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Abstract
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In the past, water and energy crises were resolved with fossil fuels and groundwater resources. Nowadays,
several research and engineering activities are focusing on combined design of the units and integrated processes
due to reduction of underground resources and increased carbon dioxide emissions. In this paper, an integrated
structure is developed that includes a cryogenic air separation unit, an organic Rankine cycle (ORC), a liquefied
natural gas (LNG) regasification ,a noxy-fue lpowe rplant ,an d amult ieffe ctdistillati on ordesalinati on(MED).
This integrated process produces 309.1 MW power, 17.36 kg/s fresh water, and 88.4 kg/s liquid carbon dioxide.
A heat recovery operation on the heat produced from the oxy-fuel power plant is performed to provide the heat
required for the ORC, MED unit, and regasificatio nsystem .I nth eintegrate dstructure ,th etota ltherma lenergy
and exergy efficienci esa re74.1 9%a nd91.73 %,respectivel y.T heexer gyanalys is oft heintegrat edsystem
reveals that the highest exergy destruction occurs in the reactors with a magnitude of 57.30%, followed by the
heat exchanger (14.97%). It is also found that the total thermal energy and exergy efficienci es oft hedeveloped
integrated configuratio nar e11.71 %an d33.17 %highe rtha nthos eo fsimila rstructure sreporte di nth elit-
erature. Using the annualized cost method, the economic analysis shows that the investment return period and
the prime cost of product are equal to 3.186 years and 0.1480 US$/kWh, respectively. A systematic sensitivity
analysis is then conducted to optimize the design and operation of the integrated system. This research work
offer susefu ltheoretica lan dpractica ltips/guideline st odevelo pa noptima lhybridize dproces sfo rpowe rgen-
eration, carbon dioxide capture, and fresh water production.
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