Modeling water use demands for thermoelectric power plants with CCS in selected Brazilian water basins

Merschmann, Paulo Roberto de C.; Vasquez, Eveline; Szklo, Alexandre; Schaeffer, Roberto

doi:10.1016/j.ijggc.2012.12.019

Cited by 33 publications

(14 citation statements)

References 25 publications

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“…Some studies performed for Brazil indicated that some regions of the country would not support the higher water demand that carbon capture systems would eventually add to existing or planned coal fired plants (Hoffmann et al, 2014;Merschmann et al, 2013).…”

Section: Ccs and Bioccsmentioning

confidence: 99%

Climate policy scenarios in Brazil: A multi-model comparison for energy

et al. 2016

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a b s t r a c t Available online xxxx JEL classification: H23 C88 Q40 Q54 C61 C63 C68 O57 Keywords: Climate policy Low-carbon energy scenarios Mitigation alternatives BrazilThis paper assesses the effects of market-based mechanisms and carbon emission restrictions on the Brazilian energy system by comparing the results of six different energy-economic or integrated assessment models under different scenarios for carbon taxes and abatement targets up to 2050. Results show an increase over time in emissions in the baseline scenarios due, largely, to higher penetration of natural gas and coal. Climate policy scenarios, however, indicate that such a pathway can be avoided. While taxes up to 32 US$/tCO 2 e do not significantly reduce emissions, higher taxes (from 50 US$/tCO 2 e in 2020 to 162US$/tCO 2 e in 2050) induce average emission reductions around 60% when compared to the baseline. Emission constraint scenarios yield even lower reductions in most models. Emission reductions are mostly due to lower energy consumption, increased penetration of renewable energy (especially biomass and wind) and of carbon capture and storage technologies for fossil and/or biomass fuels. This paper also provides a discussion of specific issues related to mitigation alternatives in Brazil. The range of mitigation options resulting from the model runs generally falls within the limits found for specific energy sources in the country, although infrastructure investments and technology improvements are needed for the projected mitigation scenarios to achieve actual feasibility.

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Section: Ccs and Bioccsmentioning

confidence: 99%

Climate policy scenarios in Brazil: A multi-model comparison for energy

et al. 2016

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“…This cooling medium can be water as in wet cooling systems or air as in dry cooling systems [34]. Types of cooling systems considered in this study are once-through, closed loop cooling (cooling towers and cooling pond), and dry cooling [34][35][36]. In the U.S., nearly half (48%) the coal-fired power plants use wet re-circulating cooling systems; 39.1% use once-through systems, 0.2% use dry cooling systems, and 12.7% use cooling pond systems [37].…”

Section: Coal-powered Plant Cooling Systemsmentioning

confidence: 99%

Development of life cycle water-demand coefficients for coal-based power generation technologies

Ali

Kumar

2015

Energy Conversion and Management

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“…A solution with a greater potential to reduce CO 2 emissions is to capture and utilize or sequester the CO 2 emitted from fossil‐fuel power plants. Carbon capture and sequestration (CCS) is an emerging technology with extensive research and development efforts globally . Recently, CO 2 has received increasing attention as a potential working fluid in power generation cycles due to its superior heat transfer and thermodynamic characteristics .…”

Section: Introductionmentioning

confidence: 99%

“…Carbon capture and sequestration (CCS) is an emerging technology with extensive research and development efforts globally. 8,9 Recently, CO 2 has received increasing attention as a potential working fluid in power generation cycles due to its superior heat transfer and thermodynamic characteristics. [10][11][12] For power-generation systems, compared with other types of thermal cycle fluids, sCO 2 has a lower critical temperature and pressure and a lower gas viscosity.…”

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confidence: 99%

Performance analysis and optimization design of an axial-flow vane separator for supercritical CO₂ (sCO₂ )-water mixtures from geothermal reservoirs

et al. 2019

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Summary Supercritical CO2 (sCO2) has been proven to be a promising working fluid for geothermal heat mining, and the produced hot sCO2 can be directly used for power generation. However, the sCO2 produced from a brine‐based reservoir may contain a certain amount of water, preventing direct power‐cycle utilization. In this paper, an axial vane separator was designed to address the separation problem of sCO2 and water produced from geothermal reservoirs. First, the influences of operational and structural parameters on the separation performance were analyzed through numerical simulations. Five factors were selected to develop separation performance regression models by the response‐surface method (RSM). Finally, geometrical parameter optimization was applied to these RSM models. The results show that the guide vane area and the exhaust inlet are the main locations impacting the system pressure drop. The separation performance can be affected by many factors, including the guide blade outlet angle, number of vanes, hub diameter, length of the vortex tube, droplet size, and inlet velocity. The water‐droplet size and the number of vanes are the most critical factors affecting the separation efficiency. The inlet velocity, the number of vanes, and the hub diameter have a larger influence on the pressure drop of the separator. The optimization results indicate that the separation efficiency can reach 100% under certain operating conditions with a pressure drop no greater than 100 kPa.

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Modeling water use demands for thermoelectric power plants with CCS in selected Brazilian water basins

Cited by 33 publications

References 25 publications

Climate policy scenarios in Brazil: A multi-model comparison for energy

Climate policy scenarios in Brazil: A multi-model comparison for energy

Development of life cycle water-demand coefficients for coal-based power generation technologies

Performance analysis and optimization design of an axial-flow vane separator for supercritical CO₂ (sCO₂ )-water mixtures from geothermal reservoirs

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Modeling water use demands for thermoelectric power plants with CCS in selected Brazilian water basins

Cited by 33 publications

References 25 publications

Climate policy scenarios in Brazil: A multi-model comparison for energy

Climate policy scenarios in Brazil: A multi-model comparison for energy

Development of life cycle water-demand coefficients for coal-based power generation technologies

Performance analysis and optimization design of an axial-flow vane separator for supercritical CO2 (sCO2 )-water mixtures from geothermal reservoirs

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Product

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Performance analysis and optimization design of an axial-flow vane separator for supercritical CO₂ (sCO₂ )-water mixtures from geothermal reservoirs