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Equivalent thermal conductivity of heat pipes

LU Zesheng, MA Binghui

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 462-466 doi: 10.1007/s11465-008-0087-1

Abstract: A heat pipe working based on phase transitions of the inner working liquid transfers heat with high efficiencyIn mechanics, applications of heat pipes are correspondingly less.during the heat transfer process because thermal conductivity or equivalent thermal conductivity shouldAn equivalent thermal conductivity model based on equivalent thermal resistances is established.efficiency of the equivalent thermal conductivity model.

Keywords： proposed     distortion analysis     hydrostatic motorized     motorized spindle     Performance    

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Characterization of 3D microstructure, thermal conductivity, and heat flow of cement-based foam using

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 643-651 doi: 10.1007/s11709-021-0709-9

Abstract: This study presents the results of the 3D microstructure, thermal conductivity, and heat flow in cement-basedMoreover, a difference of 5% was noticed between the experimentally measured thermal conductivity andThe 3D model showed that heat flows through the cement paste solids and with an increase in porosity

Keywords： 3D pore volume distribution     X-ray tomography     3D shape factor     heat flow    

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Analysis of flow and heat transfer characteristics of porous heat-storage wall in greenhouse

OUYANG Li, LIU Wei

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 406-409 doi: 10.1007/s11708-008-0094-2

Abstract: The flow and heat transfer characteristics of porous heat-storage wall in greenhouse are studied by usingThe results show that the heat exchange between the air and the solid matrix of the porous heat-storagedepends upon the inlet air velocity, the porosity and the permeability of porous medium, and the thermal conductivityBecause the incidence of solar radiation on the porous heat-storage wall is not uniform, the new composite

Keywords： incidence     thermal conductivity     heat-storage     exchange     composite    

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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: The transient heat flux for sample units were obtained based on measurements of the seasonal transientlocal temperature differences and calculations of the effective thermal conductivity from the multiple-layerenergy consumption was calculated based on the air conditioning system coefficient of performance of heat

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

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Preparation, with graphene, of novel biomimetic self-healing microcapsules with high thermal stability and conductivity

Frontiers of Structural and Civil Engineering   Pages 1188-1198 doi: 10.1007/s11709-023-0027-5

Abstract: This paper reports a comparative study of microcapsules with enhanced thermal stability and electrical conductivityThe proportion of graphene in the microcapsule shell can regulate the microcapsule’s heat resistanceAdditionally, the microcapsules’ electrical conductivity is relatively high.

Keywords： graphene     microcapsule     bitumen     heat insulation     conductivity    

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Activated carbon induced oxygen vacancies-engineered nickel ferrite with enhanced conductivity for supercapacitor

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2088-2100 doi: 10.1007/s11705-023-2352-6

Abstract: Activated carbon induced oxygen vacancies-engineered nickel ferrite with enhanced conductivity for supercapacitor

Keywords： nickel ferrite conductivity     carbon oxygen vacancies    

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Permeability and thermal conductivity of host compressed natural graphite for consolidated activated

Bo TIAN, Liwei WANG, Zhequan JIN, Ruzhu WANG

Frontiers in Energy 2011, Volume 5, Issue 2,   Pages 159-165 doi: 10.1007/s11708-011-0145-y

Abstract: Permeability and thermal conductivity test units were set up to study the heat and mass transfer performanceusing steady-state heat source method.Then the thermal conductivity and permeability of granular AC were researched.This means that the thermal conductivity was not related to the grain size of AC.Such a result showed that CENG was a promising host material for AC to improve the heat transfer performance

Keywords： permeability     thermal conductivity     expanded nature graphite     activated carbon    

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Tailoring electrical conductivity of two dimensional nanomaterials using plasma for edge electronics:

Aswathy Vasudevan, Vasyl Shvalya, Aleksander Zidanšek, Uroš Cvelbar

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 427-443 doi: 10.1007/s11705-019-1805-4

Abstract: The possibility of tailoring electrical conductivity at the atomic level allows creating new prospective

Keywords： graphene     edge electronics     2D nanomaterials     plasma     electrical conductivity    

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Modeling of ion conductivity in Nafion membranes

YANG Zhen, PENG Xiaofeng, WANG Buxuan, DUAN Yuanyuan, LEE Duujong

Frontiers in Energy 2007, Volume 1, Issue 1,   Pages 58-66 doi: 10.1007/s11708-007-0005-y

Abstract: An expression was derived for ionic conductivity incorporating the influence of surface resistance.lattice model for a spatial cluster distribution was used to modify the effect of water content on ionic conductivity

Keywords： face-centered     polymeric     theoretical investigation     conduction     equivalent    

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phosphorus-nitrogen based flame retardant and multi-walled carbon nanotubes for enhanced electrical conductivity

Yong Luo, Yuhui Xie, Renjie Chen, Ruizhi Zheng, Hua Wu, Xinxin Sheng, Delong Xie, Yi Mei

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 5,   Pages 1332-1345 doi: 10.1007/s11705-021-2035-0

Abstract: Design and exploitation of flame retardant polymers with high electrical conductivity are desired forThe electrical conductivity, mechanical properties, thermal performance, and flame retardancy of theretardant remarkably enhances the flame retardancy of matrixes with an observed decrease of the peak heatrelease rate and total heat release of 49.8% and 51.9%, respectively.This study provides a new and effective methodology to substantially enhance the electrical conductivity

Keywords： MWCNTs     PEPA     electrical conductivity     flame retardant     low density polyethylene    

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Absorption heat pump for waste heat reuse: current states and future development

Zhenyuan XU, Ruzhu WANG

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 414-436 doi: 10.1007/s11708-017-0507-1

Abstract: In this paper, three important aspects for absorption heat pump for waste heat reuse are reviewed.In the first part, different absorption heat pump cycles are classified and introduced.Absorption heat pumps for heat amplification and absorption heat transformer for temperature upgradingIn the third part, the applications of the absorption heat pump and absorption heat transformer for wasteheat reuse in different industries are introduced.

Keywords： absorption     heat pump     heat transformer     waste heat     working pair    

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Ultrafast-laser-treated poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) electrodes with enhanced conductivity

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 206-216 doi: 10.1007/s11705-022-2203-x

Abstract: However, it requires doping and post-solvent treatment to improve its conductivity, and the chemicalsroute for exploiting ultrafast lasers (femtosecond and picosecond laser) to simultaneously enhance the conductivityThe conductivity of the PEDOT:PSS film was improved by three orders of magnitude (from 3.1 to 1024 S·decreased, which is beneficial to the carrier mobility, resulting in significantly enhanced electrical conductivity

Keywords： PEDOT:PSS     ultrafast laser     transparent electrode     ST-PSCs     patterning    

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Largely reduced cross-plane thermal conductivity of nanoporous In

Dongchao XU, Quan WANG, Xuewang WU, Jie ZHU, Hongbo ZHAO, Bo XIAO, Xiaojia WANG, Xiaoliang WANG, Qing HAO

Frontiers in Energy 2018, Volume 12, Issue 1,   Pages 127-136 doi: 10.1007/s11708-018-0519-5

Abstract: thermoelectric performance can be obtained by combining both the dramatically reduced lattice thermal conductivityconventional Si Ge alloys; however, a high ZT is hindered by their intrinsically high lattice thermal conductivityThis indicates that a significant amount of heat inside these alloys is still carried by phonons with

Keywords： nanoporous film     thermoelectrics     phonon     mean free path     diffusive scattering    

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Experimental research on thermal transport properties of crystallized palladium-based alloys

Siyuan CHENG, Xuguo SHI, Weigang MA, Xing ZHANG, Guanglai LIU, Mingxiang PAN, Weihua WANG

Frontiers in Energy 2018, Volume 12, Issue 1,   Pages 121-126 doi: 10.1007/s11708-018-0531-9

Abstract: , electrical conductivity, and Seebeck coefficient of crystallized Pd Ni Cu P and Pd Ni Cu P alloysThe results show that compared to amorphous samples, the thermal conductivity and electrical conductivityThe ratio of crystallized and amorphous thermal conductivity is higher for Pd Ni Cu P alloy fiber whichhas a higher glass forming ability, while the ratio of electronic thermal conductivity almost remainsThe sensitivity of thermal conductivity and electrical conductivity to the composition is high, while

Keywords： palladium-based alloy     T-type method     thermal conductivity     electrical conductivity     Seebeck coefficient    

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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 theunsteady boundary layer flow and heat transfer past a shrinking sheet with suction/injection.The thermal boundary layer thickness decreases with Prandtl number, radiation parameter and heat sinkparameter, but it increases with heat source parameter.heat transfer.

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

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Title Author Date Type Operation

Equivalent thermal conductivity of heat pipes

LU Zesheng, MA Binghui

Journal Article

Characterization of 3D microstructure, thermal conductivity, and heat flow of cement-based foam using

Journal Article

Analysis of flow and heat transfer characteristics of porous heat-storage wall in greenhouse

OUYANG Li, LIU Wei

Journal Article

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

Yan SU, Fangjun HONG, Lianjie SHU

Journal Article

Preparation, with graphene, of novel biomimetic self-healing microcapsules with high thermal stability and conductivity

Journal Article

Activated carbon induced oxygen vacancies-engineered nickel ferrite with enhanced conductivity for supercapacitor

Journal Article

Permeability and thermal conductivity of host compressed natural graphite for consolidated activated

Bo TIAN, Liwei WANG, Zhequan JIN, Ruzhu WANG

Journal Article

Tailoring electrical conductivity of two dimensional nanomaterials using plasma for edge electronics:

Aswathy Vasudevan, Vasyl Shvalya, Aleksander Zidanšek, Uroš Cvelbar

Journal Article

Modeling of ion conductivity in Nafion membranes

YANG Zhen, PENG Xiaofeng, WANG Buxuan, DUAN Yuanyuan, LEE Duujong

Journal Article

phosphorus-nitrogen based flame retardant and multi-walled carbon nanotubes for enhanced electrical conductivity

Yong Luo, Yuhui Xie, Renjie Chen, Ruizhi Zheng, Hua Wu, Xinxin Sheng, Delong Xie, Yi Mei

Journal Article

Absorption heat pump for waste heat reuse: current states and future development

Zhenyuan XU, Ruzhu WANG

Journal Article

Ultrafast-laser-treated poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) electrodes with enhanced conductivity

Journal Article

Largely reduced cross-plane thermal conductivity of nanoporous In

Dongchao XU, Quan WANG, Xuewang WU, Jie ZHU, Hongbo ZHAO, Bo XIAO, Xiaojia WANG, Xiaoliang WANG, Qing HAO

Journal Article

Experimental research on thermal transport properties of crystallized palladium-based alloys

Siyuan CHENG, Xuguo SHI, Weigang MA, Xing ZHANG, Guanglai LIU, Mingxiang PAN, Weihua WANG

Journal Article

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

Krishnendu Bhattacharyya

Journal Article