Solar polygeneration for electricity production and desalination: Case studies in Venezuela and northern Chile

Mata-Torres, Carlos; Escobar, Rodrigo; Cardemil, José M.; Simsek, Yeliz; Matute, José A.

doi:10.1016/j.renene.2016.08.068

Cited by 86 publications

(23 citation statements)

References 20 publications

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“…The motor efficiency (η motor ) is selected at 80% in this work. The isentropic efficiency of the turbine (η is , T ) is selected at 85% [27] and its definition is given below. It has to be said that the selected value is a relatively high value and it corresponds to a well-designed expansion device in order to achieve high system efficiency.…”

Section: Organic Rankine Cycle Modelingmentioning

confidence: 99%

Financial Optimization of a Solar-Driven Organic Rankine Cycle

Bellos

Tzivanidis

2020

ASI

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The objective of this work is the financial optimization of a solar-driven organic Rankine cycle. Parabolic trough solar collectors are used as the most mature solar concentrating system and also there is a sensible storage system. The unit is examined for the location of Athens in Greece for operation during the year. The analysis is conducted with a developed dynamic model in the program language FORTRAN. Moreover, a developed thermodynamic model in Engineering Equation Solver has been used in order to determine the nominal efficiency of the cycle. The system is optimized with various financial criteria, as well as with energy criteria. The optimization variables are the collecting area and the storage tank volume, while the nominal power production is selected at 10 kW. According to the final results, the minimum payback period is 8.37 years and it is found for a 160 m2 collecting area and a 14 m3 storage tank, while for the same design point the levelized cost of electricity is minimized at 0.0969 € kWh−1. The maximum net present value is 123 k€ and it is found for a 220-m2 collecting area and a 14-m3 storage tank volume. Moreover, the maximum system energy efficiency is found at 15.38%, and, in this case, the collecting area is 140 m2 and the storage tank volume 12 m3. Lastly, a multi-objective optimization proved that the overall optimum case is for a 160-m2 collecting area and a 14-m3 storage tank.

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Section: Organic Rankine Cycle Modelingmentioning

confidence: 99%

Financial Optimization of a Solar-Driven Organic Rankine Cycle

Bellos

Tzivanidis

2020

ASI

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“…Water supplies in the semiarid and arid zones are intensified by the huge freshwater demand for industrial applications, especially in the mining industry [25]. Moreover, the number of desalination projects is expected to increase toward the south as a result of the accompanied climate change-driven displacement of the Atacama Desert [2]. The investigations conducted in this study demonstrate that about 88% of the projects in the Antofagasta and Atacama Regions have been submitted to SEIA, which include those approved or currently subjected to evaluation.…”

Section: Discussionmentioning

confidence: 99%

“…The continuous increase in global freshwater demand highlights the important role played by desalination to address water scarcity [1]. In Latin America, climate change poses critical challenges, among which water scarcity is one of the most important [2]. In Chile, which is highly affected by climate change [3,4], desalination of seawater using reverse osmosis has been proven to improve the social and economic sustainability of the country, because it can provide water for both human consumption and industrial activities.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Requirements within the Environmental Monitoring Plans Used to Evaluate the Environmental Impacts of Desalination Plants in Chile

Solà

Sánchez-Lizaso

Muñoz

et al. 2019

Water

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Seawater desalination represents an alternative solution to face the challenge of water scarcity in Chile. However, the uncertainty toward potential environmental impacts of desalination plants represent a barrier to achieving water sustainability and socioeconomic development in Chile. This study aimed to assess the quality of environmental monitoring plans (EMP) and determine the aspects to be improved within it, in order to enhance the management of desalination plants during the operation phase and guarantee a sustainable development of the activity. The Environmental Impact Assessments (EIAs) and Environmental Impact Studies for seawater desalination projects published in the Environmental Impact Evaluation System (SEIA) in Chile between 1997 and 2018 were reviewed. The results of the brine production from desalination plants showed a significant increase in the last decade (about 1.6 Mm3 per year estimated according to the projects approved or under implementation). The EMPs data show heterogeneity and increasing requirements over time, which can be attributed to the governmental effort to improve environmental protection. Furthermore, a high frequency of irrelevant descriptors was identified in the current EMPs. The study thus recommended standardizing the environmental requirements included in EMPs based on empiric scientific knowledge to enhance the environmental protection programs in Chile.

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“…In the case of Chile, the energy sector has been the leader in terms of national investment since 2015, mainly due to the new renewable capacity. In the next decade, the development of emerging technologies like electrical energy storage systems [33,34] or concentrating solar power [35] can have a profound impact on the electricity system, and their advantages for the whole country can only be used with an interconnection between the north and the south. Finally, there is a social benefit of an increasing concern of Chilean households on environmental issues, expressed in their support for the introduction of renewable energy sources by showing positive willingness to pay for it [36].…”

Section: Discussionmentioning

confidence: 99%

Electricity Interconnection in Chile: Prices versus Costs

Bustos-Salvagno

Fuentes

2017

Energies

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Having a well-adapted transmission network is key for reaching a sustainable energy system, where generators and consumers participate in an efficient market. The purpose of the present research is to estimate the impact on the final prices of the interconnection of the two largest electrical systems in Chile. To this end, an econometric model is used in which prices, among other variables, are explained by the level of marginal costs in the system (opportunity cost), the degree of concentration in the market (market power), and the variability of marginal costs projected by the agents (risk). The data corresponds to bilateral contracts between generators and major clients, from 2006 to 2014. The basic results indicate that the interconnection would benefit final customers by reducing equilibrium contract prices, as a result of the decreased variability of expected marginal costs and a lower concentration of existing generating companies. This study's main contribution is to focus on the benefits of electricity interconnection under conditions of competition and risk, instead of using the simple estimation of direct costs, as has traditionally been done.

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Solar polygeneration for electricity production and desalination: Case studies in Venezuela and northern Chile

Cited by 86 publications

References 20 publications

Financial Optimization of a Solar-Driven Organic Rankine Cycle

Financial Optimization of a Solar-Driven Organic Rankine Cycle

Assessment of the Requirements within the Environmental Monitoring Plans Used to Evaluate the Environmental Impacts of Desalination Plants in Chile

Electricity Interconnection in Chile: Prices versus Costs

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