This document summarizes research on downdraft gasification of biomass. It discusses how downdraft gasifiers effectively convert solid biomass into a combustible producer gas. The gasification process involves pyrolysis and reactions between hot char and gases that produce CO, H2, and CH4. Downdraft gasifiers are well-suited for biomass gasification due to their simple design and ability to manage the gasification process with low tar production. The document also reviews previous studies on gasifier configuration upgrades and their impact on performance, and the principles of downdraft gasifier operation.
Simulation of Suction & Compression Process with Delayed Entry Technique Usin...AM Publications
The rapidly increasing worldwide demand for energy and the progressive depletion of fossil fuels has led to an
intensive research for alternative fuels which can be produced on a renewable basis. Hydrogen in the form of energy will almost
certainly be one of the most important energy components of the early next century. Hydrogen is a clean burning and easily
transportable fuel. Most of the pollution problems posed by fossil fuels at present would practically disappear with Hydrogen
since steam is the main product of its combustion. This Paper deals with the modeling of Suction and Compression Processes for
Hydrogen Fuelled S.I.Engine and also describes the safe and backfire free Delayed entry Technique. A four stroke,
Multicylinder, Naturally aspirated, Spark ignition engine, water cooled engine has been used to carrying out of investigations of
Suction Process. The Hydrogen is entered in the cylinder with the help of Delayed Entry Valve. This work discusses the insight
of suction process because during this process only air and Hydrogen enters in to cylinder, which after combustion provides
power. Simulation is the process of designing a model of a real system and conduction experiment with it, for the purpose of
understanding the behavior of the design. The advent of computers and the possibilities of performing numerical experiments
may provide new way of designing S.I.Engine. In fact stronger interaction between Engine Modelers, Designers and
Experimenters may results in improved engine design in the not-to-distant future. A computer Programme is developed for
analysis of suction and Compression processes. The parameter considered in computation includes engine speed, compression
ratio, ignition timing, fuel-air ratio and heat transfer. The results of computational exercise are discussed in the paper.
Operation of Internal Combustion Engines on Digas for Electricity ProductionLPE Learning Center
Proceedings available at: http://www.extension.org/67668
The purpose of this research is to review engine performance and technology issues relating to generating electricity from digester gas in reciprocating internal combustion engines. Research performed at the Colorado State University (CSU) Engines & Energy Conversion Laboratory (EECL) and published material from other organizations is utilized.
Digester gas (digas) can be used effectively in internal combustion engines for electricity production to offset operating costs and/or sell to the electric utility. Stationary industrial engines are generally employed for this purpose. Four application areas where systems have been successfully demonstrated are sewage processing plants, animal waste facilities, landfills, and agricultural waste processing systems. Digas is generated through anaerobic digestion, or biomethanization, for all these cases. There are many common engine technical issues within these areas, although the digas generation systems employed in each case are different. In this presentation issues pertinent to running engines on digas are explored. The focus is on animal waste facilities, but the presentation draws upon the other application areas for technical insight related to engine technology. Specific stationary engine types are discussed. High engine efficiency and power density are important to the economic viability of anaerobic digestion systems. Engine operational and design changes to maintain high efficiency and power density for digas fueling are analyzed. Management of engine maintenance problems is also key to economic viability. Corrosive gases contained in digas, such as hydrogen sulfide (H2S), are evaluated.
Hydrogen as an alternative fuel for commercial airplaneseSAT Journals
Abstract Air traffic today contributes about 3% to the anthropogenic greenhouse effect. This number may change due to increase of air traffic and the decrease of the major CO2 producers of the day. LH2 could be an alternative to the hydrocarbon fuel like cheap kerosene or any other designed hydrocarbon fuel. It could be fuel suitable for aircraft to be produced from renewable energy and offering extremely low emissions (zero CO2, very low NOX). It has the potential to eliminate the dependency of aviation upon dwindling crude oil resources and to reduce dramatically, the contribution of aviation to the anthropogenic greenhouse effect. Use of liquid hydrogen hence could allow sustainable growth of aviation at high rates(typically 4-5% per year) with an extreme low impact on the environment. Keywords: hydrogen, environment, aviation.
Fabrication and Performance Analysis of Downdraft Biomass Gasifier Using Suga...IJSRD
The process by which biomass can be converted to a producer gas by supplying less oxygen than actually required for complete combustion of the fuel is known as gasification. It is a thermo-chemical process and it is performed by a device known as gasifier. For executing the gasification experiments nowadays single throated gasifier uses sugarcane industry waste. In the present study we get to know that sugarcane briquettes are manufactured from residue of sugarcane which is used as a biomass material for the gasification process. Briquettes are formed by extruding the sugar which is extracted from the residue of sugarcane (bagasse) dried in the sun. Equivalence ratio, producer gas composition, calorific value of the producer gas, gas production rate and cold gas efficiency are certain grounds for estimating the performance of the biomass gasifier. The experiential results are compared with those reported in the literature.
The use of Cooking Gas as Refrigerant in a Domestic RefrigeratorIJERA Editor
The application of cooking gas refrigerants in refrigeration system is considered to be a potential way to improve
energy efficiency and to encourage the use of environment-friendly refrigerants. Refrigeration operation has
been met with many challenges as it deals with environmental impact, how it affects humans and how it
contributes to the society in general. Domestic refrigerators annually consume several metric tons of traditional
refrigerants, which contribute to very high Ozone Depletion Potential (ODP) and Global Warming Potential
(GWP). The experiment conducted employs the use of two closely linked refrigerants, R600a (Isobutene) and
cooking gas which is varied in an ideal refrigerant mixture of 150 g of refrigerant and 15 ml of lubricating oil (to
a rating of 40 wt % expected in the compressor). The Laboratory process involved the use of Gas
Chromatography machine to ascertain the values of the mole ratio, molecular weight and critical temperatures.
Prode properties and Refprop softwares were used to ascertain other refrigerant properties of the mixture. The
results indicated that the mixture of R600a with lubricant confirm mineral oil as being the most appropriate for
the operation. The experimental results indicated that the refrigeration system with cooking gas refrigerant
worked normally and was found to attain high freezing capacity and a COP value of 2.159. It is established that
cooking gas is a viable alternative refrigerant to replace R600a in domestic refrigerators. Hence, its application
in refrigerating systems measures up to the current trend on environmental regulations with hydrocarbon
refrigerants
Simulation of Suction & Compression Process with Delayed Entry Technique Usin...AM Publications
The rapidly increasing worldwide demand for energy and the progressive depletion of fossil fuels has led to an
intensive research for alternative fuels which can be produced on a renewable basis. Hydrogen in the form of energy will almost
certainly be one of the most important energy components of the early next century. Hydrogen is a clean burning and easily
transportable fuel. Most of the pollution problems posed by fossil fuels at present would practically disappear with Hydrogen
since steam is the main product of its combustion. This Paper deals with the modeling of Suction and Compression Processes for
Hydrogen Fuelled S.I.Engine and also describes the safe and backfire free Delayed entry Technique. A four stroke,
Multicylinder, Naturally aspirated, Spark ignition engine, water cooled engine has been used to carrying out of investigations of
Suction Process. The Hydrogen is entered in the cylinder with the help of Delayed Entry Valve. This work discusses the insight
of suction process because during this process only air and Hydrogen enters in to cylinder, which after combustion provides
power. Simulation is the process of designing a model of a real system and conduction experiment with it, for the purpose of
understanding the behavior of the design. The advent of computers and the possibilities of performing numerical experiments
may provide new way of designing S.I.Engine. In fact stronger interaction between Engine Modelers, Designers and
Experimenters may results in improved engine design in the not-to-distant future. A computer Programme is developed for
analysis of suction and Compression processes. The parameter considered in computation includes engine speed, compression
ratio, ignition timing, fuel-air ratio and heat transfer. The results of computational exercise are discussed in the paper.
Operation of Internal Combustion Engines on Digas for Electricity ProductionLPE Learning Center
Proceedings available at: http://www.extension.org/67668
The purpose of this research is to review engine performance and technology issues relating to generating electricity from digester gas in reciprocating internal combustion engines. Research performed at the Colorado State University (CSU) Engines & Energy Conversion Laboratory (EECL) and published material from other organizations is utilized.
Digester gas (digas) can be used effectively in internal combustion engines for electricity production to offset operating costs and/or sell to the electric utility. Stationary industrial engines are generally employed for this purpose. Four application areas where systems have been successfully demonstrated are sewage processing plants, animal waste facilities, landfills, and agricultural waste processing systems. Digas is generated through anaerobic digestion, or biomethanization, for all these cases. There are many common engine technical issues within these areas, although the digas generation systems employed in each case are different. In this presentation issues pertinent to running engines on digas are explored. The focus is on animal waste facilities, but the presentation draws upon the other application areas for technical insight related to engine technology. Specific stationary engine types are discussed. High engine efficiency and power density are important to the economic viability of anaerobic digestion systems. Engine operational and design changes to maintain high efficiency and power density for digas fueling are analyzed. Management of engine maintenance problems is also key to economic viability. Corrosive gases contained in digas, such as hydrogen sulfide (H2S), are evaluated.
Hydrogen as an alternative fuel for commercial airplaneseSAT Journals
Abstract Air traffic today contributes about 3% to the anthropogenic greenhouse effect. This number may change due to increase of air traffic and the decrease of the major CO2 producers of the day. LH2 could be an alternative to the hydrocarbon fuel like cheap kerosene or any other designed hydrocarbon fuel. It could be fuel suitable for aircraft to be produced from renewable energy and offering extremely low emissions (zero CO2, very low NOX). It has the potential to eliminate the dependency of aviation upon dwindling crude oil resources and to reduce dramatically, the contribution of aviation to the anthropogenic greenhouse effect. Use of liquid hydrogen hence could allow sustainable growth of aviation at high rates(typically 4-5% per year) with an extreme low impact on the environment. Keywords: hydrogen, environment, aviation.
Fabrication and Performance Analysis of Downdraft Biomass Gasifier Using Suga...IJSRD
The process by which biomass can be converted to a producer gas by supplying less oxygen than actually required for complete combustion of the fuel is known as gasification. It is a thermo-chemical process and it is performed by a device known as gasifier. For executing the gasification experiments nowadays single throated gasifier uses sugarcane industry waste. In the present study we get to know that sugarcane briquettes are manufactured from residue of sugarcane which is used as a biomass material for the gasification process. Briquettes are formed by extruding the sugar which is extracted from the residue of sugarcane (bagasse) dried in the sun. Equivalence ratio, producer gas composition, calorific value of the producer gas, gas production rate and cold gas efficiency are certain grounds for estimating the performance of the biomass gasifier. The experiential results are compared with those reported in the literature.
The use of Cooking Gas as Refrigerant in a Domestic RefrigeratorIJERA Editor
The application of cooking gas refrigerants in refrigeration system is considered to be a potential way to improve
energy efficiency and to encourage the use of environment-friendly refrigerants. Refrigeration operation has
been met with many challenges as it deals with environmental impact, how it affects humans and how it
contributes to the society in general. Domestic refrigerators annually consume several metric tons of traditional
refrigerants, which contribute to very high Ozone Depletion Potential (ODP) and Global Warming Potential
(GWP). The experiment conducted employs the use of two closely linked refrigerants, R600a (Isobutene) and
cooking gas which is varied in an ideal refrigerant mixture of 150 g of refrigerant and 15 ml of lubricating oil (to
a rating of 40 wt % expected in the compressor). The Laboratory process involved the use of Gas
Chromatography machine to ascertain the values of the mole ratio, molecular weight and critical temperatures.
Prode properties and Refprop softwares were used to ascertain other refrigerant properties of the mixture. The
results indicated that the mixture of R600a with lubricant confirm mineral oil as being the most appropriate for
the operation. The experimental results indicated that the refrigeration system with cooking gas refrigerant
worked normally and was found to attain high freezing capacity and a COP value of 2.159. It is established that
cooking gas is a viable alternative refrigerant to replace R600a in domestic refrigerators. Hence, its application
in refrigerating systems measures up to the current trend on environmental regulations with hydrocarbon
refrigerants
A Technical Review Paper on Use of WTO (Waste Transformer Oil)-Diesel Blends ...IJSRD
Pollution from the petroleum oil increases day by day in terms of CO2, CO, NOx, PM and many other gases and particles. Price difference and economy leads people toward the use of alternative fuels. These problems indicate that the initiatives to replace gasoline and diesel fuel, due to the impact of fossil fuel crisis, hike in oil price and stringent emission norms, must be taken. Solution to long term energy problem will come only through research and developments in the field of alternative energy sources. Waste to energy is the recent trend in the selection of alternate fuels. One such fuel is WTO (waste transformer oil), which can be obtained from waste as an alternative fuel. By using WTO as a replacement of Diesel, both the above stated problems can be solved at great extent. From literature review it comes clear Fuels additives have become essential tool not only improve the performance and also produce lower emissions (NOx) of diesel engines. A variety of additives (metal based, oxygenated, antioxidants, lubricity improvers, cetane number improvers, and cold flow improvers) are used in biodiesel fuel to meet the international emission standards. Prime objective of this work is to find out an alternative fuel that can be used as a replacement of diesel and analyses the performance and reduce emission parameters. To fulfill the prime objective, Diesel engine, fuelled with Waste transformer Oil (WTO) - Diesel blends with Additive should be used to be operated at different blend ration with different concentration of Additives.
With augmented vehicle quantities during latest period have effected into immense
claim through vestige energy. These have lead with expansion of vehicle via substitute
energy that comprises gaseous energy, bio energy and vegetables oils as stimulate. Power
through hydrogen becomes the prime prospects which wrap the upcoming stipulate of
remnant energy scarcity. Hydrogen as a key substitute energy becomes a substitution
through usual energy. With notable possessions, alike elevated flare rapidity, elevated
calorific value stimulates usage of hydrogen energy like twin fuel manner in diesel engine.
Present study investigates the overall performance and emissions of diesel engine fuelled
through CNSL and hydrogen as dual fuel. The fuels have been tested under stationary,
one cylinder, water chilled diesel engine. Here the hydrogen is added with B20 (20%
CNSL and 80% diesel) fuel for different flow rate namely 4lpm, 8lpm and 12lpm. Engine
test results showed that exhaust emissions are reduced and performance are improved by
adding hydrogen fuel. The results showed that the addition of 8lpm H2 with B20 decreased
the HC and CO emission compared to B20 and neat diesel fuel. The BTE and NOx
increased for the above dual fuel mode. The NOx and exhaust gas temperature are
increased for 8lpm H2 addition with B20 fuel.
Oil Shale Ex-Situ Process - Leaching Study of Spent Shaleinventionjournals
During the past decade, significant advancement has been made on various extraction technologies to develop U.S. oil shale resources in an environmentally and economically sustainable fashion. This work has been driven by the increasing demand for domestic transportation fuels and the need to improve U.S. energy security. Although conventional hydrocarbon deposits are becoming more difficult to find and limited in volume, unconventional reserves are relatively easy to locate and plentiful. Hence, development of unconventional resources, particularly shale gas, oil sands, and shale oil continues to receive tremendous attention. The present work shows ex-situ process of oil shale in a five ton/day externally heated horizontal rotary reactor, and discuss the process parameters and yield. The main focus of this article is: A) Effect of reactor bed temperature, rotation speed and feed rate on the residence time, fuel consumption and process yield B) Hazardous environmental issue related to leaching of heavy metals and metalloids from spent shale by underground and/or surface water, which prevent further commercialization of this process. In addition, an Aspen diagram of the overall oil shale process is presented as ongoing work focusing on key mechanical issues that affect online reliability and process efficiency including particle size, bed temperature and solid/gas mixing efficiency.
Fundamental Review and Analysis of Gasifier Performance and Gasification ModelAI Publications
A reliable, affordable and clean energy supply is of major importance for society, economy and the environment. The modern use of biomass is considered a very promising clean energy option for reduction of greenhouse gas emission and energy dependency. Biomass gasification has been considered as the enabling technology for modern biomass utilization. However, challenges remains in biomass gasifier design and gasification model for viable commercial application through reliable model prediction and optimization of the process condition to obtain quality product compositions and maximal efficiencies. Bubbling fluidized bed gasifier and Apen Plus gasification model can salvage the undue complex processes and aims to develop the simplest possible model using the process simulator or Aspen Plus that incorporates the key gasification reaction and gasifier design.
PERFORMANCE ANALYSIS OF HYDROGEN FUELED INTERNAL COMBUSTION ENGINEijsrd.com
In the history of internal combustion engine development, hydrogen has been considered at several phases as a substitute of hydrocarbon-based fuels. Starting from the 70’s, there have been several attempts to convert engines for hydrogen operation. Together with the development in gas injector technology it has become possible to control precisely the injection of hydrogen for safe operation. Here we are using stainless steel plate as electrode in the electrolytic cell, the electrolyte being water and NACL salt. The electrolytic cell we used is a 12V battery case made of plastic. The cross sectional layers are cut such that the stainless steel plate fix in the battery case. The plates are separated by very small distance and the plates are given parallel holes for electron flow to be uniform. The power source to the kit is provided by a 12V and 9Ams battery. We used a transparent tube to supply the hydrogen produced in the kit to the air hose tube of our motor cycle. In order to keep the battery charged we used two 6 Amp diode to power the battery while running. There is a separate switch to power the kit and to protect the battery from getting drained. The stainless steel plates are of 50cm length, 25cm height, 2 millimeter thickness. The battery case can hold up to 5 liters of electrolyte. The use of hydrogen with petrol to power the vehicle has resulted in increase in vehicle mileage, accelerating speed with most important task of reduction in exhaust emission.
The Potential Application of Gasification for Biomass Power Generation in Iso...IJERA Editor
Indonesia has renewable energy source very large, as biomass. Installed capacity power plants of Indonesia
now 53,585 MW, where the potential energy biomass is the largest of renewable sources of energy that owned
by Indonesia. The machine of gasification is designed to produce combustible gas (CO, H2, CH4). These
combustible gas are produced to replace fossil fuel as engine fuel to generate electricity. However, the
properties and characteristics of these combustible gas should meet the characteristic of the engine as every
engine has its own specific characteristic. In this research, Biomass Power Generation (BPG) which work more
properly with CO was used. High level of tar contained in produced combustible gas contaminates the engine
filter rapidly. Therefore, the machine cannot be operated at a longer time. The objective of this research was to
study the potential application of downdraft gasification machine with high content of CO and low production
of tar. Downdraft gasification machine which designed in this research had installed capacity as much as 50 kW
with reactor diameter and height were 900 mm and 1000 mm, respectively. The testing result showed that power
generated from this machine was 40 kW, efficiency 80 % and can be operated for 6 hours. The optimum
combustible gas produced by this machine occurred at CO, H2 and CH4 content were 21.75 %, 13.12 % and 1.12
%, respectively. Besides of using active carbon, tar removal was carried out using dust trap system (wet
scrubber). The potential reduction of value of greenhouse gases emission is about 37 until 67 %. Based on an
analysis calculation of financial , a test performance of gasification, and analysis of environmental impact, the
use of system gasification can be used on a system a power plant in the isolated area from national electricity
company in Indonesia.
Experimental Analysis of a Producer Gas Generated by a Chir Pine Needle (Leaf...IJERA Editor
Today’s Indian scenario is facing an unprecedented energy crisis as the conventional energy resources of India are consistently deteriorating with the limited stock of these natural minerals posing a staggering threat to the Indian economy. Among all the available resources biomass proves to be a satisfactory substitute for compensating the energy void due to these natural resources. Biomass is a renewable resource with almost zero net CO2 emission which is processed with the help of biomass gasifier which is concurrently used with a chir pine needle. The performance of the biomass gasifier system is evaluated in terms of equivalence ratio, producer gas composition, calorific value of the producer gas, gas production rate and cold gas efficiency. The experimental results are compared with those reported in the literature.
“Optimal performance and Analysis on 4-S Si and CI Engine Fueled with HHO Gas...iosrjce
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of mechanical and civil engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in mechanical and civil engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Simulation of Combustion Process with Delayed Entry Technique Using Discrete ...AM Publications
The rapidly increasing worldwide demand for energy and the progressive depletion of fossil fuels has led to an
intensive research for alternative fuels which can be produced on a renewable basis. Hydrogen in the form of energy will
almost certainly be one of the most important energy components of the early next century. Hydrogen is a clean burning and
easily transportable fuel. Most of the pollution problems posed by fossil fuels at present would practically disappear with
Hydrogen since steam is the main product of its combustion. This Paper deals with the modeling of Suction and Compression
Processes for Hydrogen Fuelled S.I.Engine and also describes the safe and backfire free Delayed entry Technique. A four
stroke, Multicylinder, Naturally aspirated, Spark ignition engine, water cooled engine has been used to carrying out of
investigations of Suction Process. The Hydrogen is entered in the cylinder with the help of Delayed Entry Valve. This work
discusses the insight of suction process because during this process only air and Hydrogen enters in to cylinder, which after
combustion provides power. Simulation is the process of designing a model of a real system and conduction experiment with it,
for the purpose of understanding the behavior of the design. The advent of computers and the possibilities of performing
numerical experiments may provide new way of designing S.I.Engine. In fact stronger interaction between Engine Modelers,
Designers and Experimenters may results in improved engine design in the not-to-distant future. A computer Programme is
developed for analysis of suction and Compression processes. The parameter considered in computation includes engine speed,
compression ratio, ignition timing, fuel-air ratio and heat transfer. The results of computational exercise are discussed in the
paper.
Thermal Characteristics of Different Shaped Fin Protracted Heat Exchanger in ...YogeshIJTSRD
The current presents looks at exhaust gases potential to recover low grade waste heat energy from internal combustion engines ICEs . A Prolonged Fin Counter Flow Heat Exchange PFCHE double tube was planned, analyzed, and supplied with water as working fluids to achieve this objective. The structure of a double pipe, Protracted Fin Heat Exchanger PFCHE , which performs a simulation study, is derived with exact measurements from one by Rajesh Ravi et al. 2020 research scholar, and then different shapes of the fin profiles were introduced in the designs suggested. The Fluent 17.0 is used for numerical analysis. The CFD results showing that the PFCHE with triangular fin outperforms the PFCHE with circular fin, and previous studies by Rajesh Ravi et al. 2020 showing that the PFCHE with triangular fin outperforms the PFCHE with circular fin. When compared to the PFCHE with circular fin, the PFCHE net heat transfer rate is 1.76 percent higher and 2.82 percent higher than Rajesh Ravi et al. 2020 report. Prof. Ranjeet Arya | Rahul Ade "Thermal Characteristics of Different Shaped Fin Protracted Heat Exchanger in Diesel Engine Exhaust using CFD" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-3 , April 2021, URL: https://www.ijtsrd.com/papers/ijtsrd39939.pdf Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/39939/thermal-characteristics-of-different-shaped-fin-protracted-heat-exchanger-in-diesel-engine-exhaust-using-cfd/prof-ranjeet-arya
A Technical Review Paper on Use of WTO (Waste Transformer Oil)-Diesel Blends ...IJSRD
Pollution from the petroleum oil increases day by day in terms of CO2, CO, NOx, PM and many other gases and particles. Price difference and economy leads people toward the use of alternative fuels. These problems indicate that the initiatives to replace gasoline and diesel fuel, due to the impact of fossil fuel crisis, hike in oil price and stringent emission norms, must be taken. Solution to long term energy problem will come only through research and developments in the field of alternative energy sources. Waste to energy is the recent trend in the selection of alternate fuels. One such fuel is WTO (waste transformer oil), which can be obtained from waste as an alternative fuel. By using WTO as a replacement of Diesel, both the above stated problems can be solved at great extent. From literature review it comes clear Fuels additives have become essential tool not only improve the performance and also produce lower emissions (NOx) of diesel engines. A variety of additives (metal based, oxygenated, antioxidants, lubricity improvers, cetane number improvers, and cold flow improvers) are used in biodiesel fuel to meet the international emission standards. Prime objective of this work is to find out an alternative fuel that can be used as a replacement of diesel and analyses the performance and reduce emission parameters. To fulfill the prime objective, Diesel engine, fuelled with Waste transformer Oil (WTO) - Diesel blends with Additive should be used to be operated at different blend ration with different concentration of Additives.
With augmented vehicle quantities during latest period have effected into immense
claim through vestige energy. These have lead with expansion of vehicle via substitute
energy that comprises gaseous energy, bio energy and vegetables oils as stimulate. Power
through hydrogen becomes the prime prospects which wrap the upcoming stipulate of
remnant energy scarcity. Hydrogen as a key substitute energy becomes a substitution
through usual energy. With notable possessions, alike elevated flare rapidity, elevated
calorific value stimulates usage of hydrogen energy like twin fuel manner in diesel engine.
Present study investigates the overall performance and emissions of diesel engine fuelled
through CNSL and hydrogen as dual fuel. The fuels have been tested under stationary,
one cylinder, water chilled diesel engine. Here the hydrogen is added with B20 (20%
CNSL and 80% diesel) fuel for different flow rate namely 4lpm, 8lpm and 12lpm. Engine
test results showed that exhaust emissions are reduced and performance are improved by
adding hydrogen fuel. The results showed that the addition of 8lpm H2 with B20 decreased
the HC and CO emission compared to B20 and neat diesel fuel. The BTE and NOx
increased for the above dual fuel mode. The NOx and exhaust gas temperature are
increased for 8lpm H2 addition with B20 fuel.
Oil Shale Ex-Situ Process - Leaching Study of Spent Shaleinventionjournals
During the past decade, significant advancement has been made on various extraction technologies to develop U.S. oil shale resources in an environmentally and economically sustainable fashion. This work has been driven by the increasing demand for domestic transportation fuels and the need to improve U.S. energy security. Although conventional hydrocarbon deposits are becoming more difficult to find and limited in volume, unconventional reserves are relatively easy to locate and plentiful. Hence, development of unconventional resources, particularly shale gas, oil sands, and shale oil continues to receive tremendous attention. The present work shows ex-situ process of oil shale in a five ton/day externally heated horizontal rotary reactor, and discuss the process parameters and yield. The main focus of this article is: A) Effect of reactor bed temperature, rotation speed and feed rate on the residence time, fuel consumption and process yield B) Hazardous environmental issue related to leaching of heavy metals and metalloids from spent shale by underground and/or surface water, which prevent further commercialization of this process. In addition, an Aspen diagram of the overall oil shale process is presented as ongoing work focusing on key mechanical issues that affect online reliability and process efficiency including particle size, bed temperature and solid/gas mixing efficiency.
Fundamental Review and Analysis of Gasifier Performance and Gasification ModelAI Publications
A reliable, affordable and clean energy supply is of major importance for society, economy and the environment. The modern use of biomass is considered a very promising clean energy option for reduction of greenhouse gas emission and energy dependency. Biomass gasification has been considered as the enabling technology for modern biomass utilization. However, challenges remains in biomass gasifier design and gasification model for viable commercial application through reliable model prediction and optimization of the process condition to obtain quality product compositions and maximal efficiencies. Bubbling fluidized bed gasifier and Apen Plus gasification model can salvage the undue complex processes and aims to develop the simplest possible model using the process simulator or Aspen Plus that incorporates the key gasification reaction and gasifier design.
PERFORMANCE ANALYSIS OF HYDROGEN FUELED INTERNAL COMBUSTION ENGINEijsrd.com
In the history of internal combustion engine development, hydrogen has been considered at several phases as a substitute of hydrocarbon-based fuels. Starting from the 70’s, there have been several attempts to convert engines for hydrogen operation. Together with the development in gas injector technology it has become possible to control precisely the injection of hydrogen for safe operation. Here we are using stainless steel plate as electrode in the electrolytic cell, the electrolyte being water and NACL salt. The electrolytic cell we used is a 12V battery case made of plastic. The cross sectional layers are cut such that the stainless steel plate fix in the battery case. The plates are separated by very small distance and the plates are given parallel holes for electron flow to be uniform. The power source to the kit is provided by a 12V and 9Ams battery. We used a transparent tube to supply the hydrogen produced in the kit to the air hose tube of our motor cycle. In order to keep the battery charged we used two 6 Amp diode to power the battery while running. There is a separate switch to power the kit and to protect the battery from getting drained. The stainless steel plates are of 50cm length, 25cm height, 2 millimeter thickness. The battery case can hold up to 5 liters of electrolyte. The use of hydrogen with petrol to power the vehicle has resulted in increase in vehicle mileage, accelerating speed with most important task of reduction in exhaust emission.
The Potential Application of Gasification for Biomass Power Generation in Iso...IJERA Editor
Indonesia has renewable energy source very large, as biomass. Installed capacity power plants of Indonesia
now 53,585 MW, where the potential energy biomass is the largest of renewable sources of energy that owned
by Indonesia. The machine of gasification is designed to produce combustible gas (CO, H2, CH4). These
combustible gas are produced to replace fossil fuel as engine fuel to generate electricity. However, the
properties and characteristics of these combustible gas should meet the characteristic of the engine as every
engine has its own specific characteristic. In this research, Biomass Power Generation (BPG) which work more
properly with CO was used. High level of tar contained in produced combustible gas contaminates the engine
filter rapidly. Therefore, the machine cannot be operated at a longer time. The objective of this research was to
study the potential application of downdraft gasification machine with high content of CO and low production
of tar. Downdraft gasification machine which designed in this research had installed capacity as much as 50 kW
with reactor diameter and height were 900 mm and 1000 mm, respectively. The testing result showed that power
generated from this machine was 40 kW, efficiency 80 % and can be operated for 6 hours. The optimum
combustible gas produced by this machine occurred at CO, H2 and CH4 content were 21.75 %, 13.12 % and 1.12
%, respectively. Besides of using active carbon, tar removal was carried out using dust trap system (wet
scrubber). The potential reduction of value of greenhouse gases emission is about 37 until 67 %. Based on an
analysis calculation of financial , a test performance of gasification, and analysis of environmental impact, the
use of system gasification can be used on a system a power plant in the isolated area from national electricity
company in Indonesia.
Experimental Analysis of a Producer Gas Generated by a Chir Pine Needle (Leaf...IJERA Editor
Today’s Indian scenario is facing an unprecedented energy crisis as the conventional energy resources of India are consistently deteriorating with the limited stock of these natural minerals posing a staggering threat to the Indian economy. Among all the available resources biomass proves to be a satisfactory substitute for compensating the energy void due to these natural resources. Biomass is a renewable resource with almost zero net CO2 emission which is processed with the help of biomass gasifier which is concurrently used with a chir pine needle. The performance of the biomass gasifier system is evaluated in terms of equivalence ratio, producer gas composition, calorific value of the producer gas, gas production rate and cold gas efficiency. The experimental results are compared with those reported in the literature.
“Optimal performance and Analysis on 4-S Si and CI Engine Fueled with HHO Gas...iosrjce
IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) is a double blind peer reviewed International Journal that provides rapid publication (within a month) of articles in all areas of mechanical and civil engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in mechanical and civil engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
Simulation of Combustion Process with Delayed Entry Technique Using Discrete ...AM Publications
The rapidly increasing worldwide demand for energy and the progressive depletion of fossil fuels has led to an
intensive research for alternative fuels which can be produced on a renewable basis. Hydrogen in the form of energy will
almost certainly be one of the most important energy components of the early next century. Hydrogen is a clean burning and
easily transportable fuel. Most of the pollution problems posed by fossil fuels at present would practically disappear with
Hydrogen since steam is the main product of its combustion. This Paper deals with the modeling of Suction and Compression
Processes for Hydrogen Fuelled S.I.Engine and also describes the safe and backfire free Delayed entry Technique. A four
stroke, Multicylinder, Naturally aspirated, Spark ignition engine, water cooled engine has been used to carrying out of
investigations of Suction Process. The Hydrogen is entered in the cylinder with the help of Delayed Entry Valve. This work
discusses the insight of suction process because during this process only air and Hydrogen enters in to cylinder, which after
combustion provides power. Simulation is the process of designing a model of a real system and conduction experiment with it,
for the purpose of understanding the behavior of the design. The advent of computers and the possibilities of performing
numerical experiments may provide new way of designing S.I.Engine. In fact stronger interaction between Engine Modelers,
Designers and Experimenters may results in improved engine design in the not-to-distant future. A computer Programme is
developed for analysis of suction and Compression processes. The parameter considered in computation includes engine speed,
compression ratio, ignition timing, fuel-air ratio and heat transfer. The results of computational exercise are discussed in the
paper.
Thermal Characteristics of Different Shaped Fin Protracted Heat Exchanger in ...YogeshIJTSRD
The current presents looks at exhaust gases potential to recover low grade waste heat energy from internal combustion engines ICEs . A Prolonged Fin Counter Flow Heat Exchange PFCHE double tube was planned, analyzed, and supplied with water as working fluids to achieve this objective. The structure of a double pipe, Protracted Fin Heat Exchanger PFCHE , which performs a simulation study, is derived with exact measurements from one by Rajesh Ravi et al. 2020 research scholar, and then different shapes of the fin profiles were introduced in the designs suggested. The Fluent 17.0 is used for numerical analysis. The CFD results showing that the PFCHE with triangular fin outperforms the PFCHE with circular fin, and previous studies by Rajesh Ravi et al. 2020 showing that the PFCHE with triangular fin outperforms the PFCHE with circular fin. When compared to the PFCHE with circular fin, the PFCHE net heat transfer rate is 1.76 percent higher and 2.82 percent higher than Rajesh Ravi et al. 2020 report. Prof. Ranjeet Arya | Rahul Ade "Thermal Characteristics of Different Shaped Fin Protracted Heat Exchanger in Diesel Engine Exhaust using CFD" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-3 , April 2021, URL: https://www.ijtsrd.com/papers/ijtsrd39939.pdf Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/39939/thermal-characteristics-of-different-shaped-fin-protracted-heat-exchanger-in-diesel-engine-exhaust-using-cfd/prof-ranjeet-arya
Fabrication and Performance Analysis of Downdraft Biomass Gasifier Using Suga...IJSRD
The process by which biomass can be converted to a producer gas by supplying less oxygen than actually required for complete combustion of the fuel is known as gasification. It is a thermo-chemical process and it is performed by a device known as gasifier. For executing the gasification experiments nowadays single throated gasifier uses sugarcane industry waste. In the present study we get to know that sugarcane briquettes are manufactured from residue of sugarcane which is used as a biomass material for the gasification process. Briquettes are formed by extruding the sugar which is extracted from the residue of sugarcane (bagasse) dried in the sun. Equivalence ratio, producer gas composition, calorific value of the producer gas, gas production rate and cold gas efficiency are certain grounds for estimating the performance of the biomass gasifier. The experiential results are compared with those reported in the literature.
PERFORMANCE AND EMISSION ANALYSIS OF POROUS MEDIA COMBUSTION CHAMBER IN DIESE...IAEME Publication
Diesel engines, particularly direct injection types, have been an important choice as prime movers in heavy-duty applications such as on-road, off-road, marine and industrial usage due to their high brake thermal efficiency. The fuel economy and exhaust emission regulations, new technologies, development time and cost reduction require increasingly sophisticated solutions to improve the diesel engine performance and reduce exhaust emissions. In this paper we have analyzed the combustion and emission performance of a diesel engine with a porous media for different blends of fuel.
Simulation of Expansion & Exhaust Process with Delayed Entry Technique Using ...AM Publications
The rapidly increasing worldwide demand for energy and the progressive depletion of fossil fuels has led to an
intensive research for alternative fuels which can be produced on a renewable basis. Hydrogen in the form of energy will
almost certainly be one of the most important energy components of the early next century. Hydrogen is a clean burning and
easily transportable fuel. Most of the pollution problems posed by fossil fuels at present would practically disappear with
Hydrogen since steam is the main product of its combustion. This Paper deals with the modeling of Suction and Compression
Processes for Hydrogen Fuelled S.I.Engine and also describes the safe and backfire free Delayed entry Technique. A four
stroke, Multicylinder, Naturally aspirated, Spark ignition engine, water cooled engine has been used to carrying out of
investigations of Suction Process. The Hydrogen is entered in the cylinder with the help of Delayed Entry Valve. This work
discusses the insight of suction process because during this process only air and Hydrogen enters in to cylinder, which after
combustion provides power. Simulation is the process of designing a model of a real system and conduction experiment with it,
for the purpose of understanding the behavior of the design. The advent of computers and the possibilities of performing
numerical experiments may provide new way of designing S.I.Engine. In fact stronger interaction between Engine Modelers,
Designers and Experimenters may results in improved engine design in the not-to-distant future. A computer Programme is
developed for analysis of suction and Compression processes. The parameter considered in computation includes engine speed,
compression ratio, ignition timing, fuel-air ratio and heat transfer. The results of computational exercise are discussed in the
paper.
Thermal Performance of Diffusion Bonded Compact Heat Exchangers using Al2O3 W...ijtsrd
The value of compact heat exchangers CHEs has been recognised in aerospace, automotive, gas turbine power station, and other industries for the last 50 years or more. This is attributed to many reasons, for example manufacturing restrictions, often high efficiency requirements, low cost, and the use of air or gas as one of the fluids in the exchanger. Together with new and improved forms of CHEs, these advances are an excellent opportunity to bring compact heat exchangers into the process industry, particularly where saving energy is an essential target. High energy prices are also encouraging companies to use energy saving strategies at their plants as much as possible. During decades, attempts to increase heat transfer, decrease heat transfer times and eventually improve energy efficiency have been made. Recent advancements in nanotechnology have facilitated the creation of a new type of liquids called nanofluids. Most theoretical and computational experiments have shown that nanofluids demonstrate an improved coefficient of heat transfer relative to their base fluid. This CFD research explores the impact on the performance of straight square compact heat exchangers from Al2O3 water nanofluid flow. The Al2O3 water nanofluids with three weight fractions of nanoparticles i.e. 0.4, 0.8, and 1.2 percent were used. The effect of nanofluid were measured and observed to influence the heat transfer and flow of fluids in a straight square compact heat exchanger. The following conclusions can be drawn based on the provided results, the thermal conductance are approximately 29 higher and the heat transfer are approximately 35 higher in comparison with the conventional fluid i.e. water. Vishal Deshmukh | Prof. Animesh Singhai "Thermal Performance of Diffusion-Bonded Compact Heat Exchangers using Al2O3/Water Nanofluid" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-6 , October 2020, URL: https://www.ijtsrd.com/papers/ijtsrd33508.pdf Paper Url: https://www.ijtsrd.com/engineering/mechanical-engineering/33508/thermal-performance-of-diffusionbonded-compact-heat-exchangers-using-al2o3water-nanofluid/vishal-deshmukh
Generation of Syngas using Anacardium Occidentaleijtsrd
The purpose of this project is to produce syngas from Anacardium occidentale shell which can be used in the piston engine of a short range helicopters like Mosquito XEL etc. which can be used for various applications like for agriculture fertilization and for local transport in an affordable price to the civilians. This anacardium occidentale is also known as cashew nut in most of the region. This project states the production of the syngas through downdraft gasification process as it is proven that it produces very less tar waste compared to other gasifiers. In this project, we will be also reusing the biomass char by converting it into an active catalyst which can be used for various applications like bio diesel production and in pyrolysis process to boost up the chemical reactions. This project also involves the waste management as we are running out of renewable resources of fuel such as fossil fuels which are obtained from the earth. In this project, we will be able to make use of such a fuel in the aviation industry which is obtained from a waste of a phytomass. In this project, we will be focusing on the production of this fuel from anacardium occidentale shells and study its characteristics by distinguishing with other phytomasses. T. Ayyasamy "Generation of Syngas using Anacardium Occidentale" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-5 | Issue-4 , June 2021, URL: https://www.ijtsrd.compapers/ijtsrd42604.pdf Paper URL: https://www.ijtsrd.comengineering/electrical-engineering/42604/generation-of-syngas-using-anacardium-occidentale/t-ayyasamy
The Potential Application of Gasification for Biomass Power Generation in Iso...IJERA Editor
Indonesia has renewable energy source very large, as biomass. Installed capacity power plants of Indonesia
now 53,585 MW, where the potential energy biomass is the largest of renewable sources of energy that owned
by Indonesia. The machine of gasification is designed to produce combustible gas (CO, H2, CH4). These
combustible gas are produced to replace fossil fuel as engine fuel to generate electricity. However, the
properties and characteristics of these combustible gas should meet the characteristic of the engine as every
engine has its own specific characteristic. In this research, Biomass Power Generation (BPG) which work more
properly with CO was used. High level of tar contained in produced combustible gas contaminates the engine
filter rapidly. Therefore, the machine cannot be operated at a longer time. The objective of this research was to
study the potential application of downdraft gasification machine with high content of CO and low production
of tar. Downdraft gasification machine which designed in this research had installed capacity as much as 50 kW
with reactor diameter and height were 900 mm and 1000 mm, respectively. The testing result showed that power
generated from this machine was 40 kW, efficiency 80 % and can be operated for 6 hours. The optimum
combustible gas produced by this machine occurred at CO, H2 and CH4 content were 21.75 %, 13.12 % and 1.12
%, respectively. Besides of using active carbon, tar removal was carried out using dust trap system (wet
scrubber). The potential reduction of value of greenhouse gases emission is about 37 until 67 %. Based on an
analysis calculation of financial , a test performance of gasification, and analysis of environmental impact, the
use of system gasification can be used on a system a power plant in the isolated area from national electricity
company in Indonesia
Co gasification of coal and biomass – thermodynamic and experimental studyeSAT Journals
Abstract Cogasification of coal and biomass is a new area of research. Cogasification offers several advantages than individual feed gasification. A thermodynamic analysis of lignite coal and rice husk cogasification using only steam was studied by using HSC chemistry software in this paper involving the effect of temperature 500-1200°C and GaCR ratio(1-3) on the product gas composition. The study also focused on calculation of thermoneutral conditions and hundred percent carbon conversion temperature in cogasification of lignite coal and rice husk. Experimental study of co gasification of rice husk and coal was also done at fixed steam to carbon ratio. The experimental study was found to be more kinetically controlled.
Keyword: cogasification, rice husk, lignite coal, HSC chemistry software, fixed bed.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
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1. International Journal of Research in Advent Technology, Vol.8, No.6, June 2020
E-ISSN: 2321-9637
Available online at www.ijrat.org
10
doi: 10.32622/ijrat. 86202004
Abstract— Now a days world needs a non-renewable
energy source like fossil fuel, at ugly rates, that has
hyperbolic the significant development in renewable energy
sources. Biomass is one such supply of renewable energy that
is copiously out there in worlds within the sort of industrial
and agricultural products. Gasification is the process of that
convert the biomass into the fuel like combustible gas. These
produced gases can be used in various applications.
Downdraft Gasifier is one of the best suited types of gasifier
for gasification process to produces the combustible gases
from biomass. Because of its simple design and advantages
like flexibility in feed stock, good process management,
minimum tar produced. the concept of gasifier style ought to
be in such some way that it will convert the solid biomass
such as wood chips. Wooden blocks, Soyabean husk etc.
wastes into the shape clean product gases.
Index Terms— Gasification, Downdraft Gasifier,
Biomass Gasification
I. INTRODUCTION
In all over the world biomass is one of the most important
sources of energy. In rural area India renewable energy
scenario indicate that; about 30% of population depends on
conventional form of energy and more than 72% of
population in India depends upon it for its energy required.
Gasification is the process of converting solid biomass into
the gases fuel in different gasifier. The combustible gases are
depending on the types of biomass fuel used in gasifier. The
combustible gases contain the CO2, CH4, CO, H and very
minor quantity of hydrocarbons.
At first, in the initial step called pyrolysis, the natural issue
is disintegrated by heat into vaporous and fluid unpredictable
materials and burn (which is essentially a nonvolatile
material, containing high carbon content). In the subsequent
advance, the hot singe responds with the gases (for the most
part CO2 and H2O), prompting item gases to be specific, CO,
H2 and CH4. The maker gas leaves the reactor with poisons
and in this manner, expects cleaning to fulfill necessities for
motors. Blended in with air, the cleaned maker gas can be
utilized in gas turbines (in enormous scope plants), gas
motors, gas or diesel motor.
Manuscript revised June 29, 2020 and published on July 10, 2020
Pooja Deepak Khadse, Department of Mechanical Engineering, ant Gadge
Baba Amravati University, Amravati, Pote College of engineering and
Technology, Amravati, Maharashtra, India
II. LITERATURE REVIEW
Grandhi et. al. (2018) is to present the comparative study
of various configurations and style a 5.0 kW research
laboratory scale throat less biomass gasifier mistreatment
associate degree analytical technique. The chemical process
potency depends on many parameters like equivalence
quantitative relation, chemical process agent, gasifier
configuration, etc. draft gasifier could be a most fitted
gasifier for biomass chemical process thanks to inherent
blessings like feedstock flexibility, higher method
management, low tar formation, and easy to construct.
Fernandes et. al. (2018) presenting the steps concerned
within the style, construction, and to test the gasifier specific
solid compound cell system. The look decisions square
measure supported reported natural philosophy simulation
results for the whole gasifier gas cleanup-SOFC system. The
created SOFC system is tested and also the measured
parameters square measure compared with those given by a
system simulation. Moreover, an in depth energy analysis is
performed to see the elements liable for poor potency. it's
finished that the SOFC system demonstrates affordable
agreement with the simulated results. Moreover, supported
the energy results, the elements inflicting major irreversible
performance losses square measure known.
Gnanendra P.M et. al. (2016) presents the experimental
study of top downdraft gasifier and examining propagated
rate of gas quality in gasifier. In this study author add the
secondary air in reactor and set the range of air flows, set the
flame in secondary air nozzle. It observed that; if moisture is
high then propagation rate is low. Gas calorific value is
measured base on the secondary to primary air in gasifier.
Susastriawan et. al. (2017) study and scope of downdraft
gasifiers for gasification which is centered around structure
upgrades and their impact on the presentation of the gasifiers.
The outcome shows that structure of gasifiers is a significant
boundary in asification, other than biomass feedstock
attributes and procedure boundaries. The downdraft gasifier
is appropriate for little scope biomass gasification because of
its simple manufacture and activity. The nature of maker gas
(warming worth and tar content) and the gasification
productivity are yield boundaries in the downdraft gasifiers
that are influenced by some significant boundaries. Other
than biomass attributes and procedure boundaries, the
structure of downdraft gasifiers is additionally a significant
boundary in process of gasification.
Pilot Study of Downdraft Gasifier
Pooja Deepak Khadse
2. International Journal of Research in Advent Technology, Vol.8, No.6, June 2020
E-ISSN: 2321-9637
Available online at www.ijrat.org
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doi: 10.32622/ijrat. 86202004
Mehta et. al. (2010) studies the ability and level of biomass
gasification innovation utilized in thermal application in
India and force age to meet the renewable energy
prerequisites. The gasifiers delivered in India run from
10-550 kW capacities with regards to control age. The
Ministry of New and Renewable Energy (MNRE) has
advanced the biomass gasification program through
sponsorships. At present the total introduced limit is 703
MW. The techno monetary possibility of gasification
innovation for warm application has been good when
contrasted and substitution of oil fuel. For the most part, the
introduced frameworks are double fuel based and the fuel
substitution changes from 50-60 % at field level. A lot of
surplus yield buildup is either scorched because of
inaccessibility of room or remains underutilized because of
different reasons. This yield buildup can be used for power
age of gasification at a high productivity.
III. PRINCIPLE OF GASIFIER
Gasifier is relatively simple device and the mechanics of
their operation, such as gas cleanup and feeding, also are
uncertain and the prosperous operation of gasifier, however,
is not so modest. On no account rules exist because the
thermodynamics of gasifier operation are not well
understood. Up till now, nontrivial thermodynamic principles
dictate the air supply, temperature and other operating
variables of the reactors that we build and it is a tribute to the
persistence of experimentalists that so much progress has
been made in the face of so little understanding. However, it
has been the experience in related fields (such as oil, coal
combustion and gas) that once the mechanisms at work are
understood and it is able to develop cleaner, more efficient
processes. Providentially, much of the knowledge acquired in
these fields can be applied to enhance our understanding of
gasification processes [6]-[7].
3.1 CAD Model of Downdraft Gasifier
Figure 1, 2, 3, and 4 shows the CAD model of downdraft
gasifier which is designed in Cero software. It consists of
Hopper, Grate, Ash tray, reactor, Air blower. Hopper is made
up of MS material with 16 gauge sheet. It is used to store the
biomass fuel. The Biomass fuel is feed using the hopper [14]-
[15]. The biomass fuel is held on grate and ash is collected in
the ash tray. For air blower small 12V fan is used to provide
the sufficient quantity of air for combustion.
Figure 1: Front View of Gasifier
Figure 2: Side View of Gasifier
Figure 3: Top View of Gasifier
3. International Journal of Research in Advent Technology, Vol.8, No.6, June 2020
E-ISSN: 2321-9637
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doi: 10.32622/ijrat. 86202004
Figure 4: Isometric View of Gasifier
IV. OPERATION OF DOWNDRAFT GASIFIER
In light of the low tar content downdraft gasifier has been
fruitful for working motors. In the downdraft gasifier air
contacts the pyrolyzing biomass before it contacts the roast
and supports a fire like the fire which is created the warmth
from the consuming volatiles keeps up the pyrolysis and after
this marvel happens with in a gasifier [8] and the restricted air
gracefully in the gasifier is quickly used, so the fire gets more
extravagant as pyrolysis continues and toward the finish of
the pyrolysis zone and the gases comprise for the most part of
about equivalent pieces of CO2, H2O, CO, and H2 and we
call this fire in a constrained air flexibly "flaring pyrolysis‖
and the blazing pyrolysis delivers the majority of the
flammable gases produced during downdraft gasification and
at the same time devours 99% of the tars and it is the key
instrument for gas age in downdraft gasifier [9].
Components of Downdraft Gasifier
• Hopper
• Reduction Chamber
• Ash tray
• Reactor
• Saw Dust Filters
• Grete
• Cotton Filter
Figure 5: Assembly of Downdraft Gasifier
Composition of Producer Gas
• Carbon monoxide (CO)
• Carbon dioxide (CO2)
• Hydrogen (H2)
• Methane (CH4)
V. TECHNICAL DIFFICULTIES
Improvement of more affordable quality tests, emanation
testing with a wide scope of biomass feed stocks. Studies on
creating explicit markets, for example, mining, civil water
supplies, and so on which can indicate biodiesel as the fuel
decision for naturally touchy regions. Co-item use like debris
created in a useful way[10]-[11]. Endeavors are centered
around reacting to fuel framework execution, material
similarity and low fuel dependability under long haul
stockpiling. Proceeded with motor execution, discharges and
sturdiness testing in an assortment of motor sorts and sizes
should be created to build buyer and producer certainty [12] .
Natural advantages offered by biomass over diesel fuel
should be promoted. Studies are expected to lessen cost and
distinguish possible markets so as to adjust cost and
accessibility [13].
Materials Used In Downdraft Gasifier
• Wooden Block (55 mm* 55 mm, Rectangle Shape).
• Soyabean Husk
• Coconut chips
• Cow dung
Advantages of Downdraft over Updraft
• Gas with less tar
• More suitable with some thermal applications
• Fuel specific
4. International Journal of Research in Advent Technology, Vol.8, No.6, June 2020
E-ISSN: 2321-9637
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doi: 10.32622/ijrat. 86202004
• Minimum bulk density of 256 kg/m3
• Ash content of less than 5%.
• Gas comes out of the gasifier at 194-275 Celsius
VI. CONCLUSION
Solid biomass can possibly meet the vitality prerequisite of
India. Downdraft fixed bed gasifier is the most viable
alternative for warmth and force applications. The
development of downdraft gasifier is likewise
straightforward. Downdraft requires shorter opportunity to
touch off. The downdraft gasifier is more secure according to
natural perspective. Applications like creation of methanol,
utilizing of maker gas in energy unit and water system
framework for little scope offers the incredible potential. It is
one of the most appealing options frameworks of vitality. In
the wake of assessing numerous papers, a proposed pilot plan
has been intended to get the necessary downdraft gasifier.
REFERENCES
[1] Grandhi, Suresh & Gupta, AVSSKS & Viswanadham, M. (2018).
Design of lab-scale downdraft gasifier for biomass gasification. IOP
Conference Series: Materials Science and Engineering. 455. 012051.
10.1088/1757-899X/455/1/012051.
[2] Fernandes, Alvaro & Brabandt, Joerg & Posdziech, Oliver &
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AUTHORS PROFILE
Miss. Pooja Deepak Khadse completed her BE in
Mechanical Engineering from Sant Gadge Baba Amravati
University, Amravati. Currently Pursuing her Master of
Engineering in Thermal Engineering at Pote College of
Engineering and Technology, Amravati. Her area of
research is in heat transfer.