Fuel cell ppt

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    fuel cell ppt

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    Latest Highest Rated. Title: Fuel Cells 1 Fuel Cells The long awaited arrival 2 Fuel cells have been just 10 more years away from everyday use over 50 years Several problems have contributed to this Materials Hydrogen storage safety Economics Recent advances in engineered materials have made fuel cells a viable design option Proton exchange membranes PEM Composite and nanotechnology Fuel cell technology is being used today Busses, motorcycles, remotely operated aircraft Lawnmowers, laptops, cameras Home power generation units up to 10 KW 3 Fuel cells are a power source that is becoming increasingly desirable Many designs require a power source Realize the benefits and the costs Be aware of emerging technologies 4 So what exactly is a fuel cell?

    Very little flow is needed Now turn off the valve and wait 1 min What happens? Why or why not? Calculate the mass of Pt in the PEM assume 0. Whether your application is business, how-to, education, medicine, school, church, sales, marketing, online training or just for fun, PowerShow. And, best of all, most of its cool features are free and easy to use.

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    That's all free as well!Will it contribute to energy independence? Stephen Cohen and Nathan Bonnett scohen gmail.

    Fuel Cell PowerPoint PPT Presentations

    What is a Fuel Cell? A Fuel Cell is an electrochemical device that combines hydrogen and oxygen to produce electricity, with water and heat as its by-product.

    Why is Fuel Cell Technology Important? Since conversion of the fuel to energy takes place via an electrochemical process, not combustion It is a clean, quiet and highly efficient process- two to three times more efficient than fuel burning. How does a Fuel Cell work? It operates similarly to a battery, but it does not run down nor does it require recharging As long as fuel is supplied, a Fuel Cell will produce both energy and heat.

    A Fuel Cell consists of two catalyst coated electrodes surrounding an electrolyte One electrode is an anode and the other is a cathode. The process begins when Hydrogen molecules enter the anode The catalyst coating separates hydrogens negatively charged electrons from the positively charged protons. The electrolyte allows the protons to pass through to the cathode, but not the electrons Instead the electrons are directed through an external circuit which creates electrical current.

    While the electrons pass through the external circuit, oxygen molecules pass through the cathode There the oxygen and the protons combine with the electrons after they have passed through the external circuit When the oxygen and the protons combine with the electrons it produces water and heat.

    Individual fuel cells can then be placed in a series to form a fuel cell stack The stack can be used in a system to power a vehicle or to provide stationary power to a building. Major Types of Fuel Cells In general all fuel cells have the same basic configuration - an electrolyte and two electrodes Different types of fuel cells are classified by the kind of electrolyte used The type of electrolyte used determines the kind of chemical reactions that take place and the temperature range of operation.

    Major Types of Fuel Cells Proton Exchange Membrane PEM This is the leading cell type for passenger car application Uses a polymer membrane as the electrolyte Operates at a relatively low temperature, about degrees Has a high power density, can vary its output quickly and is suited for applications where quick startup is required making it popular for automobiles Sensitive to fuel impurities.

    Major Types of Fuel Cells Molten Carbonate Promises high fuel-to-electricity efficiency and the ability to utilize coal based fuels Uses an electrolyte composed of a molten carbonate salt mixture Require carbon dioxide and oxygen to be delivered to the cathode Operates at extremely high temperatures degrees Primarily targeted for use as electric utility applications Have been operated on hydrogen, carbon monoxide, natural gas, propane, landfill gas, marine diesel and simulated coal gasification products.

    Major Types of Fuel Cells Molten Carbonate Fuel Cell Because of the extreme high temperatures, nonprecious metals can be used as catalysts at the anode and cathode which helps reduces cost Disadvantage is durability The high temperature required and the corrosive electrolyte accelerate breakdown and corrosion inside the fuel cell.

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    Major Types of Fuel Cells Alkaline Fuel Cell Requires pure hydrogen and oxygen because it is very susceptible to carbon contamination Purification process of the hydrogen and oxygen is costly Susceptibility to poisoning affects cells lifetime which also affects the cost.

    Major Types of Fuel Cells Regenerative Fuel Cells Currently researched by NASA This type of fuel cell involves a closed loop form of power generation Uses solar energy to separate water into hydrogen and oxygen Hydrogen and oxygen are fed into the fuel cell generating electricity, heat and water The water byproduct is then recirculated back to the solar-powered electrolyser beginning the process again.

    Importance of Hydrogen Fuel Cells require highly purified hydrogen as a fuel Researchers are developing a wide range of technologies to produce hydrogen economically from a variety of resources in environmentally friendly ways.

    Importance of Hydrogen Hydrogen is a secondary energy resource, meaning it must be made from another fuel Hydrogen can be produced from a wide variety of energy resources including: Fossil fuels, such as natural gas and coal Nuclear energy Renewable resources, such as solar,water, wind and biomass.

    Hydrogen Production The biggest challenge regarding hydrogen production is the cost Reducing the cost of hydrogen production so as to compete in the transportation sector with conventional fuels on a per-mile basis is a significant hurdle to Fuel Cells success in the commercial marketplace. Hydrogen Production Gasification Process in which coal or biomass is converted into gaseous components by applying heat under pressure and in the presence of steam A subsequent series of chemical reactions produces a synthesis gas which reacts with steam to produce more hydrogen that can be separated.

    Hydrogen Production Renewable Liquid Reforming Biomass is processed to make renewable liquid fuels, such as ethanol or bio-oil, that are then reacted with high-temperature steam to produce hydrogen This process is very similar to reforming natural gas. Hydrogen Production Electrolytic Processes Electrolytic processes use an electric current to split water into hydrogen and oxygen The electricity required can be generated by using renewable energy technologies such as wind, solar, geothermal and hydroelectric power.

    Hydrogen Production Photolytic Processes Uses light energy to split water into hydrogen and oxygen These processes are in the very early stages of research but offer the possibility of hydrogen production which is cost effective and has a low environmental impact. Hydrogen Production Auto manufacturers have worked on developing technology that would allow fuel cell cars to continue using gasoline A reformer on the fuel cell car would convert the gasoline to hydrogen onboard the automobile Funding for this technology has been pulled due to unsatisfactory efficiency.

    How will the hydrogen be stored?Copy embed code:.

    fuel cell ppt

    Automatically changes to Flash or non-Flash embed. WordPress Embed Customize Embed. URL: Copy. Do you like it?? Fuel cells combine hydrogen and oxygen electrochemically to produce electricity. The only by-products are water and useful heat.

    The first fuel cell was built in by Sir William Grove, a lawyer and gentleman scientist. Serious interest in the fuel cell as a practical generator did not begin until the 's, when the U.

    Fuel cells furnished power for the Gemini and Apollo spacecraft, and still provide electricity and water for the space shuttle. Conducts the electrons that are freed from the hydrogen molecules so that they can be used in an external circuit. Etched channels disperse hydrogen gas over the surface of catalyst. Cathode Positive post of the fuel cell Etched channels distribute oxygen to the surface of the catalyst. Conducts electrons back from the external circuit to the catalyst Recombine with the hydrogen ions and oxygen to form water.

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    Electrolyte Proton exchange membrane. Specially treated material, only conducts positively charged ions.

    Introduction to Fuel Cell Applications

    Membrane blocks electrons. Catalyst Special material that facilitates reaction of oxygen and hydrogen Usually platinum powder very thinly coated onto carbon paper or cloth. Follow us on:. Go to Application.

    Reinventing the fuel cell: Dr. Yushan Yan at TEDxUD

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    Dislike it 0.The first commercial use of fuel cells came more than a century later in NASA space programs to generate power for satellites and space capsules. Since then, fuel cells have been used in many other applications. Fuel cells are used for primary and backup power for commercial, industrial and residential buildings and in remote or inaccessible areas. They are also used to power fuel cell vehicles, including forklifts, automobiles, buses, boats, motorcycles and submarines.

    One of the most promising devices is the Solid Oxide Fuel Cell. SOFC is a device that generates electricity directly from oxidizing a fuel. The main issue of SOFC is the high operating temperature that influence negatively the performance of the device.

    Fuel cells are different from batteries in requiring a continuous source of fuel and oxygen usually from air to sustain the chemical reaction, whereas in a battery the chemical energy comes from chemicals already present in the battery.

    A solid oxide fuel cell is a device that generates electricity directly from oxidizing a fuel it generates energy based on a chemical relation. It has been used in the U. The AFC is very susceptible to contamination, so it requires pure hydrogen and oxygen. It is also very expensive, so this type of fuel cell is unlikely to be commercialized.

    It operates at a higher temperature than PEM fuel cells, so it has a longer warm-up time. This makes it unsuitable for use in cars. They operate at 1, F Cso they also generate steam that can be used to generate more power. They have a lower operating temperature than the SOFC, which means they don't need such exotic materials. This makes the design a little less expensive.

    I had the chance to do a study of how SOFC works, the different designs and Applications and the disadvantages. This project is more of a research project. Jazouli - www. Learn more about Scribd Membership Home.

    fuel cell ppt

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    Fuel Cells - PowerPoint PPT Presentation

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    WordPress Embed Customize Embed. URL: Copy. Presentation Description No description available. The chemical energy of a fuel is converted to electricity by electrochemical means.

    Figure shows the schematic of a fuel cell. The fuel, typically hydrogen, is sent to the anode and oxygen from air is sent to the cathode. The electrons generated at the anode due to dissociation of hydrogen pass through an external circuit to the cathode, thereby generating electricity. At the cathode, the hydrogen ion, electron, and oxygen react to form water. Several such cells are stacked in series to get the required power output. How it is work?

    In principle, a fuel cell operates like a battery. Unlike a battery, a fuel cell does not run down or require recharging. It will produce energy in the form of electricity and heat as long as fuel is supplied.

    A fuel cell consists of two electrodes sandwiched around an electrolyte. Oxygen passes over one electrode and hydrogen over the other, generating electricity, water and heat. Hydrogen fuel is fed into the "anode" of the fuel cell. Oxygen or air enters the fuel cell through the cathode. Encouraged by a catalyst, the hydrogen atom splits into a proton and an electron, which take different paths to the cathode.

    The proton passes through the electrolyte. The electrons create a separate current that can be utilized before they return to the cathode, to be reunited with the hydrogen and oxygen in a molecule of water. A fuel cell system which includes a "fuel reformer" can utilize the hydrogen from any hydrocarbon fuel - from natural gas to methanol, and even gasoline.

    Several universities and research organizations are involved in the areas of fuel cells, reformers,and hydrogen storage. In the system developed by the Indian Space Research Center, the fuel cells are expected to produce 80 kilowatts of electric power, using hydrogen from eight high-pressure bottles stored on top of the bus.

    The central government has said it wants to have 1 million hydrogen-fueled vehicles on the road by The Indian Space Research Organization said it has developed hydrogen fuel cells using the technology perfected during its recent mission to the moon.

    Finally, hydrogen-powered fuel cells, which emit only clean water and electricity, may become the ultimate power source of the 21st century. The ultimate eco fuel will combine high efficiency with minimal environmental impact.

    It must be available in sufficient quantities, and it must be possible to harness and refine economically. Fuel cell technology is becoming increasingly popular in power generation and automotive applications.

    Advantages include zero emissions and high efficiency. The most common fuel used in a fuel cell is hydrogen Fuel cell cars with I. Excellent part load characteristics.

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    Zero emission. Long operating period between failures. No rotating parts in the main hard ware components. Negligible noise pollution. Fuel storage problem. Less Refueling station.Toggle navigation.

    Help Preferences Sign up Log in. Featured Presentations. Fuel Cell Engineering pres. Ajay K. The operation of such a cell would have diverse applications in many sciences Membrane - Allows for H passage. Often Platinum Exposed to air. Whole Ecoli cells PEB solution.

    Prolonged power output at 24 hrs Automotive fuel cell market Fuel Cell Vehicle market size to exceed 14, units by - Automotive fuel cell market size was estimated at over 5, units inand is expected to grow at a CAGR of Growing consciousness regarding harmful emissions from gasoline and conventional fuel vehicles is expected to drive the industry over the forecast period.

    Automotive fuel cell market size was estimated at over 5, units inand is expected to grow at a CAGR of British Columbia, Canada. CNG dual fuel.

    fuel cells ppt

    Tourist Boat Uses of Solid Oxide Fuel Cells Fuel cell Technology - fuel cell Grove s invention was based on idea of reverse Global Fuel Cell Market - The global fuel cell market will grow by The global fuel cell market will grow by Residential Power Units There are few residential fuel cell power units on the market but many designs are undergoing testing Fuel Cell Basics - Electrolysis in Fuel Cells - Busses, motorcycles, remotely operated aircraft.

    Lawnmowers, laptops, cameras Toyota, Honda. Auto manufacturers. Consumer products. Fuel cells power cameras Busses, motorcycles, remotely operated aircraft.

    Herb Hess Dr.Fuel cells have been researched and developed for use in several applications since the early 's. Fuel cells can be used for portable, backup, transportation, and stationary power applications.

    This article briefly describes some of these uses for fuel cells. Portable fuel cells are lightweight, long-lasting, portable power sources that prolong the amount of time a device can be used without recharging. In comparison, secondary rechargeable batteries have battery charger systems that consist of AC chargers that require an outlet to be charged or DC chargers that will recharge your batteries from other batteries. Rechargeable batteries are not practical for certain portable and military electronic applications because they can be heavy and not meet the power requirements.

    Some portable fuel cell applications include laptops, cellular phones, power tools, military equipment, battery chargers, unattended sensors, and unmanned aerial and underwater vehicles. A notable difference between rechargeable batteries and fuel cells is that a fuel cell needs a continuous supply of fuel. Some fuel types that have been used with fuel cells include metal hydrides, methanol, formic acid, ethanol, and of course, hydrogen.

    For portable fuel cells, methanol and ethanol can be supplied to the fuel cell as fuel or a fuel reformer can also be attached to the fuel cell package. Backup power systems provide power when the primary power source is disrupted. Fuel cells used for backup power come in many sizes and types and typically use hydrogen as their fuel.

    Backup fuel cells can be commercialized more quickly than other fuel cells because they do not depend on upon the implementation of a hydrogen infrastructure. Some backup power applications include computer systems, manufacturing facilities, homes, and utility substations. The PEM fuel cell with compressed hydrogen fuel is the most popular fuel cell type used for backup power applications. There are many fuel options available such as compressed hydrogen, liquid hydrogen, propane, natural gas as well as many other fuel types.

    An electrolyzer system is a good option for backup power applications because it can produce hydrogen on demand. The electrolyzer can be used with electricity generated by solar panels, a wind source, a nuclear source or electricity generated by the local power company. Fuel cells can be used for many transportation applications including automobiles, buses, utility vehicles, and scooters and bicycles. Many fuel cell demonstration vehicles have been created for each of these vehicle types.


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    Fuel cell ppt

    It is interesting to note that as fuel use has developed through time the percentage of hydrogen content in the fuel has increased. It seems a natural progression that the fuel of the future will be hydrogen.

    The two principal reactions in the burning of a hydrocarbon fuel are the formation of water and the formation of water becomes more significant, resulting in proportionality lower emissions of carbon dioxide.

    A wide range of people, from energy companies through to automobile manufacturers are working to develop fuel cells and the accompanying infrastructure. A trend in the production of power is clearly visible: The 19th century was the century of the steam engine, The 20th century was the century of the internal combustion engine, The 21st century will be the century of the fuel cell.

    What is a fuel cell? A fuel cell is a device that generates electricity by a chemical reaction.

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    Every fuel cell has two electrodes, one positive and one negative, called, respectively the anode and the cathode. The reactions that produce electricity takes place at the electrodes.

    Every fuel cell has an electrolyte, which carries electrically charge particles from one electrode to the other, and a catalyst, which speeds the reactions at the electrodes.

    A fuel cell is an electrochemical cell that converts chemical energy from a fuel into electric energy. Electricity is generated from the reaction between a fuel supply and oxidizing agent. The reactants flow into the cell, and the reaction products flow out of it, while the electrolyte remains within it. Fuels can operate continuously as long as the necessary reactant and oxidant flows are maintained.

    The electrolyte substance. The electrolyte substance usually defines the type of a fuel cell. The fuel that is used. The most common fuel is hydrogen. The anode catalyst, which break down the fuel into electrons and ions. The anode catalyst is usually made up of very fine platinum powder. The cathode catalyst, which turns the ions into the waste chemicals like water or carbon dioxide. The cathode catalyst is often made up of nickel.

    Alkali fuel cells operate on compressed hydrogen and oxygen. They generally use a solution of potassium hydroxide chemically KOH in water as their electrolyte. Alkali cells were used in Apollo spacecraft to provide both electricity and drinking water. Molten Carbonate fuel cells MCFC use high temperature compounds of salt like sodium or magnesium carbonates chemically, CO3 as the electrolyte.

    Fuel Cell Seminar Report with ppt and pdf

    Efficiency ranges from 60 to 80 percent, and operating temperature is about degrees C 1, degrees F. The high temperature limits damage from carbon monoxide poisoning of the cell and waste heat can be recycled to make additional electricity. Their nickel electrodecatalysts are inexpensive compared to the platinum used in other cells. But the high temperature also limits the materials and used of MCFCs- they would probably be too hot for home use.

    Efficiency ranges from 40 to 80 percent, and operating temperature is between to degrees C about to degrees F Existing phosphoric acid cells have outputs up to kW, and 11MW units have been tested. PAFCs tolerate a carbon monoxide concentration of about 1. If gasoline is used, the sulfur must be removed.A fuel cell is an electrochemical cell that converts the chemical energy of a fuel often hydrogen and an oxidizing agent often oxygen [1] into electricity through a pair of redox reactions.

    fuel cells ppt

    Fuel cells can produce electricity continuously for as long as fuel and oxygen are supplied. The first fuel cells were invented by Sir William Grove in The first commercial use of fuel cells came more than a century later following the invention of the hydrogen—oxygen fuel cell by Francis Thomas Bacon in The alkaline fuel cellalso known as the Bacon fuel cell after its inventor, has been used in NASA space programs since the mids to generate power for satellites and space capsules.

    Since then, fuel cells have been used in many other applications. Fuel cells are used for primary and backup power for commercial, industrial and residential buildings and in remote or inaccessible areas. They are also used to power fuel cell vehiclesincluding forklifts, automobiles, buses, boats, motorcycles and submarines. There are many types of fuel cells, but they all consist of an anodea cathodeand an electrolyte that allows ions, often positively charged hydrogen ions protonsto move between the two sides of the fuel cell.

    At the anode a catalyst causes the fuel to undergo oxidation reactions that generate ions often positively charged hydrogen ions and electrons. The ions move from the anode to the cathode through the electrolyte. At the same time, electrons flow from the anode to the cathode through an external circuit, producing direct current electricity. At the cathode, another catalyst causes ions, electrons, and oxygen to react, forming water and possibly other products.

    Fuel cells are classified by the type of electrolyte they use and by the difference in startup time ranging from 1 second for proton exchange membrane fuel cells PEM fuel cells, or PEMFC to 10 minutes for solid oxide fuel cells SOFC. A related technology is flow batteriesin which the fuel can be regenerated by recharging. Individual fuel cells produce relatively small electrical potentials, about 0.

    The fuel cell market is growing, and in Pike Research estimated that the stationary fuel cell market will reach 50 GW by The first references to hydrogen fuel cells appeared in In a letter dated October but published in the December edition of The London and Edinburgh Philosophical Magazine and Journal of ScienceWelsh physicist and barrister Sir William Grove wrote about the development of his first crude fuel cells.

    He used a combination of sheet iron, copper and porcelain plates, and a solution of sulphate of copper and dilute acid. His letter discussed current generated from hydrogen and oxygen dissolved in water. The fuel cell he made used similar materials to today's phosphoric acid fuel cell.

    InW. Thomas Grubb, a chemist working for the General Electric Company GEfurther modified the original fuel cell design by using a sulphonated polystyrene ion-exchange membrane as the electrolyte.

    Three years later another GE chemist, Leonard Niedrach, devised a way of depositing platinum onto the membrane, which served as catalyst for the necessary hydrogen oxidation and oxygen reduction reactions. This became known as the "Grubb-Niedrach fuel cell". This was the first commercial use of a fuel cell. This system used potassium hydroxide as the electrolyte and compressed hydrogen and oxygen as the reactants.

    Later inBacon and his colleagues demonstrated a practical five-kilowatt unit capable of powering a welding machine. Inthe first hydrogen fuel cell automobile was developed by Roger Billings. UTC Power was the first company to manufacture and commercialize a large, stationary fuel cell system for use as a co-generation power plant in hospitals, universities and large office buildings.

    RES The date was chosen in recognition of the atomic weight of hydrogen 1. Fuel cells come in many varieties; however, they all work in the same general manner. They are made up of three adjacent segments: the anodethe electrolyteand the cathode. Two chemical reactions occur at the interfaces of the three different segments.Fresh starts are nothing new to supporters after welcoming Marco Silva in January and then Leonid Slutsky in June, but the appointment of Nigel Adkins on Thursday is arguably the most crucial of this turbulent calendar year.

    City need this to work. Relegation from the Premier League was a blow but falling into League One this season would be close to a catastrophe. That danger was outlined by Adkins on his opening day in office and for all he outlined ambitions for an eventual top-flight return, there is a more pressing battle to be won. Not since October 21 has this team won in the Championship and confidence is suffering as a result.

    Adkins will have a wheelbarrow full of ideas but only wins can really pick up a suffering team. Only once in 13 games have the Londoners been beaten, triggering a smooth ascent from 23rd to 11th under Dean Smith. The visitors should provide inspiration for a City side seeking their own revival in the Championship but, as Adkins has warned, the turnaround might well require patience.

    NIGEL Adkins will be without top scorer Jarrod Bowen as he aims to mark his first game as head coach with a win over Brentford. Kevin Stewart and Markus Henriksen are expected to overcome their own injury problems from last weekend, but there is a question mark over Michael Hector. The defender, who played under Adkins at Reading, has been suffering from a hamstring injury and Ondrej Mazuch will continue if Hector is unavailable.

    Stephen Kingsley (groin) is close to a comeback but Adkins has inherited a squad depleted by long-term injuries with Ryan Mason (fractured skull), Moses Odubajo (knee), Abel Hernandez (Achilles) and Will Keane (knee) all out of action.

    Brentford boss Dean Smith is without Lasse Vibe for the trip to the KCOM Stadium but Neal Maupay makes a timely return from suspension. The Dutch winger missed last weekend with a minor hamstring injury but has been declared fit ahead of travelling to East Yorkshire. Midfielder Alan Judge is a long-term absentee. The 29-year-old has not played for over 18 months now after breaking his tibia and fibula but is hopefully finally closing in on a long-awaited return to action in the early months of 2018.

    Brentford have drawn a blank just once in their last 15 games and among their chief threats is Ollie Watkins. The 21-year-old, snapped up from Exeter City in the summer, has already netted eight goals from the left wing this season.

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    Tomori has shown himself to be a talented defender during his time on loan from Chelsea but, like so many around him at City, he has to eradicate the lapses in concentration from his game. What makes the current run all the more extraordinary are the results that preceded it.

    Not until September 23 did they finally record their first win of the season but what has followed has lifted the Bees from 23rd to 11th.Looking for NFL consensus data on how Vegas is betting each game or NCAA football power rankings to help with your handicapping. Subscribe TodayJon is our sports betting analyst and your best friend in betting with 15 years of industry experience.

    Driven by instincts and analytics, Joe puts more trust in numbers than the athletes producing those numbers. Understanding sports betting odds is critical to becoming a successful sports bettor or even to give yourself a better chance at winning pick em pools and other contests. How is the betting line set. Why do lines move during the week on the NFL odds list.

    So whether you are betting the point spread, futures or pucklines, learning about a sports odds should be one of your first focuses. And OddsShark is the place to research everything to do with sports odds and live lines. Click around and improve your chances of beating the point spread. We've enlisted experts to help explain poker odds and casino pros who can advise on the math behind blackjack strategy.

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    And robust new sections around wagering events such as special features on Super Bowl betting, how to make the best March Madness bracket picks and how to find the best odds when betting the Kentucky Derby. A day after a 106-102 loss to the Indiana Pacers, the Cavs welcome the Philadelphia 76ers to town on Saturday.

    Read MoreMatchupThe UNDER is 14-5 in the last 19 meetings between the Cavaliers and 76ers. The Ravens are 10-2 ATS in their last 12 games vs divisional opponents and will look to cash another ticket for their backers Sunday night in Pittsburgh.

    The Sooners passing attack ranks in the top five in the nation in yards, yards per attempt, completion percentage and touchdowns. On the other side of the ball, the Bulldogs defense sits in the top 10 in passing yards allowed and yards per pass attempt.

    Read MoreMatchupOklahoma QB Baker Mayfield has thrown 13 TDs and 0 INTs in the last 4 games. Now, after splitting those two contests, it is time for the Tigers and Crimson Tide to compete in the highly anticipated rubber match. Read MoreMatchupThe OVER is 2-0 in the last 2 games between Clemson and Alabama with the teams averaging a combined 75.

    Joe OsborneDriven by instincts and analytics, Joe puts more trust in numbers than the athletes producing those numbers. Explore the year a word first appeared Definition of odds 1 a archaic : inequalities b obsolete : degree of unlikeness 2 a : an amount by which one thing exceeds or falls short of another won the election by considerable odds b (1) : a difference favoring one of two opposed things overwhelming odds (2) : a difference in terms of advantage or disadvantage what's the odds, if thinking so makes them happy Flora Thompson c (1) : the probability that one thing is so or will happen rather than another : chances the odds are against it (2) : the ratio of the probability of one event to that of an alternative event 3 : disagreement, variance usually used with at faculty and administration often are at odds on everything W.

    Brock born 1930 4 a : special favor : partiality b : an allowance granted by one making a bet to one accepting the bet and designed to equalize the chances favoring one of the bettors c : the ratio between the amount to be paid off for a winning bet and the amount of the bet by all odds : in every way : without question by all odds the best book of the year NEW.

    Learn More about odds Thesaurus: All synonyms and antonyms for odds Spanish Central: Translation of odds Nglish: Translation of odds for Spanish speakers Britannica English: Translation of odds for Arabic speakers Britannica.

    This website does not endorse or encourage illegal gambling.After a while you will get used to noticing these football betting tips yourself. If a team or player has a reputation of being good in the long term, use this reputation for your long term bet predictions.

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    These are premiership football betting tips, but can be applied to any league or competition, and even other sports. This is the same as saying there will be 2 goals or under, or 3 goals and over.

    So why is this a good bet to place. This is a great bet to place because it gives you more chance to win and makes the odds better in big games. Using Manchester United and Chelsea againif these two teams are playing each other, the odds are likely to be quite low for each team, with a possibility of a draw as well. Another reason why this betting tip works so well is that you can actually calculate and predict the outcomes by adding together the average goals scored by each team from all other games they have played in the current season.

    If you think a factor might affect one of the teams form, you can use this to your advantage as well and bet on more or less than the expected goals by looking at this factor. If you are feeling confident you can also bet on the over 3.

    This is one of our favourite football betting tips and we use it all the time when betting. There are often factors that may affect a team that is expected to do well which reduce their performance, so you can benefit by betting on the other team. However, there are many other things that also affect the performance of a team and its players.

    This betting tip is important because there are so many variables. Consider the motivation and team spirit of the team you are betting on. Motivation can be very important and can really affect team performances. The size of the match often motivates players more. Sometimes small teams beat giants just because they really want to beat them.

    Sometimes one team has a lot more to lose or gain. You just need to enter promo code C30 and remember that the free bet offer is only valid on odds of 1. Another thing that affects team morale is the coach. If there is a new coach at a team, then the players often play better and improve performances for a few matches.

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    This can be because they are trying to impress the new coach and stay in the starting IX, or just because they are happier with the new club structure. There are a number of things such as injuries and illnesses that can occur at any point up to the start of a game.It's also possible to specify both a value and a confidence.

    Finally, note that it is also possible to specify support, value, and confidence parameters in the same query. Filtering and Paginating Fields from a Model A model might be composed of hundreds or even thousands of fields.

    Thus when retrieving a model, it's possible to specify that only a subset of fields be retrieved, by using any combination of the following parameters in the query string (unrecognized parameters are ignored): Fields Filter Parameters Parameter TypeDescription fields optional Comma-separated list A comma-separated list of field IDs to retrieve.

    To update a model, you need to PUT an object containing the fields that you want to update to the model' s base URL.

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    Once you delete a model, it is permanently deleted. If you try to delete a model a second time, or a model that does not exist, you will receive a "404 not found" response. However, if you try to delete a model that is being used at the moment, then BigML.

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    To list all the models, you can use the model base URL. By default, only the 20 most recent models will be returned. You can get your list of models directly in your browser using your own username and API key with the following links. You can also paginate, filter, and order your models.

    This is valid for both regression and classification models. Objective Weights: submitting a specific weight for each class in classification models. Automatic Balancing: setting the balance argument to true to let BigML automatically balance all the classes evenly. Let's see each method in more detail. We can use it as an input to create a model that will use to weight each instance accordingly.

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    In this case, fraudulent transactions will weigh 10 times more than valid transactions in the model building computations. You can just use one of the rows and add the corresponding count as a weight field. This will reduce the size of your sources enormously. Objective Weights The second method for adding weights only applies to classification models.

    Each instance will be weighted according to its class weight. This means the example below is equivalent to the example above. If every weight does end up zero (this is possible with sampled datasets), then the resulting model will have a single node with a nil output.

    Each instance will be weighted individually according to the weight field's value. Confidence, importance, and pruning calculations also take weights into account. You can create an ensemble just as you would create a model with the following three basic machine learning techniques: bagging, random decision forests, and gradient tree boosting.

    Bagging, also known as bootstrap aggregating, is one of the simplest ensemble-based strategies but often outperforms strategies that are more complex.

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    The basic idea is to use a different random subset of the original dataset for each model in the ensemble.Margot RobbieSupporting Actor 1. Richard JenkinsSupporting Actress 1. Kristen Scott Thomas 4. Octavia SpencerBest Director 1. Guillermo Del Toro 3. Greta GerwigThe huge contenders this year are Dunkirk, The Shape of Water, and Call Me By Your Name.

    After his comments about the Hollywood Foreign Press, will Gary Oldman win the Golden Globe. Or even be nominated. I can see a that happening. But I honestly think it will not affect his chances at the other important awards and the Oscars. After his comments about Hollywood Foreign Press, will Gary Oldman win the Golden Globe. I can see that happening. Can someone explain to me the Holly Hunter thing.

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