021",
month = mar,
day = "15",
doi = "10.1016/j.desal.2020.114898",
language = "English",
volume = "500",
journal = "Desalination",
issn = "0011-9164",
publisher = "Elsevier Korea",

}

RIS

TY - JOUR

T1 - A waste cryogenic energy assisted freshwater generator for marine applications

AU - Liu, Meixi

AU - Wu, Dawei

AU - Tsolakis, Athanasios

AU - Gao, Wenzhong

N1 - Funding Information: The authors thank for the financial support from the EPSRC (the Engineering and Physical Sciences Research Council) of the United Kingdom through the research project ( EP/S00193X/2 ).

PY - 2021/3/15

Y1 - 2021/3/15

N2 - The scarcity of freshwater resources in the marine environment drives advancement of conventional desalination technologies. It is appealing to recover waste thermal energy to power desalination process. With the fast expansion of the global fleet of liquefied natural gas (LNG) powered vessels and the number of LNG terminals, it is envisaged that LNG cryogenic energy becomes an important form of waste thermal energy apart from engine exhaust. A freshwater generator assisted by LNG cryogenic energy is proposed and investigated in the paper. A semi-dynamic model of the proposed system is used to predict performance and optimal parameters. Feed-in seawater, cooling medium, and configurations of the evaporator and the condenser are three key factors to influence the freshwater production rate and required cryogenic energy. The optimal design is able to provide 1021.7 kg/h freshwater from feed-in seawater of 1296 kg/h and LNG evaporation of 3150 kg/h. A scenario study on an LNG powered cruise ferry predicted that freshwater of 16,991 kg is generated in the 48-hour voyage with the fluctuating LNG cryogenic energy from evaporation, which varies between 212 kW and 973 kW.

AB - The scarcity of freshwater resources in the marine environment drives advancement of conventional desalination technologies. It is appealing to recover waste thermal energy to power desalination process. With the fast expansion of the global fleet of liquefied natural gas (LNG) powered vessels and the number of LNG terminals, it is envisaged that LNG cryogenic energy becomes an important form of waste thermal energy apart from engine exhaust. A freshwater generator assisted by LNG cryogenic energy is proposed and investigated in the paper. A semi-dynamic model of the proposed system is used to predict performance and optimal parameters. Feed-in seawater, cooling medium, and configurations of the evaporator and the condenser are three key factors to influence the freshwater production rate and required cryogenic energy. The optimal design is able to provide 1021.7 kg/h freshwater from feed-in seawater of 1296 kg/h and LNG evaporation of 3150 kg/h. A scenario study on an LNG powered cruise ferry predicted that freshwater of 16,991 kg is generated in the 48-hour voyage with the fluctuating LNG cryogenic energy from evaporation, which varies between 212 kW and 973 kW.

KW - Flash evaporation

KW - Freshwater generator

KW - LNG cryogenic energy

KW - Thermal distillation

UR - http://www.scopus.com/inward/record.url?scp=85098227794&partnerID=8YFLogxK

U2 - 10.1016/j.desal.2020.114898

DO - 10.1016/j.desal.2020.114898

M3 - Article

AN - SCOPUS:85098227794

VL - 500

JO - Desalination

JF - Desalination

SN - 0011-9164

M1 - 114898

ER -