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Journal articles on the topic 'Enhanced steam generation'

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Author: Grafiati

Published: 23 September 2022

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1

Ghafurian, Mohammad Mustafa, Hamid Niazmand, Ehsan Ebrahimnia-Bajestan, and Robert A. Taylor. "Wood surface treatment techniques for enhanced solar steam generation." Renewable Energy 146 (February 2020): 2308–15. http://dx.doi.org/10.1016/j.renene.2019.08.036.

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2

Wang, Yida, Xuan Wu, Bo Shao, Xiaofei Yang, Gary Owens, and Haolan Xu. "Boosting solar steam generation by structure enhanced energy management." Science Bulletin 65, no. 16 (August 2020): 1380–88. http://dx.doi.org/10.1016/j.scib.2020.04.036.

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3

Chaar, Marwan, Milton Venetos, Justin Dargin, and Daniel Palmer. "Economics Of Steam Generation For Thermal Enhanced Oil Recovery." Oil and Gas Facilities 4, no. 06 (December 1, 2015): 42–50. http://dx.doi.org/10.2118/172004-pa.

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4

Wang, Kongxiang, Jiaojiao Xing, Ankang Kan, Huaqing Xie, and Wei Yu. "Investigation of Enhanced Volumetric Solar Steam Generation by a Lower Concentration of ZrC Nanofluid." Nano 15, no. 03 (March 2020): 2050030. http://dx.doi.org/10.1142/s1793292020500307.

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Solar steam generation is an efficient photo thermal conversion method, which has a wide range of applications in water purification and desalination. With an increasing requirement for technological advancements, the low efficiency of the working media has become a hindrance. In this work, ZrC nanofluid, which has good stability and broad-band absorption capability, was prepared to enhance the volumetric solar steam generation. The effect of ZrC nanoparticle concentration, within a large volume, on a solar steam generation was experimentally studied. It has been found that due to the unique optical absorption characteristics of ZrC nanoparticles, an advantageous temperature gradient with hot irradiation surface layer is attained and the irradiation energy is mostly absorbed by the top surface layer to generate steam. This reduces heat dissipation and improves the evaporation efficiency of the working media. Enhanced solar steam generation by using ZrC nanofluid in the base fluid reduces evaporation costs and expands its applicability in commercial production.

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5

Liu, Xing, Xinzhi Wang, Jian Huang, Gong Cheng, and Yurong He. "Volumetric solar steam generation enhanced by reduced graphene oxide nanofluid." Applied Energy 220 (June 2018): 302–12. http://dx.doi.org/10.1016/j.apenergy.2018.03.097.

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6

Zou, Yuan, Peng Yang, Lu Yang, Ning Li, Gaigai Duan, Xianhu Liu, and Yiwen Li. "Boosting solar steam generation by photothermal enhanced polydopamine/wood composites." Polymer 217 (March 2021): 123464. http://dx.doi.org/10.1016/j.polymer.2021.123464.

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7

Jin, Xin, Guiping Lin, and Haichuan Jin. "Experimental Investigations on Steam Generation in Nanofluids under Concentrated Solar Radiation." Energies 14, no. 13 (July 2, 2021): 3985. http://dx.doi.org/10.3390/en14133985.

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Developing renewable energy, especially solar energy related, is of great importance for securing our future energy society. Steam generation in nanofluids based on solar radiation has been increasingly studied. It has been determined that the efficiency of steam generation is significantly enhanced when nanoparticles are seeded into the fluid owing to their unique radiative heat transfer performance. The nanoparticles trap solar energy inside the fluid and convert it into thermal form, which dramatically accelerates the steam generation process. In this study, we experimentally investigated different nanofluids that directly absorb solar energy to generate steam. Ag nanofluid, Au nanofluid and MWCNT nanofluid with different concentration have been carefully investigated. We analyzed the temperature increase and steam generation combined with the calculation of the efficiency factor from radiative heat transfer. The heating power and steam generation power of different nanofluids and the same nanofluid with different concentrations were compared. For Au nanofluid with concentration of 0.5 wt‰, the absorbed solar energy for heating the volume and generating steam is 6 and 40 times higher than those of pure water, respectively. We concluded that localized boiling generates steam rapidly in nanofluids based on the observation of three types of nanofluids. Furthermore, the heating power and steam generation power of different nanofluids increase with concentration. Moreover, the difference between the efficiency factors results in varied volume heating and steam generation efficiencies for different nanofluids despite identical concentrations.

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8

Cheng, Gong, Xinzhi Wang, Xing Liu, Yurong He, and Boris V. Balakin. "Enhanced interfacial solar steam generation with composite reduced graphene oxide membrane." Solar Energy 194 (December 2019): 415–30. http://dx.doi.org/10.1016/j.solener.2019.10.065.

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9

Aziznezhad, Mohammad, Elaheh K. Goharshadi, Roya Mehrkhah, and Mohammad Mustafa Ghafurian. "Alkaline earth metals doped VO2 nanoparticles for enhanced interfacial solar steam generation." Materials Research Bulletin 149 (May 2022): 111705. http://dx.doi.org/10.1016/j.materresbull.2021.111705.

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10

Soo Joo, Beom, In Soo Kim, Il Ki Han, Hyungduk Ko, Jin Gu Kang, and Gumin Kang. "Plasmonic silicon nanowires for enhanced heat localization and interfacial solar steam generation." Applied Surface Science 583 (May 2022): 152563. http://dx.doi.org/10.1016/j.apsusc.2022.152563.

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11

Zhang, Wentao, Wenxin Zhu, Shuo Shi, Na Hu, Yourui Suo, and Jianlong Wang. "Bioinspired foam with large 3D macropores for efficient solar steam generation." Journal of Materials Chemistry A 6, no. 33 (2018): 16220–27. http://dx.doi.org/10.1039/c8ta04296a.

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A bioinspired “nano-fixation” strategy is proposed to prepare functional foams with large 3D macropores, showing enhanced performance for solar steam generation. Besides, the novel nano-fixation principle shows good universality in guiding the preparation of other functional foams and would find a variety of applications.

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12

Ayeleso, Ayokunle Oluwaseun, and Atanda Kamoru Raji. "An Enhanced Solar Hybrid Brayton and Rankine Cycles with Integrated Magnetohydrodynamic Conversion System for Electrical Power Generation." International Journal of Renewable Energy Development 10, no. 4 (May 8, 2021): 755–67. http://dx.doi.org/10.14710/ijred.2021.34927.

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In many developing countries,the use of conventional power plants to generate electricity is not meeting the increasing demands. Therefore, it has become important to find sustainable alternatives. In the present study, a solar hybrid combined cycle power plant consisting of a solar thermal plant, large-scale gas and steam turbines, and a magnetohydrodynamic generator has been investigated under oxy-fuel combustion. The performance analysis of this system under fuel pressure rate varying from 10 to 25 bar was conducted using Cycle Tempo software. The analysis of the gas and steam combined cycle shows that the net powers and the net efficiencies obtained ranged from 98 MWe to 134 MWe and 30.5% to 40%, respectively. In addition, the integration of the magnetohydrodynamic generator to the combined cycle led to an increase in the overall power from 169 MWe to 205 MWe. Moreover, it is seen that the fuel mass rate (2.81 kg/s) obtained in the gas turbine system under oxy-fuel combustion is significantly reduced when compared to conventional systems. The incorporation of solar energy and oxy-fuel combustion in the gas turbine system has increased the combustor inlet and outlet temperature and reduced the fuel consumption. From these observations, the solar hybrid system proposed in this study does not only generates electric power but also reduce the turbine exhaust fumes and CO2 emissions, which is a key factor in minimizing environment pollution.

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13

Xu, Chao, and Haibo Li. "Engineering of porous graphene oxide membranes for solar steam generation with improved efficiency." Environmental Science: Water Research & Technology 8, no. 2 (2022): 249–56. http://dx.doi.org/10.1039/d1ew00583a.

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14

Hong, Yong-Cheol, Taihyeop Lho, Bong-Ju Lee, and Han-Sup Uhm. "Development of Steam Plasma-Enhanced Coal Gasifier and Future Plan for Poly-Generation." Journal of the Korean institute of surface engineering 42, no. 3 (June 30, 2009): 139–44. http://dx.doi.org/10.5695/jkise.2009.42.3.139.

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15

Miao, En-Dong, Meng-Qi Ye, Cheng-Long Guo, Lin Liang, Qi Liu, and Zhong-Hao Rao. "Enhanced solar steam generation using carbon nanotube membrane distillation device with heat localization." Applied Thermal Engineering 149 (February 2019): 1255–64. http://dx.doi.org/10.1016/j.applthermaleng.2018.12.123.

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16

Zhang, Rong, Yuewei Zhou, Bo Xiang, Xujia Zeng, Yanlong Luo, Xiangkang Meng, and Shaochun Tang. "Scalable Carbon Black Enhanced Nanofiber Network Films for High‐Efficiency Solar Steam Generation." Advanced Materials Interfaces 8, no. 24 (November 12, 2021): 2101160. http://dx.doi.org/10.1002/admi.202101160.

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17

Gao, Lan, Elyes Nefzaoui, Frédéric Marty, Xueyong Wei, Stéphane Bastide, Yamin Leprince-Wang, and Tarik Bourouina. "Two-dimensional metamaterials as meta-foams for optimized surface-enhanced solar steam generation." Solar Energy Materials and Solar Cells 243 (August 2022): 111793. http://dx.doi.org/10.1016/j.solmat.2022.111793.

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18

Zhang, Chaofan, Baohua Yuan, Ying Liang, Lixia Yang, Liangjiu Bai, Huawei Yang, Donglei Wei, et al. "Carbon nanofibers enhanced solar steam generation device based on loofah biomass for water purification." Materials Chemistry and Physics 258 (January 2021): 123998. http://dx.doi.org/10.1016/j.matchemphys.2020.123998.

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19

He, Jingxian, Yukang Fan, Chaohu Xiao, Fang Liu, Hanxue Sun, Zhaoqi Zhu, Weidong Liang, and An Li. "Enhanced solar steam generation of hydrogel composite with aligned channel and shape memory behavior." Composites Science and Technology 204 (March 2021): 108633. http://dx.doi.org/10.1016/j.compscitech.2020.108633.

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20

Fayazi, Amir, and Apostolos Kantzas. "A review on steam-solvent processes for enhanced heavy oil/bitumen recovery." Reviews in Chemical Engineering 35, no. 3 (March 26, 2019): 393–419. http://dx.doi.org/10.1515/revce-2017-0008.

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Abstract Steam injection is widely used for heavy oil and bitumen recovery. The advantage of this process is its high recovery factor and its high oil production rate. However, the high production rate is associated with excessive energy consumption, carbon dioxide generation, and expensive post-production water treatment. Some of these disadvantages are overcome or reduced by the addition of solvent mixtures to steam. The steam-solvent processes are complex oil displacement methods involving simultaneous heat, mass, and fluid transport. These processes are not clearly understood despite their apparent importance to the oil industry. Systematic studies are essential in the design, analysis, and evaluation of the steam-solvent processes as well as in mathematical simulation. These studies provide valuable insights for petroleum engineers to improve the oil recovery efficiency when applied in a reservoir. Results of these processes are scattered in many publications over more than 40 years and are not readily available for most petroleum engineers. The purpose of the paper is to present a review of current knowledge and available data, and to delineate the steam-solvent processes.

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21

Li, Wei, Xiaohan Tian, Xiaofeng Li, Ji Liu, Changjun Li, Xinyue Feng, Chao Shu, and Zhong-Zhen Yu. "An environmental energy-enhanced solar steam evaporator derived from MXene-decorated cellulose acetate cigarette filter with ultrahigh solar steam generation efficiency." Journal of Colloid and Interface Science 606 (January 2022): 748–57. http://dx.doi.org/10.1016/j.jcis.2021.08.043.

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22

Ma, Qiang, Zhengda Yang, Liqiang Zhang, Riyi Lin, and Xinwei Wang. "Generation of hydrogen sulfide during the thermal enhanced oil recovery process under superheated steam conditions." RSC Advances 9, no. 58 (2019): 33990–96. http://dx.doi.org/10.1039/c9ra07735a.

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During the thermal enhanced oil recovery process, the hazardous hydrogen sulfide (H₂S) gas among the produced gases increases with superheated degree of vapor, which causes significant difficulty in the exploration and development of petroleum.

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23

Wang, Xinzhi, Yurong He, Xing Liu, and Jiaqi Zhu. "Enhanced direct steam generation via a bio-inspired solar heating method using carbon nanotube films." Powder Technology 321 (November 2017): 276–85. http://dx.doi.org/10.1016/j.powtec.2017.08.027.

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24

Wang, Hongqiang, Ai Du, Xiujie Ji, Chen Zhang, Bin Zhou, Zhihua Zhang, and Jun Shen. "Enhanced Photothermal Conversion by Hot-Electron Effect in Ultrablack Carbon Aerogel for Solar Steam Generation." ACS Applied Materials & Interfaces 11, no. 45 (October 21, 2019): 42057–65. http://dx.doi.org/10.1021/acsami.9b12918.

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25

Li, Chuang, Li Fan, Runzhi Zhu, Xin Li, Piao Wen, Xiaowen Zhao, Gang Wang, Jianli Zou, and Franklin Kim. "Adjusting Channel Size within PVA-Based Hydrogels via Ice Templating for Enhanced Solar Steam Generation." ACS Applied Energy Materials 3, no. 9 (August 10, 2020): 9216–25. http://dx.doi.org/10.1021/acsaem.0c01584.

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26

Li, Zhengtong, Chengbing Wang, Tao Lei, Hailing Ma, Jinbu Su, San Ling, and Wei Wang. "Arched Bamboo Charcoal as Interfacial Solar Steam Generation Integrative Device with Enhanced Water Purification Capacity." Advanced Sustainable Systems 3, no. 4 (January 29, 2019): 1800144. http://dx.doi.org/10.1002/adsu.201800144.

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27

Zhang, Wei, Zhenlin Li, Canying Zhang, Yusheng Lin, Haitao Zhu, Zhaoguo Meng, and Daxiong Wu. "Improvement of the efficiency of volumetric solar steam generation by enhanced solar harvesting and energy management." Renewable Energy 183 (January 2022): 820–29. http://dx.doi.org/10.1016/j.renene.2021.11.054.

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28

Xu, Yunfan, Jinlei Zhang, Shuyi Wu, Yunsong Di, Cihui Liu, Lifeng Dong, Liyan Yu, and Zhixing Gan. "Solar‐Driven Airflow‐Enhanced All‐Daytime Solar Steam Generation Based on Inverse‐Bowl‐Shaped Graphene Aerogels." Energy Technology 10, no. 3 (January 17, 2022): 2100757. http://dx.doi.org/10.1002/ente.202100757.

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29

Morenov, Valentin, Ekaterina Leusheva, Alexander Lavrik, Anna Lavrik, and George Buslaev. "Gas-Fueled Binary Energy System with Low-Boiling Working Fluid for Enhanced Power Generation." Energies 15, no. 7 (March 31, 2022): 2551. http://dx.doi.org/10.3390/en15072551.

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This article discusses methods of enhanced power generation using a binary power system with low-boiling fluid as an intermediate energy carrier. The binary power system consists of micro-gas and steam power units and is intended for remote standalone power supply. Trifluotrichloroethane was considered as the working agent of the binary cycle. The developed system was modeled by two parts in MATLAB Simulink and Aspen HYSYS. The model in Aspen HYSYS calculates the energy and material balance of the binary energy system. The model in MATLAB Simulink investigates the operation of power electronics in the energy system for quality power generation. The results of the simulation show that the efficiency of power generation in the range of 100 kW in the developed system with micro-turbine power units reaches 50%.

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30

Li, X., J. L. Gaddis, and T. Wang. "Mist/Steam Heat Transfer in Confined Slot Jet Impingement." Journal of Turbomachinery 123, no. 1 (February 1, 2000): 161–67. http://dx.doi.org/10.1115/1.1331536.

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Internal mist/steam blade cooling technology has been considered for the future generation of Advanced Turbine Systems (ATS). Fine water droplets of about 5 μm were carried by steam through a single slot jet onto a heated target surface in a confined channel. Experiments covered Reynolds numbers from 7500 to 25,000 and heat fluxes from 3 to 21 kW/m2. The experimental results indicate that the cooling is enhanced significantly near the stagnation point by the mist, decreasing to a negligible level at a distance of six jet widths from the stagnation region. Up to 200 percent heat transfer enhancement at the stagnation point was achieved by injecting only ∼1.5 percent of mist. The investigation has focused on the effects of wall temperature, mist concentration, and Reynolds number.

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31

Rupesh, Shanmughom, Chandrasekharan Muraleedharan, and Palatel Arun. "Analysis of Hydrogen Generation through Thermochemical Gasification of Coconut Shell Using Thermodynamic Equilibrium Model Considering Char and Tar." International Scholarly Research Notices 2014 (November 4, 2014): 1–9. http://dx.doi.org/10.1155/2014/654946.

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This work investigates the potential of coconut shell for air-steam gasification using thermodynamic equilibrium model. A thermodynamic equilibrium model considering tar and realistic char conversion was developed using MATLAB software to predict the product gas composition. After comparing it with experimental results the prediction capability of the model is enhanced by multiplying equilibrium constants with suitable coefficients. The modified model is used to study the effect of key process parameters like temperature, steam to biomass ratio, and equivalence ratio on product gas yield, composition, and heating value of syngas along with gasification efficiency. For a steam to biomass ratio of unity, the maximum mole fraction of hydrogen in the product gas is found to be 36.14% with a lower heating value of 7.49 MJ/Nm3 at a gasification temperature of 1500 K and equivalence ratio of 0.15.

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32

Sittisun, Poramate, Nakorn Tippayawong, and Sirivatch Shimpalee. "Gasification of Pelletized Corn Residues with Oxygen Enriched Air and Steam." International Journal of Renewable Energy Development 8, no. 3 (October 6, 2019): 215–24. http://dx.doi.org/10.14710/ijred.8.3.215-224.

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This work studied generation of producer gas using oxygen-enriched air and steam mixture as gasifying medium. Corn residues consisting of cobs and stover were used as biomass feedstock. Both corn residues were pelletized and gasified separately with normal air, oxygen enriched air and steam mixture in a fixed bed reactor. Effects of oxygen concentration in enriched air (21-50%), equivalence ratio (0.15-0.35), and steam to biomass ratio (0-0.8) on the yield of product gas, the combustible gas composition such as H2, CO, and CH4, the lower heating value (LHV), and the gasification efficiency were investigated. It was found that the decrease in nitrogen dilution in oxygen enriched air increased proportion of combustible gas components, improved the LHV of producer gas, but gasification efficiency was not affected. The increase in equivalence ratio favoured high product gas yield but decreased combustible gas components and LHV. It was also observed that introduction of steam enhanced H2 production but excessive steam degraded fuel gas quality and decreased gasification efficiency. The highest gasification efficiency of each oxygen concentration was at equivalence ratio of 0.3 and steam to biomass ratio of 0.58 for cob, and 0.22 and 0.68 for stover, respectively. ©2019. CBIORE-IJRED. All rights reserved

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33

Li, Kerui, Ting‐Hsiang Chang, Zhipeng Li, Haitao Yang, Fanfan Fu, Tingting Li, John S. Ho, and Po‐Yen Chen. "Biomimetic MXene Textures with Enhanced Light‐to‐Heat Conversion for Solar Steam Generation and Wearable Thermal Management." Advanced Energy Materials 9, no. 34 (August 2019): 1901687. http://dx.doi.org/10.1002/aenm.201901687.

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34

Yan, Wei, Sheng Sui, Guohua Xiu, and Yanfang He. "Combination of Sorption-Enhanced Steam Methane Reforming and Electricity Generation by MCFC: Concept and Numerical Simulation Analysis." Separation Science and Technology 44, no. 13 (September 30, 2009): 3013–44. http://dx.doi.org/10.1080/01496390903182560.

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35

Gao, Can, Jingjing Zhu, Jiecong Li, Buguang Zhou, Xiaojing Liu, Yue Chen, Zhi Zhang, and Jiansheng Guo. "Honeycomb-structured fabric with enhanced photothermal management and site-specific salt crystallization enables sustainable solar steam generation." Journal of Colloid and Interface Science 619 (August 2022): 322–30. http://dx.doi.org/10.1016/j.jcis.2022.03.122.

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36

Mitrofanova, O. V., and A. V. Fedorinov. "Influence of pipeline geometry on hydrodynamics and heat transfer processes by an example of a ship steam generator." Journal of Physics: Conference Series 2088, no. 1 (November 1, 2021): 012033. http://dx.doi.org/10.1088/1742-6596/2088/1/012033.

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Abstract The theoretical and computational analysis proposed in this work is aimed at identifying the features of thermal and hydrodynamic processes carried out in the steam-generating channels of the ship type water-moderated nuclear power installations. It is shown that the complex geometry of the thermohydraulic tract curvilinear channels of the steam generating system has a significant effect on the efficiency of the transport nuclear power installation. In addition to the formation of large-scale vortex structures and swirling flow in the pipeline, the phenomenon of the swirling flow crisis is revealed, under which the low-frequency component of the acoustic spectrum is enhanced. The scientific and applied significance of the proposed research is associated with the need to ensure a wide range of operational changes in efficient and safe operation power modes of icebreaker nuclear power installations. The research, aimed at developing the principles of physical and mathematical modeling of complex vortex flows, is necessary to optimize the design parameters of the thermal power equipment elements of new generation ship nuclear power installations in order to ensure increased safety and reliability of their operation.

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37

Li, Xianchang, J. Leo Gaddis, and Ting Wang. "Mist/Steam Heat Transfer With Jet Impingement Onto a Concave Surface." Journal of Heat Transfer 125, no. 3 (May 20, 2003): 438–46. http://dx.doi.org/10.1115/1.1561813.

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Internal mist/steam blade cooling technology is proposed for the future generation of Advanced Turbine Systems (ATS). Fine water droplets about 5 μm were carried by steam through a slot jet onto a concave heated surface in a confined channel to simulate inner surface cooling at the leading edge of a turbine blade. Experiments covered Reynolds numbers from 7500 to 22,000 and heat fluxes from 3 to 21 kW/m2. Results indicate that the cooling is enhanced significantly near the stagnation point by the mist, decreasing downstream. Unlike impingement onto a flat target where the enhancement vanished at six jet diameters downstream, the cooling enhancement over a concave surface prevails at all points downstream. Similar to the results of the flat surface, the cooling enhancement declines at higher heat fluxes. Up to 200 % cooling enhancement at the stagnation point was achieved by injecting approximately 0.5 % of mist.

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38

Mukhametshina, Albina, Taniya Kar, and Berna Hascakir. "Asphaltene Precipitation During Bitumen Extraction With Expanding-Solvent Steam-Assisted Gravity Drainage: Effects on Pore-Scale Displacement." SPE Journal 21, no. 02 (April 14, 2016): 380–92. http://dx.doi.org/10.2118/170013-pa.

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Summary Steam-assisted gravity drainage (SAGD) is a proved enhanced-oil-recovery technique for oil-sand extraction. However, the environmental and the economic challenges associated with steam generation limit the application of this technology. To address these issues, we have investigated the effectiveness of expanding-solvent-SAGD (ES-SAGD) over base SAGD on a bitumen sample (8.8 °API). Experimental studies are conducted with a 2D physical model. Different strategies for solvent injection are tested (coinjection and cyclic injection) to examine the impact of the deposition of the asphaltene fraction of the bitumen on porous media and the behavior of the asphaltene fraction in produced oil. Toluene is used as asphaltene-soluble solvent, and n-hexane is selected as asphaltene-insoluble. Steam-chamber development is monitored with temperature profiles from 47 separate positions. The oil rate, recovery factor, and the produced-oil quality are evaluated together. The effectiveness of SAGD and ES-SAGD is discussed by considering the role of asphaltenes and their interactions with clays in both produced- and residual-oil samples. This study reveals that coinjection of hydrocarbon solvents with steam enhances the steam-chamber development with higher oil-production rate. Moreover, ES-SAGD results in recovery of more-upgraded oil and has a lesser environmental impact. We observe that the selections of solvent type and injection strategy are the most crucial parameters for the design of a hybrid SAGD process, and solvent cost and toxicity can be minimized with the recycling of solvent for continuous injection of solvents. High-energy consumption for steam generation during the SAGD process can be reduced by coinjection of proper solvent type with steam at a proper injection strategy. Our study reveals that the ES-SAGD process has environmental and economic benefits that are preferable to those of the base SAGD. However, some solvents can cause undesirable effects because of asphaltene destabilization and precipitation in production or transportation lines. The results of this work show that not only asphaltenes but also the other fractions of oil, along with the reservoir-clay type and the clay amount, affect the ES-SAGD performance.

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39

Li, Mingheng, K. Duraiswamy, and Mack Knobbe. "Adsorption enhanced steam reforming of methanol for hydrogen generation in conjunction with fuel cell: Process design and reactor dynamics." Chemical Engineering Science 67, no. 1 (January 2012): 26–33. http://dx.doi.org/10.1016/j.ces.2011.07.024.

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40

Zhang, Yan, Peng Han, He Liu, Lihui Zhang, Hongbo Liu, and Bo Fu. "Effect of steam explosion on physicochemical properties of waste activated sludge and the performance of anaerobic digestion." Water Science and Technology 77, no. 11 (May 22, 2018): 2687–98. http://dx.doi.org/10.2166/wst.2018.227.

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Abstract The effect of steam explosion on physicochemical properties of sludge and the performance of anaerobic digestion (AD) was investigated. The steam explosion was conducted under different combinations of temperature and time, ranging 151–198 °C and 4–12 min respectively. The capillary suction time (CST) and viscosity of the sludge was increased with particle size decreased by improved hydrolysis temperature and prolonged hydrolysis time. The best sludge solubilization achieved was 41.3% under pretreatment condition of 198 °C and 4 min. Biogas production was enhanced with the improved sludge solubilization, and a linear correlation was found between biogas production and the severity factor (logR0) of steam explosion. However, the biogas productivity was reduced when the logR0 was increased from 3.79 to 3.96, probably owing to the generation of refractory organics during the high severity pretreatment. The temperature of 198 °C and the time of 8 min were the recommended operation parameters of steam explosion pretreatment for sludge AD, which could improve biogas production by 99.7 mL/g VSfed. The pH and NH4+-N during sludge AD was increased by steam explosion pretreatment; however, no inhibition on biogas production was observed.

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41

Detchusananard, Thanaphorn, Shivom Sharma, François Maréchal, and Amornchai Arpornwichanop. "Generation and selection of Pareto-optimal solution for the sorption enhanced steam biomass gasification system with solid oxide fuel cell." Energy Conversion and Management 196 (September 2019): 1420–32. http://dx.doi.org/10.1016/j.enconman.2019.06.033.

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42

IORDANIDIS, A., P. KECHAGIOPOULOS, S. VOUTETAKIS, A. LEMONIDOU, and I. VASALOS. "Autothermal sorption-enhanced steam reforming of bio-oil/biogas mixture and energy generation by fuel cells: Concept analysis and process simulation." International Journal of Hydrogen Energy 31, no. 8 (July 2006): 1058–65. http://dx.doi.org/10.1016/j.ijhydene.2005.10.003.

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43

Zhang, Jingxin, Yuxuan Cui, Tengyu Zhang, Qiang Hu, Yen Wah Tong, Yiliang He, Yanjun Dai, Chi-Hwa Wang, and Yinghong Peng. "Food waste treating by biochar-assisted high-solid anaerobic digestion coupled with steam gasification: Enhanced bioenergy generation and porous biochar production." Bioresource Technology 331 (July 2021): 125051. http://dx.doi.org/10.1016/j.biortech.2021.125051.

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Pafili, Anastasia, Nikolaos Charisiou, Savvas Douvartzides, Georgios Siakavelas, Wen Wang, Guanqing Liu, Vagelis Papadakis, and Maria Goula. "Recent Progress in the Steam Reforming of Bio-Oil for Hydrogen Production: A Review of Operating Parameters, Catalytic Systems and Technological Innovations." Catalysts 11, no. 12 (December 15, 2021): 1526. http://dx.doi.org/10.3390/catal11121526.

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The present review focuses on the production of renewable hydrogen through the catalytic steam reforming of bio-oil, the liquid product of the fast pyrolysis of biomass. Although in theory the process is capable of producing high yields of hydrogen, in practice, certain technological issues require radical improvements before its commercialization. Herein, we illustrate the fundamental knowledge behind the technology of the steam reforming of bio-oil and critically discuss the major factors influencing the reforming process such as the feedstock composition, the reactor design, the reaction temperature and pressure, the steam to carbon ratio and the hour space velocity. We also emphasize the latest research for the best suited reforming catalysts among the specific groups of noble metal, transition metal, bimetallic and perovskite type catalysts. The effect of the catalyst preparation method and the technological obstacle of catalytic deactivation due to coke deposition, metal sintering, metal oxidation and sulfur poisoning are addressed. Finally, various novel modified steam reforming techniques which are under development are discussed, such as the in-line two-stage pyrolysis and steam reforming, the sorption enhanced steam reforming (SESR) and the chemical looping steam reforming (CLSR). Moreover, we argue that while the majority of research studies examine hydrogen generation using different model compounds, much work must be done to optimally treat the raw or aqueous bio-oil mixtures for efficient practical use. Moreover, further research is also required on the reaction mechanisms and kinetics of the process, as these have not yet been fully understood.

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Ayache, Simon V., Violaine Lamoureux-Var, Pauline Michel, and Christophe Preux. "Reservoir Simulation of Hydrogen Sulfide Production During a Steam-Assisted-Gravity-Drainage Process by Use of a New Sulfur-Based Compositional Kinetic Model." SPE Journal 22, no. 01 (August 3, 2016): 080–93. http://dx.doi.org/10.2118/174441-pa.

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Summary Steam injection is commonly used as a thermal enhanced-oil-recovery (EOR) method because of its efficiency for recovering hydrocarbons, especially from heavy-oil and bitumen reservoirs. Reservoir models simulating this process describe the thermal effect of the steam injection, but generally neglect the chemical reactions induced by the steam injection and occurring in the reservoir. In particular, these reactions can lead to the generation and production of the highly toxic and corrosive acid gas hydrogen sulfide (H2S). The overall objective of this paper is to quantitatively describe the chemical aquathermolysis reactions that occur in oil-sands reservoirs undergoing steam injections and to provide oil companies with a numerical model for reservoir simulators to forecast the H2S-production risks. For that purpose, a new sulfur-based compositional kinetic model has been developed to reproduce the aquathermolysis reactions in the context of reservoir modeling. It is derived from results gathered on an Athabasca oil sand from previous laboratory aquathermolysis experiments. In particular, the proposed reactions model accounts for the formation of H2S issued from sulfur-rich heavy oils or bitumen, and predicts the modification of the resulting oil saturate, aromatic, resin, and asphaltene (SARA) composition vs. time. One strength of this model is that it is easily calibrated against laboratory-scale experiments conducted on an oil-sand sample. Another strength is that its calibration is performed while respecting the constraints imposed by the experimental data and the theoretical principles. In addition, in this study no calibration was needed at reservoir scale against field-production data. In the paper, the model is first validated with laboratory-scale simulations. The thermokinetic modeling is then coupled with a 2D reservoir simulation of a generic steam-assisted gravity drainage (SAGD) process applied on a generic Athabasca oil-sand reservoir. This formulation allows investigating the H2S generation at reservoir scale and quantifying its production. The H2S- to bitumen-production ratio against time computed by the reservoir simulation is found to be consistent with production data from SAGD operations in Athabasca, endorsing the proposed methodology.

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Wang, Zhenguo, Wangqiong Xu, Ke Yu, Shijing Gong, Huibing Mao, Rong Huang, and Ziqiang Zhu. "NiS 2 Nanocubes Coated Ti 3 C 2 Nanosheets with Enhanced Light‐to‐Heat Conversion for Fast and Efficient Solar Seawater Steam Generation." Solar RRL 5, no. 7 (April 17, 2021): 2100183. http://dx.doi.org/10.1002/solr.202100183.

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Silva, Raquel de Pádua Fernandes, José Luiz de Medeiros, and Ofélia de Queiroz Fernandes Araújo. "Integration of Post-Combustion Capture and Reinjection Plant to Power Generation Cycle Using CO₂-Rich Natural Gas in Offshore Oil and Gas Installation." Materials Science Forum 965 (July 2019): 49–58. http://dx.doi.org/10.4028/www.scientific.net/msf.965.49.

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The use of CO2-rich natural gas (%CO2 ≈ 20%mol) for power generation in offshore hubs results in simpler upgrade process, while imposes an extra challenge to mitigate emissions. Power generation via combined cycle configurations and post-combustion capture with CO2 reinjection are investigated for carbon-footprint reduction, while increasing gas export and oil production, respectively. The processes are simulated using Aspen HYSYS software and compared to currently installed simple cycle configuration in terms of footprint, weight, power, efficiency and CO2 emissions. The combined cycle including two gas turbines and one single-pressure steam cycle (CC 2:1:1) results in the most favorable power system, having 53% efficiency, 476.8 gCO2/kWh emissions and similar dimensions compared to the simple cycle. The integration of a post-combustion capture sending the CO2 for enhanced oil recovery results in 241 gCO2/kWh for the CC 2:1:1 and 251 gCO2/kWh for the simple cycle, without great impacts in total efficiency. The CC 2:1:1 with post-combustion capture presents higher net efficiency, lower dimensions and greater economic advantages, enabling emissions reduction without having significant impacts on the power generation.

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Mikielewicz, Dariusz, Jan Wajs, and Elżbieta Żmuda. "Organic Rankine Cycle as Bottoming Cycle to a Combined Brayton and Clausius - Rankine Cycle." Key Engineering Materials 597 (December 2013): 87–98. http://dx.doi.org/10.4028/www.scientific.net/kem.597.87.

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A preliminary evaluation has been made of a possibility of bottoming of a conventional Brayton cycle cooperating with the CHP power plant with the organic Rankine cycle installation. Such solution contributes to the possibility of annual operation of that power plant, except of operation only in periods when there is a demand for the heat. Additional benefit would be the fact that an optimized backpressure steam cycle has the advantage of a smaller pressure ratio and therefore a less complex turbine design with smaller final diameter. In addition, a lower superheating temperature is required compared to a condensing steam cycle with the same evaporation pressure. Bottoming ORCs have previously been considered by Chacartegui et al. for combined cycle power plants [ Their main conclusion was that challenges are for the development of this technology in medium and large scale power generation are the development of reliable axial vapour turbines for organic fluids. Another study was made by Angelino et al. to improve the performance of steam power stations [. This paper presents an enhanced approach, as it will be considered here that the ORC installation could be extra-heated with the bleed steam, a concept presented by the authors in [. In such way the efficiency of the bottoming cycle can be increased and an amount of electricity generated increases. A thermodynamic analysis and a comparative study of the cycle efficiency for a simplified steam cycle cooperating with ORC cycle will be presented. The most commonly used organic fluids will be considered, namely R245fa, R134a, toluene, and 2 silicone oils (MM and MDM). Working fluid selection and its application area is being discussed based on fluid properties. The thermal efficiency is mainly determined by the temperature level of the heat source and the condenser conditions. The influence of several process parameters such as turbine inlet and condenser temperature, turbine isentropic efficiency, vapour quality and pressure, use of a regenerator (ORC) will be presented. Finally, some general and economic considerations related to the choice between a steam cycle and ORC are discussed.

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Li, Kerui, Ting‐Hsiang Chang, Zhipeng Li, Haitao Yang, Fanfan Fu, Tingting Li, John S. Ho, and Po‐Yen Chen. "Light‐to‐Heat Conversion: Biomimetic MXene Textures with Enhanced Light‐to‐Heat Conversion for Solar Steam Generation and Wearable Thermal Management (Adv. Energy Mater. 34/2019)." Advanced Energy Materials 9, no. 34 (September 2019): 1970141. http://dx.doi.org/10.1002/aenm.201970141.

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Ho, Phuoc, Erika Scavetta, Domenica Tonelli, Giuseppe Fornasari, Angelo Vaccari, and Patricia Benito. "Hydrotalcite-Type Materials Electrodeposited on Open-Cell Metallic Foams as Structured Catalysts." Inorganics 6, no. 3 (July 29, 2018): 74. http://dx.doi.org/10.3390/inorganics6030074.

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Structured catalysts based on hydrotalcite-derived coatings on open-cell metallic foams combine tailored basic/acidic sites, relatively high specific surface area and/or metal dispersion of the coating as well as low pressure drop and enhanced heat and mass transfer of the 3D metallic support. The properties of the resulting structured catalysts depend on the coating procedure. We have proposed the electro-base generation method for in situ and fast precipitation of Ni/Al and Rh/Mg/Al hydrotalcite-type materials on FeCrAlloy foams, which after calcination at high temperature give rise to structured catalysts for syngas (CO + H2) production through Steam Reforming and Catalytic Partial Oxidation of CH4. The fundamental understanding of the electrochemical-chemical reactions relevant for the electrodeposition and the influence of electrosynthesis parameters on the properties of the as-deposited coatings as well the resulting structured catalysts and, hence, on their catalytic performance, were summarized.

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