The document summarizes bio mass gasification and liquification systems. It introduces gasification and liquification processes. For gasification, it discusses the history, construction, workings, and applications. For liquification, it discusses cryogenic engineering, the history of liquefying gases including the Linde–Hampson system, the construction of the Linde–Hampson liquification system using a compressor and heat exchanger, and how the system operates through polytropic compression and cooling of the compressed gas.
wire mesh type catalytic converter with modification satyam singh
wire mesh type catalytic converter with modification .
it is based on my research work and seminar report.
it works in both diesel as well as petrol engine.
wire mesh type catalytic converter with modification satyam singh
wire mesh type catalytic converter with modification .
it is based on my research work and seminar report.
it works in both diesel as well as petrol engine.
Experimental Investigation of the Effect of Injection of OxyHydrogen Gas on t...IJMERJOURNAL
ABSTRAC: Oxy-Hydrogen gas, H2O2, is a mixture of hydrogen and oxygen produced by water electrolysis. In this work, an experimental exploration was carried out in order to study the effect of the addition of oxy-hydrogen gas into inlet air manifold on speed performance characteristics of a diesel engine at different operating conditions. The experimental work was performed on a test rig comprising a four stroke 5.67 liters water-cooled diesel engine and a Heenan hydraulic dynamometer. Instrumentation included devices for measuring engine speed, load, fuel consumption and inlet air flow rate. The measurements were conducted at 1000, 1500, 2000 and 2500 rpm. At each speed, the engine load was adjusted to 20%, 40% and 80% from the engine full load which corresponds to engine brake mean effective pressures of 1.55, 3.11, and 6.22 bar, respectively, for Oxy-hydrogen generator supplied Currents of 26A and electrolyte concentration of 25 %. The fuel saving percentage and so the brake thermal efficiency for the H2O2 enriched CI engine is more evidently seen at low loads and high-speed conditions. the volumetric efficiency drop was about 5 % at small speeds and reaches to about 2% at higher engine speed.
PREDICTIONS AT THE BLOW END OF THE LD-KGC CONVERTER BY A SEMI-DYNAMIC CONTROL...ijmech
The decision to perform direct turn-down or not, based on an accurate estimate of temperature at the blow end, prevents two types of problems: (a) the loss of productivity due to the wait time in the steelmaking; and (b) tapping of off-specification heat.
In the present work, a technique and model for temperature prediction at the blow end are briefly discussed, along with their limitations and perspectives for application. As a result of this analysis, a mathematical model based in heat and mass balances has been developed with a view to evaluating the possibility of improving this prediction capability. The formulation of said model and its preliminary adjustment to industrial data are presented and discussed, and the main limitations and difficulties in the application of the methodology are highlighted.
The study here presented focuses the development of a semi-dynamic control model in the LD-KGC converter (Linz-Donawitz-Kawasaki Gas Control Converter). The control model enables one to predict the temperature of the blow end by solving both the energy and mass equations. The computational language adopted is Fortran 90; the equations are solved iteratively until a solution for temperature is found. The inputs to the control model are the load data of the LD-KGC converter at the blow beginning and the collected data by the lance to 89% of oxygen blow. The results obtained in the present work were compared to the data measured in steel making. The semi-dynamic control model results agree well with data for LDKGC converters. However, the model is sensitive to the premises here adopted, like those pertaining to the exit gas composition (CO and CO2).
Presentation: DOE Stetsoon Hydrogen Storage technologieschrisrobschu
Hydrogen Storage Technologies –
A Tutorial
with Perspectives from the US National Program
Ned T. Stetson
U. S. Department of Energy
1000 Independence Ave., SW
Washington, DC 20585
Materials Challenges in Alternative and Renewable Energy
Cocoa Beach, FL
February 22, 2010
• Why do we need better hydrogen storage?
• Physical storage technologies
– Liquid
– Compressed
– Cryo-compressed
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– Hydrogen sorbents
– Metal hydrides
– Complex hydrides
– Chemical hydrogen storage
Doe stetson hydrogen_storage_technologies_tutorial
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The hydrogen economy has been under rapid growth and development in recent years. Metal hydride based hydrogen storage systems deserve attention as they offer higher storage densities compared to high-pressure gas storage. It is the most compatible and economic method to store hydrogen. In these metal hydride storage devices, low heat transfer has been a key issue. The heat transfer rate can be enhanced by using various techniques.
A two-dimensional numerical analysis of coupled heat and mass transfer processes in a cylindrical metal hydride reactor containing MmNi4·6Al0·4 is presented. Performance studies on MmNi4·6Al0·4 based hydrogen storage device are carried out by varying the hydrogen supply pressure, absorption (cooling fluid) temperature and hydride bed thickness.
An exclusive, in-depth look at the latest natural refrigerants-based technology trends in different applications around the globe with Prof. Dr.-Ing. Armin Hafner, NTNU (Norwegian University of Science and Technology).
Experimental Investigation of the Effect of Injection of OxyHydrogen Gas on t...IJMERJOURNAL
ABSTRAC: Oxy-Hydrogen gas, H2O2, is a mixture of hydrogen and oxygen produced by water electrolysis. In this work, an experimental exploration was carried out in order to study the effect of the addition of oxy-hydrogen gas into inlet air manifold on speed performance characteristics of a diesel engine at different operating conditions. The experimental work was performed on a test rig comprising a four stroke 5.67 liters water-cooled diesel engine and a Heenan hydraulic dynamometer. Instrumentation included devices for measuring engine speed, load, fuel consumption and inlet air flow rate. The measurements were conducted at 1000, 1500, 2000 and 2500 rpm. At each speed, the engine load was adjusted to 20%, 40% and 80% from the engine full load which corresponds to engine brake mean effective pressures of 1.55, 3.11, and 6.22 bar, respectively, for Oxy-hydrogen generator supplied Currents of 26A and electrolyte concentration of 25 %. The fuel saving percentage and so the brake thermal efficiency for the H2O2 enriched CI engine is more evidently seen at low loads and high-speed conditions. the volumetric efficiency drop was about 5 % at small speeds and reaches to about 2% at higher engine speed.
PREDICTIONS AT THE BLOW END OF THE LD-KGC CONVERTER BY A SEMI-DYNAMIC CONTROL...ijmech
The decision to perform direct turn-down or not, based on an accurate estimate of temperature at the blow end, prevents two types of problems: (a) the loss of productivity due to the wait time in the steelmaking; and (b) tapping of off-specification heat.
In the present work, a technique and model for temperature prediction at the blow end are briefly discussed, along with their limitations and perspectives for application. As a result of this analysis, a mathematical model based in heat and mass balances has been developed with a view to evaluating the possibility of improving this prediction capability. The formulation of said model and its preliminary adjustment to industrial data are presented and discussed, and the main limitations and difficulties in the application of the methodology are highlighted.
The study here presented focuses the development of a semi-dynamic control model in the LD-KGC converter (Linz-Donawitz-Kawasaki Gas Control Converter). The control model enables one to predict the temperature of the blow end by solving both the energy and mass equations. The computational language adopted is Fortran 90; the equations are solved iteratively until a solution for temperature is found. The inputs to the control model are the load data of the LD-KGC converter at the blow beginning and the collected data by the lance to 89% of oxygen blow. The results obtained in the present work were compared to the data measured in steel making. The semi-dynamic control model results agree well with data for LDKGC converters. However, the model is sensitive to the premises here adopted, like those pertaining to the exit gas composition (CO and CO2).
Presentation: DOE Stetsoon Hydrogen Storage technologieschrisrobschu
Hydrogen Storage Technologies –
A Tutorial
with Perspectives from the US National Program
Ned T. Stetson
U. S. Department of Energy
1000 Independence Ave., SW
Washington, DC 20585
Materials Challenges in Alternative and Renewable Energy
Cocoa Beach, FL
February 22, 2010
• Why do we need better hydrogen storage?
• Physical storage technologies
– Liquid
– Compressed
– Cryo-compressed
• Materials-based storage technologies
– Hydrogen sorbents
– Metal hydrides
– Complex hydrides
– Chemical hydrogen storage
Doe stetson hydrogen_storage_technologies_tutorial
Seminar Report on Heat transfer in metallic hydrideMOHAMED ALI JAHAR
The hydrogen economy has been under rapid growth and development in recent years. Metal hydride based hydrogen storage systems deserve attention as they offer higher storage densities compared to high-pressure gas storage. It is the most compatible and economic method to store hydrogen. In these metal hydride storage devices, low heat transfer has been a key issue. The heat transfer rate can be enhanced by using various techniques.
A two-dimensional numerical analysis of coupled heat and mass transfer processes in a cylindrical metal hydride reactor containing MmNi4·6Al0·4 is presented. Performance studies on MmNi4·6Al0·4 based hydrogen storage device are carried out by varying the hydrogen supply pressure, absorption (cooling fluid) temperature and hydride bed thickness.
An exclusive, in-depth look at the latest natural refrigerants-based technology trends in different applications around the globe with Prof. Dr.-Ing. Armin Hafner, NTNU (Norwegian University of Science and Technology).
International Journal of Engineering and Science Invention (IJESI)inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
Adsorption Materials and Processes for Carbon Capture from Gas-Fired Power Plants – AMPGas - presentation by Enzo Mangano in the Natural Gas CCS session at the UKCCSRC Cardiff Biannual Meeting, 10-11 September 2014
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Micro RNA genes and their likely influence in rice (Oryza sativa L.) dynamic ...Open Access Research Paper
Micro RNAs (miRNAs) are small non-coding RNAs molecules having approximately 18-25 nucleotides, they are present in both plants and animals genomes. MiRNAs have diverse spatial expression patterns and regulate various developmental metabolisms, stress responses and other physiological processes. The dynamic gene expression playing major roles in phenotypic differences in organisms are believed to be controlled by miRNAs. Mutations in regions of regulatory factors, such as miRNA genes or transcription factors (TF) necessitated by dynamic environmental factors or pathogen infections, have tremendous effects on structure and expression of genes. The resultant novel gene products presents potential explanations for constant evolving desirable traits that have long been bred using conventional means, biotechnology or genetic engineering. Rice grain quality, yield, disease tolerance, climate-resilience and palatability properties are not exceptional to miRN Asmutations effects. There are new insights courtesy of high-throughput sequencing and improved proteomic techniques that organisms’ complexity and adaptations are highly contributed by miRNAs containing regulatory networks. This article aims to expound on how rice miRNAs could be driving evolution of traits and highlight the latest miRNA research progress. Moreover, the review accentuates miRNAs grey areas to be addressed and gives recommendations for further studies.
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3. Title : Bio mass gasification and
liquification systems
Subject : RENEWABLE ENERGY SOURCES
Section : C
Department: Mechanical Engineering
Submitted by
STAFF SIGNATURE DineshPiran G
12. INTRODUCTION to liquification
Cryogenic engineering is basically the production of
low temperature, utilization of low temperature etc.,
The cryogen like liquid oxygen and liquid hydrogen
are used in rocket propulsion. In the recent past liquid
hydrogen is being considered foe automobile.
Hydrogen gas becomes liquid at 20K.
13. HISTORY
Historically, the Linde – Hampson system was
the second used to liquefy gases (the
cascade system was the first), although it is
the simplest of all the liquefaction systems.
The first cryogenic liquefaction was
performed based on the cascade
refrigeration cycles.
14. CONSTRUCTION
• This construction is
defined as the Linde –
Hampson’s
liquification system.
• This diagram the
compressor & heat
exchanger is very
must.
15. OPERATION
In case of the Polytropic compression, the gas is cooled to
ambient temperature either in the same compressor or by inter-
stage coolers and after-coolers. The compressed gas is then
cooled in the main heat exchanger by the outgoing saturated
vapour steam from the separator and then throttled to
atmospheric pressure. A fraction of the gas is liquefied and the
liquid is then separated from the saturated vapour in the
separator. The return gas at atmospheric pressure and near-
ambient temperature is recycled with the make-up gas.
