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Constant temperature control of tundish induction heating power supply for metallurgical manufacturing

Yufei YUE, Qianming XU, Peng GUO, An LUO

Frontiers in Energy 2019, Volume 13, Issue 1,   Pages 16-26 doi: 10.1007/s11708-018-0572-0

Abstract: Specially, the constant temperature control is greatly significant for metallurgical manufacturing.In terms of the relationship between TIH load temperature and output power of TIHPS, the constant temperatureBesides, an input harmonic current blocking strategy and a load voltage feedforward control are alsoproposed to realize constant temperature control.

Keywords： tundish induction heating power supply (TIHPS)     constant temperature control     input harmonic current blocking    

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Solar photovoltaic fed dual input LED lighting system with constant illumination control

Kinattingal SUNDARESWARAN,Kevin Ark KUMAR,Payyalore Raman VENKATESWARAN,Sankaran PALANI

Frontiers in Energy 2016, Volume 10, Issue 4,   Pages 473-478 doi: 10.1007/s11708-016-0420-z

Abstract: A dual input LED lighting scheme with constant illumination is proposed in this paper.The scheme employs a photovoltaic array as the first input and a battery as the second one.microcontroller is programmed to operate a changeover switch as well as a DC-DC converter for uninterrupted and constant

Keywords： photovoltaic     LED light     dual input     P&O algorithm    

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A new approach for analyzing the effect of non-ideal power supply on a constant current underwater cabled Personal View

Yu-jia ZANG, Yan-hu CHEN, Can-jun YANG, De-jun LI, Ze-jian CHEN, Gul MUHAMMAD

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 4,   Pages 604-614 doi: 10.1631/FITEE.1800737

Abstract: The effect of a constant current (CC) power supply on the CC ocean observation system is a problem that

Keywords： Non-ideal power supply     Constant current input     Ocean observation system    

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Research progress on low dielectric constant modification of cellulose insulating paper for power transformers

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 8,   Pages 991-1009 doi: 10.1007/s11705-022-2259-7

Abstract: insulation level of ultrahigh voltage transformers and reduce their weight and size, reducing the dielectric constantThe dielectric constant of a cellulose insulating paper can be effectively reduced by chemical or physicalforeign and domestic research status of the use of modification technology to reduce the dielectric constantThis paper can provide a reference for further research on low dielectric constant cellulose insulating

Keywords： low dielectric constant     chemical and physical modification     cellulose insulating paper     transformer    

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Approximation of structural damping and input excitation force

Mohammad SALAVATI

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 2,   Pages 244-254 doi: 10.1007/s11709-016-0371-9

Abstract: On the other hand, solving the inverse problem of the input force estimation and its distribution toIn this paper model-based damping approximation method and a model-less structural input estimation are

Keywords： structural modal parameters     damping identification method     input excitation force identification     Inverse    

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Analysis and characterization of wind-solar-constant torque spring hybridized model

Shantanu ACHARYA,Subhadeep BHATTACHARJEE

Frontiers in Energy 2014, Volume 8, Issue 3,   Pages 279-289 doi: 10.1007/s11708-014-0312-z

Abstract: Solar and wind are the most promising renewable energy resources. But their unpredictable and varying nature prevents them from being used as the sole resource for power generation. This paper presents a model of wind and solar thermal hybrid power plant with a spring storage system which is expected to play an efficient role in combating with the drawbacks related to renewable power generation. In the proposed scheme, wind energy is harnessed by a hybrid vertical axis wind turbine, solar energy is utilized by a Stirling engine, and the surplus energy is stored in a winding spring. The paper discusses the working methodologies and analyses the performance of such 2.6 kW hybrid power plant model. It has been observed that the plant is capable of consistently generating 50% of its rated capacity irrespective of limitations in solar and wind resources.

Keywords： hybrid vertical axis wind turbine     Stirling engine     solar-thermal energy     wind energy     constant torque spring    

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Development of a fan-stirred constant volume combustion chamber and turbulence measurement with PIV

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 973-987 doi: 10.1007/s11708-021-0762-z

Abstract: A fan-stirred combustion chamber is deve-loped for spherically expanding flames, with P and T up to 10 bar and 473 K, respectively. Turbulence characteristics are estimated using particle image velocimetry (PIV) at different initial pressures (P = 0.5–5 bar), fan frequencies (ω = 0–2000 r/min), and impeller diameters (D = 100 and 114 mm). The flame propagation of methanol/air is investigated at different turbulence intensities (u′=0–1.77 m/s) and equivalence ratios (φ = 0.7–1.5). The results show that u′ is independent of P and proportional to ω, which can be up to 3.5 m/s at 2000 r/min. LT is independent of P and performs a power regression with ω approximately. The turbulent field is homogeneous and isotropic in the central region of the chamber while the inertial subrange of spatial energy spectrum is more collapsed to –5/3 law at a high ReT. Compared to laminar expanding flames, the morpho-logy of turbulent expanding flames is wrinkled and the wrinkles will be finer with the growth of turbulence intensity, consistent with the decline of the Taylor scale and the Kolmogorov scale. The determined SL in the present study is in good agreement with that of previous literature. The SL and ST of methanol/air have a non-monotonic trend with φ while peak ST is shifted to the richer side compared to SL. This indicates that the newly built turbulent combustion chamber is reliable for further experimental study.

Keywords： fan-stirred combustion chamber     turbulence characteristics     particle image velocimetry (PIV)     methanol     turbulent expanding flames    

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Power system design for constant current subsea observatories Regular Article

Yan-hu Chen, Sa Xiao, De-jun Li,yanhuchen@zju.edu.cn,sxiao@zju.edu.cn,li_dejun@zju.edu.cn

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 11,   Pages 1505-1515 doi: 10.1631/FITEE.1800362

Abstract: Constant current power transmission is considered a good choice for subsea observatories due to its highA constant current subsea is planned to be constructed in the East China Sea.We discuss a constant current subsea system used for scientific experiments.The power conversion method is challenging due to the use of constant current power, which is considerablyThus, we adopt power compensation circuits in the conversion system to obtain a constant 48-V output

Keywords： 海底观测网；电能变换；散热    

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Greenhouse gas emissions mitigation and economic viability of sugar crops in China

Frontiers of Agricultural Science and Engineering doi: 10.15302/J-FASE-2023529

Abstract:

● Sugarcane and sugar beet yield and carbon footprint rose with time but profit declined

Keywords： Economic profits     GHG emissions     labor input     nitrogen input     sugar    

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Cutting CO emissions through demand side regulation: Implications from multi-regional input–output linear

Frontiers of Engineering Management   Pages 452-461 doi: 10.1007/s42524-022-0209-1

Abstract: This study combines multi-regional input–output (MRIO) model with linear programming (LP) model to explore

Keywords： CO2 emissions     demand side regulation     multi-regional input–output model     linear programming    

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The energy consumption in a batch stripper and a batch rectifier

Xianbao CUI, Tianyang FENG, Ying ZHANG, Zhicai YANG,

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 4,   Pages 443-452 doi: 10.1007/s11705-009-0266-6

Abstract: energy consumption of a batch stripper was compared to that of a batch rectifier under “general constantreflux” and “general constant distillate composition” with the ratio of minimum energyenergy consumption of a batch stripper is less than that of a batch rectifier under “general constantreflux” and “general constant distillate composition”.relative volatility is low, a batch stripper can also consume less energy only in the “general constant

Keywords： constant reflux     feed     energy consumption     general constant     product purity    

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A stepless-power-reconfigurable converter for a constant current underwater observatory Research Article

Yujia Zang, Yanhu Chen, Canjun Yang, Haoyu Zhang, Zhiyong Duan, Gul Muhammad,yanhuchen@zju.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 12,   Pages 1551-1684 doi: 10.1631/FITEE.2100259

Abstract: The conversion from constant current (CC) to constant voltage (CV) is one of the key technologies of

Keywords： 恒流/恒压转换；并联稳压器；无级功率重构；水下观测网    

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Estimation of regional physical imports and exports of EW-MFA in China using monetary input-output tables

Nan LI, Tianzhu ZHANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 2,   Pages 242-254 doi: 10.1007/s11783-012-0443-6

Abstract: This method uses provincial monetary input-output tables (MIOT) and international trade statistics.

Keywords： economy-wide material flow accounts (EW-MFA)     monetary input-output table (MIOT)     regional physical imports    

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Oral product input to the GI tract: GIS an oral product performance technology

Gordon L. Amidon, Yasuhiro Tsume

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4,   Pages 516-520 doi: 10.1007/s11705-017-1658-7

Abstract: This system can provide the actual input needed to accurately predict the input into the systemic circulation

Keywords： GIS     in vivo predictive dissolution     ketoconazole     BCS subclassification     supersaturation    

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Multiple input self-organizing-map ResNet model for optimization of petroleum refinery conversion units

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 6,   Pages 759-771 doi: 10.1007/s11705-022-2269-5

Abstract: ., multi-input self-organizing-map ResNet (MISR), for modeling refining units comprised of two reactorsThe self-organizing-map part maps the input data into multiple two-dimensional planes and sends themof hydrocracking unit also benefits from the utilization of prior knowledge of the importance of the input

Keywords： hydrocracking     convolutional neural networks     self-organizing map     deep learning     data-driven optimization    

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Title Author Date Type Operation

Constant temperature control of tundish induction heating power supply for metallurgical manufacturing

Yufei YUE, Qianming XU, Peng GUO, An LUO

Journal Article

Solar photovoltaic fed dual input LED lighting system with constant illumination control

Kinattingal SUNDARESWARAN,Kevin Ark KUMAR,Payyalore Raman VENKATESWARAN,Sankaran PALANI

Journal Article

A new approach for analyzing the effect of non-ideal power supply on a constant current underwater cabled

Yu-jia ZANG, Yan-hu CHEN, Can-jun YANG, De-jun LI, Ze-jian CHEN, Gul MUHAMMAD

Journal Article

Research progress on low dielectric constant modification of cellulose insulating paper for power transformers

Journal Article

Approximation of structural damping and input excitation force

Mohammad SALAVATI

Journal Article

Analysis and characterization of wind-solar-constant torque spring hybridized model

Shantanu ACHARYA,Subhadeep BHATTACHARJEE

Journal Article

Development of a fan-stirred constant volume combustion chamber and turbulence measurement with PIV

Journal Article

Power system design for constant current subsea observatories

Yan-hu Chen, Sa Xiao, De-jun Li,yanhuchen@zju.edu.cn,sxiao@zju.edu.cn,li_dejun@zju.edu.cn

Journal Article

Greenhouse gas emissions mitigation and economic viability of sugar crops in China

Journal Article

Cutting CO emissions through demand side regulation: Implications from multi-regional input–output linear

Journal Article

The energy consumption in a batch stripper and a batch rectifier

Xianbao CUI, Tianyang FENG, Ying ZHANG, Zhicai YANG,

Journal Article

A stepless-power-reconfigurable converter for a constant current underwater observatory

Yujia Zang, Yanhu Chen, Canjun Yang, Haoyu Zhang, Zhiyong Duan, Gul Muhammad,yanhuchen@zju.edu.cn

Journal Article

Estimation of regional physical imports and exports of EW-MFA in China using monetary input-output tables

Nan LI, Tianzhu ZHANG

Journal Article

Oral product input to the GI tract: GIS an oral product performance technology

Gordon L. Amidon, Yasuhiro Tsume

Journal Article

Multiple input self-organizing-map ResNet model for optimization of petroleum refinery conversion units

Journal Article