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An investigation into the heat transfer characteristics of spiral wall with internal rib in a supercriticalsliding-pressure operation once-through boiler

TANG Renhu, YIN Fei, WANG Haijun, CHEN Tingkuan

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 300-304 doi: 10.1007/s11708-007-0043-5

Abstract: Within the pressure range of 9–28 MPa, mass velocity range of 600–1 200 kg/(m · s), and heat flux rangeHowever, the heat transfer enhancement decreased near the critical pressure.At supercritical pressure, the temperature difference between the wall and the fluid increased near theWhen pressure is closer to the critical pressure, the temperature difference between the wall and theHeat transfer to supercritical water in the inclined upward internally ribbed tube was enhanced or deteriorated

Keywords： m ·     diameter     critical pressure     sub-critical pressure     maximum    

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Convective heat transfer in helical coils for constant-property and variable-property flows with high Reynolds numbers

Yufei MAO, Liejin GUO, Bofeng BAI, Ximin ZHANG

Frontiers in Energy 2010, Volume 4, Issue 4,   Pages 546-552 doi: 10.1007/s11708-010-0116-8

Abstract: Both constant-property flows at normal pressure and variable-property flows at supercritical pressureBased on the experimental data, heat transfer correlations for both incompressible flows and supercritical

Keywords： convective heat transfer     helical coils     high Reynolds number     supercritical pressure     variable property    

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Calculation and analysis of sub/supercritical methanol preheating tube for continuous production of biodieselvia supercritical methanol transesterification

Wen CHEN, Weiyong YING, Cunwen WANG, Weiguo WANG, Yuanxin WU, Junfeng ZHANG,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 423-431 doi: 10.1007/s11708-009-0075-0

Abstract: Supercritical methanol transesterification for biodiesel has recently been concerned because of its obviousThe tubular reactor is an ideal reactor for continuous preparation of biodiesel via supercritical methanolmethanol preheating tube is necessary for the tubular reaction system because the reaction temperature for supercritical;600K, changes of the density, isobaric capacity, viscosity and thermal conductivity of sub/supercriticalthe basis of these thermophysical properties, an integration method is adopted for the design of sub/supercritical

Keywords： sub/supercritical methanol     preheating tube     integration method     biodiesel    

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A review on catalytic & non-catalytic bio-oil upgrading in supercritical fluids

Sainab Omar, Yang Yang, Jiawei Wang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 4-17 doi: 10.1007/s11705-020-1933-x

Abstract: summarizes the key published research on the topic of bio-oil upgrading using catalytic and non-catalytic supercriticalhave opted for non-precious metal catalysts such as acidic HZSM-5 which can promote esterification in supercriticalSupercritical methanol, ethanol, and water are most commonly used and demonstrate catalyst like activities

Keywords： bio-oil     upgrading     supercritical     review    

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Polydimethylsiloxane assisted supercritical CO

Weixia Wang, Shuai Zhou, Zhong Xin, Yaoqi Shi, Shicheng Zhao

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3,   Pages 396-404 doi: 10.1007/s11705-016-1577-z

Abstract: The effect of PDMS viscosity on the foaming behavior of HMSPP was systematically investigated using supercritical

Keywords： high melt strength polypropylene (HMSPP)     polydimethylsiloxane (PDMS)     supercritical CO2     foaming    

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Corrosion mechanisms of candidate structural materials for supercritical water-cooled reactor

Lefu ZHANG, Fawen ZHU, Rui TANG

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 233-240 doi: 10.1007/s11708-009-0024-y

Abstract: strengthened steel are presently considered to be the candidate structural or fuel-cladding materials for supercriticalmechanism of those candidate materials exhibits quite complicated mechanism in high-temperature and high-pressuresupercritical water.

Keywords： supercritical water-cooled reactor     general corrosion     oxide film     corrosion mechanism    

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Development of a supercritical and an ultra-supercritical circulating fluidized bed boiler

Junfu LYU, Hairui YANG, Wen LING, Li NIE, Guangxi YUE, Ruixin LI, Ying CHEN, Shilong WANG

Frontiers in Energy 2019, Volume 13, Issue 1,   Pages 114-119 doi: 10.1007/s11708-017-0512-4

Abstract: The supercritical circulating fluidized bed (CFB) boiler, which combines the advantages of CFB combustionwith low cost emission control and supercritical steam cycle with high efficiency of coal energy, isDifferent from the supercritical pulverized coal boiler that has been developed more than 50 years, thesupercritical CFB boiler is still a new one which requires further investigation.The design theory and key technology for supercritical CFB boiler were proposed.

Keywords： supercritical     circulating fluidized bed boiler     development     demonstration    

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Thermo-economic analysis of a direct supercritical CO electric power generation system using geothermal

Frontiers in Energy 2022, Volume 16, Issue 2,   Pages 246-262 doi: 10.1007/s11708-021-0749-9

Abstract: A comprehensive thermo-economic model combining a geothermal heat mining system and a direct supercriticalA parametric study was conducted to demonstrate the impact of turbine discharge pressure, injection andsub> injection flowrate, CO2 injection temperature, and monitored production well bottom pressure

Keywords： geothermal heat mining     supercritical CO2     power generation     thermo-economic analysis     optimization    

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Production of renewable fuels by blending bio-oil with alcohols and upgrading under supercritical conditions

Sainab Omar, Suzanne Alsamaq, Yang Yang, Jiawei Wang

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 702-717 doi: 10.1007/s11705-019-1861-9

Abstract: The work studied a non-catalytic upgrading of fast pyrolysis bio-oil by blending under supercriticalThe GCMS analysis indicated that the supercritical methanol reaction removed the acids in the bio-oilconsequently the pH increased from 2.39 in the crude bio-oil to 4.04 after the supercritical methanolThe ester contents increased by 87.49% after the supercritical methanol reaction indicating ester formationAfter the supercritical isopropanol reaction, the heating value of the liquid product slightly further

Keywords： bio-oil     blending     supercritical     upgrading     characterisation    

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Updating the Fossil-fired Power Infrastructure via Supercritical Thermal Power Units

Song Zhiping

Strategic Study of CAE 2002, Volume 4, Issue 2,   Pages 22-27

Abstract: Numerous efforts have been made worldwide to reach high levels of efficiency by using super-and ultra supercritical

Keywords： thermal power infrastructure     supercritical steam conditions     ultra-supercritical power unit     sustainable    

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Micronization of curcumin with biodegradable polymer by supercritical anti-solvent using micro swirl

Kimthet Chhouk, Wahyudiono, Hideki Kanda, Shin-Ichro Kawasaki, Motonobu Goto

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 184-193 doi: 10.1007/s11705-017-1678-3

Abstract: swirl mixer was employed to produce the micronized curcumin with polyvinylpyrrolidone (PVP) by the supercriticalThe effects of operating parameters such as curcumin/PVP ratio, feed concentration, temperature, pressurePVP particles is at curcumin/PVP ratio of 1:30, feed concentration of 5 mg·mL , temperature of 40 °C, pressure

Keywords： micronization     curcumin     polyvinylpyrrolidone     supercritical anti-solvent     swirl mixer    

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Key problems and solutions in supercritical CO

Haizhu WANG, Gensheng LI, Bin ZHU, Kamy SEPEHRNOORI, Lujie SHI, Yong ZHENG, Xiaomei SHI

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 667-672 doi: 10.1007/s11708-019-0626-y

Abstract: Supercritical CO fracturing is considered to be a new method for efficient exploitation of unconventionalSupercritical CO has many special properties including low viscosity, high diffusion coefficient, andthe problem of poor capacity in proppant carrying and sand plug, the methods of adding tackifier into supercriticalAfter solving the above three problems, the field test of supercritical CO fracturing can be conductedThe research results can promote the industrialization process of supercritical CO fracturing.

Keywords： supercritical CO2     fracturing     friction loss     proppant carrying     flied test problem    

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A new heat transfer correlation for supercritical fluids

Yanhua YANG, Xu CHENG, Shanfang HUANG

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 226-232 doi: 10.1007/s11708-009-0022-0

Abstract: A new method of heat transfer prediction in supercritical fluids is presented.

Keywords： super critical fluids     heat transfer     circular tubes     prediction method    

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Heat transfer with water flowing upward in a tube for pressures up to supercritical region

Yuzhou CHEN, Chunsheng YANG, Shuming ZHANG, Minfu ZHAO, Kaiwen DU,

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 358-365 doi: 10.1007/s11708-009-0071-4

Abstract: conducted in a tube of 6.07mm in diameter with water flowing upward, covering the ranges of pressureSignificant deterioration in heat transfer was observed in both subcritical and supercritical region

Keywords： heat transfer     deterioration     buoyancy     supercritical water    

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Simulation analysis of methanol flash distillation circulation process in biodiesel production with supercritical

Zhengjiao TANG, Cunwen WANG, Weiguo WANG, Jia GUO, Yuanxin WU, Jinfang CHEN, Yigang DING

Frontiers in Energy 2011, Volume 5, Issue 1,   Pages 93-97 doi: 10.1007/s11708-010-0028-7

Abstract: methanol-to-oil ratio is required to obtain a high conversion of oil for the production of biodiesel with supercriticalRecovering the methanol of a stream issuing from a transesterification supercritical reactor by flashThe process in which the product of transesterification of soybean oil with supercritical methanol isThe effect of cooling temperature, feed pressure and flash pressure on methanol concentration and recoveryAccording to this study, when the feed pressure range is 15–30 MPa, the flash pressure equals 0.4 MPa

Keywords： supercritical methanol     biodiesel     recovery     flash distillation    

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Title Author Date Type Operation

An investigation into the heat transfer characteristics of spiral wall with internal rib in a supercriticalsliding-pressure operation once-through boiler

TANG Renhu, YIN Fei, WANG Haijun, CHEN Tingkuan

Journal Article

Convective heat transfer in helical coils for constant-property and variable-property flows with high Reynolds numbers

Yufei MAO, Liejin GUO, Bofeng BAI, Ximin ZHANG

Journal Article

Calculation and analysis of sub/supercritical methanol preheating tube for continuous production of biodieselvia supercritical methanol transesterification

Wen CHEN, Weiyong YING, Cunwen WANG, Weiguo WANG, Yuanxin WU, Junfeng ZHANG,

Journal Article

A review on catalytic & non-catalytic bio-oil upgrading in supercritical fluids

Sainab Omar, Yang Yang, Jiawei Wang

Journal Article

Polydimethylsiloxane assisted supercritical CO

Weixia Wang, Shuai Zhou, Zhong Xin, Yaoqi Shi, Shicheng Zhao

Journal Article

Corrosion mechanisms of candidate structural materials for supercritical water-cooled reactor

Lefu ZHANG, Fawen ZHU, Rui TANG

Journal Article

Development of a supercritical and an ultra-supercritical circulating fluidized bed boiler

Junfu LYU, Hairui YANG, Wen LING, Li NIE, Guangxi YUE, Ruixin LI, Ying CHEN, Shilong WANG

Journal Article

Thermo-economic analysis of a direct supercritical CO electric power generation system using geothermal

Journal Article

Production of renewable fuels by blending bio-oil with alcohols and upgrading under supercritical conditions

Sainab Omar, Suzanne Alsamaq, Yang Yang, Jiawei Wang

Journal Article

Updating the Fossil-fired Power Infrastructure via Supercritical Thermal Power Units

Song Zhiping

Journal Article

Micronization of curcumin with biodegradable polymer by supercritical anti-solvent using micro swirl

Kimthet Chhouk, Wahyudiono, Hideki Kanda, Shin-Ichro Kawasaki, Motonobu Goto

Journal Article

Key problems and solutions in supercritical CO

Haizhu WANG, Gensheng LI, Bin ZHU, Kamy SEPEHRNOORI, Lujie SHI, Yong ZHENG, Xiaomei SHI

Journal Article

A new heat transfer correlation for supercritical fluids

Yanhua YANG, Xu CHENG, Shanfang HUANG

Journal Article

Heat transfer with water flowing upward in a tube for pressures up to supercritical region

Yuzhou CHEN, Chunsheng YANG, Shuming ZHANG, Minfu ZHAO, Kaiwen DU,

Journal Article

Simulation analysis of methanol flash distillation circulation process in biodiesel production with supercritical

Zhengjiao TANG, Cunwen WANG, Weiguo WANG, Jia GUO, Yuanxin WU, Jinfang CHEN, Yigang DING

Journal Article