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Exhaust hood for steam turbines-single-flow arrangement

Michal HOZNEDL , Ladislav TAJC , Jaroslav KREJCIK , Lukas BEDNAR , Kamil SEDLAK , Jiri LINHART ,

Frontiers in Energy 2009, Volume 3, Issue 3,   Pages 321-329 doi: 10.1007/s11708-009-0039-4

Abstract: In the past, increased attention was given to the development of an optimal shape for the inlet part of LP turbine casings in SKODA POWER. A double-flow design is typically used for high power output turbines. An optimized shape for the internal diffuser has been found, which transforms the kinetic energy of steam into increased pressure, thus effectively increasing the thermodynamic efficiency of the stage. Some conclusions have been drawn from laboratory experiments, others derived directly from on-site measurements at power plants. The conclusions from the development of double-flow turbines form the basis for the design of the single-flow turbine arrangement. Single-flow design is typically used for lower output turbines. There are still some limitations in applying this arrangement. The designer needs to resolve the bearing position and how to ensure access to them. Reinforcing the ribs and supports are used, therefore, to ensure the rigidity of the entire casing. The optimization of the single-flow diffuser shape is therefore the subject of the study presented below.

Keywords： exhaust hood     steam turbines     single-flow arrangement    

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Identify the contribution of vehicle non-exhaust emissions: a single particle aerosol mass spectrometer

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 5, doi: 10.1007/s11783-023-1662-8

Abstract:

● A single particle observation was conducted in a high traffic flow road environment.

Keywords： Non-exhaust emissions     SPAMS     PMF     Roadside environment    

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Analysis of a 1 kW organic Rankine cycle using a scroll expander for engine coolant and exhaust heat

Yiji LU, Anthony Paul ROSKILLY, Long JIANG, Longfei CHEN, Xiaoli YU

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 527-534 doi: 10.1007/s11708-017-0516-0

Abstract: This paper presented the study of engine coolant and exhaust heat recovery using organic Rankine cycleRather than the conventional engine ORC system mainly focusing on the utilization of exhaust energy,

Keywords： organic Rankine cycle     scroll expander     coolant and exhaust recovery     internal combustion engine    

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Simulation and experiments on a solid sorption combined cooling and power system driven by the exhaust

Peng GAO, Liwei WANG, Ruzhu WANG, Yang YU

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 516-526 doi: 10.1007/s11708-017-0511-5

Abstract: A solid sorption combined cooling and power system driven by exhaust waste heat is proposed, which consistsfeasibility of the system is determined, which proves that this system is especially suitable for the exhaust

Keywords： solid sorption     exhaust waste heat     combined cooling and power system     exergy efficiency    

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Effect of exhaust gas recirculation and ethyl hexyl nitrate additive on biodiesel fuelled diesel engine

K. VENKATESWARLU, B. S. R MURTHY, V. V. SUBBARAO, K. Vijaya KUMAR

Frontiers in Energy 2012, Volume 6, Issue 3,   Pages 304-310 doi: 10.1007/s11708-012-0195-9

Abstract: Exhaust gas recirculation (EGR) proved to be an effective way to reduce the NO emissions.In this present experimental work, a combination of exhaust gas recirculation and cetane improver ethylhexyl nitrate (EHN) is used to investigate the performance and exhaust emissions of a single cylinderin the percentage of EGR which is accompanied by a reduction in brake specific fuel consumption and exhaust

Keywords： additive     exhaust gas recirculation (EGR)     emissions     ethyl hexyl nitrate (EHN)     performance    

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Utilisation of waste heat from exhaust gases of drying process

Olga P. Arsenyeva,Lidija Čuček,Leonid L. Tovazhnyanskyy,Petro O. Kapustenko,Yana A. Savchenko,Sergey K. Kusakov,Oleksandr I. Matsegora

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 1,   Pages 131-138 doi: 10.1007/s11705-016-1560-8

Abstract: Nowadays a lot of low-grade heat is wasted from the industry through the off- and flue-gasses with different compositions. These gases provide the sensitive heat with utilisation potential and latent heat with the components for condensation. In this paper, process integration methodology has been applied to the partly condensed streams. A hot composite curve that represents the gas mixture cooling according to equation of state for real gases was drawn to account the gas-liquid equilibrium. According to the pinch analysis methodology, the pinch point was specified and optimal minimal temperature difference was determined. The location of the point where gas and liquid phases can be split for better recuperation of heat energy within heat exchangers is estimated using the developed methodology. The industrial case study of tobacco drying process off-gasses is analysed for heat recovery. The mathematical model was developed by using MathCad software to minimise the total annualised cost using compact plate heat exchangers for waste heat utilisation. The obtained payback period for the required investments is less than six months. The presented method was validated by comparison with industrial test data.

Keywords： exhaust gas     waste heat     process integration     plate heat exchanger    

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Combustion analysis of a hydrogen-diesel fuel operated DI diesel engine with exhaust gas recirculation

M. LOGANATHAN, A. VELMURUGAN, TOM PAGE, E. JAMES GUNASEKARAN, P. TAMILARASAN

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 568-574 doi: 10.1007/s11708-017-0461-y

Abstract: The intake manifold of the engine was supplied with hydrogen along with recirculated exhaust gas and

Keywords： hydrogen     exhaust gas recirculation (EGR)     diesel     combustion     heat release rate (HRR)     combustion duration    

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Selective catalytic reduction of NOx from exhaust of lean-burn engine over Ag-Al2O3/cordierite catalyst

LI Junhua, KANG Shoufang, FU Lixin, HAO Jiming

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 2,   Pages 143-146 doi: 10.1007/s11783-007-0025-1

Abstract: Only unburned hydrocarbons and carbon monoxide in the exhaust were directly used as reductant (withoutAt exhaust gas temperature range of 350 500?C, the maximum NO conversion reached about 90%.

Keywords： lean-burn gasoline     external reductant     nitrogen adsorption     conversion     catalyst performance    

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Characterizing Thermal Augmentation of Convection-Enhanced Drug Delivery with the Fiberoptic Microneedle Device Article

Lyle Hood,Rudy T. Andriani,Tobias E. Ecker,John L. Robertson,Christopher G. Rylander

Engineering 2015, Volume 1, Issue 3,   Pages 344-350 doi: 10.15302/J-ENG-2015077

Abstract:

Convection-enhanced delivery (CED) is a promising technique leveraging pressure-driven flow to increase penetration of infused drugs into interstitial spaces. We have developed a fiberoptic microneedle device for inducing local sub-lethal hyperthermia to further improve CED drug distribution volumes, and this study seeks to quantitatively characterize this approach in agarose tissue phantoms. Infusions of dye were conducted in 0.6% (w/w) agarose tissue phantoms with isothermal conditions at 15 °C, 20 °C, 25 °C, and 30 °C. Infusion metrics were quantified using a custom shadowgraphy setup and image-processing algorithm. These data were used to build an empirical predictive temporal model of distribution volume as a function of phantom temperature. A second set of proof-of-concept experiments was conducted to evaluate a novel fiberoptic device capable of generating local photothermal heating during fluid infusion. The isothermal infusions showed a positive correlation between temperature and distribution volume, with the volume at 30 °C showing a 7-fold increase at 100 min over the 15 °C isothermal case. Infusions during photothermal heating (1064 nm at 500 mW) showed a similar effect with a 3.5-fold increase at 4 h over the control (0 mW). These results and analyses serve to provide insight into and characterization of heat-mediated enhancement of volumetric dispersal.

Keywords： near-infrared laser     thermochemotherapy     agarose     photothermal heating     micro-catheter     malignant glioma    

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Properties of La1-xCexCoO3 system perovskite-type catalysts for diesel engine exhaust removal

GONG Cairong, FAN Guoliang, HOU Yanfeng, ZHANG Zhongrong, SONG Chonglin, HUANG Qifei

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 6-10 doi: 10.1007/s11705-007-0002-z

Abstract: of the catalysts in removal of NO, total hydrocarbon (THC) and particulate matter (PM) from diesel exhaust

Keywords： catalytic mechanism     combustion     corresponding     LaCeCoO     catalytic activity    

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Association, Quincy, MA, 1995Study on smoke filling combined with sprinkler cooling and natural smoke exhaust

Li Sicheng,Chen Ying,Hu Longhua,Huo Ran and Yang Dong

Strategic Study of CAE 2010, Volume 12, Issue 9,   Pages 90-95

Abstract: model was developed for predicting smoke filling combined with sprinkler cooling and natural smoke exhaustResults showed that smoke filling velocity combined with sprinkler cooling and natural smoke exhaust

Keywords： fire protection engineering     sprinkler spray     sprinkler cooling     natural smoke exhaust     smoke filling    

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Transient emission simulation and optimization of turbocharged diesel engine

Lingge SUI, Zhongchang LIU, Yongqiang HAN, Jing TIAN

Frontiers in Energy 2013, Volume 7, Issue 2,   Pages 237-244 doi: 10.1007/s11708-013-0251-0

Abstract: Aimed at the contradiction of NO and soot emission control with exhaust gas recirculation (EGR) of turbocharged

Keywords： diesel engine     transient simulation     emission     control strategy     exhaust gas recirculation (EGR)    

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Performance and emission characteristics of QHCCI dimethyl ether engine

WANG Ying, LI Wei, ZHOU Longbao, LIU Shenghua, HU Tiegang

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 401-405 doi: 10.1007/s11708-008-0075-5

Abstract: The brake thermal efficiency increases while the exhaust temperature decreases.

Keywords： Experimental investigation     single-cylinder direct-injection     exhaust temperature     dimethyl     compression    

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Impact of oxygen enriched combustion on the performance of a single cylinder diesel engine

K. RAJKUMAR, P. GOVINDARAJAN

Frontiers in Energy 2011, Volume 5, Issue 4,   Pages 398-403 doi: 10.1007/s11708-011-0157-7

Abstract: fuel consumption (SFC), mean effective pressure, brake thermal efficiency, mechanical efficiency, and exhaust

Keywords： oxygen enriched combustion     exhaust gas temperature     brake power (BP)     specific fuel consumption (SFC)    

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Non-thermal plasma for exhaust gases treatment

Elvia ALVA R.,Marquidia PACHECO P.,Fernando GÓMEZ B.,Joel PACHECO P.,Arturo COLÍN C.,Víctor SÁNCHEZ-MENDIETA,Ricardo VALDIVIA B.,Alfredo SANTANA D.,José HUERTAS C.,Hilda FRÍAS P.

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 301-305 doi: 10.1007/s11465-015-0344-z

Abstract:

This article describes a study on a non-thermal plasma device to treat exhaust gases in an internalSeveral tests using a plasma device to treat exhaust gases are conducted on a Honda GX200-196 cm

Keywords： plasma treatment     NOx     CO     CO2     particulate matter     vehicle    

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Title Author Date Type Operation

Exhaust hood for steam turbines-single-flow arrangement

Michal HOZNEDL , Ladislav TAJC , Jaroslav KREJCIK , Lukas BEDNAR , Kamil SEDLAK , Jiri LINHART ,

Journal Article

Identify the contribution of vehicle non-exhaust emissions: a single particle aerosol mass spectrometer

Journal Article

Analysis of a 1 kW organic Rankine cycle using a scroll expander for engine coolant and exhaust heat

Yiji LU, Anthony Paul ROSKILLY, Long JIANG, Longfei CHEN, Xiaoli YU

Journal Article

Simulation and experiments on a solid sorption combined cooling and power system driven by the exhaust

Peng GAO, Liwei WANG, Ruzhu WANG, Yang YU

Journal Article

Effect of exhaust gas recirculation and ethyl hexyl nitrate additive on biodiesel fuelled diesel engine

K. VENKATESWARLU, B. S. R MURTHY, V. V. SUBBARAO, K. Vijaya KUMAR

Journal Article

Utilisation of waste heat from exhaust gases of drying process

Olga P. Arsenyeva,Lidija Čuček,Leonid L. Tovazhnyanskyy,Petro O. Kapustenko,Yana A. Savchenko,Sergey K. Kusakov,Oleksandr I. Matsegora

Journal Article

Combustion analysis of a hydrogen-diesel fuel operated DI diesel engine with exhaust gas recirculation

M. LOGANATHAN, A. VELMURUGAN, TOM PAGE, E. JAMES GUNASEKARAN, P. TAMILARASAN

Journal Article

Selective catalytic reduction of NOx from exhaust of lean-burn engine over Ag-Al2O3/cordierite catalyst

LI Junhua, KANG Shoufang, FU Lixin, HAO Jiming

Journal Article

Characterizing Thermal Augmentation of Convection-Enhanced Drug Delivery with the Fiberoptic Microneedle Device

Lyle Hood,Rudy T. Andriani,Tobias E. Ecker,John L. Robertson,Christopher G. Rylander

Journal Article

Properties of La1-xCexCoO3 system perovskite-type catalysts for diesel engine exhaust removal

GONG Cairong, FAN Guoliang, HOU Yanfeng, ZHANG Zhongrong, SONG Chonglin, HUANG Qifei

Journal Article

Association, Quincy, MA, 1995Study on smoke filling combined with sprinkler cooling and natural smoke exhaust

Li Sicheng,Chen Ying,Hu Longhua,Huo Ran and Yang Dong

Journal Article

Transient emission simulation and optimization of turbocharged diesel engine

Lingge SUI, Zhongchang LIU, Yongqiang HAN, Jing TIAN

Journal Article

Performance and emission characteristics of QHCCI dimethyl ether engine

WANG Ying, LI Wei, ZHOU Longbao, LIU Shenghua, HU Tiegang

Journal Article

Impact of oxygen enriched combustion on the performance of a single cylinder diesel engine

K. RAJKUMAR, P. GOVINDARAJAN

Journal Article

Non-thermal plasma for exhaust gases treatment

Elvia ALVA R.,Marquidia PACHECO P.,Fernando GÓMEZ B.,Joel PACHECO P.,Arturo COLÍN C.,Víctor SÁNCHEZ-MENDIETA,Ricardo VALDIVIA B.,Alfredo SANTANA D.,José HUERTAS C.,Hilda FRÍAS P.

Journal Article