Computational analysis for a multi-effect distillation (MED) plant driven by solar energy in Chile

Saldivia, David; Rosales, Carlos; Barraza, Rodrigo; Cornejo, Lorena

doi:10.1016/j.renene.2018.07.139

Cited by 47 publications

(19 citation statements)

References 33 publications

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“…Desde 2014, lo usuarios conectados a la red han podido vender los excedentes de cogeneración si su capacidad no supera los 100 kW. Adicionalmente, los proyectos de ER poseen una exención del 100 % de los impuestos sobre la transmisión si generan menos de 9 MW, y tienen una exención parcial si generan entre 9 y 20 MW (Saldivia et al, 2019). En Chile desincentivan el uso de combustibles fósiles mediante un impuesto al carbón que consiste en USD$ 5 a las emisiones de CO 2 , aplicada a la generación térmica con una entrada de 50 MW, exceptuando la biomasa.…”

Section: Chileunclassified

Análisis de los incentivos económicos en la capacidad instalada de energía solar fotovoltaica en Colombia

Castaño-Gómez

Rendón

2020

Lect. Econ.

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Debido a la caída abrupta a nivel mundial del costo nivelado de las tecnologías renovables no convencionales para la generación de energía con estas fuentes (en el caso de los mercados en Estados Unidos entre 39 y 152 USD/MWh para la energía solar fotovoltaica y entre 26 y 50 USD/MWh para la eólica), se ha sustituido la utilización de mecanismos como las Feed in Tariff por las subastas, como un mecanismo de mercado viable para incentivar la inversión en estas fuentes de generación. Por medio del modelo de difusión tecnológica de Bass, este artículo analiza el impacto que tienen los incentivos actuales, contemplados en la Ley 1715 de 2014, en la inversión en energía solar fotovoltaica en Colombia. Los principales resultados arrojados por el escenario de un proyecto a gran escala muestran una capacidad instalada de energía solar fotovoltaica de 1.542 MW en 2030, lo que lo hace el más rentable y el de mayor potencial de crecimiento. El aporte del artículo es examinar el potencial que tiene el mercado eléctrico colombiano respecto a la inclusión de energía solar fotovoltaica.

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Section: Chileunclassified

Análisis de los incentivos económicos en la capacidad instalada de energía solar fotovoltaica en Colombia

Castaño-Gómez

Rendón

2020

Lect. Econ.

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“…Thermal desalination processes, especially those combined with power generation cycles, constitute a considerable share of the global desalination market; in the Persian Gulf region, for example, thermal processes account for 70% of the desalination industry [18]. Among the different types of thermal desalination systems, MED units have several advantages: 1. exploitation of low-grade energy sources such as solar energy, geothermal energy, and waste energy [19], and 2. straightforward integration of MED units into energy systems [20]. Hence, a promising application for heat recovery is with thermal desalination systems, especially MED units.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a New Electricity and Freshwater Production System Based on an Integrated Gasification Combined Cycle and Multi-Effect Desalination

et al. 2020

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Integrated biomass gasification combined cycles can be advantageous for providing multiple products simultaneously. A new electricity and freshwater generation system is proposed based on the integrated gasification and gas turbine cycle as the main system, and a steam Rankine cycle and multi-effect desalination system as the waste heat recovery units. To evaluate the performance of the system, energy, exergy, and economic analyses were performed. Also, a parametric analysis was performed to assess the effects of various parameters on the system’s performance criteria. The economic feasibility of the plant was analyzed in terms of net present value. For the base case, the performance metrics are evaluated as Wnet=8.347 MW, ε=46.22%, SUCP=14.07 $/GJ, and mfw=11.7 kg/s. Among all components of the system, the combustion chamber is the greatest contributor to the exergy destruction rate, at 3250 kW. It is shown with the parametric analysis that raising the combustion temperature leads to higher electricity and freshwater production capacity. For a fuel cost of 2 $/GJ and an electricity price of 0.07 $/kWh, the total net present value at the end of plant’s lifespan is 6.547×106 $, and the payback period is 6.75 years. Thus, the plant is feasible from an economic perspective.

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“…Saldivia et al [9] studied a desalination system made up of a MED plant, a solar generation plant with parabolic collectors, a storage tank, and a steam generator. They analyzed the coupling between the solar generation plant and the MED.…”

Section: Introductionmentioning

confidence: 99%

“…They analyzed the coupling between the solar generation plant and the MED. The implications for their joint behavior on the performance of the whole system were analyzed through simulations based on hourly meteorological data [9]. They found that the external steam temperature and maximum allowed concentration of rejected brine were the key parameters.…”

Section: Introductionmentioning

confidence: 99%

Small-Scale Desalination Plant Driven by Solar Energy for Isolated Communities

et al. 2020

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In the last years, an increasing number of countries has been affected by water shortage. Seawater desalination driven by solar energy, which is usually available in arid regions, might be a solution to satisfy the freshwater demand. In this study, the feasibility of a stand-alone multi-effect desalination (MED) plant driven by solar energy for an isolated community was studied. The system was made up of a solar field, a MED unit, and a thermal storage that mitigated solar energy fluctuations. Simulations with different top brine temperature and inclination and number of the solar panels were carried out in Matlab and Aspen Plus on an hourly basis by considering one typical meteorological year for ambient temperature and solar radiation. Two different sources of electrical energy were considered: A photovoltaic (PV) field and a diesel generator. The results were compared from an energetic and economic point of view, by considering the adoption of plastic as a material for MED heat exchangers. The maximum water production was obtained with December as the design month. Polytetrafluoroethylene heat exchangers allowed the cost of water to be reduced up to 9.5% compared to conventional exchangers. The lowest cost of water (7.09 $/m3) was obtained with September as the design month and a tilt angle of 45° with the PV field as the electrical power source.

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Computational analysis for a multi-effect distillation (MED) plant driven by solar energy in Chile

Cited by 47 publications

References 33 publications

Análisis de los incentivos económicos en la capacidad instalada de energía solar fotovoltaica en Colombia

Análisis de los incentivos económicos en la capacidad instalada de energía solar fotovoltaica en Colombia

Performance Analysis of a New Electricity and Freshwater Production System Based on an Integrated Gasification Combined Cycle and Multi-Effect Desalination

Small-Scale Desalination Plant Driven by Solar Energy for Isolated Communities

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