Tuesday, October 8, 2019
Atlantic Computer Pricing Strategy Essay Example | Topics and Well Written Essays - 500 words - 5
Atlantic Computer Pricing Strategy - Essay Example Jowers finds that pricing is significant where the market impact, profit results, or both, of price variations, is great, and where firms have considerable discretion over the prices charged. In many instances, pricing decisions are severely constrained and are sometimes relatively unimportant. Large purchasers of industrial goods, like Atlantic Computer, may specify prices at which they will buy, determine product specifications, and send specifications to suppliers for competitive bids. This, it will prevent the company from effective competition and can lead to decrease in sales. The alternative solutions are status-quo pricing, competition-based pricing, cost-plus pricing and value-in-use pricing. Analyzing these strategies, Jowers takes into account competitors reaction and market positioning of Atlantic Computer. He supposes that frother products price may not be a relevant factor. In some technical areas where products require much research and development and involve much uncertainty, a cost-plus scheme may be used. In other situations, sellers may be almost completely free to set prices, while in still others, they may only be able to decide whether or not to sell at a price. Thus, the proposed pricing strategies have a negative or neutral impact on PESA and its strategic position on the market. The main requirements for the product are minimal acquisition costs, minimal possession costs, and the possibility to process many information requests. Introduction of the PESA is a crucial step for Atlantic Computer to gain market share and attract more client s. The plan of action will involve analysis of sales force and their ability to introduce the PESA, customers purchasing power and analysis of the first sales. Buyers are concerned not only with price, in their purchases, but also with service, status, and image. Low price alone does not result in a transaction.
Monday, October 7, 2019
Complexity Theory Article Example | Topics and Well Written Essays - 750 words
Complexity Theory - Article Example The chaos approach involves consideration of an overall state of being within the organization, with the state of chaos facilitating the need for change in the business environment or becoming the desired state of an organization to bring about much needed change. Both approaches are considered within the healthcare setting, as well as in the global business expansion realm. Examples of the types of change required for each situation apply the different approaches of chaos and the continuum. Defining Complexity Theory Complexity theory is based on the principle that various processes within a business production unit are comprised of tasks, with varying levels or degrees of difficulty. Complex systems are fractal in nature, comprised of complex patterns with similarities, though they may possess varying degrees of complexity (Lindberg et al, 1998). Though Lindberg applies the theory to the healthcare industry, it can easily be adapted to nearly industry or organization with outputs o r processes of production. A comparison of patient management and organizational management is used to explain the theoryââ¬â¢s application to healthcare. The complication of treating interacting health care issues is compared to the challenge of administering healthcare in a cost effective manner. Views on Complexity Theory Early supporters of complexity theory explain the phenomenon as a mechanical process that follows a specific cause and effect pattern, such as in disease processes. However, opposing perspectives suggest that the processes are made up of a combination of complex activities and the combination of various facets is what makes a system complex. In such a view, healthcare is a complex system in itself, made up of challenges in addressing patient health issues, challenges in the administration of healthcare and challenges in preparing healthcare providers to care for an increasingly diverse population. It is the degree of challenge or difficulty in addressing each of these areas of the industry that drives innovation, or new ways of delivery within the system. The Continuum Approach Complexity is explained as existing on a continuum between chaos and stability. All complex systems go through change, which, at times, pushes those systems toward the brink of chaos and away from stability. This explanation is applicable to many industries and types of businesses struggling to find their way in a global environment. To do so often requires change, or adapting new ways of looking at the business environment. Often change disrupts the methods and current strategies used by an organization. However, when an organization faces change or develops a change strategy, a means of greater contribution from each member of the organization is created. In the more stable environment, there is less contribution, as everyone exists in more of a state of complacency. Complexity and Change If complexity theory relates to change, then it makes sense to assume tha t the more change is needed within the organization, the more complex the system becomes. Greater contributions from a variety of sources make the change process inherently more complex. In the health care setting, just as in any other business environment, some problems or issues do not require complexity. A patient having a mole removed expects little, in terms of the unknown. The procedure and results
Sunday, October 6, 2019
Reading notes Article Example | Topics and Well Written Essays - 250 words
Reading notes - Article Example For instance, doctors and lawyers do have diversified codes that suit their fields, but a professor from a business school tends to embrace the claim by Milton Friedman that maximization of profits is the major responsibility or intention of any business. The third outcome of learning is the revelation that there are clear-cut differences between medicine and practicing management. They argue that there is no professional body that is self-regulating and has the chance to monopolize anyoneââ¬â¢s entry into the profession. The verbatim phrase from the book is as below stated; More so, it has revealed that it is not necessary for leaders or individuals to have an MBA to be successful leaders in the society. A good example is Bill Gates who has several doodles without any formal training in the same field or related field. The sentence from the book in verbatim is: ââ¬Å"The value of the MBA is that one has successfully completed the rigorous and formal process of learning the critical and analytical thinking required of
Saturday, October 5, 2019
Assessment of Vital SIgns Essay Example | Topics and Well Written Essays - 500 words
Assessment of Vital SIgns - Essay Example After a brief interview, the patient reveals the cause of her short breath and explains she deliberately avoided the escalator on her way to the examination room and took a walk up the stairs (following the doctorsââ¬â¢ advice to exercise some more). I allow her approximately 15 minutes to calm down then provide her with a gown and leave the room for her to change after instructing her to remove all her dressing except the briefs and put on the gown so that the opening is on the rear. The examination room is quiet, warm and well lit. All the measurements are taken with the patient seated down (McPhee & Papadakis, 2011). Since the patient has been allowed over 10 minutes to calm down and has not eaten or drank anything hot or cold, smoked, chewed gum in the last 10 minutes, I proceed to assess her temperature. I place a digital thermometer under her tongue to take an oral temperature and wait for it to beep before withdrawing it. I then note the patientââ¬â¢s temperature as indicated by the thermometer, part of the body from where it is taken and the time it was taken (McPhee, Papadakis, & Rabow, 2012). To find the patientââ¬â¢s pulse, I use my fingers (without the thumb) to press against the bony part of the patientââ¬â¢s wrist. Pressing the artery between the fingers and the wrist bone assists me to feel the pulse. Care is taken not to press too hard. Upon finding a pulse, I use a timer to count the number of beats that occur in a minute (since the pulse appears irregular). I then write down the heart rate, the irregularities observed and the time the pulse is taken (Crouch & Meurier, 2011). I then go on to assess the respiration without informing my patient since her knowledge of an on-going respiration assessment may inevitably cause her to alter her respiration and hence lead to erroneous conclusions. I count the
Friday, October 4, 2019
Are patents good or bad for Economics Term Paper
Are patents good or bad for Economics - Term Paper Example ââ¬ËPatentââ¬â¢ is the rights approved by the government that is bestowed to the inventor or patentee for special use of the invention for a restricted time period in the country or region, subjected to the prevailing law of that country or region. The duration for protection is generally 14 to 20 years including possible extension of 7 years (Bardowell, ââ¬Å"Patent Systemâ⬠). The policy of patenting is an important part of the economy as it helps in the process of innovation and invention to the country. The paper aims to substantiate the importance of patents for an economy. For the society, the benefits are achieved when the invention moves into the public realm after a certain period of time after the invention. Also the invention is revealed to the society with the expectation that there will be improvement in the invention. The patentee holds no such intention of keeping it as a trade secret. The granting of patent may sometimes become risky for the government. The term for which duration of patents are restricted (20 years) is very elongated. For such approach, innovation or improvement on the invention might get hold for a long period of time. But granting patents always keep the government on the safe side with because they can control the innovation and invention, be it good or bad. The historical data shows that patents have always produced good results for the economy. In this section of the paper, an article from the magazine ââ¬Å"The Economistâ⬠has been cited and analyzed. The article named ââ¬ËThe good, the bad and the uglyââ¬â¢ has explained the traits of urge towards innovation in Britain. The objective of the article was to rate Britain as a knowledge based powerhouse among the world countries. The article establishes that for upgrading the economic growth, governments provide good reason to promote innovation. As patent is the heart of invention through innovation in the field of R&D, governments take initiatives in
Thursday, October 3, 2019
American TV comedy Essay Example for Free
American TV comedy Essay Sit-coms in television history have been one of the most important genres for expressing the values of the middle and lower classes in our society, not in order to make fun of them but to express the best of them in a softer way. For the general public today, the sit-com is like the pantomime was for the Victorians. British comedy still has a Victorian taste, but it is one that is only recognized and truly appreciated by the British, which makes the British sitcoms less universal, and it does also express a more localised British culture. In reality, the appeal of American sit-coms in relation to the British is clear. In the UK, the use of social class stereotypes is more intense; they rely on a more complex social background than the US. Although it is generally felt that UK culture is gradually becoming less defined by the stereotypes of social class, it is notable that in the last five years of television, many sit-coms in UK television continue to approach mainly social class issues, which have more to do with the working class than ever before. For example, in the last year there were two productions that clearly illustrate this point: Shameless and Little Britain, recent productions by Channel 4 and the BBC, used the stereotype of the English working class. In one way it is not a universal appeal, the cultural facts make these productions localised for the UK audience. Shameless was about a family living on benefits in a council flat in Manchester. The main theme was their struggle to survive every day life. The central characters are seven children who where abandoned by their mother and are now looked after largely by their older sister because the father is an irresponsible, but arguably charming, alcoholic living on benefits. Little Britain centred around two actors who created a series of sketches; different situations which portrayed many peculiar stereotypes in English society, from a shoplifting seventeen year old girl living in east London, to a disabled man in Birmingham on benefits who shamelessly uses his generous best friend to help him with the basic daily tasks, despite the fact that he is perfectly capable of doing these tasks himself. These cultural issues make British sit-coms funny to those who recognise the social types, but if it is to be shown to an American audience the essential part of the funny elements are lost, principally because it is not related to Americans in the same way it relates to the English. In American sit-coms the appeal is more universal; there are more general jokes and the use of class is less than in the UK. Sit-coms like Friends and Will and Grace have a more general approach and the dramatisation of social issues is almost nonexistent. The jokes are directly related to the actors. When Will from Will and Grace wants to make a joke he makes one, it is not his background and his social status which is the joke but what he says. In Friends, the audience can observe the same phenomenon. Joes jokes have more to do with himself, or other members of the cast, than about his new girlfriend or the fact that she is from a working class family. Situation comedy in Britain evolved from radio comedy which in turn had its roots in music hall and variety. American sit-com developed from radio soap opera, weekly drama series which were devised to attract audiences in order to sell products. The domestic setting predominated in both variations of the form. Many early American sit-coms were transferred from radio to television. 1 Radio comedy assumed a sit-com format to attract a broader audience and to encourage listeners to listen to the shows on a regular basis. Stopping to listen to a sit-com radio show at a certain time of the week became a habitual form of entertainment for many families. For the television industry, the formula was already developed by the radio and, like everything else which is successful, copying this form was inevitable. Most sit-coms fit into our reality principally because they try to use real people in realistic situations. The programmes only last half an hour and for a fixed number of episodes. In the basic sit-com, the location is the same and every episode is self-contained; it has an end (most of the time happy) in the thirty minute slot, which allows the narrative to flow at a different pace in different weeks. The stereotypical fashion of the characters and their social types provide the humour and the ideology of the sit-com. Sit-com cannot function without stereotypes. In a space as brief as a thirty-minute sit-com, immediacy is imperative, and for a character to be immediately funny that character must be a recognisable type; a representation or embodiment of a set of ideas or a manifestation of a clichi. 2 For the American sit-com, the stereotype has to have a more universal appeal, where in Britain these stereotypes are more easily recognized in our local society, and the male and female stereotype interacts with the surroundings, making it part of the actors character. However, audiences can notice a change in American sit-coms in the last five years. They are using a more straight-forward form in sit-coms like Will and Grace. In this show, there is a new use of gay stereotypes being very open but with a universal appeal. Will is a camp butch gay guy whereas his best friend is camp and feminine, perhaps the funniest of the two of them. In Gimme, Gimme, Gimme, there is the camp gay guy who interacts with an ugly and fat flatmate. But the jokes and situations in which they are involved do not have a universal appeal because their jokes exploit additional stereotypes in English society that make the programme incomprehensible for anyone other than the British. The use of such stereotypes promotes the illusion of community which can be recognized by an audience. Making fun of any strange behaviour which is not acceptable in society, one way or another, is part of the sit-com format. Situation comedy is seen as light entertainment. According to TV producers, its function is to attract funding and to catch the audience early in the evening, offering a laugh which temporarily gives them an escape from reality. In the early days of television they were seen more as a kind of family programme. Nowadays, this light form of entertainment appeals more to a middle class part of society where after a hard day of work individuals want to watch TV without stress. It is more a form of general entertainment than anything else. Such entertainments were deliberately escapist, in that they allowed audiences to briefly recapture the sense of community destroyed by industrialisation and urban expansion. 3 There are three possible locations in which a situation comedy takes place. The first is the home and it is generally based around a family situation. The second is the workplace and the situation that occurs as a result of interaction between characters in the work environment. The third area is less clearly defined but involves a group somehow connected in a situation outside that of the workplace. 4 Shameless uses the characters neighbourhood to plot the situations, where Friends uses a flat and a local cafi , in which the characters usually meet. The use of similar locations guarantees a more realistic experience for the viewer. For Shameless viewers, the association is automatically recognised by an English audience. However, for the American audience the association would not be clear. The English audience is used to the number of council areas around many of its cities where Americans are not. In Friends, the locations appeal to both nationalities; friends meeting in a coffee shop and living together can be recognized in either country in the same way. The connection with reality engages the public more and makes Friends a more universal and commercial program than Shameless, where the scenery can only be recognized by an English audience. Despite the fact that most English sit-coms use local stereotypes, some English sit-coms have been successfully translated to American television. The show Absolutely Fabulous was originally a successful show in the UK and became one of the rare examples of a show which was screened in America and achieved the same success as it did in Britain. The only problem was that before the series could go on view, the producers decided to change many of the jokes which, for the American audience, were considered to be too rude. Plans to show the series in the USA met with problems because it was regarded as too vulgar and too pro-drug, as were the scripts for an American remake submitted to ABC TV after Roseanne Barr acquired the rights. In the end, the first British series was screened in the USA in 1994 and met with success, winning two Emmys (televisions equivalent of the Oscar). It achieved a cult status in the USA, as it did in Australia. 5 What the American producer judged as too vulgar was only a representation of British society during the Thatcher era. Absolutely Fabulous is no more than a production which explores the 70s and 80s in the present context. In one way or another, it is a portrait of English feminism and a society where post-industrial Britain had strong capitalist roots. The past and the Thatcherite present are, at times, played off against each other to produce comedy and social comment while at other points they meld together in hilarious confusion. 6 The main characters spend most of their time shopping and drinking, where Edinas daughter is more linked to nature and late twentieth century values (the post-feminism era). She only drinks natural drinks and dresses with a feminist attitude. It is the clash of both present and past which makes the comedy. The exchange of values in the way that the mothers role, which is to look after her daughter, is inverted, and the confusion with the past by Edina and Patsy which transforms Absolutely Fabulous into an international sit-com. In conclusion, there is one answer for the question Why is the English sit-com not that universal? British TV productions have had some success exporting their productions. However, the answer rests with the cultural aspects of the programmes themselves. The English audience is more open to American productions due to the fact that they are more universal; the jokes, the plots, and the sceneries can be incorporated into any culture with no need of any adjustment. The British sit-coms usually explore a more local stereotype and surroundings which make the export of these productions almost impossible. The amount of cultural ideology, which makes them funny, cannot be translated in many cases. Productions like Friends and Will and Grace explore more the actors personalities and lives than their surroundings. The cultural aspects in many cases are nonexistent. When the shoplifter from Little Britain appears, the joke is often not what she says but her accent and the way she dresses. It is a clear association with somebody who lives in the east end of London the stereotype which makes it funny, the association of the audience with reality. For a Londoner, this association comes automatically because each viewer probably knows someone like that, or would have seen somebody or even heard such an accent before. This kind of aspect cannot be translated, and in the British sit-com these references play an integral part. American productions are more appealing to an international audience because they do not focus excessively on local cultural aspects. Bibliography: Coner, J.; Harvey. S. (1996) Television Times: A Reader. Arnold Geraghty, C.; Lusted, D. (1998) Television Studies Book. Arnold Goodwin, A.; Whannel, G. (1990) Understanding Television. Routledge Marris, P.; Thornham S. (1996) Media Studies A reader. Edinburgh University Press. Neale, S; Krutnik, F. (1990) Popular film and Television Comedy. Routledge Palmer, J. (1987) The Logic of the Absurd: On film and Television. BFI Books. Strinati, D.; Wagg, S. (1992) Come on Down? Popular Media Culture in Post -War Britain. Routledge 1 Goodwin, A.; Whannel, G. (1990) Understanding Television. Routledge P130 2 Corner, J.; Harvey, S. (1996) Television Times: A Reader. Arnold P111 3 Corner, J.; Harvey, S. (1996) Television Times: A Reader. Arnold P112 4 Goodwin, A.; Whannel, G. (1990) Understanding Television. Routledge P132 5 Geraghty, C.; Lusted, D. (1998) Television Studies Book. Arnold. P289 6 Geraghty, C.; Lusted, D. (1998) Television Studies Book. Arnold. P289
Wednesday, October 2, 2019
Effects of Air Flow and Heating on Temperature: Experiment
Effects of Air Flow and Heating on Temperature: Experiment OBJECTIVE: To study the Air Flow effect on Temperature changes. To study the Heating Effect on Temperature changes. To study the Effect of Air Flow and Heating on Temperature changes. INTRODUCTION: The purpose of this experiment is to investigate the effects of air flow or heating on temperature. An enclosed duct (Model LS17024) is used as assistance to complete our task. The reason of setting the entire component in enclosures is to prevent unnecessary problems during control design, air flow and effect of heating process. The enclosed duct is made up by several components which include fan, control panel, cooler section, observation door, condensing unit, and dry bulb thermocouple. Fan functions to provide air flow rate and there will be a controller installed on it in order to adjusting the spinning speed. Control panel was connected to that controller on fan as well as heater to control both variables air flow rate and the heating rate. Next, temperature is defining as one of the most important parameter because it represents the motion of particles. The air molecules gain more energy on average (move faster and bounce around more energetically) when the temperature increases as the result of high heating rate. In this experiment, the air flow and heating rate alter the temperature changes. Furthermore, heat transfer in three main ways: through radiation, conduction, and natural or forced convention. Heat transfer via radiation occurs through electromagnetic waves, an example being the sunââ¬â¢s energy reaching the earth with including emissivity and energy absorption. Besides that, heat can also be transferred through conduction between the inner surface and outer surface of an object. As long as it is conducted by heat energy, the heat will flow from hotter region to lower region. For example, there is only one end of iron rod being heated by candle, and sooner or later the other end of the rod will become warmer. This phenomenon is a common heat conduction example which explained the heat energy can transfer through particles in one object. Doesnââ¬â¢t like heat conduction, heat convection happened between particles in fluid and non-fluid. Just like we can feel the heat of the hot iron plate once we get near to it even no contact at all. It is because the parti cles in iron plate pass the heat energy to air molecules in surrounding and the air molecules carry out heat convection again from air molecules onto our sensor cells on our body. MATERIAL/APPARATUS: 1. An enclosed duct (Model LS17024) 2. Fan 3. Control panel 4. Cooler section 5. Observation door 6. Condensing unit 7. Dry bulb thermocouple EXPERIMENTAL PROCEDURE: Control State of the Duct The apparatus main power supply was switched on. The system was allowed to reach steady state whereby all readings on the instrument panel show no more changes. All the readings displayed on the digital meters were recorded in Table 1. Part A: Air Flow Effect on Temperature The axial fan was switched on. The frequency was set to 5.0Hz by adjusting the frequency inverter. The system was allowed to reach steady state whereby there were no more changes in duct temperature. All the readings displayed on the digital meters were recorded in Table 1. All the above steps were repeated with frequency of 30.0Hz. The readings were recorded down in the Table 1 for different air flow rates 5.0Hz and 30.0Hz by adjusting fan frequency. Part B: Heating Effect on Temperature The heater was switched on and the heating rate was set to 40.0à °C. The system was allowed to reach steady state whereby no observable changes in heater and duct temperature. All the readings displayed on the digital meters were recorded in Table 1. All the above steps were repeated with heating rate of 60.0à °C. The readings were recorded down in the Table 1 for different rates 40.0à °C and 60.0à °C. Part C: Effect of Air Flow and Heating on Temperature Heating rate of 31.0à °C and a fan rate of 5.0Hz, and another set with heating rate of 31.0à °C and fan rate of 30.0Hz were selected to study their combined effect. The system was allowed to reach steady state whereby no observable changes in the duct temperature. All the readings displayed on the digital meters were recorded in Table 1. RESULTS: DISCUSSION: The purpose of this experiment is to study the effects of heating and air flow on temperature. The more kinetic energy inside an object particles cause vigorous collision which indicates that more heat been transferred from it. For sure it gives rise in temperature. Temperature is a parameter to measure the amount of thermal energy in one object based on the kinetic action between the particles. Air is made up of molecules that are constantly in motion. Once air is being warmed up, the molecules will gain energy to increase its mobility. The molecules will then collide to each other to cause effective collision. A higher temperature indicates more thermal motion between particles. So as return, a decrease in temperature will slow the movement of particles down. Fan frequency and heating rate are two factors that will alter the temperature changes. The faster the air flow rate, the more readily the surface cools as air forming a boundary layer is replaced and the temperature measured in the area is maintained low. Heat transfer in three main ways: through radiation, conduction, and natural or forced convention. Heat transfer via radiation occurs through electromagnetic waves, an example being the sunââ¬â¢s energy reaching the earth with including emissivity and energy absorption. Besides that, heat can also be transferred through conduction between the inner surface and outer surface of an object. As long as it is conducted by heat energy, the heat will flow from hotter region to lower region. For example, there is only one end of iron rod being heated by candle, and sooner or later the other end of the rod will become warmer. This phenomenon is a common heat conduction example which explained the heat energy can transfer through particles in one object. Doesnââ¬â¢t like heat conduction, heat convection happened between particles in fluid and non-fluid. Just like we can feel the heat of the hot iron plate once we get near to it even no contact at all. It is because the particles in iron plate pass the heat energy to air molecules in surrounding and the air molecules carry out heat convection again from air molecules onto our sensor cells on our body. One of the criteria for heat transfer to occur is temperature difference. As we all know, the heat will only transfer from hotter region to cooler region. According to First Law of Thermodynamic, the heat energy transferred from cooler place to hotter place is impossible. For convection, the rate of heat loss depends on the speed of ambient air flow above the surface. There will be an insulating boundary layer of warm air forming against the surface as the object surface heats the air around it. Moving air will destroy the boundary layer, letting the new cold air in and replace the original hot air. That is why the duct temperature is getting lower as the fan frequency goes higher. There are two types of convective heat transfer which are forced convection and natural convection. Forced convection was happened when there is external force existed for example Fan is considered as external force since it provides air flow. Forced convection can transfer faster heat rate compared to nat ural convection due to the stronger air flow rate which speed up the moving air that carries the heat energy. Furthermore, the temperature increases slowly for natural convection because heat energy is transferred in natural condition. At the early state of experiment, heater and fan were switched off so that we can observe the initial reading of all temperature gauges. The duct, heater and surrounding / ambient temperature were noted as 30.0 Ãâ¹Ã
¡C, 30.0 Ãâ¹Ã
¡C and 30.0Ãâ¹Ã
¡C respectively. This set of data is the controlled set in this experiment. In part B experiment, the fan frequency was initially set to 5Hz. The results came out for duct, ambient and heater temperature were 29.9 Ãâ¹Ã
¡C, 29.9Ãâ¹Ã
¡C, 30.0 Ãâ¹Ã
¡C respectively. After this, we need to wait for the whole component to stabilize (cool down) before carry out next set of part A experiment. Next, the fan frequency was reset to 30Hz. The duct, ambient and heater temperature were recorded 29.8 Ãâ¹Ã
¡C, 29.9 Ãâ¹Ã
¡C and 30.0 Ãâ¹Ã
¡C respectively. From the result, we can conclude that the duct temperature is getting low as we increase the fan frequency. This is fan has create a force convection with disrupt all the insulating boundary layer and allow the new and cooler air to come into enclosing duct. For part B experiment, the heating rate was initially set to 40 Ãâ¹Ã
¡C. The duct and ambient temperature came out as 31.1 Ãâ¹Ã
¡C and 30.1 Ãâ¹Ã
¡C. After that we repeat the cooling down process as what we did in part B experiment for system stabilization, the heating rate was then reset to 60 Ãâ¹Ã
¡C. The duct and ambient temperature were recorded as 35.5 Ãâ¹Ã
¡C and 30.9 Ãâ¹Ã
¡C .The readings prove that the duct temperature had rose compared to last set experiment. This is because the particles in air gained greater kinetic energy and collides with each other faster, causing an increase in temperature. In part C experiment, both fan and heater were involved. In first trial (first condition), we had the combination of 5Hz fan frequency and 31.0 Ãâ¹Ã
¡C of heater temperature. The duct and ambient temperature came out as 31.0 Ãâ¹Ã
¡C and 30.6 Ãâ¹Ã
¡C. Again the system needed to be stabilized in order to get more accurate reading for next part. For second trial (second condition) we made the condition as 30Hz fan frequency and 31.0 Ãâ¹Ã
¡C of heater temperature together. The duct and ambient temperature were recorded as 30.9 Ãâ¹Ã
¡C and 30.6 Ãâ¹Ã
¡C. The data proves that the duct temperature in second trial is higher than that in first trial. This is because the air flow has again destroyed the insulating boundary layer and the heating rate canââ¬â¢t counter with intruding of new cold air. In conclusion, there is few precaution steps need to be taken throughout the whole experiment. Firstly, the temperature should be adjusted from low temperature reading to high temperature reading so that the remained heat wonââ¬â¢t affect the next coming set. Next, this experiment should be conducted in a closed room and located far away from heating or cooling system so that the temperature wonââ¬â¢t be easily affected. CONCLUSION: The objective of the experiment which is to study the effects of heating and air flow on temperature was successfully determined. Air flow rate and heating rate are the main factors that affect the temperature. In this experiment, heat transferred by using convection. Fan was acting as forced convection which alters the velocity of moving air to disrupt the insulating boundary layer to allow the cool air to replace the original warm air. When heater was switched on, air is heated and expands. The molecules in warm gained greater kinetic energy and collide with each other faster, causing an increase in temperature. REFERENCES: Convection. (n.d). Retrieved March 20, 2014 from http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/heatra.html Effects of Heat and Airflow inside an Enclosure. (n.d). Retrieved March 20, 2014 from http://www2.emersonprocess.com/siteadmincenter/PM%20DeltaV%20Documents/Whitepapers/WP_Heat_Airflow_Encl.pdf Jain,R. (n.d). Heat Transfer. Retrieved March 20, 2014 from http://www.budind.com/pdf/BasicsofEnclosureCoolingWhitePaper2.pdf
Subscribe to:
Posts (Atom)