Free Essays on Air Compressor Cycles

My PV diagram did not take the shape that I expected. The basic shape was what I expected, but where the 2nd stage starts I thought there would be more of a volume increase at V1 but there was in fact a slight decrease. Maybe this was because there was a slight time lapse before the computer recorded the reading. There were differences between the theoretical results and my observed readings. The efficiency is made worse if leaks occur past the valves or the piston. Ideally the processes between 1 and 4 and 2 to 3 are isothermal ie no temp change. It is hard to say if this was the case but from the graph it does seem to be overall. In reality the warm cylinder would cause a slight temperature rise over the induction from 4 to 1. The gas is restricted by the valves and they tend to move slightly so P1 was probably slightly less than P4. Altering the value of the polytropic index would have an effect on the compressor performance. IF n equalled 1 then it would be iso thermal so the higher the better as we want it to be polytropic, a slight increase in the polytropic index would increase the performance. Multi stage cooling would improve the efficiency of the compressor. If the air is cooled then it takes up less room which means less work is required to achieve the compression ratio. This would increase the overall efficiency of the compressor. The hazards that could effect compressor performance are several. Oil in air dieseling- If oil gets present in the air then an effect known as dieseling can occur where the temperature of the air after compression is sufficient to ignite the oil air mixture. Effects of water in the air. Water is always going to be present in air but blow down valves deal with this. If large amounts enetered the air though, from a leak etc. then this could cause locking of the plungers in the barrels and cause major damage to the compressor.... Free Essays on Air Compressor Cycles Free Essays on Air Compressor Cycles My PV diagram did not take the shape that I expected. The basic shape was what I expected, but where the 2nd stage starts I thought there would be more of a volume increase at V1 but there was in fact a slight decrease. Maybe this was because there was a slight time lapse before the computer recorded the reading. There were differences between the theoretical results and my observed readings. The efficiency is made worse if leaks occur past the valves or the piston. Ideally the processes between 1 and 4 and 2 to 3 are isothermal ie no temp change. It is hard to say if this was the case but from the graph it does seem to be overall. In reality the warm cylinder would cause a slight temperature rise over the induction from 4 to 1. The gas is restricted by the valves and they tend to move slightly so P1 was probably slightly less than P4. Altering the value of the polytropic index would have an effect on the compressor performance. IF n equalled 1 then it would be iso thermal so the higher the better as we want it to be polytropic, a slight increase in the polytropic index would increase the performance. Multi stage cooling would improve the efficiency of the compressor. If the air is cooled then it takes up less room which means less work is required to achieve the compression ratio. This would increase the overall efficiency of the compressor. The hazards that could effect compressor performance are several. Oil in air dieseling- If oil gets present in the air then an effect known as dieseling can occur where the temperature of the air after compression is sufficient to ignite the oil air mixture. Effects of water in the air. Water is always going to be present in air but blow down valves deal with this. If large amounts enetered the air though, from a leak etc. then this could cause locking of the plungers in the barrels and cause major damage to the compressor....

Liquid Sunshine-Beneficial Fad or Human Carcinogen Research Paper

Liquid Sunshine-Beneficial Fad or Human Carcinogen - Research Paper Example Investigations soon found the ill effects of long-term exposure to radium. The use of radium as therapeutic agent was discontinued, but the victims of this metal died painful deaths. In 1900s, radium became a treatment option for many illnesses of the day. However, its popularity as a promoter of health soon declined. This paper aims at recounting the rise and fall of radium as a therapeutic agent. Radium (atomic number 88) is a radioactive alkaline earth metal, belonging to the same group as calcium and barium (Radium, 2009). Its radioactive nature makes radium a luminescent metal that glows in the dark. Radium is a decay product of radioactive uranium 238. Nobel laureates Pierre and Marie Curie discovered this metal in 1898. Marie Curie received her second Nobel Price for Chemistry in 1911 for her work on radium and polonium (Pasachoff, 1996). Pierre Curie was the first scientist to advocate the medical uses of radium. Pierre exposed his arm to radium for many hours, which caused a burn that took many months to heal. He concluded that diseased cells may be destroyed by exposure to radioactivity and that radium could be a potential cure for cancer and skin diseases (Clark, 1997; Pasachoff, 1996). The results of Curies trailblazing research on effects of radium catapulted this element to instant fame. Radiation therapy with radium became a standard treatment for cancer, benign tumors, warts, and even facial hair (Clark, 1997). By early 1900s, radium laced water was advertised as a therapeutic agent for a host of other problems (Clark, 1997). This radium water was called liquid sunshine as it was considered a magic elixir for better health and longer life (Rosch, 2004). As radium was expensive, radon, a product of radium decay, was used often to manufacture radium water (Clark, 1997). Radium water was prescribed as germicida l, antibacterial, and antifungal to treat diseases such as diphtheria, malaria, typhoid, and liver diseases (Clark, 1997). Many

Gezi Park Protests in Turkey Essay Example | Topics and Well Written Essays - 1000 words

Gezi Park Protests in Turkey - Essay Example Therefore, the governments construction plan at Gezi Park was like the last straw that broke the people’s patience thus releasing all the pent up emotions they felt Although the protest started as a sit-in in the Gezi Park, the brutal force with which the government uses to evict the participant precipitated a widespread protest in other areas. The incident provided an opportunity for the people to express their anger not only about the treatment of those in Gezi Park, but in other spheres where the government had introduced controversial laws like not kissing in public, authoritarianism and curbs on alcohol. Consequently, the protests were not about these issues but about the government and its policies over the years. As the confrontation between the demonstrators and the people developed, the participant was bottling their anger, which had been growing over the years (Mullen & Cullinane) The reasons why the sit-in at Gezi Park erupted and became uncontrollable can be blamed on several factors chief of which being the brutal force used by the police force that t=had entered the park to end the sit-in. The first days of Taksim Gezi Protests before interruption by the police force was peaceful in the history of the protests. ... Of course this reflected the government’s attitude that had been going on for years where the people were not let to express themselves and any effort to express contrary opinion that was not in favor of the government was quashed with the most brutal force. The police could be seen by those watching from television at home attempting to burn the protestors’ tents down. Those that were watching from other places some of whom did not care about the devilment plan at Gezi Park were brought into the protest as they could relate to how the police treated the participants to other government injustices over the years. Effectively, police brutality stretched the extent of the political sphere of the protest that now included other areas apart from environmental concern (Ozcan 396). Further, the brutal force also made the protestors to shift from peaceful mode of expressing themselves to a violent one that involved Molotov cocktail since they now realized that force could only be mate by an equal force (Mullen  and  Cullinane). The Prime Minister’s rhetoric also acted as a catalyst to the protests given his stance and attitude towards the protestors. From the beginning of the protests, the prime minister viewed the protests as a coup against him in addition to the pejorative rhetoric to the protestors in his reference to them as looters. Instead of making efforts to appease the protestors by taking steps that would be viewed as increasing the people’s democratic space, through establishment of channels of communication, he blatantly criticized the protestors as serving the interests of foreign powers and international investors. Additionally, instead of moving to appease the environmentalists, the prime minister emphasized on the environmental conservation

Huckleberry Finn Analysis Essay Example for Free

Huckleberry Finn Analysis Essay Mark Twain’s The Adventures of Huckleberry Finn has been regarded as one of the greatest novels in American regionalism. So many Americans have read it, and many have enjoyed it and many believe that it is worthy of the highest praise, and deserves to be included in the canon of Great American literature. As a piece of regionalist literature, the novel shines out amongst other novels. Twain vividly describes the Mississippi river and surrounding area of Missouri with detail unrivaled. His characters’ dialogue accurately depicts the dialogue of the area, and their attitudes, especially towards African Americans, are also historically accurate. However, as Huck and Jim move farther south down the river, Twain loses touch with his style of writing. The regionalist aspect suddenly crumbles, and his plot line gets outrageously unbelievable. The Adventures of Huckleberry Finn is not deserving of inclusion in the canon of Great American literature. As Jane Smiley said in her essay Say It Ain’t So, Huck, â€Å"There is more to be learned about the American character from its canonization than through its canonization(Smiley 61). If Twain had kept the story line in his territory of familiarity the outcome may be different, but as his setting moves south, his writing moves right along with it. To clearly see how Twain’s writing deteriorates as the novel progresses one must compare quotes from when the novel is set in Missouri to when the novel is set farther south. Here is a quote from the beginning of the novel, describing the area around Jackson Island, â€Å"†¦but mostly it was big trees all about, and gloomy in there amongst them. There was freckled Boyer 2 freckled places on the ground where the light sifted down through the leaves, and the freckled places swapped about a little, showing there was a little breeze up there†(Twain, 51). The way he describes nature in this excerpt shows his true talent. The personification of the ground and the light, giving it the human-like characteristics of freckles gives the passage a personal touch. His diction and prose make the reader feel like they are watching the golden beams of light dance before their eyes. This is why Mark Twain and The Adventures of Huckleberry Finn are recognized across America. However, in Chapter 31, when Jim ends up on the Phelps’ plantation, and the Phelps end up being Tom Sawyer’s family, and the Phelps mistake Huck for Tom and Tom for Sid, Twain is really pushing the believability of his novel, and from this excerpt we can see that the beauty of his prose is gone, as though he’s lost touch with the regionalist touch that makes his writing great, â€Å"‘Phelps’s was one of these little one-horse cotton plantations, and they all look alike. A rail fence round a two-acre yard; a stile made out of logs sawed off and up-ended in steps, like barrels of different length†¦(Twain, 273)† and on and on about the buildings of the plantation. There is nothing here that even remotely sounds like it came from someone who knows the area. Twain even says, â€Å"†¦and they all look alike† in the passage. He really lost his essence and creativity. He wrote out of his sphere of knowledge, and his novel suffers for it. The Adventures of Huckleberry Finn by Mark Twain is a wonderful piece of literature. Twain captures the true essence of being a teenage boy on a big adventure on the lazy Mississippi river. However, the end of his novel switches settings from Missouri, to further south, on a plantation coincidentally owned by Tow Sawyer’s family, and the reader can clearly see that Twain was out of his element, and he lost the wonderful sense of regionalism that made his Boyer 3 his works, and his era, influential in American literature, mainly because he wasn’t writing about the region he knew, grew up in, and loved. This is why Mark Twain’s The Adventures of Huckleberry Finn is not deserving of inclusion into the great canon of American literature.

evolution of the horse Essay -- essays papers

evolution of the horse ï » ¿For many people, the horse family remains the classic example of evolution. As more and more horse fossils have been found, some ideas about horse evolution have changed, but the horse family remains a good example of evolution. In fact, we now have enough fossils of enough species in enough genera to examine details of evolutionary change. Evolution does not occur in a straight line toward a goal, like a ladder; rather, evolution is like a branching bush, with no predetermined goal. Horse species were constantly branching off the evolutionary tree and evolving along various unrelated routes. There’s no discernable straight line of horse evolution. Many horse species were usually present at the same time, with various numbers of toes, and adapted to various diets. In other words, horse evolution had no inherent direction. We only have the impression of straight line evolution because only one genus happens to still be alive, which deceives some people into thinking that the one genus was somehow the target of all the evolution. Instead, that one genus is merely the last surviving branch of a once mighty and sprawling bush. Tracing a line of descent from Hyracotherium to Equus reveals several apparent trends: reduction of toe number, increase in size of cheek teeth, lengthening of the face, and increase in body size. But these trends are not seen in all of the horse lines. On the whole, horses got larger, bu...

BLENZ Coffee case study Essay

BLENZ Company Profile BLENZ Coffee is a Canadian chain of franchise coffee shops. BLENZ was founded in Vancouver in 1992, and has grown to over 82 franchises in six countries. Presently the majority of locations are located in British Columbia, with 35 international stores in the United Arab Emirates, Kuwait, the Philippines, China and Japan. BLENZ is primarily a coffee shop, but also serves a variety of hot and cold beverages, desserts, and assorted food items such as wraps and sandwiches. BLENZ SWOT Analysis Strengths: Extensive beverage menu Large food and dessert selection compared to competition Free Internet at 41 coffee house locations Talented baristas (coffee-maker, waiters) Quality coffee bean and teas Canadian-ownership Innovative beverage development Large coffee houses Alternative to brand leader Consistency Weaknesses: No clear brand direction No clear values or mission Mixed messaging, too many claims Contradictory aspirations No consistent communication tone, language, manner No consistent communication imagery, typography, design Less consistency across outlets compared to competitors Less focused on experience Unknown company history and background Franchisee-operated Opportunities: Showcase largest menu of most coffee houses Increase awareness of frequent innovative drinks Emphasize talented and award-winning baristas Canadian owned and operated (started in Vancouver) Alternative to global coffee house chains, something different Consistent experience of a chain, with the atmosphere of a local cafe A lot of action at coffee houses Threats Competition from better-known coffee houses Coffee houses with better locations Competing coffee houses companies with higher quality products Competing coffee houses companies with higher perceived quality Competing coffee house companies with higher perceived status Independent coffee houses Chain coffee houses Inexpensive coffee houses Instant coffee or complimentary coffee at work or businesses Cafes with larger menu selection Status in middle ground between brand leader and independent cafes People making coffee and beverages at home There are many reasons for BLENZ Coffee’s success so far; and this comes from their will to have convenient locations for the Customer. Moreover, their products are of the highest quality and their service continues to bring people back. BLENZ’s History BLENZ COFFEE opened its first store in February 1992 on the corner of Robson and Bute Street in Vancouver, British Columbia. The first BLENZ store was to  be a testing ground to ensure that the concept and systems were strong enough to grow and compete with other international chains. The founders of BLENZ COFFEE are Brian Noble, Sarah Moen and Geoffrey Hair, each bringing his own personal strengths and combined bringing a wealth of business experience to BLENZ COFFEE. The success of BLENZ COFFEE’S first store and the founders’ commitment to education and standards made franchising a natural choice. Today BLENZ now has 61 stores in British Columbia and also operates internationally in Japan and the Philippines. BLENZ’s Philosophy BLENZ COFFEE is a premium retailer of hand-crafted coffees, whole leaf teas, Belgian hot chocolate and other innovative and delicious specialty beverages. From the start, the founders of BLENZ COFFEE have always had a passion for quality. This passion is reflected in our commitment to using only authentic, premium ingredients in their beverages. All BLENZ beverages are made in-store from only the highest quality ingredients available. It is this commitment to serving quality beverages, prepared with care and attention by their highly trained baristas, in a warm and contemporary environment that has fuelled BLENZ COFFEE’S growth from its inception. BLENZ’s Products BLENZ COFFEE are retailers of high quality whole bean coffees, beautiful whole leaf organic teas and premium Belgian chocolate beverages to name but just a few of their product offerings. They are known as experts at authentic preparation methods and handmade beverages. They are not just purveyors of exciting and innovative beverages; they also offer a fabulous selection of baked goods, breakfast, lunch and snacks, among other delicious treats to tempt Customers. BLENZ: How to feel concerned by future They are aware of this fact which is that today’s world could not be more uncertain. Unemployment continues to rise; the stock market continues to fall. BLENZ take control of the future of unemployed valuable people, with their career opportunities. BLENZ: How to feel concerned by Canadian’s lifestyle Even in the face of economic uncertainty, consumers still demand their favourite affordable luxuries like premium coffee and tea. Canada’s coffee market is a $3 Billion Dollar industry. Coffee is still the most popular beverage in Canada – and second only to water, of all beverages consumed among adults 25 and older. And quality teas, are also rapidly gaining in popularity. BLENZ premium coffees and teas are second to none. They give people their chance to seize the opportunity to enjoy their lifestyle and profits with a successful BLENZ COFFEE franchise. BLENZ: How to combine Career Opportunities and Safety Fulfil your long held dream to own your own business, and really be the Boss – without all the trial and error that goes into a new business venture. BLENZ helps you manage the risks and become a leader in your local business community. BLENZ COFFEE shops are known as fun, and fast paced social environments. They’re also a secure training ground for children to gain self-reliance and pride as young entrepreneurs. BLENZ: The will of being everywhere BLENZ has opportunities in both established and new markets they are making available for the first time. You can develop one store. Or you may wish to be considered for an Area Development opportunity to open several stores in a Territory. Typical stores costs range from $225,000 to $400,000, depending on store size. BLENZ: Festival & Events partner Vancouver Film Festival Fringe Festival BLENZ & Harbour Cruises BLENZ & The Beat 94.5FM Matcha Photo Contest

A Literature Review On Motivations And Types Of Slips Of...

A Literature Review on Motivations and Types of Slips of the Tongue in Adults’ Speech Language production is a cognitive process we achieve easily and rapidly, but which is extremely complex (Goldstein, 2008: 381). â€Å"Our creative linguistic abilities reflect our tacit or implicit knowledge of the structure of our language† (Chomsky, 1986). â€Å"Our spontaneous speech is far from being perfect. Rather, it is interspersed with irregularities and errors of various kinds. Speakers may begin an utterance but never bring it to an end—at least not to the end they originally intended—because, while speaking, they realize that what they were going to say is inadequate, imprecise, or simply wrong.† (Pfau, 2009: 1). As normal humans, we usually express our thoughts, feelings, and ideas through the procedure of speech production. And while frequently sending and conveying our ideas, we might produce some unwanted and wrong utterances in our daily speech. Linguists believe that most of our daily utterances are frequently deformed by spontaneous spe ech errors or slips of the tongue (Pfau, 2009: 1). In linguistics, slips of the tongue is one of everyday frequent and spontaneous speech errors. Generally, slips of the tongue, in particular, are unintentional and distorted outputs during the process of speech production. Thus, these slips are not intentional and can’t represent our true feelings and desires. However, Sigmund Freud argues that slips of the tongue â€Å"have a meaning and can beShow MoreRelatedUse Of Traditional Chinese Medicine During The Treatment Of Schizophrenia Essay7976 Words   |  32 Pagesunderstandable may be common. Recently, some psychotherapists have begun to use a classification of schizophrenia based on two main types. People with Type I, or positive schizophrenia, have a rapid (acute) onset of symptoms and tend to respond well to drugs. 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