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- W3135279414 abstract "In freshwater-scarce coastal regions, increasing water demand has always been met via coupling thermal desalination systems with combined heat and power plants for many decades. These mature hybrid plants are known as cogeneration power and desalination plants (CPDP). Gas turbine (GT) driven CPDPs to suffer a performance drop in the summer months due to the high-temperature ambient air intake which coincides with the season when power demand is highest. As a result, fuel consumption increases significantly to maintain these plants at full load conditions. At the expense of purified water, evaporative cooling (EC) has been proven to be a cost-effective solution to combat the degradation in the plants' performance in the summer months. Several studies in the past propose the more complex waste heat or solar energy-fired absorption refrigeration (AR) systems to combat this performance degradation. By performing an energy/exergy analysis and an hour-by-hour simulation on a conceptual plant representing an existing utility-scale GT-driven CPDP, this study analyzes the thermodynamic performance with and without EC and AR systems. Based on the simulation results, the power generated per GT unit decreases 0.65% for every 1°C rise in ambient air temperature. As a result, the plant's total fuel consumption increases by up to 12.4% relative to the design conditions to maintain the 100% power and water load. At the average summer conditions, integrating EC and AR systems increases the energy utilization factor of the plant by 5.89% and 9.11%, respectively. The plant's overall exergetic efficiency also increases by 5.96% and 6.73%, respectively. While EC systems increase the plant's annual in-house water consumption by 32.4%, the annual total freshwater exports reduce by 0.151% only. Payback periods were calculated to be 1.84 and 5.70 years when integrating EC and AR systems, respectively and emissions savings ranged from 139 to 187 million kg of CO2 annually." @default.
- W3135279414 created "2021-03-15" @default.
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- W3135279414 date "2021-03-01" @default.
- W3135279414 modified "2023-10-13" @default.
- W3135279414 title "Performance improvement of cogeneration plants in hot arid regions via sustainable turbine inlet air cooling technologies: An energy‐water nexus comparative case study" @default.
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- W3135279414 doi "https://doi.org/10.1002/er.6561" @default.
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