Disadvantages Of Using Thermodynamics

Disadvantages Of Using Thermodynamics Please find my enclosed my report entitled :What kind of things that related with thermodynamics field can contribute our daily life. I trust you will find the report has covered the question in a comprehensive fashion. Should there be any questions regarding this report, please do not hesitate to contact me at the address. I will also include my email address, so that initial contact can be made and further arrangements made should that be necessary. The research report will describe that what is thermodynamics? What are the advantage of thermodynamics? How thermodynamics will make our life easy? The research report will show different branches of thermodynamics and how it works. The report will also highlight some histories of thermodynamics .On the other hand, there are some analysis and facts relating with our daily life easier and more efficient. Justification The main reason for choosing this report is because Im interested in the thermodynamics, which is our daily exposure. I also want to specify my study in thermodynamics, which is major branch of my study which in mechanical engineering. Nowadays, thermodynamics technology are using everywhere and they make our life more convenient. So, I want to do research how thermodynamics works and how they contribute to our daily life. 1.0 Introduction Boiling water is hot. Ice is cold. The diversity between hot and cold is detected naturally ability to sense heat and its opposite. We measure heat with a thermometer and we assign it a temperature. Dictionary definition of hot and cold relate those sensation to our normal body temperature. Warm things have temperatures above our body temperature, and cold things have temperatures below our body temperature. In this way, humans are able to compare the temperatures of things and get a subjective sense of hotness or coldness. In one sense heat is a sensation in the mind. But we know that some physical process is causing our nerves to be stimulated in this way. What is happening in nature that causes us to feel these sensation of hot and cold? It isnt only human beings who respond to heat flow and changes in temperature. Heat affects all material objects and the environment as well. Temperature determines whether most substances exist in a solid. Liquid. Or gaseous state, Heating and cooling, if it changes the temperature of a substance enough, can change the state of matter. SO basic is the phenomenon of temperature that physicist consider it a fundamental property of matter. Along with volume mass, electric charge, and time. The word thermodynamics consist of thermo, meaning heat, and dynamics, which refers to movement or change. In this broadest sense, thermodynamics is about heat and how heat moves and changes. The fact that heat move at all was itself a discovery of considerable importance. Its not at all obvious. You light a campfire and it warms you. It has heat. The fire goes out, and heat seems to disappear. Common experience will not tell you that none of that heat has really disappeared. Heat is a form of energy and energy can b neither created nor destroyed. That, as you will learn, is one of the most important of the laws of thermodynamics. Thermodynamics is really all about the study of thermal energy and how it behaves. Over time, Scientists and engineers learned that heat energy is related to work. The classic example is the steam engine, in which heat energy is used to boil water, creating steam to push a piston attached to a rotary shaft. The shaft can then be used to turn a train wheels or a ships propeller of the machines in a factory. In this process heat energy is converted into a mechanical energy, Understanding what heat and temperature are and how energy is transformed into different forms in essential to understanding the modern industrial world and how we get thing done. As we shall see, much of our theoretical understanding of thermodynamics did not come about until people could examine the functioning of real machines like the steam engine. 2.0 History of thermodynamics The ancient Greeks believe that the world is built up of four basic elements: water, air, earth, and fire. However they did not understand the true nature of heat, the ancient Greeks learned to use it to operate simple mechanical devices. Little is known of the life of Hero of Alexandria. He wrote treatises on working with the simple machines, like the lever, the pulley, the wedge, the wheel, the gear, and the screw. He described a primitive steam engine called an aeolipile. It consisted of a reservoir of boiling water connected by a tube to a large, hollow sphere with open, bent tubes coming out of it. The sphere was attached to a gimbal so that it could rotate. Heated steam entering the hollow sphere caused it to spin as it blew the steam out of the bent tubes. The aeolipile was the first device known to transform heat into ratery motion in effect, Heros device was the first steam turbine The history of thermodynamics started with G.Galilel(1597) who introduced the theory of temperature and he also invented one of the first thermometers. It was G. Black (1770) who was the first to use the term Thermodynamics. In 1772 G. Wilke introduced the unit of measuring the a mount of heat a Calorie. It was W. Tompson (1859) who introduced term thermodynamics into conventional use. In the 20th century, thermodynamics became a basic independent division of Theoretical Physics dealing with the study of general properties of physical systems under equilibrium, as well as common regularities taking place with attaining equilibrium. Thermodynamics is divided into phenomenological and statistical thermodynamics 3.0What is thermodynamics? Thermodynamics is a division of natural science related with heat, energy and work it defines macroscopic variables that show material and radiation and explains how they are related and by what law. Thermodynamics shows the average behavior of , large numbers of small divisions. 3.1Braches of thermodynamics 3.1.1 Classical Thermodynamics Classical thermodynamics shows the changes of thermodynamic in terms, either of their time-balanced equilibrium states, or else of their continually repeated like clockwork processes, but, formally, not both in the same account. It uses only time-balanced, or equilibrium, small quantities that can measure in the laboratory, counting as time-consistence a long-term time-average of a quantity, such as a flow, achieved by a continuously repetitive process. Classical thermodynamics does not accept change over time as a central circumstance in its account of processes. An equilibrium state stands constantly without change over time, while a continuously repeated cyclic process runs repeatedly without change over time. In the classical field closely and purely in terms of cyclic action, the best internal of the working body of a cyclic process is not considered; the working body thus does not have a characterized interior thermodynamic state of its own because no expectation is made that it should be in thermodynamic stability; only its inputs and outputs of energy as heat and work are considered. It is of course possible, and absolutely common, for the result in terms of equilibrium states of a system to show cycles composed of indefinitely many equilibrium states. 3.1.2 Statistical Thermodynamics Statistical Thermodynamics, also called statistical mechanics, appeared with the development of atomic and molecular approaches in the second half of the 19th century and early 20th century. It shows an explanation of classical thermodynamics. It considers the microscopic cooperation between individual particles and their combined motions, in terms of classical or of quantum mechanics. Its explanation is in terms of data that rest on the fact the system is built of several species of particles or collective motions, the branches of each species individually being in some sense all alike. 3.1.3Laws of Thermodynamics The laws of thermodynamics are different from others. Therere altogether four of them. Theyre arranged from zero to four. Not because they are arranged by discovery in order but because they are numbered some especially. The second law is different from others and therere no effect on others. It has different formulas. The first law describe the quantity of internal energy of a system, which was found from kinetic energy and from its potential energy which relates to its surroundings. The first law describe the transferring of heat between closed system as work. The second law include two theories which is known as temperature and entropy. Entropy shows the limit which is known as irreversibility from the beginning, on the work that can reach to an external system by thermodynamics process. The effects of temperature, which halfway showed by the zeroth law, which has quantities in the direction of energy flow as heat between two system in thermal connection and which is known as comm on sense of hot and cold 3.2.1.Zeroth Law If the object A is thermally equal with object B, and B is thermally equal with C. So, the object A is thermally equal with object C. This is more a matter of relationship than of physics. If they have the same temperature, the two objects are thermally equal. If object A and object B has the same temperature, and the object B and C have the same temperature, then both A object and B object have the same temperature. The most important thing in Zeroth Law is that, when a hot and cold object are place in contact together, the thermal energy will flow from hotter to the colder object until their thermal energy will remain equilibrium. 3.2.2.First Law Lets consider the first law as an isolated system. That means heat and energy can neither leave or enter the circle. Such system does not done any work. But we can imagine it with a certain energy inside it, namely U, which depends on the kinetic of the molecular system and also the systems temperature. The internal energy is the same with potential energy because it has a property that does not work. But it still has the potential to do work. The first law describes that the internal energy of the system increases if heat is added to a system. The first law can just show another way of the laws of conservation of energy. As heat and work are another form of energy, if they go outside of the system, it will affect the internal energy of the system 3.2.3.Second Law The Second law is popular for its formulation of entropy. Entropy is a technical term for talking about confusion which is found in the 19th century. The same theory let us know that heat energy automatically flow cold from hot and theyre not flowing in the opposite direction. This also remind us that if the ordered system can turn easily into disordered system, But disordered system cannot turn easily into the ordered system themselves easily. 3.2.4.Third Law The third law of thermodynamics states that if an object reaches the absolute zero absolute zero of temperature (-273C), its atoms will stop moving. 4.0How Thermodynamics Works? 4.0.1.Refrigerator The system of the refrigerator cycle is continuous. We will show the system of refrigerator which uses with pure ammonia which keep the refrigerator cool in the following example. Ammonia boils at -27 degrees F. Thats why the refrigerator can always keep cool. The compressor in refrigerator compresses the ammonia gas and they heats up as it reaches high pressure. At the back of the refrigerator, there are coils that make hot ammonia gas to take its heat. When it reaches high pressure, the ammonia gas become liquid as its pressure is high. The pressurized ammonia liquid let flow through the expansion valve. Theres a small hole within an expansion valve. One side of the hold let flow the high pressured ammonia liquid and other side let flow the low-pressure ammonia gas because the gas are sucked out of that side by compressor. The ammonia liquid boils as the boiling point is very low and it vaporizes. The gas temperature dropping to -27F and that makes the refrigerator cold inside. The cold ammonia gas sucked by the compressor and repeats the circle again and again. 4.0.2 Air Conditioner Therere some major parts of an air conditioner which freezes and cool the air in two directions: Indoors and outdoors: Evaporator, which works for the liquid refrigerant Condenser, which work for transferring heat Expansion valve, which make refrigerant into the evaporator Compressor, which pressurizes refrigerant For the cold side of an air conditioner, there is a fan which blows air over the freezed coil to cool down the air into the room and the evaporator. The compressor is in the hot side and also the condenser. Another fan is to release hot air coming off the compressed cool to the outdoors. Between those coils, theres an expansion valve which release into the evaporator the compressed liquid. If the liquid reaches into the evaporator, it experiences the pressure drop and change back into a gas. The compressor is a large device that pressurizes the refrigerant gas to turn back into a liquid, which is also known as electric pump. 4.0.3 Microwave Oven As it is a microwave oven, it simply uses microwave to warm up or cook food. Microwave is a kind of wave that stays between radio wave and infrared radiation. For the microwave system, the commonly used wave which has the frequency of about 2,450 megahertz. They have interesting effects. Water, fats and sugars absorbs such kind of waves. If theyre absorbed, they change them into atomic motion which transform into heat. These wave have another interesting effect too. They cannot be absorbed by most plastics or glass. 5.0Advantages of using Thermodynamics The devices as shown above each of them have Advantages. By using refrigerator we can keep perishable food, such as, vegetables and milk for much longer periods. Refrigerators also have a freezing part that will keep frozen foods and make ice to use in beverages By using Air Conditioner, its more comfortable and we can adjust the indoor temperature. In extreme heat, air- conditioning can be a life saver, improves the air quality and most air conditioner also reduce the humidity level, which helps both comfort. For Microwave oven, it can cook many food about 1/4th of the time necessary on a gas burner. It saves time in heating frozen foods. Food gets cooked uniformly. 6.0 Disadvantages of using Thermodynamics Thermodynamics not only have advantages but also have disadvantages. By using refrigerator it costs a lot of electricity to run. They are also environmentally unfriendly the refrigerator also contain refrigerant that can be damaging to the environment because of chlorofluorocarbon (CFC) content. This material is suspected to be the cause of reduction of earths ozone layer. When we frequently use the air conditioner, the air conditioning disease will occur. It is characterized by fatigue weakness, cough or fever and so on. Air conditioners energy consumption is considerable. It will consume a lot of energy. It also release CFC, which is environmentally unfriendly. Microwaves can cook food in very short period. Due to short period of cooking, food does not become brown unless the microwave has a browning unit. Sometimes unwanted chemicals migrate to food from plastic cook ware or food packages. The short cooking time may not give a chance of blending of flavours as in conventional methods. 7.0Recommendation As a result of the research carried out, it appears to be necessary to understand all the field of thermodynamics. Future technologies are requiring new materials with unusual effects that will either be prepared by high-temperature techniques. One of the important thing that can affect the pollution to the environment easily are the new devices. Equipment using volatile fluids that can harm to the stratosphere and destroy the ozone will have to be replaced. Devices that emit sulfur oxides will have to be modified to reduce sulfur emission to very low values. The ability of solar energy used devices will have to be improved and nuclear power plants will have to be designed to make less serious accidents. So that energy production by combustion to carbon dioxide is greatly reduced. 8.0 Conclusion The research report has taken information from various sources to understand what is thermodynamics; what are laws of thermodynamics; how they works; and how they make our life easier? It shows that thermodynamics used devices are very convenient to use. If there were no thermodynamics devices in this world it would be many difficulties to pass a day. By improving the uses and devices of thermodynamics, they can make our life more convenient and can reduce the environmental reduce the environmental side effects.

An Example of Successful Change Essay

Introduction Why is Wal-Mart so Successful? Is it Good Strategy or Good Strategy Implementation? In 1962, when Sam Walton opened the first Wal-Mart store in Rogers, Arkansas, no one could have ever predicted the enormous success this small-town merchant would have. Sam Walton’s talent for discount retailing not only made Wal-Mart the world’s largest retailer, but also the world’s number one retailer in sales. Sam Walton has made certain changes that help Wal-Mart to achieve its success today. His change techniques involve changing people, technology, and product. Indeed, Wal-Mart was named â€Å"Retailer of the Decade† by Discount Store News in 1989, and on several occasions has been included in Fortune’s list of the â€Å"10 most admired corporations.† Changing People Wal-Mart is successful not only because it makes sound strategic management decisions, but also for its innovative implementation of those strategic decisions. In order to become a superstore, Wal-Mart decided to change the skill level of its workforce. Walton’s greatest accomplishment was his ability to empower, enrich, and train his employees. He believed in listening to employees and challenging them to come up with ideas and suggestions to make the company better. At each of the Wal-Mart stores, signs are displayed which read, â€Å"Our People Make the Difference.† Associates regularly make suggestions for cutting costs through their â€Å"Yes We Can Sam† program. The sum of the savings generated by the associates actually paid for the construction of a new store in Texas. One of Wal-Mart’s goals was to provide its employees with the appropriate tools to do their jobs efficiently. The technology was not used as a means of replacing existing employees, but to provide them with a means to succeed in the retail market (Thompson and Strickland 93). Changing Product Wal-Mart stores operate according to their â€Å"Everyday Low Price† philosophy. They provide customers access to quality goods, to make these goods available when and where customers want them, to develop a cost structure that enables competitive pricing, and to build and maintain a reputation for absolute trustworthiness (Evan, Shulman, and Stalk, 55). Through Sam Walton’s â€Å"Buy America† policy, Wal-Mart encourages its buyers and merchandise managers to stock stores with American-made products. In a 1993 annual report management stated the â€Å"program demonstrates a long-standing Wal-Mart commitment to our customers that we will buy American-made products whenever we can if those products deliver the same quality and affordability as their foreign-made counterparts† (Thompson & Strickland 68). With a variety of product and low cost, Wal-Mart has attracted more consumers. Changing Technology Wal-Mart has invested heavily in its unique cross-docking inventory system. Cross docking has enabled Wal-Mart to achieve economies of scale which reduces its costs of sales. With this system, goods are continuously delivered to stores within 48 hours and often without having to inventory them. Lower prices also eliminate the expense of frequent sales promotions and sales are more predictable. Cross docking gives the individual managers more control at the store level. A company owned transportation system also assists Wal-Mart in shipping goods from warehouse to store in less than 48 hours. This allows Wal-Mart to replenish the shelves 4 times faster than its competition. Wal-Mart owns the largest and most sophisticated computer system in the private sector. It uses a massively parallel processor computer system to track stock and movement which keeps it abreast of fast changes in the market (Daugherty 24). Information related to sales and inventory is disseminated via its advanced satellite communications system. Conclusion Sam Walton, a leader with an innovative vision, started his own company and made it into the leader in discount retailing that it is today. Through his savvy, and sometimes unusual, business practices, he and his associates led the company forward for thirty years. Today the company is still growing steadily. Wal-Mart executives continue to rely on many of the traditional goals and philosophies that Sam’s legacy left behind, while simultaneously keeping one step ahead of the ever-changing technology and methods of today’s fast-paced business environment. The future also looks bright for Wal-Mart, especially if it is able to continue its customer-driven culture, it should remain a retail industry leader well into the next century.

What Every Body Is Saying About Thesis Statement Argumentative Essay Is Dead Wrong and Why

What Every Body Is Saying About Thesis Statement Argumentative Essay Is Dead Wrong and Why The Number One Question You Must Ask for Thesis Statement Argumentative Essay Keep revising your own idea till you get original and intriguing claims which you are excited to write about. A thesis produces a particular statement to the reader what you are going to be attempting to argue. The type of thesis statement included in the paper determines the standard of the paper. For instance, you can create a thesis statement that's associated with health. What Is So Fascinating About Thesis Statement Argumentative Essay? Once you're done writing, it's important to get someone take another look at your paper so that you're able to ensure there aren't any mistakes or errors. Choose from popular topics that folks are passionate about. The actual folks highly praise our essay help site. Helping students with explaining the feeling of an issue to the audience is the way it works. Whenever so meone finishes reading your conclusion, they ought to have zero question about what your stance is on the matter. Your thesis summarizes the argument you're going to be making in your paper, so you wish to be sure that your point of view is crystal clear and debatable. You would like your audience to don't have any doubt about your point. Always, you must be clear to the point. Deciding upon a sort of claim or argument can help you keep your thesis from becoming too wide. You want to demonstrate the importance of a particular side of a situation. You first have to select a good topic with an argument, credible information to strengthen your viewpoint, a good stance on your side, and a superb counter-argument that will help you sound less biased. When the topic was decided, it is crucial to come up with an argument surrounding the exact same. Your thesis statement has become the most important sentence in your essay. If you would like your thesis to be classified as a thesis and not only a useless sentence, utilize an extremely precise tone and specific words. A thesis is a one or two sentence overview of the principal function of the paper. It can be included at the start of the paper. In order to supply an in-depth understanding about the argumentative essay, it is advisable to take a look at some of the greatest examples of argumentative essay. Therefore, it's logical that for each specific sort of essay you ought to use your very own corresponding thesis creator. The essay should have a little bit of structure, unlike a normal essay. Bear in mind an argument essay ought to be somewhat persuasive. Consequently, students may develop different thesis for unique themes to compose essays on hamlet. On the flip side, students who write very good thesis discover that it's effortless to write excellent papers. Thesis Statement Argumentative Essay Writing quality essays is the principal purpose of our services. It is suggested to look for the one which has a great reputation and offers high-quality papers at inexpensive prices. Now you're acquainted much closer with statement generators of various kinds. Ally you must do is to correctly submit your order instructions and produce the payment. Luckily, there are a number of basic rules you may follow to make sure your thesis statement is effective and interesting. At any time you start to compose an essay, the very first paragraph of your piece ought to be your thesis statement. Since you may see, there isn't any universal thesis statement formula as every kind of a writing assignment needs a different strategy. Still, there are a few basic guidelines to bear in mind when it has to do with an argumentative thesis statement. Your strongest point needs to be revealed in the last body paragraph. You should make your argument as clear and specific as possible. Thus in the instance of all thesis statements, valid arguments should be present to support the principal point of the essay.

The Catcher in the Rye and the Truman Show Essay - 1588 Words

J.D Salinger explores many ideas of identity in his book ‘The Catcher in the Rye’; these ideas include ego, expression, personality, environment and perception. The author uses many features such as first person narration to express these ideas of identity. Identity is a common theme in many works including ‘The Truman Show’ directed by Peter Weir and poem ‘Life-Cycle’ written by Bruce Dawe. ‘The Catcher in the Rye’ is an emotional journey of 16 year old Holden Caulfield who is struggling to recognise his identity. Holden’s journey begins at Pencey Prep, one of three schools he attended and was expelled from. Holden then narrates as through the events following his expulsion from Pencey Prep and his eagerness to avoid his parent’s†¦show more content†¦For example, When Truman is driving to work, something that we, the audience, instantly recognised as a stage light fell from the sky, Truman, however accepted the radio’s explanation that it was part of an aeroplane in trouble, shredding parts. There are also various product placements throughout the show, that Truman himself even seems to find it unusual as when Meryl, his wife his describing a product, while looking directly into the camera Truman replies with â€Å"who are you talking to?† and when Truman attempts to find his way to Fiji he is never able to make it becau se there is always something in the way, this being so frequent does not strike Truman. Christof explains this saying â€Å"We accept the reality of the world with which we are presented.† Many of the cameras used in the movie are presented as they would if it was a legitimate TV show. Many scenes have blurred borders as if the camera is set in something, as the hidden cameras in the show would have been. An obvious example of these camera’s is the one seen when Truman is getting into his car, his neighbour is holding a bin with a small camera coming out of the side this contributes to the audience perception that this is a realistic television program. Holden Caulfield’s identity has been moulded by his environment, how he was raised the people he has met and the family he comes from. Holden comes from a family with four children and two wealthy parents who had built an image ofShow MoreRelatedThe Cinematic Features Displayed in Pleasantville and The Truman Show1733 Words   |  7 PagesThe Cinematic Features Displayed in Pleasantville and The Truman Show The following essay, which I have composed, is based on two important films of the last decade. Their titles are Pleasantville and The Truman Show. Starting with the Pleasantville, the general overview of the films plot gets more complicated the further you get into it. It brings up several issues all of which I have commented on in this essay. The film starts with two teenagers, David and JenniferRead MoreBelonging Essay4112 Words   |  17 PagesPrichard, Katherine Coonardoo AF Rhys, Jean The wide Sargasso sea AF Rosoff, Meg Just in case YA Rosoff, Meg What I was YA Rushdie, Salman The satanic verses AF Sachar, Louis Holes JF http://www.louissachar.com/HolesBook.htm Salinger, J. D. The catcher in the rye AF YA http://en.wikipedia.org/wiki/The_Catcher_in_the_Rye Sartre, Jean Paul Nausea AF Sebold, Alice The lovely bones AF http://en.wikipedia.org/wiki/The_Lovely_Bones Shields, Carol Unless AF Shriver, Lionel We need to talk about Kevin AF http://www