Journal of Supercritical Fluids最新文献

Impact of inlet guide vane on performance and internal flow field of a supercritical CO2 centrifugal compressor 进口导叶对超临界CO2离心式压缩机性能及内部流场的影响

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-30 DOI: 10.1016/j.supflu.2025.106708

Yuguang Chen, Xudong Jiang, Zhiheng Wang, Guang Xi

{"title":"Impact of inlet guide vane on performance and internal flow field of a supercritical CO2 centrifugal compressor","authors":"Yuguang Chen, Xudong Jiang, Zhiheng Wang, Guang Xi","doi":"10.1016/j.supflu.2025.106708","DOIUrl":"10.1016/j.supflu.2025.106708","url":null,"abstract":"<div><div>In this study, an unsteady numerical simulation of supercritical carbon dioxide (SCO<sub>2</sub>) centrifugal compressors with inlet guide vanes (IGV) was conducted. First, using a condensable fluid model, the study validates the accuracy of property lookup tables generated by the FEK model against Lettieri’s SCO<sub>2</sub> Laval nozzle experimental data. Then, the internal flow fields under different IGV pre-swirl angles are analyzed. The results indicate that the IGV with zero pre-swirl angle induces minimal unsteady disturbances within the impeller, whereas the rotation of the impeller generates significant unsteady disturbances in the IGV. At a negative 30° pre-swirl angle, the compressor's peak efficiency decreases by approximately 5 %, accompanied by intense pressure pulsations and widespread phase transitions. Moreover, at a negative 30° pre-swirl angle, high-intensity pressure pulsations occur on the suction side of the IGV, triggering extensive phase transitions on both the suction side and at the outlet, covering the entire passage.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106708"},"PeriodicalIF":3.4,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144535646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Design and manufacturing of Z-shaped silicon carbide printed circuit board heat exchanger z型碳化硅印刷电路板换热器的设计与制造

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-30 DOI: 10.1016/j.supflu.2025.106709

Tao Zhu , Ming Xiang , Lihua Zhang , Shuanglong Zhang , Zhaoting Sun , Jinlong Zhang , Huadong Xing , Dedong Hu

引用次数: 0

Experimental study of phase-equilibrium properties of binary mixtures of supercritical solvents with the main component of asphaltene -resin- paraffin deposits for the preventing and removing inside oil wells 以沥青质-树脂-石蜡为主要成分的超临界溶剂二元混合物在油井内防除的相平衡特性实验研究

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-26 DOI: 10.1016/j.supflu.2025.106707

Ilnar Sh. Khabriev , Vener F. Khairutdinov , Talgat R. Akhmetzyanov , Ilgiz R. Gabitov , Fanis N. Shamsetdinov , Ilmutdin M. Abdulagatov

{"title":"Experimental study of phase-equilibrium properties of binary mixtures of supercritical solvents with the main component of asphaltene -resin- paraffin deposits for the preventing and removing inside oil wells","authors":"Ilnar Sh. Khabriev , Vener F. Khairutdinov , Talgat R. Akhmetzyanov , Ilgiz R. Gabitov , Fanis N. Shamsetdinov , Ilmutdin M. Abdulagatov","doi":"10.1016/j.supflu.2025.106707","DOIUrl":"10.1016/j.supflu.2025.106707","url":null,"abstract":"<div><div>The paper presents the results of the phase-equilibrium (VLE) study of the supercritical binary (<em>n</em>-butane/propane) mixture (as a supercritical solvent) with the main component (heavy <em>n</em>-alkane, <em>n</em>-tricosane, <em>n</em>-C<sub>23</sub>H<sub>48</sub>) of asphaltene-resin-paraffin (ARP) deposits. The isothermal VLE measurements were performed at three selected temperatures of (403.15, 423.15, and 443.15) K and at pressures of up to 7.3 MPa. The results have been used to study the process of cleaning oil wells of ARP deposits using a supercritical extraction process. The sample of ARP deposits was taken from the Orenburg oil field, characterized by a high content of paraffins (33.7 %), resins (30.55 %), and asphaltene (3.9 %). Heavy hydrocarbon extraction from ARP deposition was performed using a supercritical ready-to-use binary propane/<em>n</em>-butane mixture solvent in the temperature range of (398−433) K and at a pressure of (5−13) MPa. The kinetics of the propane/<em>n</em>-butane supercritical extraction process of hydrocarbons from ARP deposits under different thermodynamic conditions were studied. The present results can be used to prevent heavy oil component deposition in production oil wells.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106707"},"PeriodicalIF":3.4,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144515574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Numerical investigation on the carbonation of CaO particles in a supercritical CO2 fluidized bed reactor with immersed tubes 浸没管超临界CO2流化床反应器中CaO颗粒碳酸化的数值研究

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-23 DOI: 10.1016/j.supflu.2025.106703

Shaoxin Chen, Nan Zheng, Hanqing Liu, Jinjia Wei

{"title":"Numerical investigation on the carbonation of CaO particles in a supercritical CO2 fluidized bed reactor with immersed tubes","authors":"Shaoxin Chen, Nan Zheng, Hanqing Liu, Jinjia Wei","doi":"10.1016/j.supflu.2025.106703","DOIUrl":"10.1016/j.supflu.2025.106703","url":null,"abstract":"<div><div>The integration of calcium-looping thermochemical energy storage system with the supercritical carbon dioxide (SCO<sub>2</sub>) Brayton cycle offers a promising technical scheme to improve the energy conversion efficiency of the concentrated solar power plant. The carbonation reactor still faces challenges such as a serious decline in reactivity during multicycle carbonation-calcination reactions. In this study, a novel solution using sCO<sub>2</sub> as the fluidizing agent to improve the fluidization quality and avoid the agglomeration and sintering of CaO/CaCO<sub>3</sub> particles in a carbonation reactor is proposed. The effects of total gas pressure and CO<sub>2</sub> partial pressure on the fluidization quality, bed-to-tube heat transfer coefficient (HTC), and carbonation reaction are investigated by using the Eulerian−Eulerian two-fluid model. The results indicate that increasing the gas pressure above the CO<sub>2</sub> critical pressure leads to the particulate fluidization of Geldart B-type Ca-based particles. A more uniform distribution of local bed-to-tube HTC around the tube but with a reduced circumferential average HTC (by 45–119 W∙m<sup>−2</sup>∙K<sup>−1</sup>) is achieved when using sCO<sub>2</sub>. An increase of CO<sub>2</sub> partial pressure from 40 to 4000 kPa leads to a nearly 1000-fold increase in conversion rate, indicating that special designs are necessary to handle the potential over-temperature problem inside the supercritical pressure fluidized bed reactor.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106703"},"PeriodicalIF":3.4,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144491540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Solubility of insect fat in compressed CO2: Experiments and density- as well as activity-based modeling 昆虫脂肪在压缩CO2中的溶解度：实验和密度-以及基于活动的建模

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-20 DOI: 10.1016/j.supflu.2025.106705

Tom Goldberg, Volker Herdegen

{"title":"Solubility of insect fat in compressed CO2: Experiments and density- as well as activity-based modeling","authors":"Tom Goldberg, Volker Herdegen","doi":"10.1016/j.supflu.2025.106705","DOIUrl":"10.1016/j.supflu.2025.106705","url":null,"abstract":"<div><div>As an important basis for the design of economic extraction processes, the solubility of insect fat in compressed CO<sub>2</sub> was experimentally determined over a wide range of temperature (298–353 K) and pressure (15–60 MPa) using the gravimetric static-analytical method. The insect fat arises as a side-product from protein meal production from dried black soldier fly (<em>Hermetia illucens)</em> larvae<em>.</em> The solubility varied from 0.15 to 167 g<sub>fat</sub>/kg<sub>CO2</sub> depending on the operation conditions. The obtained solubility data were correlated using 8 common semi-empirical density-based models involving 3–5 fitting parameters. Based on the enhancement factor concept and thermodynamic considerations, an extended semi-empirical model is proposed, which gives the best goodness of fit with an <span><math><mi>AARD</mi></math></span> of 9.8 % despite the heterogeneity of the insect fat. An activity-based model (Expanded liquid theory) using a modified Wilson approach has also been considered, but did not lead to a better description of the solubility data with an <span><math><mi>AARD</mi></math></span> of 14.2 %.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106705"},"PeriodicalIF":3.4,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Comprehensive performance assessment of the supercritical CO2 PCHEs with different compactness 不同致密度超临界CO2 PCHEs的综合性能评价

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-20 DOI: 10.1016/j.supflu.2025.106704

Kai Zhang , Keyong Cheng , Xunfeng Li , Xiulan Huai , Cang Tong

{"title":"Comprehensive performance assessment of the supercritical CO2 PCHEs with different compactness","authors":"Kai Zhang , Keyong Cheng , Xunfeng Li , Xiulan Huai , Cang Tong","doi":"10.1016/j.supflu.2025.106704","DOIUrl":"10.1016/j.supflu.2025.106704","url":null,"abstract":"<div><div>To enhance the compactness of supercritical CO<sub>2</sub> Brayton cycle systems, this study proposes straight-type and asymmetric airfoil-type printed circuit heat exchangers with different compactness. Their thermal-hydraulic performance was numerically investigated and compared to a traditional straight-type exchanger with a compactness of 1250 m<sup>2</sup>/m<sup>3</sup>. Nusselt number and friction factor correlations were developed for Reynolds numbers between 4000 and 16000. Using these correlations, recuperators were designed and evaluated based on total cost. The results showed that under heating conditions, the asymmetric airfoil fin channel with a compactness of 5000 m<sup>2</sup>/m<sup>3</sup> exhibits the best heat transfer performance, while the straight channel with a compactness of 2500 m<sup>2</sup>/m<sup>3</sup> achieves optimal hydraulic performance. Increased compactness reduces recuperator volume but raises pressure drop. The straight channel with a compactness of 2500 m<sup>2</sup>/m<sup>3</sup> achieves the lowest total cost, whereas the asymmetric airfoil fin channel with a compactness of 5000 m<sup>2</sup>/m<sup>3</sup> results in the highest.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106704"},"PeriodicalIF":3.4,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Enhancing strength and CO₂ uptake in lignite-based fly ash geopolymer mortar through supercritical carbonation 通过超临界碳化提高褐煤基粉煤灰地聚合物砂浆的强度和CO 2吸收量

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-18 DOI: 10.1016/j.supflu.2025.106695

Tinkara Marija Podnar , Željko Knez , Gregor Kravanja

{"title":"Enhancing strength and CO₂ uptake in lignite-based fly ash geopolymer mortar through supercritical carbonation","authors":"Tinkara Marija Podnar , Željko Knez , Gregor Kravanja","doi":"10.1016/j.supflu.2025.106695","DOIUrl":"10.1016/j.supflu.2025.106695","url":null,"abstract":"<div><div>This study demonstrates the potential of supercritical CO₂ curing to enhance the performance and sustainability of lignite-based fly ash geopolymer mortar offering a promising approach to reducing CO₂ emissions in the construction industry while improving material properties. The research comprehensively compared conventional curing (GEO-REF) with supercritical CO₂ curing (GEO-CO₂), revealing that GEO-CO₂ samples exhibited higher compressive and flexural strengths, achieving peak performance almost immediately after curing. Supercritical CO₂ exposure resulted in enhanced carbonation, with a depth of up to 7.6 mm and a carbonation rate of up to 67 %. XRD confirmed phase changes due to CO₂ curing, with GEO-CO₂ showing additional calcium carbonate-calcite, calcium carbonate-aragonite, and calcium silicate hydroxide compared to GEO-REF. Nitrogen adsorption/desorption studies indicated larger pore diameters but a reduced BET surface area in GEO-CO₂ samples, suggesting structural changes due to CO₂ exposure. TGA analysis revealed that supercritical CO₂ curing reduced water retention and enhanced carbonation, resulting in increased CaCO₃ content and changes in Ca(OH)₂ levels.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106695"},"PeriodicalIF":3.4,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144329663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Supercritical CO2 extraction of bioactives from P. halepensis petals: Process modeling, mass transfer, and bioactivity characterization 从halepensis花瓣中提取生物活性的超临界CO2：过程建模、传质和生物活性表征

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-18 DOI: 10.1016/j.supflu.2025.106701

Amel Chammam , Irina Smirnova , Luc Fillaudeau , Mehrez Romdhane , Carsten Zetzl , Jalloul Bouajila

{"title":"Supercritical CO2 extraction of bioactives from P. halepensis petals: Process modeling, mass transfer, and bioactivity characterization","authors":"Amel Chammam , Irina Smirnova , Luc Fillaudeau , Mehrez Romdhane , Carsten Zetzl , Jalloul Bouajila","doi":"10.1016/j.supflu.2025.106701","DOIUrl":"10.1016/j.supflu.2025.106701","url":null,"abstract":"<div><div>The extraction of bioactive compounds from <em>P. halepensis</em> petals was carried out using supercritical carbon dioxide (Sc-CO<sub>2</sub>) under varying operational conditions, including extraction time, pressure (300–500 bar), co-solvent type (water or ethanol), and particle size (120–1400 µm), and compared to conventional techniques such as Soxhlet extraction and maceration. The results showed that Sc-CO<sub>2</sub> extraction at 300–500 bar achieves ∼80 % recovery of bioactive compounds within the first 30 min. Tan, Liang and Liou model successfully fitted the extraction kinetics. Furthermore, all extracts demonstrated moderate to high anticancer activity against LS174t and HCT116 cell lines compared to tamoxifen (a well-known anticancer standard). Extracts obtained by Sc-CO<sub>2</sub> with water as a co-solvent exhibited significant antioxidant activity against DPPH free radical; however, their antioxidant activities were notably lower than those obtained through conventional extraction methods. Finally, 38 molecules were identified by HPLC-DAD and 24 by GC-MS<em>.</em> The originality and novelty of this study are a) First-time application of Sc-CO<sub>2</sub> to extract bioactive compounds from <em>P. halepensis</em> petals; b) Identification of new chemical compounds (seven detected for the first time in this species) as a novel contribution.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106701"},"PeriodicalIF":3.4,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144329661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Extraction of high-quality sunflower seed oil with carbon-dioxide expanded hexane for biofuel use 用二氧化碳膨胀己烷萃取高品质葵花籽油用于生物燃料

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-18 DOI: 10.1016/j.supflu.2025.106702

Mapesa Kamisa Luhasile , Takeshi Sako , Haruka Sano , Yusuke Aoki , Mathayo Gervas Mathias , Idzumi Okajima

{"title":"Extraction of high-quality sunflower seed oil with carbon-dioxide expanded hexane for biofuel use","authors":"Mapesa Kamisa Luhasile , Takeshi Sako , Haruka Sano , Yusuke Aoki , Mathayo Gervas Mathias , Idzumi Okajima","doi":"10.1016/j.supflu.2025.106702","DOIUrl":"10.1016/j.supflu.2025.106702","url":null,"abstract":"<div><div>This study focuses on environmentally friendly technology for extracting sunflower seed oil utilizing CO<sub>2</sub>-expanded hexane (CXH). The extraction conditions are optimized using response surface method, featuring a central composite rotatable design, at a pressure range of (4.5–6.5) MPa, temperature range of (20−30) ℃, and CO<sub>2</sub> mole fraction range of 0.70–0.88. The optimal extraction conditions using CXH are a pressure of 5.0 MPa, temperature of 25 ℃, and CO<sub>2</sub> mole fraction of 0.82, yielding 0.379 g-oil/g-sample with free fatty acid and phosphorus concentrations of 1.91 wt% and 7.2 µL/L, respectively. The response surface method model equations enable calculation of the oil yield and phosphorus concentration with an error ≤ 9 %. Comparison of CXH and liquid hexane oil extraction reveals that CXH achieves higher oil yield in shorter extraction time and higher-quality sunflower seed oil suitable for biofuel, meeting European standards without requiring extensive refining.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106702"},"PeriodicalIF":3.4,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on data universality and machine learning for methane transcritical flow and heat transfer in PCHE channel with different boundary conditions 不同边界条件下PCHE通道甲烷跨临界流动与换热的数据普适性与机器学习研究

IF 3.4 3区工程技术

Journal of Supercritical Fluids Pub Date : 2025-06-16 DOI: 10.1016/j.supflu.2025.106700

Liu Yang , Rongmin Zhang , Guorong Zhang , Bin Zhao , Qian Li , Weihua Cai

引用次数: 0