Modeling and analysis of process configurations for hybrid concentrated solar power and conventional steam power plants

Suojanen, Suvi; Hakkarainen, Elina; Tähtinen, Matti; Sihvonen, Teemu

doi:10.1016/j.enconman.2016.12.029

Cited by 48 publications

(8 citation statements)

References 30 publications

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“…. Although great progress has been achieved during the past several years, in the most cases the reported solar steam generators such as nanoporous polymers, films, or floating particles have suffered from drawbacks such as high production cost, difficult scale‐up, or complicated manufacturing processes, respectively, which dramatically hinder their practical large‐scale application . High conversion efficiency of solar steam generators (>80 %) typically can only be achieved under concentrated sunlight (i.e., irradiation under 10 kW m −2 ), which increases the system cost by requiring optical concentrators and entails additional manufacturing complications, thus rendering them impractical for real usage.…”

Section: Figuresupporting

confidence: 80%

“…[26,27] .A lthoughg reat progress has been achievedd uring the past several years, [12,28,29] in the most cases the reporteds olar steam generators such as nanoporous polymers, films, or floating particles have suffered from drawbackss uch as high production cost, difficult scale-up, or complicated manufacturing processes, respectively,w hich dramatically hindert heir practical largescale application. [30][31][32][33][34] High conversion efficiency of solar steam generators (> 80 %) typically can only be achieved under concentrated sunlight (i.e.,i rradiation under 10 kW m À2 ), which increasest he system cost by requiring opticalc oncentrators and entails additional manufacturing complications, thus rendering them impractical for real usage. Consequently,i ti sh ighly challenging but also extremelyd esirable to develop al ow-cost, high-performance light-to-heatc onversion material with a simple ands calablem anufacturing process for constructiono f efficient solar steam generators.In our previous work, we reportedn anotubular porous polymer aerogels as photothermal materials for efficient solar steam generation.…”

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confidence: 99%

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Facile and Scalable Fabrication of Surface‐Modified Sponge for Efficient Solar Steam Generation

Zhang

et al. 2019

ChemSusChem

124

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Solar steam generation is a highly promising technology for harvesting solar energy and desalination. Here, a new solar steam generation system is introduced based on a surface‐modified polyurethane sponge with bilayered structures for efficient solar steam generation. The top layer, coated with polydimethylsiloxane‐modified graphite powder, serves as light‐to‐heat conversion layer with a broad optical absorption, whereas the lower part of the sponge acts as a thermal insulator with a low thermal conductivity in the wet state (0.13882 W m−1 K−1). In addition, the strong hydrophobic wettability of the top layer (water contact angle: 148°) enables self‐floating behavior on water, which is beneficial for practical applications. The results show that compared with a silver‐nanoparticle‐doped sponge and an acid‐etched sponge doped with silver nanoparticles the graphite‐modified sponge (GS) exhibits the highest evaporation efficiency of 73.3 % under 1 kW m2 irradiation, which is 2.6 times that of pure water and far higher than that of untreated polyurethane sponge (36.0 %). The GS shows excellent stability, and its evaporation efficiency remains unchanged even after immersion in water for one month. Based on its cost‐efficient, simple, and scalable manufacturing process, excellent mechanical stability, and high recyclability, the GS shows great potential as an efficient photothermal material for a wide range of large‐scale applications such as solar steam generation, light absorption, heat localization, and seawater desalination.

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Section: Figuresupporting

confidence: 80%

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confidence: 99%

Facile and Scalable Fabrication of Surface‐Modified Sponge for Efficient Solar Steam Generation

Zhang

et al. 2019

ChemSusChem

124

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“…Despite these successful developments, challenges remain in achieving all of these three features simultaneously . Moreover, most of the existing steam‐generation materials need expensive precursors, complicated fabrication processes, and are not scalable, which have inhibited their practical applications with accessible scalability and cost in the real world (considering the fact that most water shortage occurs in the developing countries) . In this context, it is highly challenging but also extremely desirable to develop a low‐cost, scalable material that simultaneously optimizes water transpiration, thermal management, and light absorption for efficient and large‐scale solar steam generation and water purification.…”

Section: Introductionmentioning

confidence: 99%

High‐Performance Solar Steam Device with Layered Channels: Artificial Tree with a Reversed Design

Liu

Chen

et al. 2017

Advanced Energy Materials

284

214

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Solar steam generation, combining the most abundant resources of solar energy and unpurified water, has been regarded as one of the most promising techniques for water purification. Here, an artificial tree with a reverse‐tree design is demonstrated as a cost‐effective, scalable yet highly efficient steam‐generation device. The reverse‐tree design implies that the wood is placed on the water with the tree‐growth direction parallel to the water surface; accordingly, water is transported in a direction perpendicular to what occurs in natural tree. The artificial tree is fabricated by cutting the natural tree along the longitudinal direction followed by surface carbonization (called as C‐L‐Wood). The nature‐made 3D interconnected micro‐/nanochannels enable efficient water transpiration, while the layered channels block the heat effectively. A much lower thermal conductivity (0.11 W m−1 K−1) thus can be achieved, only 1/3 of that of the horizontally cut wood. Meanwhile, the carbonized surface can absorb almost all the incident light. The simultaneous optimizations of water transpiration, thermal management, and light absorption results in a high efficiency of 89% at 10 kW m−2, among the highest values in literature. Such wood‐based high‐performance, cost‐effective, scalable steam‐generation device can provide an attractive solution to the pressing global clean water shortage problem.

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“…In SACFPP, solar energy can be integrated into the CFPP by heating feedwater [4,5], condensate water [6], or steam [7]. Many in-depth studies have been conducted on the SACFPP system design, optimization and off-design performance in energy and exergy aspects.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Performance and CO2 Emission Characteristics of Solar-Aided Coal-Fired Power Plant under Off-design Conditions

Yan,

Wang,

Wang

et al. 2024

Preprint

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Solar-aided coal-fired power plant (SACFPP) is cost-effective to ensure energy security with less CO2 emission than coal-fired power plant. Its efficient and low-carbon operation is important but difficult because of the time-varying solar energy. This paper evaluates the thermodynamic performance and CO2 emission characteristics of SACFPP under off-design conditions. Three SACFPP configurations (marked as HP123, HP23 and HP3) were analyzed and the optimized operation strategy is proposed to achieve highest solar-to-power efficiency and lowest CO2 emission rate through adjusting feedwater ratio to trough collector system. The best achievable solar-to-power efficiency and CO2 emission rate depend on the power load, DNI, system safety limitation and system configuration. The annual CO2 emission reductions of the 600 MW SACFPP are about 61352.2, 54009.9 and 51769.8 tonnes under configurations of HP123, HP23 and HP3, respectively. The results can guide the SACFPP operation optimization.

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Modeling and analysis of process configurations for hybrid concentrated solar power and conventional steam power plants

Cited by 48 publications

References 30 publications

Facile and Scalable Fabrication of Surface‐Modified Sponge for Efficient Solar Steam Generation

Facile and Scalable Fabrication of Surface‐Modified Sponge for Efficient Solar Steam Generation

High‐Performance Solar Steam Device with Layered Channels: Artificial Tree with a Reversed Design

Thermodynamic Performance and CO2 Emission Characteristics of Solar-Aided Coal-Fired Power Plant under Off-design Conditions

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