Thermoelectric generator

Plantation for providing the necessary infrastructure out this project successfully. I also thank Dry. S. Maryanne, Dean, School of Mechanical & Building Sciences for his support and continuously encouragement in completing the project. I express my genuine indebtedness to Mr.. C. Rammers Kumar, Senior Assai. Lecturer, School of Mechanical & Building Sciences whose whole hearted guidance and valuable suggestions throughout this project helped us in completing it successfully, without which the project would not have attained a fine and final shape.I would also like to express our gratitude to all faculty members of the school for their timely encouragement and thought provoking suggestion to pursue our work. Last but not he least, we would like to thank all those who were directly and indirectly helped us in completion of this project. CHAPTER: I 1. 0 Introduction Man's constant evolution couldn't have been possible without fuels. Society is putting more emphasis on the mobile transp ortation sector to achieve future goals of sustainability and on low thermal efficiencies of ICC engine.About 60% of heat-energy liberated during combustion of fuel is not utilized in producing useful work and getting dumped into the atmosphere daily. To achieve these goals, society needs to jump to a new method to recover the lost part of exhaust energy. The recovering of heat from exhaust gases in automobiles is a typical area of generating steam (or) electricity using W. H. R. B. * (or) Thermoelectric. It depends on the basic principle of ‘Speck Effect'.It would be useful to demonstrate the potential of thermoelectric generation in the automobile industry using Thermoelectric Generator (Tee's). A thermoelectric generator, which can be driven by the temperature difference, incorporates fins into a thermopile to conduct heat toward or away from the alternating spaces between adjacent layers of different types of thermoelectric material. Vehicles are becoming more electrified and the higher electrical demands under nearly all driving conditions are required.On board electrical energy management and storage systems are more prevalent. TEE'S provides source of additional electrical power without increasing fuel consumption. The study reveals that about 6% of the exhaust energy can be taped from the exhaust there by increasing the thermal efficiency. It can be used to increase the overall efficiency of the engine without increasing the fuel consumption and thus there would be a separate source of the electricity that a vehicle needs for keeping its battery charged and for erring all of its on-board electric circuits. W. H. R. B. = Waste heat recovery boiler 1. 1 Problem Specification To design and fabricate the Thermo Electric Generator and its various components. To test the TAG under various conditions when used on Marti 800 standing engine. 1. 2 Objective To design the TAG and its various components using Silkworms (CAD) designing software and to fabrica te the same using various manufacturing processes. Then the manufactured model is tested for efficiency , power output under various conditions when tested with Marti 800 standing engine.CHAPTER: II 2 Literature Survey 2. 1 Thermoelectric Principle The Thermoelectric principle though established for long back found application only to the field of sensor industry. But recent advances in materials, especially in semi conductors have paved way for applications to the field of power generation. This project studies the application of Thermo electrics as a waste heat recovery solution in vehicles and their potential for the future. 2. 2 Speck Effect The Speck effect is the conversion of temperature differences directly into electricity.This effect was first discovered, accidentally, by the German-Estonian physicist Thomas Johann Speck in 1821 . He found that a voltage existed between wow ends of a metal bar when a temperature difference AT existed in the bar. Fig. 1. 3 – Speck ef fect AS and SUB are the Speck coefficients of the metals A and B, and TTL and TO are the temperatures of the two Junctions. The Speck coefficients are non-linear, and depend on the conductors' absolute temperature, material, and molecular structure.If the Speck coefficients are effectively constant for the measured temperature range, the above formula can be approximated as: Thus, a thermocouple works by measuring the difference in potential caused by the dissimilar wires. It can be used to measure a temperature difference directly, or to assure an absolute temperature, by setting one end to a known temperature. Several thermocouples in series are called a thermopile. This is also the principle at work behind thermal diodes and thermoelectric generators (such as radioisotope thermoelectric generators or Arts) which are used for creating power from heat differentials. . 3 Semiconductor Based Thermoelectric Though the thermo-electric principle was established in the early 19th century , it was only after mid-20th Century advancements in semiconductor technology, however, that practical applications for thermoelectric devices became feasible. Semi- inducting materials, (in conjunction with copper inter-connecting pads), have been found to offer the best combination of Speck coefficient, electrical resistively, and thermal conductivity.Semi-conducting materials provide another benefit, the ability to use electrons or â€Å"holes† (the absence of an electron in a crystal matrix) to conduct current. This last property is useful in assembling many thermoelectric Junctions in series to reduce the overall current flow in the device to manageable levels. 2. 4 Thermoelectric Modules (TEEMS) Bismuth Telluride-based thermoelectric modules are designed primarily for cooling r combined cooling and heating applications where electrical power creates a temperature difference across the module.By using the modules â€Å"in reverse,† however, whereby a temperature d ifferential is applied across the faces of the module, it is possible to generate electrical power. Although power output and generation efficiency are presently low, useful power often may be obtained where a source of heat is available. 2. 5 Teems for Power Generation Thermoelectric (ET) energy conversion for power generation is based on the â€Å"Speck effect†, where a temperature difference, TTS-TTS, across two dissimilar legs of nonconductor material produces a voltage, Avocado.This voltage is equal to the Speck coefficient of the material, a, times the temperature difference across the device. The dissimilar legs of semiconductor material, one p-type and one n-type, are called a thermoelectric couple. The p- and n-legs are Joined by an electrically conducting material at the p-n Junction. A thermoelectric module consists of a series of p-n couples, which are connected electrically in series and thermally in parallel. Electrically insulating material separates the electr ical connectors from the heat source and sink.When a temperature gradient is applied across the couple, the negatively charged electrons, e-, in the n-leg and the positively charged holes, h+, in the p-leg move from the heat source to the heat sink, conducting heat to the cold base. This flow of electrons and holes causes separation in an initially uniform charge carrier distribution, which results in a current flow, l, in the couple. A thermoelectric module used for power generation has certain similarities to a conventional thermocouple. With no load, the open circuit voltage as measured between points a and b is: V = a.AT Where: V is the output voltage from the couple (generator) in volts a is the average Speck coefficient in volts/K AT is the temperature difference across the couple in K where When a load is connected to the thermoelectric couple the output voltage (V) drops as a result of internal generator resistance. The current through the load is: ‘load = (a . I is th e generator output current in amperes RCA is the average internal resistance of the thermoelectric couple in ohms the load resistance in ohms The total heat input to the couple (Sq) is: Sq The . L) – (0. 5. 12 . + (KC .CAT) Sq is the heat input in watts Kc is the thermal conductance of the couple in watts/K couple in K 2. 6 Module Selection The is the hot side of the The selection of the appropriate module for power generation with required voltage and current output was done on the basis of literature survey and was found that bismuth telluride module best suited to our condition because of its high efficiency and high operating temperature. Bismuth Telluride module was used because of its easy availability, low cost and low operating temperature range with a considerable efficiency.Material used for fabricating the outer frame is Cast Iron of 5 mm thickness, Cast Iron is used because of its cheap and easy availability. Outer Frame structure made on Solid Works Real time out er frame Full Assembly of the Chamber After the frame was manufactured, it was connected to the main setup as shown low, The setup included the catalytic converter attached to the Marti 800 engine. The inlet to the frame (TAG) is attached to the exit of the catalytic converter and the exit of the frame is to release the final exhaust gas to the atmosphere through a pipe.Here heat energy is converted into electric energy using thermoelectric module and therefore two plates are used in this experimental setup one is hot which is in direct contact with the exhaust gases flowing through the frame on one side and the other side of hot plate modules are placed and the other plate is cold plate which is assembled with cooling chamber as shown below, Hot plate used here is Aluminum of 5 mm thickness, one of which side is connected to frame exposed to exhaust gases directly.The picture below is the hot plate when modules are attached to it with the interface pads in between to increase the t hermal conductivity and to reduce the thermal resistance between the plate and the module. The cold plate which is assembled with cooling chamber is shown below, After connecting all this plates and module the entire frame structure is made to stand connected to the engine as shown above in one of the figure, and below shows he final completed set up with the exhaust pipe connected to the frame.

Script For Presentation

Script for presentation Introduce yourself and say what you are going to talk about How long the presentation will last and when questions can be asked Why this product? The new product I have designed for Catbird is called Caramel Bites. The reason have decided to create this product is because†¦ The results to my questionnaire showed that most people prefer Caramel as their chocolate filling which means that they are most likely going to buy the product.They also preferred milk chocolate over white or dark which is why the product is milk chocolate, this way the product is most likely going to make more sales if t is up to the customers liking. Most people preferred not to have more than one filling. They preferred just caramel Packaging Bite size, in a packet- people preferred them in a packet because they can be eaten bit by bit and last longer.Branding- It will be branded by Catbird as a confectionery snack Competitors Competitors are Galaxy and Mars. The reason for this is †¦ Galaxy have their product Minstrels and Mars and Maltese They are similar because they are both bite sized and in a small packet The product itself is different because they are a bite sized caramel snack which no other product has. Pricing app a packet Reasons for this price because.. Competitive price with similar products. E. G.Maltese Special offers- 2 for a pound which would introduce customers to the product Evidence of primary and secondary research primary- Questionnaires, asking people what they prefer Secondary- collecting data from the internet to see where the product fits in with its competitors in terms of Price and Brand. How does the price link to the target market? Target market is used to paying this price- it is the expected price place Where will the product be available? College shops and local stores, because according to my questionnaire..Most people purchase their chocolates from their local stores and shops inside college Primary research- Used when collected the information from my questionnaire. Secondary research- Going on the internet and finding out where my target audience purchases their chocolates from. Distribution channel The distribution channel used will be selling through retailers. (Producer- Retailer- Consumer) Where will the product be located? Front of the store: It is more convenient for new products to be at the front of the store Helps to promote it and they are more likely to catch the customers eye. How it fits the target market?Product is being sold where the target market shops for their chocolates. Promotion Where the product is promoted? Television, Magazines, Radio, Social Network. What sales promotions? Guy 1 get 1 free (BEFOG), Multi buy (3 for a pound). Primary research showed that the target audience will buy products from app-E, so if it was on promotion they would go for the offer. Secondary research is shown in other stores when promotional offers are on, therefore the consumer will buy them. H ow does it fit with target market? If a product is on promotion, e. G. Multi buy, the customer will go for the promotion because it is cheaper.Advertising the product Will be advertised on TV, Magazines, Social Network, Billboards, Transport (Buses) etc. Another form of advertising is word of mouth. When will you advertise? Drive times- morning (when people are driving to work, school etc) Evening- coming home from work. During popular n. † show breaks. Conclusion Product- Caramel Bites in a packet because most people preferred caramel filling and chocolates in packets. Price- app because it makes it competitive with other products that are already on the market. Place- Local store and college shops because this is where the target audience purchases their housecoats.Promotion- Buy 1 get 1 free and multi buys to increase interest in the new product. Why will it succeed? The product has been priced competitively Marketed/promoted properly to the right audience Sold in the most profitable places (local stores and college shops) It tastes good, so people will spread it from word of mouth. How would you grow the products market share? Expand the target audience (make it appropriate for other consumers). Such as- expanding the packaging (treat bag size and fun size) That's the end of my presentation, thank you for listening. If there are any questions please feel free to ask.

The Arab-Israeli Conflict Term Paper Example | Topics and Well Written Essays - 1250 words

The Arab-Israeli Conflict - Term Paper Example The main reason that triggered them to take this step was their hope to escapediscrimination and outright massacres against Jews in much of Europe. They considered different locations for the establishment of their new state and finally chose the historic Palestine in the Middle East as the Jews hold a religious belief that Palestine is the Promised Land for them.But the problem with their envisioned Jewish state of Palestine that the area was already a home land for around half a million Muslim and ChristianPalestinians. The modern Arab-Israeli conflict has originated since 1881. One has to have aproper understanding of present events in the Middle East and knowledge of the cultural, social, and economic, as well as political, background of these events (Andersen, Seibert, et. al).The most of the Palestinians at that time, almost 90% of the Arabs were Muslim while most of the rest were Christian (Tessler 43 and 124). Â  However, the religious differences are not the cause of the re al conflict. It is basically a struggle over land (Beinin&Hajjar). Theodor Herzl’s Zionist movement and the 1st International Zonist Congress of 1897 declared the establishment of Israel as a Jewish state in Palestine (Patai 2:581). After the defeat of Turkey in World War-I Palestine went under the control of Great Britain, which through the Balfour Declaration of 02 November, 1917 promised the Jews to create their National home in Palestine. During the World War II, the Jews suffered great atrocities in areas under the Nazi control and when the war came to an end and United Nations came into being, it was decided through resolution 181of 29 November, 1947 to partition Palestine into a Jewish and Muslim state. The Jews (comprise 30% of the total population at that time, and previously owning 6% of the land)were to be given 55% of, while Muslim and Christian Palestinians (the majority of the population)got 45% of the total land. The Palestinians’ input was not even take n into this biased conception and development of the partition plan at the UN (Sowers of Hope Factsheet No.5). Later on, when Jews overthrew the British mandate and declared the establishment of Israel on 14 May, 1948; the neighboring Arab states, Syria, Iraq, Transjordan, Lebanon and Egypt attacked it. The West bank came under the control of Jordan and the Gaza strip under the control of Egypt. On the other hand, the Jews snatched some more territory than being sanctioned to them in the UN partition plan of 1947. It was the beginning of the Arab-Israel conflict that caused over 700,000 Palestinians to flee to neighboring countries and become refugees. The UN resolution194 of December, 1948 called for a ceasefire which actually took place in the start of 1949 and the return of the refugees but Israel refused to allow the return of the refugees (Smith 1). In 1964’s Arab League annual summit, it was decided to create a unified organization as the sole representative of the Pale stinian people. It resulted in the origination of the Palestinian Liberation Organization (PLO). And Yasir Arafat, whose Fatah party was already merged with PLO was chosen as its president. In 1967, the efforts of Egypt, Syria and Jordan to settle scores with Israel resulted in a six days’ bloody war of 5 June, 1967. It resulted in the capturing of Gaza, Sinai Peninsula, Golan Heights, Jerusalem and the West Bank by Israel. UN resolution

Koran and 1001 Nights Research Paper Example | Topics and Well Written Essays - 250 words

Koran and 1001 Nights - Research Paper Example Her words and the words of the learned quizzing her reveal that the primary aim of Muslims is to achieve purity of body and spirit so that they will be worthy of meeting God. The book reflects the principles of the Koran in a thematic way through the various tales and the frame story. These stories reveal the principles of the Koran at work in the lives of the characters. The frame story of the Thousand and One Nights reflects the stories within the book in that each of the female characters are facing tests of their purity and their dedication and each time they demonstrate forgiveness, understanding and dedication. The male characters are often people with power, respected men who still manage to doubt, mess up or do wrong things. These men find the way back to purity, acceptance of Mohammed as prophet, dedication to the one true religion and renewed happiness and life. Evil men do not conform to these principles and suffer as a result of their willfulness. The frame story of a ruler who promises to take a new wife each evening and kill her each morning is reflected in these stories by allowing the ruler to see himself in each tale and his storyteller and latest wife, Shahrazad, in the roles of the female characters. As she gently instructs him in his religion, she is saving her own life and the lives of 1001 other of her countrywomen. She also pre sents the ruler with three healthy sons in this period and is finally rewarded with life and honor as the ruler’s

The obsession of medical science Essay Example | Topics and Well Written Essays - 1000 words

The obsession of medical science - Essay Example We have an obsession with scientific methods and we sometimes try to overcomplicate certain issues and pregnancies are one of these issues. This perception is ill founded and in this essay arguments will be given as to why midwives can be more helpful than Obstetricians in the American maternity health care system. What is the difference between Obstetricians and Midwives? An obstetrician is a person who is a medical expert in child births and labor issues. These are people who have taken formal professional education of medical science and have knowledge of surgery. Midwives on the other hand are only equipped with handling low risk pregnancies. Midwives deals with the process of child birth and aim at natural process of child birth. A midwife is generally expected to complete a few courses on pregnancy and child birth but they cannot treat child illnesses. The specifically deal with child birth and pregnancies. There is a difference in the child birth philosophy of midwives and obs tetricians. Midwives consider child birth as a natural process and they have a natural perspective on pregnancies. Obstetricians have a medical perspective and view child birth as a medical risk. Pros and Cons of Obstetricians The major benefit of obstetricians is that they receive formal professional education with regards to child birth and labor procedure. They are medical expert and are aware of the functions of other body parts. They have in-depth knowledge about the human body therefore they can perform complex child births. Obstetricians can also perform surgical procedures like a cesarean which midwives cannot. High risk pregnancies can be handled by an obstetrician and not a midwife. Sometimes the mother has heart problem or diabetes so such child births are better taken care of by obstetricians. The most significant disadvantage of obstetricians is that they have a medical science perspective that views child birth as a risk and not a natural process. Therefore they are mo re inclined to use surgical procedures when there is no need of it. There is also a shortage of obstetricians therefore they are not able to focus on one pregnancy and this can sometimes lead to complications. Marsden Wagner says â€Å"In USA obstetrician plates are full to overflowing† (pp.6). They are so busy that they find it hard to concentrate on a particular case. In this regard a midwife does better as she spends more time with the mother. Pros and Cons of Midwives Midwives provide services that are monetarily affordable by people. They charge far lesser than an obstetrician for their services and this makes them more attractive to gynecologists. The medical philosophy of midwives allows them to view child birth as a natural process and not as a medical risk. This allows them to think differently from obstetricians and they can rely on natural methods. They also give considerable time to their patients so this allows them to understand the patient in a better way. Midw ives can perform child births in homes. This is an added advantage as valuable time is not lost in bringing the patient to the hospital. The lack of medical knowledge serves as a disadvantage for midwives. Any complication during a child birth cannot be solved by midwives. They are also oblivious to the current trend of medicine and in case of an

Government intervention in the market for raisins Assignment

Government intervention in the market for raisins - Assignment Example Producers of specialty crops like raisin in California structured themselves into marketing associations. This essay paper will look into the broad subject relating with marketing orders, and narrow down into marketing order for raisins in the US. Discussion In 1949, following twenty years of ceaseless agitation, discouragement, bitter struggle, pools, forced combinations and raisin exchanges, raisin growers from California voted to come up with a federal marketing order based on the Agricultural Marketing Act of 1937. Critical components of this marketing order have brought a number of economic impacts, a program of price discrimination and a program of supply control. The Agriculture Secretary, in line with the provisions of the law, issues and carries out amendments on the same from time to time. Such orders are intended to regulate handling of specified agricultural commodities in line with the legal framework in place (Clary 23). A board that consists of growers and packers, cal led Raisin Administrative Committee (RAC) is bestowed with the mandate of watching over the marketing order. RAC is a federal marketing order which is led by packers, 47 growers and a public member. This authority is directly supervised by the United States Department of Agriculture which was established in 1949 due to the Agricultural Marketing Agreement Act of 1937. ... isin growers have brought complaint regarding Agricultural Marketing Agreement Act of 1937 which empowers government to confiscate some portion of the yearly raisin crop, the initiative which, for instance, saw 47% being confiscated in 2003 and 30% in 2004. Farmers who don’t cooperate in surrendering their raisins are penalized. The amount that should be surrendered to the government is based on the annual production volume and other factors like production by competing countries. Taxpayers are not left out in analysis of the potential effects of this surrender. The surrender minimizes the available share of raisin supply which in return causes the consumers of the product to buy it at higher prices. RAC does not pay any consideration to farmers upon expropriations. Actually much of the raisin is given away and others sold for export at low prices. It is only after it has covered its costs that the remaining profits, if any, are given to the farmers. Farmers who disregard this marketing order are fined. Raisin is not the only fruit that is federally regulated. In total, close to thirty products are subject to the ‘marketing orders’, overseeing of which is conducted by the Department of Agriculture. In other products like milk, the system of Federal Milk Marketing Order does set the lowest prices for milk and milk products. Farmers, if they were given an opportunity, would vote in abolishment of the marketing order rule. It is plain that the pronouncements of this rule have economically affected them. It is rational to produce more and reap more from the same but if the rule denies farmers of reaping what they have produced and unfairly handing the same to government, which is seen as wasteful decision (Agriculture.). On the other hand, farmers can still vote for

Who would you talk Essay Example | Topics and Well Written Essays - 500 words

Who would you talk - Essay Example Donald believes that success is always dependent on your personal qualities like having fair dealing, healthy relationships with associated people either customers, employees or competing businessmen and trustworthiness. I have learned a lesson from his principles that one must be passionate to do a certain job regardless of the mishap and troubles in the way to success. Business carries troubles and downfalls along with victory and fame. Only intellect, hard work, careful analysis of present business position and evaluation with planning of possible risks is important to sustain the current pace of business growth. I would love to interact with a person like Donald Trump as he believes that a person can come over all the difficulties in his way to success. His perceptions inspire me as they suggest a person to step forward and not to mourn, even over the most devastating loss. His life illustrates a number of incidents where he faced crisis but did not lose the hope to achieve his g oal. Hence it can be said that willpower plays a vital role in becoming a successful businessman.My personal opinion is that a person can change his views after having conversation with a successful, confident and independent person. For instance, if a person loses his confidence and his hopes he cannot do anything unless or until he sets a new aim and starts his struggle to achieve it. Hence, a successful person may grow the feelings of courage, hope, passion, confidence and competition in others. People may take his personality.