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Piezoelectric inertial robot for operating in small pipelines based on stick-slip mechanism: modeling

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0697-z

Abstract: A piezoelectric inertial pipeline robot using a “stick-slip” mechanism was proposed to address this requirementand the LuGre friction model, and the simulation analysis of the effect of system parameters on the operatingExperimental results show that the proposed pipeline robot with inertial stick-slip mechanism has a great

Keywords： pipeline robot     piezoelectric     inertial drive     stick-slip     large load capacity     dynamics model     small pipeline    

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Operating mechanism and set pair analysis model of a sustainable water resources system

Chaoyang DU,Jingjie YU,Huaping ZHONG,Dandan WANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2,   Pages 288-297 doi: 10.1007/s11783-014-0642-4

Abstract: This paper presents a sustainable water resources system (SWRS) and analyzes the operating mechanismThe SWRS’s operating mechanism is composed of dynamic, resistance and coordination components, and itmeasure the state of a SWRS, and an evaluation index system is established using the subsystems and operatingmechanism of a SWRS.

Keywords： sustainable water resources system     operating mechanism     set pair analysis model     Shanghai    

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Identification of abnormal operating conditions and intelligent decision system

Xiuliang LI, Junjie JIANG, Hongye SU, Jian CHU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 456-462 doi: 10.1007/s11465-011-0224-0

Abstract: state” is difficult to form using the soil dug in the capsule because it can cause three abnormal operatingThese abnormal operating conditions can, in turn, trigger failure in tunneling, cutter-device damage,This present paper effectively integrates the mechanism of abnormal operating conditions and knowledge

Keywords： earth pressure balance (EPB) shield machine     soil pressure cabin     abnormal operating condition     belief rule-base    

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Experimental study on influence of operating parameters on tar components from corn straw gasification

Shuai GUO, Xiao WEI, Deyong CHE, Hongpeng LIU, Baizhong SUN

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 374-383 doi: 10.1007/s11708-020-0710-3

Abstract: Gasification is a promising approach for converting solid fuel sources, including renewable ones like biomass, for use. The main problem in biomass gasification is the formation of condensable tars, including polycyclic aromatic hydrocarbons (PAHs). This paper investigated the conversion of tar components during corn straw gasification. It analyzed collected tar components using a gas chromatograph-mass spectrograph (GC-MS). Experimental results indicate that, with increasing temperature from 700°C to 900°C, the concentrations of benzene, indene, phenanthrene, naphthalene, acenaphthylene, fluorene, and pyrene increased whereas those of toluene, phenol, 1-methylnaphthalene, and 2-methylnaphthalene decreased. As the equivalence ratio (ER) increased from 0.21 to 0.34, the concentrations of indene and phenanthrene increased from 0.148% and 0.087% to 0.232% and 0.223%, respectively. Further, the phenol content increased as ER increased from 0.21 to 0.26 and then decreased as the ER increased further to 0.34. Other parameters like the steam/biomass (S/B) ratio and catalyst also played a critical role in tar reduction. This paper demonstrates the conversion of some tar components and elucidates their chemical properties during gasification.

Keywords： gasification     tar components     operating parameters    

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Prevention of surgical site infection under different ventilation systems in operating room environment

Zhijian Liu, Haiyang Liu, Hang Yin, Rui Rong, Guoqing Cao, Qihong Deng

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 3, doi: 10.1007/s11783-020-1327-9

Abstract: Biological particles in the operating room (OR) air environment can cause surgical site infections (SSIseffective ventilation system among the four ventilation systems for ensuring air cleanliness in the operatingThis study also indicated that air cleanliness in the operating area depended not only on the airflow

Keywords： Operating room (OR)     Bacteria-carrying particles (BCPs)     Surgical site infections (SSIs)     Ventilation    

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Effects of operating conditions on membrane charge property and nanofiltration

Li XU, Li-Shun DU, Jing HE

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4,   Pages 492-499 doi: 10.1007/s11705-011-1143-7

Abstract: The effects of the operating pressure, cross flow velocity, feed concentration, and temperature on theThe permeate flux and the retention rate under different nanofiltration operating conditions were alsoThe effects of the operating conditions on the permeate flux and the retention rate were explained by

Keywords： nanofiltration membrane     streaming potential     Zeta potential     permeate flux     retention rate    

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Intelligent technologies help operating mobile cabin hospitals effectively cope with COVID-19

Ying ZHOU, Lingling WANG, Lieyun DING, Zhouping TANG

Frontiers of Engineering Management 2020, Volume 7, Issue 3,   Pages 459-460 doi: 10.1007/s42524-020-0113-5

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Applying the multi-zone model in predicting the operating range of HCCI engines

Ming JIA, Maozhao XIE, Zhijun PENG,

Frontiers in Energy 2010, Volume 4, Issue 3,   Pages 414-423 doi: 10.1007/s11708-010-0108-8

Abstract: In this paper, a multi-zone model is developed to predict the operating range of homogeneous charge compressionThe boundaries of the operating range were determined by knock (presented by ringing intensity), partialsatisfactory agreement with measurements made under different initial temperatures and equivalence ratios; the operatingFurthermore, the model was applied to predict the operating range of the HCCI engine under differentThe potential to extend the operating range of the HCCI engine through two strategies, i.e., variable

Keywords： homogeneous charge compression ignition (HCCI) engine     multi-zone     operating range    

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Experimental investigations on operating characteristics of a closed loop pulsating heat pipe

Yu WANG

Frontiers in Energy 2015, Volume 9, Issue 2,   Pages 134-141 doi: 10.1007/s11708-015-0354-x

Abstract: The operating mechanism of the pulsating heat pipe (PHP) is not well understood and the present technologyThe operating characteristics were studied for the variation of heat input, filling ratio (FR) and inclination

Keywords： closed loop pulsating heat pipe     thermal performance     operation limit     thermography    

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A rank-based multiple-choice secretary algorithm for minimising microgrid operating cost under uncertainties

Frontiers in Energy 2023, Volume 17, Issue 2,   Pages 198-210 doi: 10.1007/s11708-023-0874-8

Abstract: multiple-choice secretary algorithm (RMSA) was proposed for microgrid management, to reduce the microgrid operatingThe RMSA enables a microgrid to reduce the operating cost by determining the best electricity purchase

Keywords： energy management systems     demand response     scheduling under uncertainty     renewable energy sources     multiple-choice secretary algorithm    

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Performance and emission characteristics of a diesel engine operating on different water in diesel emulsion

Seyed Saeed HOSEINI, Mohammad Amin SOBATI

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 636-657 doi: 10.1007/s11708-019-0646-7

Abstract: The nitrogen oxide (NO ) release of diesel engines can be reduced using water in diesel emulsion fuel without any engine modification. In the present paper, different formulations of water in diesel emulsion fuels were prepared by ultrasonic irradiation. The water droplet size in the emulsion, polydisperisty index, and the stability of prepared fuel was examined, experimentally. Afterwards, the performance characteristics and exhaust emission of a single cylinder air-cooled diesel engine were investigated using different water in diesel emulsion fuels. The effect of water content (in the range of 5%–10% by volume), surfactant content (in the range of 0.5%–2% by volume), and hydrophilic-lipophilic balance (HLB) (in the range of 5–8) was examined using Box-Behnken design (BBD) as a subset of response surface methodology (RSM). Considering multi-objective optimization, the best formulation for the emulsion fuel was found to be 5% water, 2% surfactant, and HLB of 6.8. A comparison was made between the best emulsion fuel and the neat diesel fuel for engine performance and emission characteristics. A considerable decrease in the nitrogen oxide emission (–18.24%) was observed for the best emulsion fuel compared to neat diesel fuel.

Keywords： water in diesel emulsion fuel     hydrophilic-lipophilic balance (HLB)     response surface methodology (RSM)     emulsion stability     engine performance     exhaust emission    

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Optimization for operating modes based on simulation of seasonal underground thermal energy storage

ZHAO Jun, CHEN Yan, LI Xinguo

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 298-301 doi: 10.1007/s11708-008-0053-y

Abstract: A simulation was performed, which concerned the feasibility of seasonal underground thermal energy storage (UTES) in Tianjin, China. The investigated system consisted of 8 boreholes. In summer, residual solar thermal energy was emitted into the soil surrounding the borehole heat exchangers through which the stored energy was extracted in winter with a ground coupled heat pump (GCHP) to provide a proper heating temperature. A simulation study was performed to study the influence of system operation modes on thermal recovery based on the experimental data of a GCHP system, local meteorological conditions and soil properties in Tianjin. The results indicate a thermal recovery ratio of less than 67% and different temperature distributions under three modes. Finally, an operation mode was suggested based on both lower loss and better thermal recovery in the UTES.
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Wastewater-nitrogen removal using polylactic acid/starch as carbon source: Optimization of operating

Yan GUO, Chuanfu WU, Qunhui WANG, Min YANG, Qiqi HUANG, Markus MAGEP, Tianlong ZHENG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0845-y

Abstract: The influence of different operating parameters on responses was verified using RSM.The exclusive and interactive influences of operating parameters (i.e., temperature, pH, stirring rateThe sensitivity of , , and to different operating parameters also differed.

Keywords： Nitrogen removal     Polylactic acid     Starch     Carbon source     Response surface methodology    

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Ignition delay of dual fuel engine operating with methanol ignited by pilot diesel

ZOU Hongbo, WANG Lijun, LIU Shenghua, LI Yu

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 285-290 doi: 10.1007/s11708-008-0060-z

Abstract: An investigation on the ignition delay of a dual fuel engine operating with methanol ignited by pilotspeed, the ignition delay of the dual fuel engine by time scale (ms) decreases clearly under all engine operating
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Experimental research on dynamic operating characteristics of a novel silica gel-water adsorption chiller

WANG Dechang, WU Jingyi, WANG Ruzhu, DOU Weidong

Frontiers in Energy 2007, Volume 1, Issue 3,   Pages 347-351 doi: 10.1007/s11708-007-0052-4

Abstract: The dynamic operating characteristics of the chiller and the thermodynamic characteristics of the adsorberThe experimental results show that the dynamic operating characteristics of the chiller and the thermodynamic

Keywords： satisfactory     suitable     recovery     adsorption capacity     thermodynamic    

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Title Author Date Type Operation

Piezoelectric inertial robot for operating in small pipelines based on stick-slip mechanism: modeling

Journal Article

Operating mechanism and set pair analysis model of a sustainable water resources system

Chaoyang DU,Jingjie YU,Huaping ZHONG,Dandan WANG

Journal Article

Identification of abnormal operating conditions and intelligent decision system

Xiuliang LI, Junjie JIANG, Hongye SU, Jian CHU

Journal Article

Experimental study on influence of operating parameters on tar components from corn straw gasification

Shuai GUO, Xiao WEI, Deyong CHE, Hongpeng LIU, Baizhong SUN

Journal Article

Prevention of surgical site infection under different ventilation systems in operating room environment

Zhijian Liu, Haiyang Liu, Hang Yin, Rui Rong, Guoqing Cao, Qihong Deng

Journal Article

Effects of operating conditions on membrane charge property and nanofiltration

Li XU, Li-Shun DU, Jing HE

Journal Article

Intelligent technologies help operating mobile cabin hospitals effectively cope with COVID-19

Ying ZHOU, Lingling WANG, Lieyun DING, Zhouping TANG

Journal Article

Applying the multi-zone model in predicting the operating range of HCCI engines

Ming JIA, Maozhao XIE, Zhijun PENG,

Journal Article

Experimental investigations on operating characteristics of a closed loop pulsating heat pipe

Yu WANG

Journal Article

A rank-based multiple-choice secretary algorithm for minimising microgrid operating cost under uncertainties

Journal Article

Performance and emission characteristics of a diesel engine operating on different water in diesel emulsion

Seyed Saeed HOSEINI, Mohammad Amin SOBATI

Journal Article

Optimization for operating modes based on simulation of seasonal underground thermal energy storage

ZHAO Jun, CHEN Yan, LI Xinguo

Journal Article

Wastewater-nitrogen removal using polylactic acid/starch as carbon source: Optimization of operating

Yan GUO, Chuanfu WU, Qunhui WANG, Min YANG, Qiqi HUANG, Markus MAGEP, Tianlong ZHENG

Journal Article

Ignition delay of dual fuel engine operating with methanol ignited by pilot diesel

ZOU Hongbo, WANG Lijun, LIU Shenghua, LI Yu

Journal Article

Experimental research on dynamic operating characteristics of a novel silica gel-water adsorption chiller

WANG Dechang, WU Jingyi, WANG Ruzhu, DOU Weidong

Journal Article