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A building unit decomposition model for energy leakage by infrared thermography image analysis

Yan SU, Fangjun HONG, Lianjie SHU

Frontiers in Energy 2020, Volume 14, Issue 4,   Pages 901-921 doi: 10.1007/s11708-020-0679-y

Abstract: A quantitative energy leakage model was developed based on the thermography image data measured for bothThe transient heat flux for sample units were obtained based on measurements of the seasonal transientenergy consumption was calculated based on the air conditioning system coefficient of performance of heatThe typical daily thermal energy leakage value in winter is the highest among the four seasons.analysis of energy leakage of buildings.

Keywords： heat conductivity     heat coefficient     heat &fllig     ux     infrared thermography     thermal image    

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Effects of radiation and heat source/sink on unsteady MHD boundary layer flow and heat transfer over

Krishnendu Bhattacharyya

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 376-384 doi: 10.1007/s11705-011-1121-0

Abstract: In this paper, an investigation is made to study the effects of radiation and heat source/sink on theThe thermal boundary layer thickness decreases with Prandtl number, radiation parameter and heat sinkparameter, but it increases with heat source parameter.Moreover, increasing unsteadiness, magnetic field strength, radiation and heat sink strength boost theheat transfer.

Keywords： MHD boundary layer     unsteady flow     heat transfer     thermal radiation     heat source/sink     shrinking sheet     suction    

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Analysis of the radiation heat transfer process of phase change for a liquid droplet radiator in space

Jinying YIN, Linhua LIU

Frontiers in Energy 2011, Volume 5, Issue 2,   Pages 166-173 doi: 10.1007/s11708-010-0105-y

Abstract: The optimization of a space power system is greatly affected by the radiation heat transfer in a liquidRadiation heat transfer in a two-dimensional bed of phase-change particle is modeled by solving the radiativeMultiple factors affect heat flux in the LDR, such as size distribution, flow velocity, phase changeSize distribution has a remarkably strong effect on heat flux when the flow velocity of the working fluidflux, whereas the thickness of the layer has a mild influence on heat flux.

Keywords： radiation heat transfer     particle polydispersion     liquid droplet radiator     phase change    

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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 thermochemicalheat transfer.The fvDOM approximation was used to obtain the radiation intensity distribution along the reactor.to the thermal non-equilibrium was observed in the radiation inlet region.This paper revealed that the temperature drop caused by the boundary radiation heat loss should not be

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

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Performance improvement of a pulse tube cryocooler with a single compressor through cascade utilization of cold energy

Xuming LIU, Xiafan XU, Biao YANG, Xiaotong XI, Liubiao CHEN, Junjie WANG, Yuan ZHOU

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 345-357 doi: 10.1007/s11708-020-0708-x

Abstract: the mW cooling capacity, hundreds or even thousands of watts of electrical power are consumed, where radiationheat leakage accounts for a large proportion of their cooling capacity.In this paper, based on SAGE10, a HPTC heat radiation calculation model was first established to studythe effects of radiation heat leakage on apparent performance parameters (such as temperature and coolingNumerical simulations indicate that the reduction of external radiation heat leakage cannot only directly

Keywords： radiation heat leakage     active thermal insulation     cascade utilization     cold energy     performance improvement    

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Numerical study of conduction and radiation heat losses from vacuum annulus in parabolic trough receivers

Dongqiang LEI, Yucong REN, Zhifeng WANG

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 1048-1059 doi: 10.1007/s11708-020-0670-7

Abstract: The heat loss of the receiver has an important influence on the thermal efficiency and the operatingIn this paper, conduction and radiation heat losses are analyzed respectively to identify the heat lossA 2-D heat transfer model is established by using the direct simulation Monte Carlo method for rarefiedgas flow and heat transfer within the annulus of the receiver to predict the conduction heat loss causedthe conduction and radiation heat losses are systematically analyzed.

Keywords： parabolic trough receiver     vacuum annulus     rarefied gas     DSMC (direct simulation Monte Carlo)     heat loss    

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Numerical and experimental analyses of methane leakage in shield tunnel

Frontiers of Structural and Civil Engineering   Pages 1011-1020 doi: 10.1007/s11709-023-0956-z

Abstract: Tunnels constructed in gas-bearing strata are affected by the potential leakage of harmful gases, suchmethane emission was diluted, and the methane accumulation was only observed in the area near the methane leakageIn addition, laboratory tests on methane leakage through segment joints were performed.The results show that the leakage process can be divided into “rapid leakage” and “slight leakage”, dependingon the leakage pressure and the state of joint deformation.

Keywords： shield tunnel     harmful gas leakage     numerical analysis     laboratory test    

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Effects of leakage and friction on the miniaturization of a Wankel compressor

Yilin ZHANG, Wen WANG

Frontiers in Energy 2011, Volume 5, Issue 1,   Pages 83-92 doi: 10.1007/s11708-010-0125-7

Abstract: The discussion is related to the effect of leakage and friction on the design limit (cooling capacityIn the simulation, the main leakage comes from the gaps between the rotor and the endplates as well asThe decreasing cooling capacity of the meso Wankel compressor increases the proportion of leakage to

Keywords： meso-scale     Wankel compressor     leakage     friction    

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Cohesive zone model-based analyses of localized leakage of segmentally lined tunnels

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 503-521 doi: 10.1007/s11709-023-0927-4

Abstract: This paper presents a novel approach for simulating the localized leakage behavior of segmentally linedThe proposed approach not only simulates localized leakage at the lining segment, but also captures thebehavior, stratum seepage field, and leakage-induced mechanical response of the tunnel lining.the leakage point and slight inward deformation at its diametrically opposite side.The seepage field depends on both the number and location of the leakage zones.

Keywords： segmentally lined tunnel     localized leakage     cohesive element     hydraulic behavior     numerical modeling    

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Long-term settlement behavior of ground around shield tunnel due to leakage of water in soft deposit

Huaina WU, Yeshuang XU, Shui-long SHEN, Jin-chun CHAI

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2,   Pages 194-198 doi: 10.1007/s11709-011-0105-y

Abstract: This paper aims to analyze the impact of the leakage of groundwater through segments on the long-term

Keywords： lining deficit     leakage of water     shield tunnel     settlement     soft deposit    

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Novel Radiation-Adjustable Heating Terminal Based on Flat Heat Pipe Combined with Air Source Heat Pump Article

Yifan Wu,Hongli Sun,Mengfan Duan,Borong Lin,Hengxin Zhao,Chaohung Liu

Engineering 2023, Volume 20, Issue 1,   Pages 192-207 doi: 10.1016/j.eng.2021.09.019

Abstract: As a clean and sustainable electrified heating technology, air-source heat pumps (ASHPs) are widely usedTherefore, this study proposes a novel radiation-adjustable heating terminal combined with an ASHP toResults showed that the maximum heating capacity increased by 23.6% and radiation heat transfer ratioFurther, new flat heat pipe (FHP) design improved stability (compressor oil return), intermittency (refrigerantthermal inertia), and safety (refrigerant leakage risk) by reducing the length of exposed refrigerant

Keywords： Novel heating terminal     Air-source heat pump     Structural improvement design     Maximum heating capacity     Rapid    

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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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Bifunctional Asymmetric Fabric with Tailored Thermal Conduction and Radiation for Personal Cooling and Article

Yucan Peng, Hiang Kwee Lee, David S. Wu, Yi Cui

Engineering 2022, Volume 10, Issue 3,   Pages 167-173 doi: 10.1016/j.eng.2021.04.016

Abstract: By improving control over the heat dissipating from the human body, personal thermal management can provideHere, we propose a facile surface modification approach to tailor the thermal conduction and radiationproperties based on commercially available fabric, to realize better management of the whole heat transportasymmetry and surface modification, the BAF demonstrates an effective cooling effect through enhanced heatconduction and radiation in the cooling mode; in the warming mode, heat dissipation along both routes

Keywords： Textiles     Personal thermal management     Bifunctional asymmetric fabric     Heat conduction     Radiative heat    

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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 control

Keywords： geoengineering     Solar Radiation Management     governance     decentralised    

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Title Author Date Type Operation

A building unit decomposition model for energy leakage by infrared thermography image analysis

Yan SU, Fangjun HONG, Lianjie SHU

Journal Article

Effects of radiation and heat source/sink on unsteady MHD boundary layer flow and heat transfer over

Krishnendu Bhattacharyya

Journal Article

Analysis of the radiation heat transfer process of phase change for a liquid droplet radiator in space

Jinying YIN, Linhua LIU

Journal Article

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

Journal Article

Performance improvement of a pulse tube cryocooler with a single compressor through cascade utilization of cold energy

Xuming LIU, Xiafan XU, Biao YANG, Xiaotong XI, Liubiao CHEN, Junjie WANG, Yuan ZHOU

Journal Article

Numerical study of conduction and radiation heat losses from vacuum annulus in parabolic trough receivers

Dongqiang LEI, Yucong REN, Zhifeng WANG

Journal Article

Numerical and experimental analyses of methane leakage in shield tunnel

Journal Article

Effects of leakage and friction on the miniaturization of a Wankel compressor

Yilin ZHANG, Wen WANG

Journal Article

Cohesive zone model-based analyses of localized leakage of segmentally lined tunnels

Journal Article

Long-term settlement behavior of ground around shield tunnel due to leakage of water in soft deposit

Huaina WU, Yeshuang XU, Shui-long SHEN, Jin-chun CHAI

Journal Article

Novel Radiation-Adjustable Heating Terminal Based on Flat Heat Pipe Combined with Air Source Heat Pump

Yifan Wu,Hongli Sun,Mengfan Duan,Borong Lin,Hengxin Zhao,Chaohung Liu

Journal Article

Particle therapy for cancers: a new weapon in radiation therapy

Guo-Liang Jiang

Journal Article

Bifunctional Asymmetric Fabric with Tailored Thermal Conduction and Radiation for Personal Cooling and

Yucan Peng, Hiang Kwee Lee, David S. Wu, Yi Cui

Journal Article

Security of solar radiation management geoengineering

Andrew LOCKLEY

Journal Article

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

Andrew LOCKLEY

Journal Article