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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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Heat-spreading analysis of a heat sink base embedded with a heat pipe

B. V. BORGMEYER, H. B. MA,

Frontiers in Energy 2010, Volume 4, Issue 2,   Pages 143-148 doi: 10.1007/s11708-010-0013-1

Abstract: A simplified model predicting the heat transfer performance of a heat sink base with a high thermal conductivityThe investigation indicates that for heat sink bases with a high effective thermal conductivity, suchas the base embedded with a typical heat pipe, the entire heat sink can be modeled as a flat plate withThis simplified model can be used to determine the heat transfer performance of a heat sink embeddedwith a typical heat pipe or vapor chamber.

Keywords： heat pipe     heat sink     microprocessor heat removal    

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Effect of / molecular structures on pyrolysis performance and heat sink of decalin isomers

Frontiers of Chemical Science and Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11705-023-2375-z

Abstract: two isomers with a tunable composition, and their effects on the pyrolysis performance, such as the heatsink and coking tendency have not been demonstrated.Additionally, the heat sinks and coking tendencies of the decalins decreased in the order cis-

Keywords： endothermic fuel     decalin     pyrolysis     heat sink     molecular structure    

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CO capture and sequestration source-sink match optimization in Jing-Jin-Ji region of China

Zhong ZHENG , Dan GAO , Linwei MA , Zheng LI , Weidou NI ,

Frontiers in Energy 2009, Volume 3, Issue 3,   Pages 359-368 doi: 10.1007/s11708-009-0053-6

Abstract: A key problem for the implementation of CCS technology is the source-sink match design and optimizationpaper presents a generic-optimization-based model for the strategic planning and design of future CCS source-sinkIt shows how the model helps make a compromise in arriving at a strategic decision for CCS source-sink

Keywords： CO2 capture and sequestration     China     source-sink match     tradeoff frontiers     multi-objective optimization    

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Flow and thermal modeling of liquid metal in expanded microchannel heat sink

Frontiers in Energy   Pages 796-810 doi: 10.1007/s11708-023-0877-5

Abstract: in an excessive temperature rise of coolant and heat sink when dealing with high-power heat dissipation, reducing the temperature rise of coolant and heat sink.The flow and thermal modeling of expanded microchannel heat sink (E-MCHS) were analyzed by both usingsink length.The expanded space endowed the heat sink with lower pressure, which might further reduce the pumping

Keywords： liquid metal cooling     heat sink     expanded microchannel     flow and thermal modeling    

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High heat flux thermal management through liquid metal driven with electromagnetic induction pump

Frontiers in Energy 2022, Volume 16, Issue 3,   Pages 460-470 doi: 10.1007/s11708-022-0825-9

Abstract: In this paper, a novel liquid metal-based minichannel heat dissipation method was developed for coolingelectric devices with high heat flux.> with keeping the temperature rise of the heat source below 50°C.Moreover, thermal contact resistance has a critical importance for the heat dissipation capacity.power and high heat flux.

Keywords： high heat flux     liquid metal     electromagnetic pump     minichannel heat sink     thermal interface material    

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Performance analysis of an air-source heat pump using an immersed water condenser

Jie JI, Huide FU, Hanfeng HE, Gang PEI,

Frontiers in Energy 2010, Volume 4, Issue 2,   Pages 234-245 doi: 10.1007/s11708-009-0056-3

Abstract: A distributed model of an air-source heat pump (ASHP) system and its experimental setup using an immersedtheoretical and experimental background for ASHP system optimization and a valuable reference for a solar air-sourceheat pump water heater when the solar irradiation energy is insufficient on cloudy or rainy days.

Keywords： air-source     heat pump     distributed model     immersed water condenser    

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Optimization model analysis of centralized groundwater source heat pump system in heating season

Shilei LU,Yunfang QI,Zhe CAI,Yiran LI

Frontiers in Energy 2015, Volume 9, Issue 3,   Pages 343-361 doi: 10.1007/s11708-015-0372-8

Abstract: The ground-water heat-pump system (GWHP) provides a high efficient way for heating and cooling whileFirst, the groundwater thermal transfer calculation under slow heat transfixion and transient heat transfixionwas established by calculating the heat transfer simulation software Flow Heat and using correctionforward in this paper has an important guiding significance to the actual operation of underground water sourceheat pump.

Keywords： optimization model     groundwater source heat pump system     theoretical analysis     example verification     heating    

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Optimisation for interconnected energy hub system with combined ground source heat pump and borehole

Da HUO, Wei WEI, Simon Le BLOND

Frontiers in Energy 2018, Volume 12, Issue 4,   Pages 529-539 doi: 10.1007/s11708-018-0580-0

Abstract: Ground source heat pumps (GSHP) give zero-carbon emission heating at a residential level.However, as the heat is discharged, the temperature of the ground drops, leading to a poorer efficiencycombined heating system is incorporated into the interconnected multi-carrier system to support the heat

Keywords： borehole thermal storage     energy hub     ground source heat pumps (GSHP)     particle swarm optimisation    

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pumping analysis and experimental validation of beach well infiltration intake system in a seawater sourceheat pump system

Huan ZHANG,Shu LIU,Xuejing ZHENG,Gaofeng CHEN

Frontiers in Energy 2015, Volume 9, Issue 3,   Pages 335-342 doi: 10.1007/s11708-015-0365-7

Abstract: equation and Darcy’s law, a model of beach well infiltration intake system applied in a seawater sourceheat pump system was established.The model consists of the seawater seepage and the heat transfer process.A porous medium model in a software named FLUENT was applied to simulate the seepage and the heat transferimpervious boundary becomes longer, when the distance between the beach well and the supplying water source

Keywords： water pumping analysis     experimental validation     infiltration intake system     seawater source heat pump    

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Construction and Application of a Regional Kilometer-Scale Carbon Source and Sink Assimilation Inversion

Lifeng Guo,Xiaoye Zhang,Junting Zhong,Deying Wang,Changhong Miao,Licheng Zhao,Zijiang Zhou,Jie Liao,Bo Hu,Lingyun Zhu,Yan Chen,

Engineering doi: 10.1016/j.eng.2023.02.017

Abstract: CO2 is one of the most important greenhouse gases (GHGs) in the earth’s atmosphere. Since the industrial era, anthropogenic activities have emitted excessive quantities of GHGs into the atmosphere, resulting in climate warming since the 1950s and leading to an increased frequency of extreme weather and climate events. In 2020, China committed to striving for carbon neutrality by 2060. This commitment and China’s consequent actions will result in significant changes in global and regional anthropogenic carbon emissions and therefore require timely, comprehensive, and objective monitoring and verification support (MVS) systems. The MVS approach relies on the top-down assimilation and inversion of atmospheric CO2 concentrations, as recommended by the Intergovernmental Panel on Climate Change (IPCC) Inventory Guidelines in 2019. However, the regional high-resolution assimilation and inversion method is still in its initial stage of development. Here, we have constructed an inverse system for carbon sources and sinks at the kilometer level by coupling proper orthogonal decomposition (POD) with four-dimensional variational (4DVar) data assimilation based on the weather research and forecasting–greenhouse gas (WRF–GHG) model. Our China Carbon Monitoring and Verification Support at the Regional level (CCMVS-R) system can continuously assimilate information on atmospheric CO2 and other related information and realize the inversion of regional and local anthropogenic carbon emissions and natural terrestrial ecosystem carbon exchange. Atmospheric CO2 data were collected from six ground-based monitoring sites in Shanxi to verify the inversion effect of regional anthropogenic carbon emissions by setting ideal and real experiments using a two-layer nesting method (at 27 km and 9 km). The uncertainty of the simulated atmospheric CO2 decreased significantly, with a root-mean-square error of CO2 concentration values between the ideal value and the simulated after assimilation was close to 0. The total anthropogenic carbon emissions in Shanxi Province in 2019 from the assimilated inversions were approximately 28.6% (17%–38%) higher than the mean of five emission inventories using the bottom-up method, showing that the top-down CCMVS-R system can obtain more comprehensive information on anthropogenic carbon emissions.

Keywords： CCMVS-R     Regional carbon assimilation system     Anthropogenic carbon emissions     CO2     POD 4DVar    

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R&D of the ground-coupled heat pump technology in China

Nairen DIAO, Ping CUI, Junhong LIU, Zhaohong FANG,

Frontiers in Energy 2010, Volume 4, Issue 1,   Pages 47-54 doi: 10.1007/s11708-009-0080-3

Abstract: The ground-coupled heat pump (GCHP) systems have been identified as one of the best sustainable energyNew models are presented for efficient thermal analysis of ground heat exchangers, of which one- andtwo-dimensional solid cylindrical source models and their analytical solutions are devised to deal withpile ground heat exchangers.Analytical solutions are also derived for vertical and inclined finite line source models as well as

Keywords： ground source heat pump     ground heat exchanger     HVAC     China    

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The Assessment of the Impacts of Land Use Change on the Ecosystem Carbon Sink

Wu Jianguo,Zhang Xiaoquan,Xu Deying

Strategic Study of CAE 2003, Volume 5, Issue 9,   Pages 65-71

Abstract: carbon cycle under different ecosystem in Liupan mountain forest zone and the conception of carbon sinkand source , the impacts of land use change on the carbon sink of ecosystem were assessed.It is found that the function of ecosystem carbon source or sink under different land uses includes carbonNatural secondary forest ecosystem is strong carbon sink, while plantation ecosystem is weak carbon sink, and cropland or rangeland ecosystem is source.

Keywords： land use change     soil organic carbon     carbon cycle     ecosystem carbon sink/source    

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Research on low carbon management using a scientific classification method

Shanna QI, Meiting JU, Meng DUAN, Wei XING

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 4,   Pages 524-530 doi: 10.1007/s11783-011-0333-3

Abstract: This research is aimed at the rapid development of a low-carbon economy, in which we propose the classification and application of relevant management measures to affect the development of environmental management ideas and measures of the low-carbon economy, which we called as low carbon management measures. According to scientific analysis of the low-carbon economy, we can divide low-carbon management measures into three parts: measures for reduction of carbon sources, carbon flow planning, and increase of carbon sinks. Furthermore, we list the advantages that China can utilize to develop its own low-carbon management measures. In the end, necessary adjustments to environmental management measures in China can be made according to this scientific classification.

Keywords： low-carbon economy     low carbon management     carbon source     carbon flow     carbon sink    

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Strategy for Carbon Sink and Its Amplification in Marine Fisheries

Tang Qisheng and Liu Hui

Strategic Study of CAE 2016, Volume 18, Issue 3,   Pages 68-73 doi: 10.15302/J-SSCAE-2016.03.011

Abstract:

The concepts of the marine fisheries carbon sink and carbon sink fisheries current state of researchCompared to forestry carbon sequestration, marine fisheries carbon sink is characterized by both high: investigating the potential and mechanisms for marine fisheries carbon sink; vigorously developingcarbon sink fisheries of which the principal part is aquaculture; strengthening the conservation andmanagement of natural carbon sink and environment of China's seas; implementing fisheries carbon

Keywords： marine fisheries carbon sink     carbon sink fisheries     carbon sink amplification     conservation and management    

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Title Author Date Type Operation

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

Krishnendu Bhattacharyya

Journal Article

Heat-spreading analysis of a heat sink base embedded with a heat pipe

B. V. BORGMEYER, H. B. MA,

Journal Article

Effect of / molecular structures on pyrolysis performance and heat sink of decalin isomers

Journal Article

CO capture and sequestration source-sink match optimization in Jing-Jin-Ji region of China

Zhong ZHENG , Dan GAO , Linwei MA , Zheng LI , Weidou NI ,

Journal Article

Flow and thermal modeling of liquid metal in expanded microchannel heat sink

Journal Article

High heat flux thermal management through liquid metal driven with electromagnetic induction pump

Journal Article

Performance analysis of an air-source heat pump using an immersed water condenser

Jie JI, Huide FU, Hanfeng HE, Gang PEI,

Journal Article

Optimization model analysis of centralized groundwater source heat pump system in heating season

Shilei LU,Yunfang QI,Zhe CAI,Yiran LI

Journal Article

Optimisation for interconnected energy hub system with combined ground source heat pump and borehole

Da HUO, Wei WEI, Simon Le BLOND

Journal Article

pumping analysis and experimental validation of beach well infiltration intake system in a seawater sourceheat pump system

Huan ZHANG,Shu LIU,Xuejing ZHENG,Gaofeng CHEN

Journal Article

Construction and Application of a Regional Kilometer-Scale Carbon Source and Sink Assimilation Inversion

Lifeng Guo,Xiaoye Zhang,Junting Zhong,Deying Wang,Changhong Miao,Licheng Zhao,Zijiang Zhou,Jie Liao,Bo Hu,Lingyun Zhu,Yan Chen,

Journal Article

R&D of the ground-coupled heat pump technology in China

Nairen DIAO, Ping CUI, Junhong LIU, Zhaohong FANG,

Journal Article

The Assessment of the Impacts of Land Use Change on the Ecosystem Carbon Sink

Wu Jianguo,Zhang Xiaoquan,Xu Deying

Journal Article

Research on low carbon management using a scientific classification method

Shanna QI, Meiting JU, Meng DUAN, Wei XING

Journal Article

Strategy for Carbon Sink and Its Amplification in Marine Fisheries

Tang Qisheng and Liu Hui

Journal Article