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ZnO nanorefrigerant in R152a refrigeration system for energy conservation and green environment

D. SENDIL KUMAR,R. ELANSEZHIAN

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 1,   Pages 75-80 doi: 10.1007/s11465-014-0285-y

Abstract: The compressor suction pressure, discharge pressure and evaporator temperature were measured.The performance of the system was significantly improved with 21% less energy consumption when 0.5%vBoth the suction pressure and discharge pressure were lowered by 10.5% when nanorefrigerant was used.Hence ZnO nanoparticles could be used in refrigeration system to considerably reduce energy consumptionThe usage of R152a with zero ozone depleting potential (ODP) and very less GWP and thus provides a green

Keywords： ZnO nanorefrigerant     reduced GWP     COP     pressure ratio green energy    

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Hydraulic Pressure Extremes Ratio & Extremes Ratio Efficiencies

Qi Maolin

Strategic Study of CAE 2001, Volume 3, Issue 4,   Pages 73-75

Abstract:

This article applies basic formula to the calculation of a relationship between the hydraulic pressureextremes ratio of hydraulic system and the extremes ratio efficiencies.This relationship shows that the greater the hydraulic pressure extremes ratio is, the lower the extremesratio efficiencies are.The article holds that the hydraulic pressure extremes ratio can be designed and chosen.

Keywords： hydraulic pressure extremes ratio     extremes ratio efficiencies     hydraulic system    

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Research and Application of Engineering Water-pressure Blasting for Economizing Energy and Environmental

He Guangyi,Duan Changyan,Jing Shan,Wang Taichao

Strategic Study of CAE 2003, Volume 5, Issue 9,   Pages 43-48

Abstract:

The engineering water-pressure blasting for economizing energy and environmental protection isa newanalysis and simulation experiment of the technique have been introduced in respect of enhancing explosive energyutilization ratio and protecting environment.

Keywords： engineering water-pressure blasting     simulation experiment     energy utilization ratio    

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Improvement of engine performance with high compression ratio based on knock suppression using Millercycle with boost pressure and split injection

Haiqiao WEI, Jie YU, Lei ZHOU

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 691-706 doi: 10.1007/s11708-019-0621-3

Abstract: In theory, high compression ratio has the potential to improve the thermal efficiency and promote theHowever, the application of high compression ratio is substantially limited by the knock in practicalon a gasoline engine based on the Miller cycle with boost pressure and split injection.It was found that a high level of Miller cycle with a higher boost pressure could be used in CR12 tocompression ratio and high load.

Keywords： high compression ratio     knock     Miller cycle     split injection     engine performance    

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Effect of cutterhead configuration on tunnel face stability during shield machine maintenance outages

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 522-532 doi: 10.1007/s11709-023-0930-9

Abstract: Pressure maintenance openings are typically used under complicated hydrogeological conditions.Owing to the high risk of face failure, the necessity of support pressure when cutterhead support isimplemented and a method for determining the value of compressed air pressure using different supportThe required compressed air pressure increases significantly as the support ratio decreases.To satisfy the requirement of chamber openings at atmospheric pressure, the stratum reinforcement strength

Keywords： tunnel face stability     cutterhead configuration     aperture ratio     pressure gradient     support ratio    

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Wind tunnel test study on the wind pressure coefficient of claddings of high-rise buildings

Yong QUAN, Yi LIANG, Fei WANG, Ming GU

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 4,   Pages 518-524 doi: 10.1007/s11709-011-0128-4

Abstract: The area-averaged most unfavorable wind pressure coefficients (MUWPCs) on various regions of buildingsurfaces and the influence of the side ratio and the terrain category were studied based on wind tunnelarea-averaged MUWPCs in the middle-height edge areas generally increased with an increasing / side ratio

Keywords： side ratio     area-averaged pressure coefficients     cladding     terrain category    

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Optimal ratio of bend channel in centrifugal compressor

WEN Suping, HU Xiaowen, LI Tingbin, ZHANG Yong, WANG Jun

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 381-385 doi: 10.1007/s11708-008-0084-4

Abstract: The results indicate that there is an optimal ratio for increasing the stage efficiency to the highestThe change in ratio significantly affects the flow angle of the bend channel outlet.The prime reason for the total pressure loss in the bend channel is the wall friction in the bend channel

Keywords： specific compressor     different     centrifugal compressor     pressure     impeller    

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The Path for Green Development and Utilization of Energy in China

Li Quansheng,Zhang Kai

Strategic Study of CAE 2021, Volume 23, Issue 1,   Pages 101-111 doi: 10.15302/J-SSCAE-2021.01.012

Abstract:

The green development and utilization of energy is an important componentSubsequently, an energy green development evaluation model and an energy utilization system evaluationindex model are established to evaluate the economic and environmental benefits of the energy greenThe energy green development and utilization can be implemented from two aspects.of energy systems, particularly emphasizing green coal engineering, oil stabilization and gas enhancement

Keywords： energy     green development and utilization     energy green development evaluation model     green coal engineering     energy intelligence    

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Energy field-assisted high-speed dry milling green machining technology for difficult-to-machine metal

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0744-9

Abstract: Energy field-assisted machining technology has the potential to overcome the limitations of machiningHigh-speed dry milling has emerged as a typical green processing technology due to its high processingThe introduction of advanced energy-field-assisted green processing technology can improve the machinabilityThe laser energy field, ultrasonic energy field, and cryogenic minimum quantity lubrication energy fieldsdetail, providing feasible ideas for realizing multi-energy field collaborative green machining of difficult-to-machine

Keywords： difficult-to-machine metal material     green machining     high-speed dry milling     laser energy field-assistedmilling     ultrasonic energy field-assisted milling     cryogenic minimum quantity lubrication energy field-assisted    

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Heating energy performance and part load ratio characteristics of boiler staging in an office building

Da Young LEE, Byeong Mo SEO, Yeo Beom YOON, Sung Hyup HONG, Jong Min CHOI, Kwang Ho LEE

Frontiers in Energy 2019, Volume 13, Issue 2,   Pages 339-353 doi: 10.1007/s11708-018-0596-5

Abstract: Commercial buildings account for significant portions of the total building energy in South Korea andthus a variety of research on the boiler operation related to heating energy in office buildings hasHowever, most of the researches have been conducted on the boiler itself, i.e., the part load ratio characteristicsIn this study, the part load ratio and the operating characteristics of gas boiler have been analyzedfound to be in a part load ratio range of 0 through 40% and thus energy consumption is significantly

Keywords： EnergyPlus     boiler     part load ratio     gas consumption     office building     boiler staging    

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Investigation on the N∶P ratio varying under the blue-green alga seasonal blooming in north area of

He Feng,Duan Changqun,Du Jinsong,Han Yaping,Guo Yanying,Pan Min,Song renbin

Strategic Study of CAE 2010, Volume 12, Issue 6,   Pages 94-98

Abstract: ="text-align: justify;">For several reasons, the north area of the Dianchi Lake is prolific of blue-greenand water are not constant, and both of them have no significant ecological stoichiometry of the N∶P ratioWe also made correlation-ship analysis between the N∶P ratio of water and biomass of alga.correlation-ship between them is 0.308, which illustrats that the biomass of alga is not related to the N∶P ratioThus we can declare that there is only one most efficient way to control blue-green alga booming, to

Keywords： the Dianchi Lake     blue-green alga     the N∶P ratio     variation     ecological stoichiometry    

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Performance analysis of a novel medium temperature compressed air energy storage system based on inverter-drivencompressor pressure regulation

Frontiers in Energy doi: 10.1007/s11708-024-0921-0

Abstract: In compressed air energy storage systems, throttle valves that are used to stabilize the air storageequipment pressure can cause significant exergy losses, which can be effectively improved by adoptingIn this paper, a novel scheme for a compressed air energy storage system is proposed to realize pressureparameters such as thermal storage temperature, component isentropic efficiency, and designated discharge pressureTherefore, the system proposed offers a viable solution for optimizing compressed air energy storage

Keywords： adiabatic compressed air energy storage     throttle valve exergy loss     performance analysis     inverter-driven    

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Pressure Drop Characteristics of Flow Boiling in Microchannel With Low Aspect Ratio

Zhang Binglei,Xu Jinliang and Xiao Zejun

Strategic Study of CAE 2007, Volume 9, Issue 12,   Pages 86-93

Abstract: Pressure drops of flow boiling in a single microchannel having low aspect ratio were studied with effectsThe comparison indicates that the homogeneous flow model cannot predict the twophase pressure drop wellChisholm,Lee and Lee,Mishima,Qu and Mudawar , separated flow model also failed to predict the twophase pressurefor C which decreased with the decreasing mass flux .A new correlation to predict the twophase flow pressure.It includes the effect of the hydraulic diameter and the effect of mass flux on the twophase flow pressure

Keywords： pressure drop characteristics；homogeneous flow model；separated flow model；microchannel；flow boiling    

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Early-life famine exposure, adulthood obesity patterns, and risk of low-energy fracture

Frontiers of Medicine 2024, Volume 18, Issue 1,   Pages 192-203 doi: 10.1007/s11684-023-1023-9

Abstract: but the association of early-life undernutrition combined with adulthood obesity patterns with low-energyassessed using the body mass index (BMI), and abdominal obesity was evaluated with the waist-to-hip ratioLow-energy fracture was defined as fracture occurring after the age of 40 typically caused by falls fromfamine exposure interacts with adulthood general obesity and significantly increases the risk of low-energy

Keywords： famine     obesity     body mass index     waist-to-hip ratio     low-energy fracture    

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The Analysis on Output-input Ratio of Artificial Supplementary Energy in Agro-eco-engineering

Bian Yousheng,Liu Yingkun,Bian Jing

Strategic Study of CAE 2006, Volume 8, Issue 8,   Pages 28-32

Abstract:

The output-input ratio of the artificial Supplementary energy reflects the function and productivityThe output-input ratio for artificial supplementary energy of Henan Xinxian´10 peasant families

Keywords： agro-eco-engineering     output-input ratio of energy    

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Title Author Date Type Operation

ZnO nanorefrigerant in R152a refrigeration system for energy conservation and green environment

D. SENDIL KUMAR,R. ELANSEZHIAN

Journal Article

Hydraulic Pressure Extremes Ratio & Extremes Ratio Efficiencies

Qi Maolin

Journal Article

Research and Application of Engineering Water-pressure Blasting for Economizing Energy and Environmental

He Guangyi,Duan Changyan,Jing Shan,Wang Taichao

Journal Article

Improvement of engine performance with high compression ratio based on knock suppression using Millercycle with boost pressure and split injection

Haiqiao WEI, Jie YU, Lei ZHOU

Journal Article

Effect of cutterhead configuration on tunnel face stability during shield machine maintenance outages

Journal Article

Wind tunnel test study on the wind pressure coefficient of claddings of high-rise buildings

Yong QUAN, Yi LIANG, Fei WANG, Ming GU

Journal Article

Optimal ratio of bend channel in centrifugal compressor

WEN Suping, HU Xiaowen, LI Tingbin, ZHANG Yong, WANG Jun

Journal Article

The Path for Green Development and Utilization of Energy in China

Li Quansheng,Zhang Kai

Journal Article

Energy field-assisted high-speed dry milling green machining technology for difficult-to-machine metal

Journal Article

Heating energy performance and part load ratio characteristics of boiler staging in an office building

Da Young LEE, Byeong Mo SEO, Yeo Beom YOON, Sung Hyup HONG, Jong Min CHOI, Kwang Ho LEE

Journal Article

Investigation on the N∶P ratio varying under the blue-green alga seasonal blooming in north area of

He Feng,Duan Changqun,Du Jinsong,Han Yaping,Guo Yanying,Pan Min,Song renbin

Journal Article

Performance analysis of a novel medium temperature compressed air energy storage system based on inverter-drivencompressor pressure regulation

Journal Article

Pressure Drop Characteristics of Flow Boiling in Microchannel With Low Aspect Ratio

Zhang Binglei,Xu Jinliang and Xiao Zejun

Journal Article

Early-life famine exposure, adulthood obesity patterns, and risk of low-energy fracture

Journal Article

The Analysis on Output-input Ratio of Artificial Supplementary Energy in Agro-eco-engineering

Bian Yousheng,Liu Yingkun,Bian Jing

Journal Article