Parametric study of mult-effect desalination with thermal vapour compression plant

Eshoul, Nuri Mohamed; Agnew, Brian; Mnider, Abdalbaset M.

doi:10.1109/irec.2016.7478864

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…A detailed first and second law analysis of the MED-TVC process showed that the process is insensitive to concentration factor, rather a higher value of compression ratio should be maintained in the compressor for reduction of exergy destruction [44]. Analysis by Esfahani et al [45] and Eshoul et al [46] confirmed that a higher number of effects in the MED process may result in higher gained output ratio and lower product exergy costs. Attributing to irreversibilities in thermo-compressor and evaporators, a study on a 4-stage 46,000 m 3 /day capacity plant reported an exergy efficiency of 3.95% [45].…”

Section: Med-tvc Processmentioning

confidence: 96%

“…Attributing to irreversibilities in thermo-compressor and evaporators, a study on a 4-stage 46,000 m 3 /day capacity plant reported an exergy efficiency of 3.95% [45]. Using specialized software, a comprehensive study on a 24,000 m 3 /day capacity plant has shown that 40% and 35% exergy destruction have occurred in thermos-compressor and MED evaporator effects, respectively [46]. Another study focusing on optimization of a pilot MED plant process parameters based on energy and exergy performance criteria has revealed that high thermal energy consumption (i.e., utilization) is due to the discharged mass outflows while entropy generation and the environmental losses are the causes for exergy destruction [47].…”

Section: Med-tvc Processmentioning

confidence: 99%

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Exergy Evaluation of Desalination Processes

Gude

2018

ChemEngineering

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Desalination of sea or brackish water sources to provide clean water supplies has now become a feasible option around the world. Escalating global populations have caused the surge of desalination applications. Desalination processes are energy intensive which results in a significant energy portfolio and associated environmental pollution for many communities. Both electrical and heat energy required for desalination processes have been reduced significantly over the recent years. However, the energy demands are still high and are expected to grow sharply with increasing population. Desalination technologies utilize various forms of energy to produce freshwater. While the process efficiency can be reported by the first law of thermodynamic analysis, this is not a true measure of the process performance as it does not account for all losses of energy. Accordingly, the second law of thermodynamics has been more useful to evaluate the performance of desalination systems. The second law of thermodynamics (exergy analysis) accounts for the available forms of energy in the process streams and energy sources with a reference environment and identifies the major losses of exergy destruction. This aids in developing efficient desalination processes by eliminating the hidden losses. This paper elaborates on exergy analysis of desalination processes to evaluate the thermodynamic efficiency of major components and process streams and identifies suitable operating conditions to minimize exergy destruction. Well-established MSF, MED, MED-TVC, RO, solar distillation, and membrane distillation technologies were discussed with case studies to illustrate the exergy performances.

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Section: Med-tvc Processmentioning

confidence: 96%

Section: Med-tvc Processmentioning

confidence: 99%

Exergy Evaluation of Desalination Processes

Gude

2018

ChemEngineering

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An experimental study of the effect of exfoliated graphite solar coating with a sensible heat storage and Scheffler dish for desalination

Chandrashekara

Yadav

2017

Applied Thermal Engineering

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Unifying Efficiency Metrics for Solar Evaporation and Thermal Desalination

Fattahi Juybari,

Parmar,

Rezaei

et al. 2024

ACS Energy Lett.

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Worsening water crises and climate change drive the need for solar evaporation and thermal desalination. Yet, diverse performance metrics, siloed communities, and a research shift away from high-efficiency technologies pose challenges to their advancement. We present a thermodynamic framework for unifying performance measurements across technologies, categorizing 17 leading performance metrics by their localor system-level application and by thermodynamics laws. These are then organized into four categories of conceptually equivalent "sister" metrics. We clarify their best applications and measurement methods, detailing old and new conversion techniques using the temperature, recovery ratio, and salinity. Additionally, we compare six leading solar evaporation and thermal desalination technologies, identifying their second law efficiency and the specific exergy consumption. Furthermore, we reveal the unifying role of least work for solar desalination and steam generators and identify that many first law metrics become identical in these processes. Additionally, we create contour plots that link the energy efficiency metrics, recovery ratio, salinity, and temperature across a wider range than previously modeled, providing intuitive and easy comparisons and efficiency calculations. These findings contribute to enhancing comparisons and expediting optimal technology development.

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Parametric study of mult-effect desalination with thermal vapour compression plant

Cited by 4 publications

References 3 publications

Exergy Evaluation of Desalination Processes

Exergy Evaluation of Desalination Processes

An experimental study of the effect of exfoliated graphite solar coating with a sensible heat storage and Scheffler dish for desalination

Unifying Efficiency Metrics for Solar Evaporation and Thermal Desalination

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