Hydrogen Peroxide As Additive For Diesel Fuel

Hydrogen Peroxide As Additive For Diesel Fuel CHAPTER 1 INTRODUCTION HEAT ENGINES A heat engine is a machine whose function is to produce mechanical energy and it does so by using heat energy that is released when combustion of fuel takes place. It is classified in two main types on the basis where the combustion takes place. 1. External combustion engines also called the E.C engines: Here, as name suggests, heat energy from fuel is extracted not inside the cylinder where mechanical movement is generated but outside at different setup from where it is carried along in any medium such as air, steam or gas and passed into setup where it can be used for generating mechanical movement. Examples of this type of engine are hot air engines, steam turbines, steam engines and closed cycle gas turbine. This kind of engine is mostly used in electric power generations, ships, and driving locomotives. 2. Internal combustion engines famously known as I.C engines: It can be easily understood from the name that heat energy of fuel is extracted inside the cylinder from where mechanical movement originates. I.C. ENGINES: Here the mechanical energy is generated by force on nozzle, blades of turbines or pistons. They are arranged in such a way that when fuel is burnt inside combustion chamber the gases so produced as result of this action having very high pressure and very high temperature creates a force that directly leads to the their movement. From the development point of view we can say that J.J.E Lenior was the one who developed the first practically okay engine in 1860 and after that many different version were experimented mostly having power of around 4.5 kw and efficiency near 5%. otto-langen is given credit for developing a four stroke cycle engine in 1876. The efficiency of engine was nearly around 11%. It worked on spark ignition system. In 1892 rudolf diesel came with the compression ignition engine which was more efficient than spark ignition engines. 1.2.1 Classification of I.C. Engines. CHAPTER 2 DIESEL ENGINE 2.1 INTRODUCTION It is an internal combustion heat engine where heat energy, produced by spraying fuel on compressed air having a high temperature that is above the self-ignition temperature of fuel inside the cylinder, is converted in to mechanical work. Piston is arranged inside the cylinder that produces this mechanical work in response to combustion and expansion of air inside the cylinder. Diesel engine works on both 2 stroke and 4 stroke cycle. The main difference between diesel and petrol engine is that diesel works on the concept of constant pressure heat addition while petrol works on the concept of constant volume heat addition. For an engine to work on constant pressure heat addition concept it needs fuel which has low self-ignition temperature. And the fact that only air is compressed inside the cylinder is the reason for high compression ratio of diesel engine. They lie in the range of 14-22. 2.2 WORKING The four important processes of a diesel engine are intake of air, compression of the air to temperature that is above the self-ignition temperature of fuel, combustion inside the cylinder by spraying fuel on the compressed air and finally letting out the gases from cylinder after combustion. These four processes are repeated in cycle to make the engine run continuously. These four processes can be done with two strokes of piston (one revolution of crankshaft) or four strokes of the piston (two revolution of crankshaft). Lets understand the four stroke processes briefly because we are going to perform experiment on 4-stroke engine. During first stroke piston moves down creating space for air to come in. now when piston moves upward it compress air within the cylinder. When piston reaches at the top fuel is sprayed in the cylinder. This leads to combustion and downward movement of piston. After reaching bottom piston moves upward removing the exhaust gas from cylinder. And again when piston moves down fresh air is taken in cylinder and processes goes on. The up and down movement (linear motion) of piston is converted in to rotary motion through crankshaft which is connected to the piston. Please refer to the diagram below. 2.3 FUEL INJECTION The injection of fuel to the cylinder is very critical processes. If done with accurate timing and injection pressure it can lead to enhanced performance of the engine. The injection pressure given to the fuel by injector is typically 7â‚ ¬Ã‚ ª106 to 7â‚ ¬Ã‚ ª107 pa. The accurate time for fuel injection is when piston is about to reach the top of cylinder. When fuel is injected inside it is partly combusted as constant volume and then as piston moves down the remaining part is combusted as pressure constant processes. 2.4 PROS AND CONS OF DIESEL ENGINE The diesel engine is far more superior to the gasoline engine in terms of efficiency. They do not make noise and are very low on maintenance requirement when compared to gasoline engines. Its reliability and ruggedness is more. As fuel leads to combustion due to low self-ignition temperature no spark plugs are required which leads to lower cost of maintaining. Cost of fuel is lower, around 30% to 40% than gas engines. Another major advantage it gives over gasoline engine is by producing low waste in exhaust and cooling Major disadvantages of diesel engine are its high weight to horsepower ratio and difficulty to make them start when they are in cold weather area. CHAPTER 3 DIESEL FUEL AND ADDITIVES Any liquid that can be utilized to operate diesel engine is called as diesel fuel. Mainly derived from following four sources. Diesel fuel has been divided into three major groups by ASTM (The American society for testing and materials), which depends on the various uses of diesel engines. They are: No. 1-D for frequent load and speed changing engines. No. 2-D for engine with constant speed but high loads. No. 3-D for low and medium speed engines that operate under sustained loads. 3.1 DESIRED QUALITIES OF DIESEL FUEL Keeping in mind the functioning of diesel engine that are few important and critical qualities that a liquid must have to serve as diesel fuel. They are: 3.2 STANDARD SPECIFICATION OF DIESEL FUEL Depending upon intention of use, diesel fuel is available in various grades. Diesel fuel is a mixture of different crude oil derived substances, all with their own physical and chemical properties, such as paraffins, isoparaffins, napthenes, olefins and aromatic hydrocarbons. Diesel fuel has to work in various kinds of engine types, having difference in conditions of operation and cycles of duty, and range of technology of fuel system, temperatures of engine and pressures of fuel system. It must suit a wide range of different climates. The balanced properties of each grade of diesel fuel are important to give good performance over an extremely various situation .The most common in use guidelines for diesel fuel are given by ASTM International. ASTM specifications are created after taking into consideration, based on the wide range of experience and cooperativeness of diesel fuels producer, diesel engines manufacturer and fuel systems (and users of both), and other important officials like state fuel quality regulators. 3.3 IMPORTANT PROPERTIES OF FUEL 3.4 DIFFERENT TYPES AND FUNCTIONS OF ADDITIVES Diesel fuel properties are met and maintained by petroleum industry by taking the use of number of commercial diesel fuel additives. Fuel components and additives are different from each other. Firstly Fuel Components are hydrocarbon classes like aromatic, iso-paraffin and naphthene. They basically sum up the volume of the fuel. While Additives are added to fuel in at very less amounts, generally at the ppm level, and is of no significance fuel volume. There are different types of additives that are used to improve fuel in different ways and to overcome different problems. Following table give different types of additives and their functions. Table showing different types and function of additives. Type of Additive Function Cetane number improver Improves ignition quality by raising cetane number, better starts, reduces white smoke Lubricity improvers Improves lubricity, better injector pump lubrication Antioxidants Extend storage life, inhibit oxidation, reduce gum and precipitate formation Stabilizers Inhibit oxidation extend storage life Metal deactivators Deactivate copper compounds in fuel, thereby promoting longer storage life Pour point depressants Low temperature operability, improve cold flow properties Smoke suppressants Promote more complete combustion reduce exhaust smoke Rust preventers Reduce formation of rust in fuel systems storage tanks De-emulsifiers Used to increase the rate of water separation from the fuel CHAPTER 4 HYDROGEN PEROXIDE Having very high oxidizing capability Hydrogen peroxide (h2o2) is one of the strongest reactive oxidizer that exists. Naturally, it is synthesized as the by-product of oxidative metabolism in nearly all-living organisms. It is mainly used as a propellant in rocketry, as bleach, as an antiseptic and as an oxidizer. It has IUPAC name of Di-hydrogen dioxide and is also known as Dioxidane. Molecular diagram of hydrogen peroxide 4.1 IMPORTANT PROPERTIES OF H2O2: 1. Hydrogen peroxide has a Molar mass of 34.0147 g/mol 2. It appears colorless in solution and otherwise has a very light blue color. 3. H2O2 has density of 1.463 g/cm3 4. Melting point of -.43 oc. and boiling point of 150.2 oc. 5. It has more viscosity than h2o. 6.It has calorific value of 2700 kJ/kg. 7. Has dipole moment of 2.13 debye and refractive index of 1.33 (same as that of water) 8. It has specific heat capacity of 1.267 J/kg (gas) and of 2.619 J/kg (liquid) 4.2 HYDROGEN PEROXIDE AS AN ADDITIVE: One important reaction of hydrogen peroxide is its spontaneous exothermic decomposition into oxygen and water. The reactions is: 2 H2O2  ® 2 H2O + O2 It has: 1. Standard enthalpy of reaction of -98.4 kJ/mol 2. Gibbs free energy of -118.7 kJ/mol 3. Change of entropy of 71 J/mol Because of this property of hydrogen peroxide it is used as propellant in rocket. Here high-test peroxide (hydrogen peroxide with concentration of around 90%) is used. The H2O2 decomposes into steam and oxygen. According to me same concept can be applied to diesel engine as well. Where adding small amount of hydrogen peroxide to the diesel fuel can improve ignition of diesel fuel inside combustion chamber by providing additional oxygen and energy when it decomposes. And steam thus produced will easily move out along the exhaust gases. CHAPTER 5 EXPERIMENT PERFORMED 5.1 OBJECTIVE: To conduct experiment using 4 stroke, 2 cylinder diesel engine to study the effects of addition of hydrogen peroxide to the diesel fuel. And compare the performance of three different sample fuel where the first one is 100% diesel, second is 95% diesel + 5% hydrogen peroxide and third is 90% diesel + 10% hydrogen peroxide. 5.2 AIM: To calculate following parameters for three fuel samples: Brake power (BP). Brake mean effective pressure (Pbm) Fuel consumed (Qf) Heat energy produced by fuel (Hf) Brake specific fuel consumption (BSFC) Brake thermal efficiency ( Ã‚ ¨bt) Air fuel ratio (A/F) 5.3 EXPERIMENTAL SETUP: Diesel engine has two cylinders and is four stroke, water-cooled engine. Dynamometer that is a rope brake type has been provided with loading sensors. Different rota-meters has been arranged to calculate flow of water to calorimeter of exhaust gas and to the engine jacket. Setup is equipped with temperature sensors, air tank and fuel tank for supply. Software has been programmed to collect data. It provides experiment performer to log-in data and store and print them. This software allows tabulation and comparison of data collected. Now lets discuss about the dynamometer mentioned above. It has brake drum, load cell, and arrangement of cooling down water. It is so coupled with the shat of the engine that load can be changed using rotation of wheel that increases the tension of the drum. Another important part of the setup is facility provided to measure the heat energy gone along with exhaust gases. Calorific measuring meter is equipped with jacket of the cooling water and shell that is in central with baffles. Water is made to flow against in indirect contact with gas that comes from exhaust and there is a rota-meter and valve to control the rate of flow of this water. So using heat can be measured that is going out as a waste with gases that comes from exhaust. There also is a provision made for getting p-v and p- Ã¢â‚¬Ëœ graphs. These works based on the sensors. Sensors that are stored in combustion chamber and aligned along the shaft that gives the output motion that has been produced by engine. These sensors provide the software the data of different pressure and angle of crank. And then we directly get graphs on the computer. But sadly these sensors have been damaged and cannot be used. So we are not able to get these graphs which are essential part of performance analysis. 5.4 EXPERIMENTAL PROCEDURE: First of all three different samples of fuels are made. Sample 1 is pure diesel. Sample 2 is 5% hydrogen peroxide and 95% diesel. Sample 3 is 10% hydrogen peroxide and 90% diesel. All the pre-checks of the engine are conducted such as SAE 20w40 oil is filled in the oil sump up to needed level using a stick that is made specially for this purpose, data cable is connecting unit of interfering with the computer, flow of water is set accordingly through rota-meters. Filling of the fuel sample in the fuel tank. Starting engine with the help of lever that is for decompressing. Lifting this lever while turning flywheel at high speed taking use of handle leads to smooth starting of engine. Run the engine for like say 2 min before any thing to be done because it needs time to stabilization. Now loading of the diesel engine is done with help of dynamometer. Here we will try and set four different loads for a sample of fuel. Firstly zero kg then eight kg after that 16 kg and finally 24 kg. Readings are noted down or you may say logged in the computer for every load and saved. After completion of the experiment for fuel 1 same procedure is followed for other two samples. After the readings and information of all samples are collected stop the engine only after reducing load on engine. Finally close the supply of water that is used for cooling and stop the fuel supply. 5.5 IMPORTANT SPECIFICATIONS OF ENGINE: 14 horse power engine Diameter of bore is 87.5 mm Length of stroke is 110 mm Length of arm acting on dynamometer is 0.165m Density of air is taken as 1.21 kg/m3 Gravitational acceleration is 9.81 m/s2 Surface area of piston is 6.01*10-3 m2 Volume swept by cylinder per second is .0165 m3/sec 5.6 FORMULAE USED: Please note formulae have been written after calculating all constant and known values as specific numerical constant so as to get clear picture of what and how different variables affect the values of performance indicators. And also that following set of formula apply for sample 1 only and similarly formulae for sample 2 and 3 were calculated separately. Brake-power (in kw): m is mass of load acting on dynamometer (kg) N is revolution per minute of shaft Break mean effective pressure (in N/m2): Fuel consumed by engine (in kg/s): X is volume of fuel consumed (in ml) T is time taken to consume X ml of fuel (in seconds) Air fuel ratio: Qa is flow rate of air intake by engine (in m3/s) Brake specific fuel consumption (in kg/kw-s): Heat supplied by fuel (in kw): Brake thermal efficiency (in %): Volumetric efficiency (in %): 5.8 ANALYSIS AND COMPARISION OF PERFORMANCE: GRAPH: LOAD VS BRAKE POWER From above graph we can say that all the 3 samples of fuel are able to give same brake power output. This helps us to confirm that 2 experimental fuel are able to provide same output as that provided by original fuel. GRAPH: LOAD VS BSFC From the graph we can observe that sample 2 has higher BSFC then other 2 samples at low loads. But as the load is increased sample 2 has slightly lower BSFC than other two samples. While sample 3 gives you lower BSFC at low loads and same BSFC as the sample 1 at higher loads. GRAPH: LOAD VS BRAKE THERMAL EFFICIENCY From graph above, it is clearly visible that sample 2 and sample 3 provides higher efficiency than the original sample 1. And it is also important to note that there is not much vast difference between efficiency of sample 1 and sample 2 CHAPTER 6 CONCLUSION The experiment was performed on the 4-stroke, vertical, 2-cylinder diesel engine. It was maintained at constant rpm of 1498 and 50 ml of fuel was consumed at each load. Four load conditions were decided to perform experiment on 3 samples of fuel keeping in mind the capability of engine. The 4 conditions were 0, 8, 16, and 24 kg. The positives that we can take from the experiment performed are that we are able to produce same output result in terms of output power at output shaft though the heating value of sample fuel 2 and 3 are lower than that of sample 1. This is the reason we are able to show increase in brake thermal efficiency obtained by sample fuel 2 and 3 than that obtained by sample 1. But the most important conclusion that I think from the experiment is that there is slight decrease in BSFC of sample fuel 2 at high load. Due to limitation of experimental conditions we cannot check the result for load above 25 kg. I believe that this result has originated from the fact that hydrogen peroxide provides that additional oxygen and energy when it decomposes exothermically to give steam and oxygen. The thing that hampers the proposition of hydrogen peroxide as an additive for diesel fuel is its storage problem. A research is needed on the feasibility of storing hydrogen peroxide separately than the diesel in engine and spraying it through different injection system than that of diesel because there could be possibility when hydrogen peroxide in the fuel tank it may decompose itself without aid of compression temperature in combustion chamber in long-term storage. The cost factor also needed to be taken into account. The other few things that are kind of inconclusive and needs further research on them are how does steam produced by decomposition reaction affects the engine on long run and what amount of hydrogen peroxide is optimum for the engine.

War on Terrorism is too Soft to Insure Victory :: essays research papers

America seems to have learned nothing from Vietnam. A few troops here and there, appeasement of protesters and an overall mediocre effort by the "forces of freedom" led to the debacle known as the Vietnam War. Our war veterans, who are truly heroes, fought for freedom, while a lack of impetus and an overflow of politics and propaganda in Washington fought the same war on the wrong side. Once again, America seems to have found a way to make a mess of foreign policy, and similarly, a way to disregard the ideals of freedom, truth and morality that provide the basis for the United States of America. My generation's Vietnam is called "The War on Terrorism." I have not heard such a blatant misnomer since California called its command-market power schemes "deregulation." It seems to me, only mere months after the climax of Sept. 11, that the United States had no real intention of waging war on terrorism. This fact is no bother to President Bush, who, as long as he keeps up appearances, garners better approval ratings than even Clinton (when he was impeached, no less). The fact that everyone loves to ignore is, quite simply, that governments that harbor, aid, abet or even condone terrorism must be eliminated swiftly and unequivocally. When gone, the Taliban and its sister regimes must be replaced with governments that allow the freedoms we take for granted in the West. Make no mistake; this is as close to imperialism as it gets. Anti-Western, liberal hatemongers who protest war and clamor for a peace that amounts to murder will absolutely hate this idea a fact I find ironic given the relative condition of the Western world. Putting it simply, the Islamic fundamentalist countries that harbor and condone terrorists are putrid hellholes by comparison to the United States. Those who call for peace only seek to deny the blessings of freedom, self-interest and individuality to those who now suffer under these bloodthirsty regimes. There is no question that those who call for peace when the United States' very moral fabric has been attacked are lacking proper priorities. There must be a moral code in the life of every human being, which takes absolute precedence over every action. Without a moral code, human life is aimless and wasted. Those who would trade morality for a shaky peace must question their rationale. Unfortunately, the worst of the anti-war protesters are those who claim to be for a compassionate sort of war.

Professional Career

Professional Career Action Plan As the health care industry grows, the request for higher education is also at a demand. With health care evolving and technology expanding, professional within the health care category must utilize career building and planning resources. As a student of higher education, one must analyze his or her professional aspect within the health care system. This essay will discuss my views on my professional goal, the health care Job I plan to have, the skills I currently have and the skills that I will need to alter.Thus the essay will further discuss my plan to achieve my professional goal, he resources available with organizations that will help further professional goal, and the benefits of acquiring a professional career action plan. Professional Goal As I went through my Journey at University of Phoenix, my professional goals have changed many times. With so many knowledgeable facilitators in the fields and receiving feedback on the fields have helped co nstruct a definite decision on what my professional goals will be.There are so many opportunities in assisting the community and health care organizations from small clinics to larger health organizations. I would like to be an advocate for the Hmong community. I believe that within the Hmong community there is much needed guidance for the children of this generation and many generations to come. This goal does not necessarily remain with the health care industry however; I believe that it is the foundation of all generations to have a successful ongoing community for the Hmong population.This professional goal is to Join a nonprofit anti- bullying association and volunteer my free time to gain knowledge on educating the society on how prevalent bully is and the effects. From there I wish to gain access to reach out to the Hmong Women's ssociation. This association is a Sacramento based organization dedicated advance the knowledge of the Hmong community. I want to help educate the H mong community on bully within the community because all forms of bullying can have an impact on these children who will be able to help shape our society and our health care system (â€Å"Hmong Womens Association†, 2012).My next professional goal is to work in a health care facility within a hospital setting. The Job I wish to acquire in the Health care facility is to be a management coordinator for the utilization unit at a hospital. Job Skills The Job skills that I currently have for the health care management utilization coordinator is I am a confident speaker, the desire of being a patient advocate, and the self will to retain and gain higher education and the ability to adapt to changes.I believe that my skills are essential to this Job because I am able to speak confidently on the work I do, my desire for being a patient advocate will ensure that patients are receiving quality of care, attaining higher education to expand my knowledge in the field and the ability to ad apt to the new health care reform that will be taking place within the health care industry. The skills that I need to hone for this Job is to advance my knowledge in technology. Another skill that is needed is on now to use an excel program. As the health care industry evolves so does technology.I believe that technology is forever changing and growing. Therefore, I need to have knowledge because health care systems are becoming paperless and becoming digital. For example, the use of video conference is very common in the health care field and the knowledge to run such program is beneficial. The use of excel spreadsheet is a growing skill within this field because it helps track the patients ases that are and need to coordinated. Having such skill is extremely beneficial because it will help organizing cases to make sure patients receive quality care (â€Å"Microsoft Excel Spreadsheet†, 2012).Another skill that I may need to obtain is experience of the Job. I see while Job s earch on Monster Jobs is health sectors are searching for candidates with Job experience. While looking through there I also notice that for this Job it requires me to have a degree of Bachelor or higher. I can understand that within this economy, the education I have is a good aspect, however I must be able to market my education and my knowledge (Health Care Administration, 2011). Achieving Professional goals I think that my career goals are within reach and I can accomplish anything that I sent my will to.My plan to achieve these goals is to keep expanding my knowledge and education myself on the changing and evolving health care system. I also plan to further my education and obtain a Master's degree in management and leadership. I want to obtain a degree higher than bachelor degree because I want to my children, family and community to look up to me and realize that education will be a lifetime orth investment. The professional organizations that will be able to help me achieve these goals are to belong to the American College of Health Executives

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