Techno-economic optimization of coupling a cascaded MED system to a CSP-sCO2 power plant

Omar, Amr; Saldivia, David; Li, Qiyuan; Barraza, Rodrigo; Taylor, Robert A.

doi:10.1016/j.enconman.2021.114725

Cited by 18 publications

(4 citation statements)

References 29 publications

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“…Omar et al [54] presented an interesting analysis of the CSP plant with the sCO 2 -MED combination. The origin of their approach is the inability to use more than 25% of the total waste heat rejected by the cycle with the MED plant in previously proposed designs.…”

Section: Solar Sco 2 Power Cycle and Desalinationmentioning

confidence: 99%

“…The coupling of thermal desalination and solar power cycles based on sCO 2 has a lower effect on the cycle efficiency than that of solar ORCs. Innovative configurations of MED plants, such as those proposed by Omar et al [54] and Sharan et al [56], have significant market prospects as cost-effective solutions. However, Sharan et al [56] reported on maximum freshwater production of about 2500 m 3 /d in a solar sCO 2 plant of 115 MW of net power output.…”

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confidence: 99%

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Solar Desalination Driven by Organic Rankine Cycles (Orc) and Supercritical CO2 Power Cycles: An Update

Delgado-Torres

Garcı́a-Rodrı́guez

2022

Processes

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In the field of desalination powered by renewable energies, the use of solar power cycles exhibits some favorable characteristics, such as the possibility of implementing thermal energy storage systems or a multi-generation scheme (e.g., electricity, water, cooling, hydrogen). This article presents a review of the latest design proposals in which two power cycles of great potential are considered: the organic Rankine cycle and the supercritical CO2 power cycle, the latter of growing interest in recent years. The designs found in the literature are grouped into three main types of systems. In the case of solar ORC-based systems, the option of reverse osmosis as a desalination technology is considered in medium-temperature solar systems with storage but also with low-temperature using solar ponds. In the first case, it is also common to incorporate single-effect absorption systems for cooling production. The use of thermal desalination processes is also found in many proposals based on solar ORC. In this case, the usual configuration implies the cycle’s cooling by the own desalination process. This option is also common in systems based on the supercritical CO2 power cycle where MED technology is usually selected. Designs proposals are reviewed and assessed to point out design recommendations.

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Section: Solar Sco 2 Power Cycle and Desalinationmentioning

confidence: 99%

mentioning

confidence: 99%

Solar Desalination Driven by Organic Rankine Cycles (Orc) and Supercritical CO2 Power Cycles: An Update

Delgado-Torres

Garcı́a-Rodrı́guez

2022

Processes

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“…Using the five-effect distillation system, the freshwater results indicated that the rate is 459 m 3 /day. Realizing that the heat dissipating from an CSP-sCO2 can be used for free but with slightly reduced thermal efficiency, Omar et al [11] invented a new ISRR based on CSP, a CO2 cycle, and Cascade MED system. The results indicated that four-MED systems can maximize freshwater production, with 57% dissipating heat energy recovery compared to 26% waste heat recovery using a single-MED system.…”

Section: Introductionmentioning

confidence: 99%

A Triple Solar Desalination System Integrated with a Biomass Fuelled SCO2 Power Cycle: Thermodynamic Modelling

Ghiasirad,

Gholizadeh Baris,

Rostami

et al. 2023

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 20

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Numerous methods are invented to capture the dissipating heat from different sectors, among all, the combination of power generation and fresh water units in the form of integrated systems based on renewable energy has received less attention. In traditional systems, not only was energy wasted to the environment, but fossil fuels caused serious damage to the environment. To overcome this problem, a new solar-biomass driven integrated system is devised in this investigation. Instead of wasting the energy of sCO2 into the environment, a novel system is proposed to increase EUF. Meanwhile, the use of HDH-TVC-RO along with the MED unit increases the amount of freshwater rate. The results indicated that the fresh water rate, GOR, and EUF are 29.36 kg/s, 14.38, and 3.372, respectively. Hence, the total GOR of the devised system is constant with the alteration of input vapor pressure to HDH-TVC; in contrast, the total GOR is increased with the increase of the pressure ratio of compressors. In addition, the behaviour of the EUF is linear in the presence of alteration of both parameters of input vapor pressure parameters to HDH-TVC and the pressure ratio of compressors.

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“…Although many researchers investigated desalination with the distribution via pipelines, very limited literature focuses on the use of renewable energy for these operations. [14][15][16][17][18] For a self-sufficient and sustainable water supply, renewable energy plays a significantly important role. Furthermore, green ammonia originally included productions of freshwater and electricity based on renewable energy.…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Assessment of CO2 emission from Multigeneration of Water-Electricity-Ammonia Scheme using Sunlight in arid/semi-arid region and Seawater through Pipeline

Ogawa

Imamura

Yoshida

et al. 2022

Preprint

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Water, electricity, and ammonia (artificial fertilizer) are essential for human welfare. The self-sufficient and sustainable productions of them from renewable resources are indispensable for social security and the future society. In this study, we proposed the Water-Electricity-Ammonia (WEA) scheme that produces electricity, freshwater, and ammonia and supplies them at a certain ratio. We investigated the life cycle CO2 (LCCO2) emission from the case of inland cities in arid/semi-arid regions that obtain the three products (electricity, water, and ammonia) generated by photovoltaic (PV) and seawater obtained through a pipeline connecting the ocean and the cities. This study unraveled the necessary condition to reduce LCCO2 emission: the allocation ratio of PV electricity for the three productions and the geographical conditions of inland cities. To reduce LCCO2 emission, allocating PV power to seawater desalination is suitable if the city is in a lowland area, and ammonia synthesis is preferable if the city is in a highland area. Note that the WEA scheme applied to most inland cities, even in extreme geographical conditions, reduces LCCO2 emissions compared to conventional production methods by optimizing the PV allocation of electricity, freshwater, and ammonia production.

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Techno-economic optimization of coupling a cascaded MED system to a CSP-sCO2 power plant

Cited by 18 publications

References 29 publications

Solar Desalination Driven by Organic Rankine Cycles (Orc) and Supercritical CO2 Power Cycles: An Update

Solar Desalination Driven by Organic Rankine Cycles (Orc) and Supercritical CO2 Power Cycles: An Update

A Triple Solar Desalination System Integrated with a Biomass Fuelled SCO2 Power Cycle: Thermodynamic Modelling

Life Cycle Assessment of CO2 emission from Multigeneration of Water-Electricity-Ammonia Scheme using Sunlight in arid/semi-arid region and Seawater through Pipeline

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