Cost evaluation and optimisation of hybrid multi effect distillation and reverse osmosis system for seawater desalination

Al‐Obaidi, Mudhar A.; Filippini, G.; Manenti, Flavio; Mujtaba, Iqbal M.

doi:10.1016/j.desal.2019.01.019

Cited by 83 publications

(23 citation statements)

References 22 publications

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“…It is worth noting that determining the SHTA is necessary to assess the dimensions, and in turn, this aids to evaluate the construction costs of the desalination plant. 19 Finally, the freshwater production was similarly predicted by both competitive models with a very small deviation from the actual data.…”

Section: Model Validationmentioning

confidence: 76%

A parametric simulation on the effect of the rejected brine temperature on the performance of multieffect distillation with thermal vapour compression desalination process and its environmental impacts

Buabbas

Al‐Obaidi

Mujtaba

2020

Asia-Pacific J Chem Eng

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Multieffect distillation with thermal vapour compression (MED-TVC) is one of the most attractive thermal desalination technologies for the production of freshwater. Several mathematical models were presented in the open literature to analyse the steady-state performance of such process. However, these models have several limitations and assumptions. Therefore, there remains the challenge of having a reliable model to accurately predict the performance of the MED process. Thus, this research attempts to resolve this challenge by rectifying the shortcomings of the models found in the literature and create a new one. The robustness of the developed model is evaluated against the actual data of Umm Al-Nar commercial plant situated in UAE. In seawater desalinisation, a large amount of high-salinity stream (brine) is rejected back into the sea. This paper investigates the influence of the rejected (exit) brine temperature on the system performance parameters of MED-TVC process. Specifically, these parameters are considered as total heat consumption, gain output ratio, freshwater production, heat transfer area and performance ratio. Also, the particular parameters of TVC section of the entrainment ratio, compression ratio and expansion ratio are also addressed. Moreover, a critical evaluation of the influence of the rejected brine temperature on the seawater is also embedded.

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Section: Model Validationmentioning

confidence: 76%

A parametric simulation on the effect of the rejected brine temperature on the performance of multieffect distillation with thermal vapour compression desalination process and its environmental impacts

Buabbas

Al‐Obaidi

Mujtaba

2020

Asia-Pacific J Chem Eng

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“…The larger scales of the CWP plant might decrease the LCOE and LCOW of the system to the lower values. To consider the effect of the scale economy, the LCOE and LCOW of the three different configurations that is discussed earlier delivering the larger capacities using the following well known relationship [12]. where exponent 'n' was considered to be 0.82.…”

Section: Effects Of Plant Scalementioning

confidence: 99%

“…Results showed that placing the RO membrane process upstream in the hybrid system generates the overall best configuration in terms of the quantity and quality of produced fresh water. In a recent study by Al-Obaidi et al [12], an economic assessment and optimization of the best mentioned configuration [11] of the hybrid desalination systems were explored. Using the economic model, the variation of the overall fresh water cost with operating conditions, namely steam temperature and steam flow rate for the MED/TVC system and inlet pressure and flow rate of the RO system were investigated.…”

Section: Introductionmentioning

confidence: 99%

Techno-economic analysis of combined gas turbine, MED and RO desalination systems to produce electricity and drinkable water

Javadpour¹,

Javaran²,

Lari³

et al. 2019

Desalination and Water Treatment

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Water and power cogeneration systems have been received more attention in recent years. In the present research, in addition to techno-economic investigation of the integration of multiple effect desalination/thermal vapor compression (MED/TVC) system and reverse osmosis (RO) system into the gas turbine (GT) power cycle, the GT/MED-TVC/RO configuration is also proposed. At first, the models used for GT, MED-TVC and RO systems are validated with the experimental data in the literature and good correspondence is found. In this study, the effect of air temperature on the GT stack outlet gases and the effect of seawater temperature on the MED-TVC GOR are investigated. Moreover, using the RO energy analysis, the most suitable RO membrane is selected by considering the permeate quality and membrane price. Then, the LCOE and LCOW for three scenarios of GT/ MED-TVC with 5000 m 3 /d, GT/RO with 5000 m 3 /d, and GT/MED-TVC/RO with MED-TVC and RO water production rates of 2000 m 3 /d and 3000 m 3 /d, respectively are determined. The results of the economic analysis in three scenarios showed that the least electricity cost and the least freshwater production cost belong to GT/MED-TVC and GT/RO configurations, respectively. Furthermore, the effect of number of stages of the MED-TVC system on the energy and economy of the GT/MED-TVC/ RO configuration is explored. It was observed that increasing the number of effects from 4 to 7 has no tangible effect on the LCOE. In addition, the output temperature and concentration of GT/MED-TVC/RO plant at different number of MED-TVC effects is determined. Finally, the effect of fuel cost and desalination system scale on the LCOW and LCOE at three configurations are investigated.

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“…It is essential that the project planners and desalination engineers provide cost analysis regularly for this business cases (Al-Obaidi et al 2019 , La Cerva et al 2019 ). The cost of water production includes all spending associated with project implementation consists of fixed and variable components.…”

Section: Introductionmentioning

confidence: 99%

Evaluation for the optimization of two conceptual 200,000 m3/day capacity RO desalination plant with different intake seawater of Oman Sea and Caspian Sea

2021

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Iran has faced with water scarcity problem for a long time. There is a strong tendency to desalinate seawater from Oman or the Caspian Sea as intake seawater and transfer it to central parts of the country. These projects face significant technical, economic, and environmental challenges. In this work, utilizing available economic theories about single-stage reverse osmosis (RO) desalination plants, the cost analysis of a conceptual plant with a production capacity of 200,000 m3/day, was accomplished assuming the use of Oman and Caspian seawater as feed. The effect of important parameters such as applied pressure, recovery ratio, total salt content of the feed, and produced water and the temperature has been studied theoretically. The results show that under the same working conditions, the final product price per cubic meter of freshwater from the Caspian Sea is $ 0.69 versus $ 1.24 for the Oman Sea, which is about 50% cheaper. The lower salinity of the Caspian Sea compared to the Oman Sea is the main reason, which lead to reduce in the capital cost of the RO membrane (62% difference), cost of the intake and pretreatment (20%), and cost of membrane elements replacement (13%) regardless of water transfer cost.

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Cost evaluation and optimisation of hybrid multi effect distillation and reverse osmosis system for seawater desalination

Cited by 83 publications

References 22 publications

A parametric simulation on the effect of the rejected brine temperature on the performance of multieffect distillation with thermal vapour compression desalination process and its environmental impacts

A parametric simulation on the effect of the rejected brine temperature on the performance of multieffect distillation with thermal vapour compression desalination process and its environmental impacts

Techno-economic analysis of combined gas turbine, MED and RO desalination systems to produce electricity and drinkable water

Evaluation for the optimization of two conceptual 200,000 m3/day capacity RO desalination plant with different intake seawater of Oman Sea and Caspian Sea

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