Batteries :: essays research papers

BATTERIES There are many kinds of batteries which consist of different materials in order to produce an electric charge. Here are some of the most common batteries, what they consist of and how they work. Bichromate Cell (see picture # 1) A battery is a device which converts chemical energy into electrical energy. A battery usually consists of two or more cells connected in series or parallel, you can also have a single cell battery. All cells consist of a positive electrode, and a negative electrode. An electrolyte is a liquid substance capable of conducting electricity. In this substance one of the electrodes will react producing electrons, while the other will except electrons. When the electrodes are connected to a device to be powered, called a load, an electrical current flows. Batteries where the chemicals cannot be returned to their original form once the energy has been converted (that is, batteries that have been discharged) are called primary cells or voltaic cells. Batteries in which the chemicals can be returned to its original form by passing an electric current through them in the direction opposite that of normal cell operation are called secondary cells, rechargeable cells, storage cells, or accumulators. Dry Cell Battery(see picture # 2) This is the most common battery that people use today like Energizer or Duracle batteries. The most common form of a primary cell is the Leclanche cell, invented by a French chemist Georges Leclanche in the 1860s. The electrolyte for this battery consisted of a mixture of ammonium chloride and zinc chloride made into a paste. The negative electrode is zinc, and is the outside shell of the cell, and the positive electrode is a carbon rod that runs through the center of the cell. This rod is surrounded by a mixture of carbon and manganese dioxide. This battery produces about 1.5 volts. Another widely used primary cell is the zinc-mercuric-oxide cell, more commonly called a mercury battery. It can be made in the shape of a small flat disk and is used in this form in hearing aids, and electric wristwatches. The negative electrode consists of zinc, the positive electrode is of mercuric oxide, and the electrolyte is a solution of potassium hydroxide. The mercury battery produces about 1.34 volts. The fuel cell is another type of primary cell. It is unique in that the chemicals aren't contained within the cell but are supplied from outside of the cell.

Quantitative Analysis for Management

Raptor Fuels produces three grades of gasoline Regular, Premium, and Super. All of these are produced by blending two types of crude oil Crude A and Crude B. The two types of crude contain specific ingredients which help in determining the octane rating of gasoline. The important ingredients and the costs are contained in the following table: [pic] .:. In order to achieve the desired octane ratings, at least 41% of Regular gasoline should be Ingredient 1; at least 44% of Premium gasoline must be Ingredient 1, and at least 48% of Super gasoline must be Ingredient 1.Due to current contract commitments, Raptor Fuels must produce as least 20,000 gallons of Regular, at least 15,000 gallons of Premium, and at least 10,000 gallons of Super. Formulate a linear program that could be used to determine how much of Crude A and Crude B should be used in each of the gasolines to meet the demands at the minimum cost. What is the minimum cost? How much of Crude A and Crude B are used in each gallon of the different types of gasoline?SOLUTION: Let A1 = gallons of crude A used in Regular A2 = gallons of crude A used in Premium A3 = gallons of crude A used in Super B1 = gallons of crude B used in Regular B2 = gallons of crude B used in Premium B3 = gallons of crude B used in Super Minimize cost = 0. 42A1 + 0. 42A2 + 0. 42A3 + 0. 47B1 + 0. 47B2 + 0. 47B3 Subject to 0. 40A1 + 0. 52B1 ( 0. 41(A1 + B1) 0. 40A2 + 0. 52B2 ( 0. 44(A2 + B2) 0. 40A3 + 0. 52B3 ( 0. 8(A3 + B3) A1 + B1 ( 20,000 A2 + B2 ( 15,000 A3 + B3 ( 10,000 A1, A2, A3, B1, B2, B3 ( 0 The solution is A1 = 18,333. 33 gallons of crude A used in Regular; A2 = 10,000 gallons of crude A used in Premium; A3 = 3,333. 33 gallons of crude A used in Super; B1 = 1. 666. 67 gallons of crude B used in Regular, B2 = 5,000 gallons of crude B used in Premium; B3 = 6,666. 67 gallons of crude B used in Super; total cost = $19,566. 67.

The Environmental Impacts Of The Gas Fracking Essay

ESSAY: â€Å"Should Australia continue to allow coal seams to be mined when the environmental impacts are unknown ?† Australia should not approve more coal seam gas mining applications and should urgently investigation the environmental impacts of the Fracking Process. The coal seam gas fracking process has been promoted as the new clean energy yet the process has been shown to cause leaks of carcinogenic chemicals and methane gas in multiple countries including America and Australia. It is also linked to the release of the radioactive Carbon, C226, and potential cancers from silicate. (REF) Australian Federal Mining laws cover extraction for coal and normal gas whereas Coal Seam Gas extraction is covered under it s own laws and regulations that do not requirea Environmental Study (ESI) of the processes water impacts(REF). A Federal body was created in 2004 called the National Water Commission. This Commission was regulated to manage the Great Artesian Basin (GAB) as it covers nearly a quarter of Australia and covers Queensland, NSW and the Northern Territory. This enabled a Federal overview of Australia s resources and decisions. One of it s goals was to promote debate about water issues and respond to the impacts coal seam gas may have on water resources (REF). This Commission was due to release a report in 2015 on the GAB and CSG impacts but the Federal government abolished the Commission in September, 2014. Now the GAB is under a Productivity Commission. (REF). InShow MoreRelatedThe Economic Report On Fracking, Is It Worth It?1465 Words   |  6 PagesEconomic Report Fracking, is it Worth it? Ron Withall Business 630, Dr. Lynn Reaser SUBJECT Our dependence on foreign oil and natural gas has created a vulnerability affecting our national security and economic stability. 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However, according to the Bureau of Resource and Energy Economics (BREE) there is enough conventional natural gas in Australia to supply all of Australia at current l evels for more than 6130 years. Fracking extracts hydrocarbons from previouslyRead MoreHydraulic Fracturing And Fracking : A Controversial Topic Across The Globe1489 Words   |  6 PagesHydraulic Fracturing or Fracking, as it more commonly known, is a very controversial topic across the globe. In the United States, its status remains the same. Hydraulic fracturing is a method of oil and natural gas production. The process includes the drilling of pipes 1-1.5 miles within the earth. After that pipe is secured and has an impermeable layer around the pipe, a tool that creates small holes within the impermeable layer is sent down through the pipe. It creates holes in the pipe that allowsRead MoreCritical Analysis of Fracking1054 Words   |  5 Pagesis clear that the US needs to find an alternative source of energy. 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