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Theoretical study on flow and radiation in tubular solar photocatalytic reactor

Frontiers in Energy 2021, Volume 15, Issue 3, Pages 687-699 doi: 10.1007/s11708-021-0773-9

Abstract: In this paper, based on the mixture flow model, an optimized six-flux model is first established andParameters influencing photocatalyst distribution and radiation distribution at the reactor outlet, vizIt is found that, at the outlet of the reactor, the optimized six-flux model has better performances

Keywords： photocatalytic hydrogen photoreactor nume- rical simulation solar energy flow model radiation model

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A method of determining flame radiation fraction induced by interaction burning of tri-symmetric propanefires in open space based on weighted multi-point source model

Jie JI, Junrui DUAN, Huaxian WAN

Frontiers in Energy 2022, Volume 16, Issue 6, Pages 1017-1026 doi: 10.1007/s11708-020-0716-x

Abstract: The interaction of multiple fires may lead to a higher flame height and more intense radiation flux thanMoreover, the multi-point source model was further improved, and radiation fraction of propane was calculatedThe data obtained in this study would play an important role in calculating the external radiation of

Keywords： flame interaction air entrainment flame height multi-point source model thermal radiation

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Nongray radiation from gas and soot mixtures in planar plates based on statistical narrow-band spectralmodel

Huaqiang CHU, Qiang CHENG, Huaichun ZHOU, Fengshan LIU

Frontiers in Energy 2011, Volume 5, Issue 2, Pages 149-158 doi: 10.1007/s11708-010-0124-8

Abstract: Based on the statistical narrow-band (SNB) spectral model with an exponential-tailed inverse intensitydistribution and the ray-tracing method, a comprehensive investigation of the influence of soot on nongray radiationIn combustion applications, radiation transfer is significantly enhanced by soot due to its spectrallyThe effect of soot volume fraction up to 1×10 on the source term, the narrow-band radiation intensities

Keywords： soot combustion SNB model nongray radiation

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Smart model for accurate estimation of solar radiation

Lazhar ACHOUR, Malek BOUHARKAT, Ouarda ASSAS, Omar BEHAR

Frontiers in Energy 2020, Volume 14, Issue 2, Pages 383-399 doi: 10.1007/s11708-017-0505-3

Abstract: Prediction of solar radiation has drawn increasing attention in the recent years.This is because of the lack of solar radiation measurement stations.In the present work, 14 solar radiation models have been used to assess monthly global solar radiationSince it has been observed that each model is adequate for some months of the year, one model cannotThe results indicate that the new hybrid model is capable of predicting the monthly global solar radiation

Keywords： global solar radiation statistical indicator hybrid model spatial database correlation coefficients

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Effect analysis of fire location on fire growth in large space

Shi Long,Zhang Ruifang,Xie Qiyuan,Fu Lihua

Strategic Study of CAE 2008, Volume 10, Issue 11, Pages 37-42

Abstract: Take large-scale exhibition hall for example, utilizing fire radiation model and smoke radiation modelResearch reveals: only considering fire radiation, when fire develops in a location of bilateral symmetryMoreover, combining fire radiation and smoke radiation, HRR peak values consumedly increases and almostBut other rules, which contain fire growth and the correlative time, when considering fire radiationand smoke radiation, is the same as the situation of just considering fire radiation.

Keywords： fire growth fire design in large space fire location fire radiation model smoke radiation model

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Correlations for estimating solar radiation using sunshine hours and temperature measurement in Osogbo

O. S. OHUNAKIN, M. S. ADARAMOLA, O. M. OYEWOLA, R. O. FAGBENLE

Frontiers in Energy 2013, Volume 7, Issue 2, Pages 214-222 doi: 10.1007/s11708-013-0241-2

Abstract: In this study, the global solar radiation on horizontal surface in Osogbo, Osun state, Nigeria was analyzedCorrelations using linear and quadratic expressions were developed to relate the global solar radiationrelative sunshine hours and temperature measurements for evaluating the monthly average daily global solar radiationHowever, the Hargreaves and Samani related based quadratic model gave the best among the three developedquadratic expressions and is therefore suggested for estimating the monthly global radiation in this

Keywords： global solar radiation Hargreaves model sunshine hour ambient temperatures Osogbo

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Entropy production analysis of swirling diffusion combustion processes

Deodat MAKHANLALL, Linhua LIU,

Frontiers in Energy 2010, Volume 4, Issue 3, Pages 326-332 doi: 10.1007/s11708-009-0058-1

Abstract: A critical factor in the design of combustion systems for optimum fuel economy and emission performance lies in adequately predicting thermodynamic irreversibilities associated with transport and chemical processes. The objective of this study is to map these irreversibilities in terms of entropy production for methane combustion. The numerical solution of the combustion process is conducted with the help of a Fluent 6.1.22 computer code, and the volumetric entropy production rate due to chemical reaction, viscous dissipation, and mass and heat transfer are calculated as post-processed quantities with the computed data of the reaction rates, fluid velocity, temperature and radiative intensity. This paper shows that radiative heat transfer, which is an important source of entropy production, cannot be omitted for combustion systems. The study is extended by conducting a parametric investigation to include the effects of wall emissivity, optical thickness, swirl number, and Boltzmann number on entropy production. Global entropy production rates decrease with the increase in swirl velocity, wall emissivity and optical thickness. Introducing swirling air into the combustion system and operations with the appropriate Boltzmann number reduces the irreversibility affected regions and improves energy utilization efficiency.

Keywords： entropy-based design radiation transfer swirl magnussen combustion-model

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Particle therapy for cancers: a new weapon in radiation therapy

Guo-Liang Jiang

Frontiers of Medicine 2012, Volume 6, Issue 2, Pages 165-172 doi: 10.1007/s11684-012-0196-4

Abstract: Particle irradiation started to draw attention in the past decade and has now become a hotspot in the radiationdevelopments in particle irradiation, focusing on the characteristics of proton and carbon ions in radiationCompared with the most advanced radiation techniques using photon, such as three-dimensional conformalradiation therapy and intensity-modulated radiation therapy, proton therapy has yielded more promising

Keywords： radiation therapy particle therapy proton carbon cancer

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Analysis of radiation heat transfer and temperature distributions of solar thermochemical reactor for

Bachirou GUENE LOUGOU, Yong SHUAI, Xiang CHEN, Yuan YUAN, Heping TAN, Huang XING

Frontiers in Energy 2017, Volume 11, Issue 4, Pages 480-492 doi: 10.1007/s11708-017-0506-2

Abstract: This paper investigated radiation heat transfer and temperature distributions of solar thermochemicalThe fvDOM approximation was used to obtain the radiation intensity distribution along the reactor.The drop in the temperature resulted from the radiation scattering was further investigated using themodel was very close under different operating conditions.to the thermal non-equilibrium was observed in the radiation inlet region.

Keywords： solar thermochemical reactor incident radiation flux temperature distribution radiation absorptivity radiation emissivity thermal performance analysis

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Security of solar radiation management geoengineering

Andrew LOCKLEY

Frontiers of Engineering Management 2019, Volume 6, Issue 1, Pages 102-116 doi: 10.1007/s42524-019-0008-5

Abstract:

Solar Radiation Management (SRM) geoengineering is a proposed response to anthropogenic global warming

Keywords： security geoengineering solar radiation ma-nagement SRM

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Distributed governance of Solar Radiation Management geoengineering: A possible solution to SRM’s “free-driver

Andrew LOCKLEY

Frontiers of Engineering Management 2019, Volume 6, Issue 4, Pages 551-556 doi: 10.1007/s42524-019-0055-y

Abstract: Solar Radiation Management geoengineering (SRM) offers relatively inexpensive, rapid temperature controlWe propose a novel distributed governance model of consensually-constrained unilateralism: Countries’

Keywords： geoengineering Solar Radiation Management governance decentralised

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Geometry model for dynamic thermal process in building

Ding Lixing,He Liqun,Chen Zuming,Liu Xianping,Ji Jie

Strategic Study of CAE 2010, Volume 12, Issue 8, Pages 88-93

Abstract:

The projection of sun direct radiation and the solar radiation intensityAccording to the feature of building thermal process model and the theory of computer graphics, a newgeometrical model for analysis of building thermal process is advanced in the thesis.Building in the model is simplified into an aggregation of space regions, which are composed of vectorbetween walls, and the projection of solar direct radiation; it also has practical value on air flow

Keywords： thermal process in building geometrical model solar radiation

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Ambient photolysis frequency of NO

Qi Zou,Keding Lu,Yusheng Wu,Yudong Yang,Zhuofei Du,Min Hu

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 6, doi: 10.1007/s11783-016-0885-3

Abstract: The j(NO ) data were calculated using the tropospheric ultraviolet visible radiation (TUV) model, whichThe good agreement between the CA and SR data, and the consistency with the TUV model results, demonstrate

Keywords： frequency of nitrogen dioxide Chemical actinometer Spectroradiometer Tropospheric ultraviolet visible radiationmodel

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Design and analysis of Salisbury screens and Jaumann absorbers for solar radiation absorption

Xing FANG, C. Y. ZHAO, Hua BAO

Frontiers in Energy 2018, Volume 12, Issue 1, Pages 158-168 doi: 10.1007/s11708-018-0542-6

Abstract: ., Salisbury screens and Jaumann absorbers are systematically investigated in solar radiation absorption

Keywords： thin films admittance loci solar absorber

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Gain-enhanced reconfigurable radiation array with mechanically driven system and directive elements

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0716-0

Abstract: In this paper, we propose a mechanically reconfigurable radiation array (RRA) based on miniaturized elements

Keywords： mechanism reconfigurable radiation array (RRA) compact state deployed state enhanced gain

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Title Author Date Type Operation

Theoretical study on flow and radiation in tubular solar photocatalytic reactor

Journal Article

A method of determining flame radiation fraction induced by interaction burning of tri-symmetric propanefires in open space based on weighted multi-point source model

Jie JI, Junrui DUAN, Huaxian WAN

Journal Article

Nongray radiation from gas and soot mixtures in planar plates based on statistical narrow-band spectralmodel

Huaqiang CHU, Qiang CHENG, Huaichun ZHOU, Fengshan LIU

Journal Article

Smart model for accurate estimation of solar radiation

Lazhar ACHOUR, Malek BOUHARKAT, Ouarda ASSAS, Omar BEHAR

Journal Article

Effect analysis of fire location on fire growth in large space

Shi Long,Zhang Ruifang,Xie Qiyuan,Fu Lihua

Journal Article

Correlations for estimating solar radiation using sunshine hours and temperature measurement in Osogbo