Gatsby Poetry Themes Flashcard

Gatsby Poetry Themes

Ecotourism in Hong Kong Essays

Ecotourism in Hong Kong Essays Ecotourism in Hong Kong Essay Ecotourism in Hong Kong Essay The image of Hong Kong is well known as â€Å"shopper’s paradise† and â€Å"Pearl of the Orient†. Further, according to the International Market Research Study, it shows that the lack of new appeals in Hong Kong is a significant reason for it not being considered as a vacation destination. Therefore, it is necessary to expand the appeals of Hong Kong. Why not use our existing natural resources as tourist attractions? To maintain the competitiveness, Hong Kong should build up its own unique and special character. Natural wonders of the territory provide a chance to show the uniqueness and international significance of Hong Kong ecology. Green tourism, outdoors, hiking and nature are some of the new and promising products most needed by consumers. Building ecotourism could attract special interest tourists. It was found that nature-based activities or scenery is one of the top attractions which the visitors to Hong Kong are interested in. These natural attractions include trips to outlying islands, nature reserves (Mai Po), beaches, mountain hiking, urban nature trails and dolphin-watching. Hong Kong’s remote, unpolluted outlying islands are an attraction for tourists. Many tourists are surprised that Hong Kong has dolphins in one of the world busiest harbors. In addition, a survey completed by the HKTA found that about 15% of tourists are interested in taking part in outdoor and hiking activities in Hong Kong. Since many overseas tourists are interested in seeing wildlife and beauty natural scenic, there is a potential market for ecotourism. About 70% of Hong Kong is rural area. Nature is right on the city’s doorstep. They are mostly accessible by buses and minibuses. Hiking, swimming, scubas-diving and sailing are all possible just a short journey from urban area. A total of 24 country parks have been designated for the purposes of nature conservation, countryside recreation and outdoor education. There are  22 special areas created mainly for the purpose of nature conservation. The country parks and special areas cover a total area of 44  239 hectares. The country parks comprise scenic hills, woodlands, reservoirs and coastline in all parts of Hong Kong. The country parks are very popular with all sectors of the community and spending a day in a country park is one of the best recreational choices. About 12. million visitors were recorded in 2012 and most visitors engaged in leisure walking, hiking, barbecuing and camping. Hong Kong has glory and outstanding scenic beauty, and also rich ecology. These are striking advantages for promoting ecotourism. Besides, Hong Kong is characterized by hilly topography with less low flat land areas. It consists of undeveloped and unspoiled steep hills, some 230 outlying islands and also other geographi cal and ecological features of high scenic and amenity value on Government lands with unrestricted public access and proximity to the urban areas. There is a wide variety of scenic views, landscape features and habitats including sandy beaches, rocky foreshores, mountain ranges, grasslands, valleys, shrub lands and so on. The sub-tropical climatic environment and extensive undeveloped tracts of natural landscapes provide a wide range of habitats, and supports high biodiversity of flora and fauna, both resident and migratory. There are about 500 species of birds, one-third of all species of birds in China. More than 230 species of butterflies and over 100 species of dragonflies can be found. There are more than 2600 species of vascular plants, 50 species of mammals, 80 species of reptiles and more than 20 species of amphibians in Hong Kong (AFCD 2013). A high proportion of birds in Hong Kong are winter visitors and passage migrants in spring and autumn, followed by resident birds and summer visitors. Migration is a strong instinct, and birds (particularly water birds) are often able to traverse immense natural barriers, frequently migrating and making one or more stopovers en route. In Hong Kong, we can watch butterflies in all seasons due to warm climate and the presence of a variety of habitats. There are over 230 butterfly species in Hong Kong and more than 130 species have been recorded in Hong Kong Wetland Park. The Butterfly Garden in the Hong Kong Wetland Park is planted with various larval food plants and nectar plants. It is an ideal place for learning butterflies. Dragonflies and damselflies are among the most beautiful and spectacular insects in the world. Their lives are closely intertwined with wetlands. Up to April 2009, there are 115 species of dragonfly officially recorded in Hong Kong. During the Dragonfly Festival, Hong Kong Wetland Park will organize a series of activities for public to broaden their knowledge of dragonflies. These activities also aimed to promote dragonflies watching and encourage the public to engage in the conservation works of wetlands and dragonflies. Our bustling metropolis has more than 40% of its land designated as protected green areas. Apart from providing habitats for our myriad wildlife, this verdant countryside is also home to world-class rock formations and geological features. A geopark is a unique natural area with special geological significance and natural and cultural landscapes, and can serve the three objectives of conservation, education and sustained development. The Marine Parks Ordinance protects and conserves the marine environment and a rich collection of aquatic animals and plants, such as corals, sea grasses and dolphins. In Hong Kong, there are 84 species of reef-building corals. Reef-building Corals in Hong Kong with the splendid colors and graceful growth forms and they also build homes for a wide range of marine animals. At present, there are four marine parks and one marine reserve, including Hoi Ha Wan Marine Park, Yan Chau Tong Marine Park, Sha Chau and Lung Kwu Chau Marine Park, Tung Ping Chau Marine Park and Cape DAguilar Marine Reserve. They cover a total area of 2 430 hectares and comprise scenic coastal areas, seascapes and important marine habitats. Marine parks and reserve can be managed for conservation, education, recreation and scientific studies. In marine parks, visitors are encouraged to appreciate the beauty and diversity of marine life. Diving, snorkeling, swimming, canoeing, sailing, underwater photography and school visits are popular activities in marine parks. Educational activities such as guided tours, beach clean-ups, seabed clean-ups and public lectures are regularly organized. Tourists can take part in them. To conclude, there is a great potential for the further development of ecotourism in Hong Kong since the territory is rich in ecology with outstanding natural beauty. Pure Ecotourism can include as one of the attractions in the trip to experience the green side of Hong Kong and to show the compact and variety of the territory. However, it is unsuitable to promote ecotourism without any development strategy. To ensure the ecological sustainability of nature and ecotourism, conversation should be in the first priority when developing ecotourism. For the sustainable development of ecotourism, it is important to let tourism industry, government, tourists and residents know what is the meaning of ecotourism.

Mobile devices Assignment Example | Topics and Well Written Essays - 750 words

Mobile devices - Assignment Example Mobile devices enable communication by facilitating the process within which information and data is shared within an organization. This includes the exchange of information and data between the management and employees. For example information about the operations of organizations is communicated to the management team so that it is used to reach strategic decisions on how efficiency and effectiveness can be achieved within the organization. The interaction between an organization with stakeholders within the external environment such as consumers, suppliers, distributors, retailers and shareholders is facilitated through the use of mobile devices and as a result increasing the effectiveness of an organization in meeting its goals and objectives. For example mobile devices are used to answer the queries of consumers and their problems and concerns which cause them to be satisfied with the products and services that are rendered by the organization. In this sense therefore mobile devices allow organizations to effectively meet their goals of achieving a larger share of the market and wining the loyalty of consumers through effective and efficient service delivery and presentation of high quality and authentic products to the market. More importantly the effectiveness of an organization’s supply and value chains is facilitates through the use of mobile devices as a communication strategy through which effective int eraction is achieved with the suppliers, distributors and retailers of the organization’s products. Furthermore mobile devices enhance interaction with marketers and as a result facilitate the effectiveness of promotion of the organization’s good and services to the market which leads to higher sales. This therefore defines an effective organization as facilitate by the role of mobile devices in promoting interactivity with the stakeholders of the

Dynamic Regression A Simulation Exercise Math Problem

Dynamic Regression A Simulation Exercise - Math Problem Example From the chart it is also the drop is also evident in the market and MOTOR returns and this shows that a drop in the market returns will also signify a drop in the returns of the stocks in the market. Finally from the chart it is evident that there was a decline in the market returns in 1987 showing that returns for the other stocks also declined. We use 120 0bservations to estimate the model estimate the model rjt = j + jrmt + Ujt for both stocks, we use MOTOR return data for the year 1976 to 1985, after estimation sung the TSM software the results show that rjt = 0.00255 + 0.7193 rmt the above model means that is we hold all factors constant and the market return level is equal to zero then the MOTOR stock return will be 0.00255, also if we hold all factors constant and we increase the market return level by one unit then the MOTOR stock return level will increase by 0.7193 units. ... The above model means that is we hold all factors constant and the market return level is equal to zero then the GPU stock return will be 0.00063, also if we hold all factors constant and we increase the market return level by one unit then the GPU stock return level will increase by 0.4297 units. The R squared for this model is 0.0854and this means that 8.54% of deviations in the dependent variable are explained by the independent variable. The correlation of determination R squared value for this model depicts a weak relationship between the explanatory variable and the dependent variable. Hypothesis testing: We test hypothesis for the estimated coefficients in the two models, MOTOR model: rjt = 0.00255 + 0.7193 rmt MOTOR model Constant: Null hypothesis: = 0 Alternative hypothesis 0 Standard error: 0.00737 Coefficient: 0.00255 T calculated = 0.00255 / 0.00737 = 0.34599 T critical at 95% level of test = 1.95996 When the T calculated value is less than the T critical value we accept the null hypothesis, in the above case therefore we accept the null hypothesis that = 0 and therefore the constant is not statistically significant at 95% level of test. Motor Model Slope: Null hypothesis: = 1 Alternative hypothesis: 1 Standard error: 0.12481 Coefficient: 0.7193 T calculated = 1- 0.7193/ 0.12481= 2.249 T critical at 95% level of test = 1.95996 When the T calculated value is greater than the T critical value we reject the null hypothesis, in the above case therefore we reject the null hypothesis that = 0 and therefore the constant is statistically significant at 95% level of test. GPU model: rjt = 0.00063 + 0.4297 rmt GPU model Constant: Null hypothesis: = 0 Alternative hypothesis 0 Standard error: 0.00841 Coefficient: 0.00063

World Geogrpahy Essay Example | Topics and Well Written Essays - 750 words

World Geogrpahy - Essay Example We begin by reading the testimony of a stampede that took place on Aug. 31, 2005 over a bridge over the Tigris River in Baghdad in which about 1,000 pilgrims lost their lives. Here we get to be introduced to Othman al-Obeidi, a Sunni who lost his life while trying to save Shi’ite from drowning in the river. Shi’ite consider him a martyr, some Sunnis too, while on the other hand a majority of Sunnis believe that he, â€Å"wasted his life for those animals† (Ghosh, p.1). The basic issue here is that there are mixed feelings between people on both ends. Some are friendly, while others have nothing but malice against each other. The origins of this fight began right after the death of Prophet Muhammad, with there being two groups of people; one who wished Muhammad’s Cousin Ali to be the Caliph, while others, the majority wanting Abu Bakr to become Caliph. After some years, a battle in the ground of Karbala took place in which the grandson of Muhammad, namely Hussein was martyred by Yazeed, the son of Muawiyah. Shi’ite mourns the death of Hussein each year on â€Å"Ashura† with â€Å"faithful march in the streets, beating their chests and crying in sorrow. The extremely devout flagellate themselves with swords and whips.† (Ghosh, p.2). Those who remained true to Muawiyah came to be known as Sunnis. Majority of Muslims across the world are Sunnis, but those who feel oppressed by their rulers are always attracted by the Shi’ite belief, which form a majority in countries like Iraq, Iran, Bahrain, Azerbaijan, Saudi Arabia, Lebanon and Pakistan. However, no matter how big the population be, it has generally been noted that Sunnis have remained politically in power in all the aforementioned countries (except Iran perhaps). Sunni leaders always upheld their domination by not including Shiites in the armed forces and bureaucracy. The

Design And Operation Of Engine Testing Facilty Engineering Essay

Design And Operation Of Engine Testing Facilty Engineering Essay ABSTRACT The report covers design and development of an engine testing facility for the operation of diesel and gasoline engines. It consists of two sub-cells for each engine type. It is designed by keeping Euro 5 emission standard in mind. A study was made to find the power output of the diesel engines of 1.3 lit. Turbo to 6.0 lit. Tdi and gasoline engine of 1.6 lit. With variable vane turbo charger and variable geometry valve timing. The Heat balance sheet for both the engine and the test cell was made on the basis of power output. afterwards, the mass flow rate of the fuel, air, cooling water and oil were calculated to design the test cell. The dynamometer and other equipments were selected based on their types and operation requirements. At the end the bill of material of all the parts purchased was prepared to illustrate that the designed testing facility meets the funds of the project. TABLE OF CONTENTS ABSTRACT Introduction 5 Test Cell Facilities Typical Test Cell Layout Thermodynamics of the test cell and flow measurement 7 Energy Balance 2.2.1Diesel Engine Energy Balance 2.2.2 Diesel Cell Energy Balance 2.3.1 Gasoline Engine Energy Balance 2.3.2 Gasoline Cell Energy Balance Test Cell Design Individual Test Cell Size Test Cell Design Cell Services Diesel Test Cell Layout Dynamometers Dynamometer mechanism Dynamometer Types Selection Of Dynamometer Instrument Selection 5.1Engine Speed 5.2 Temperature Measurement 5.3 Flow Rates Measurement 5.4 Pressure Transducers 5.5 Emission Equipment 5.6 Smoke Measurement 5.7 Prices of the Instruments Conclusion Reference CHAPTER 1 INTRODUCTION In the present scenario, internal combustion engines have become the most widespread form of energy conversion from chemical to mechanical form. A lot more is going on these days to improve the design of the engine using better materials and techniques in order to achieve more power and fuel economy. Considering the amount of effort that is being put to design an engine from scratch, the art of testing an engine is becoming much harder to master. The work of designing a test cell which should test engines with varied range of power output and size requires not only the skill and technical knowledge of the subject; it also requires the exposure to the new and developing experimental techniques to observe even the minute aspect of the project in order to design the best possible layout. The testing of an engine requires correctly measuring the parameters such as temperatures, air flow, fuel flow, air velocity and several meter readings in the first attempt itself as its an expensive ex ercise to conduct an engine test. [2] 1.1 TEST CELL AND FACILITIES To build a test cell requires a detailed study of the energy input and output with respect to the engine, size of the engine etc. So the proper plan has to be carried out. The test facility should be well equipped with the modern test equipments and instruments like gas analyser, transducers etc. Following topics discussed the facilities. 1.2 A Typical Test Cell Layout The following fig. shows a typical cell layout showing the different systems like ventilation for air, conditioning systems, data acquisition, cooling and air conditioning system etc.. Fig. 1.1 A typical Test cell layout CHAPTER 2 ENERGY BALANCE AND MEASUREMENT 2.1 ENERGY BALANCE With reference to the table and the figure, an energy balance of the 1.3 litres turbo engine (manufactured by FIAT), which produces a power of 95bhp @4000 rpm (equivalent to 70 KW) is carried out. The same procedure can be later followed to calculate the energy flows for the 6.0 litre Tdi V12 Volkswagen engine producing a power of 331 KW @6050 rpm 560 Nm of torque at 2750 rpm. 2.2.1 DIESEL ENGINE ENERGY BALANCE Engine: 1.3 litre turbocharged diesel engine, power output: 95 bhp(70.87 KW) Assuming thermal efficiency of the engine = 0.42, calorific value of diesel = 44.8 MJ/kg So, fuel input power = 70.87/0.42 = 168.73 KW Specific fuel consumption = Table 2.2 Energy Balance for the fiat 500 1.3 litre turbocharged 70.87 KW diesel engine Item Energy In Item Energy Out Fuel 168.73KW Power 70.87KW (42%) Heat to cooling water 33.746KW(20%) Heat to oil cooler 5.0619 KW (3%) Heat to exhaust 42.1825KW(25%) Conv. and Radiation 16.873KW(10%) Total 168.73 KW 168.73 KW Flow Rate Calculations: Mass flow rate of the fuel: = The density of diesel fuel is à Ã‚  = 0.832 Kg / lt So, the fuel flow rate is: = 16.0096 litres / hr. Air flow: : Assuming that the air-fuel ratio at full load is 25:1 and air density is 1.2 Kg /, = 333 Kg / hr. = 333.5/1.2 = 277.5 m3/hr. Cooling water flow : : Heat loss to the cooling water is assumed to be 20% Therefore, Heat loss = Assuming 10 degrees rise in the water temperature = 48.4392 kg/min Exhaust flow : = 346.32 Kg/hr Engine: Volkswagen 331 KW, 450 BHP engine The energy balance and mass flow rates for this engine was calculated by similar fashion as shown in the above case. Table 2.3 Energy Balance for the Volkswagen 331 KW,450 bhp engine: Item Energy In Item Energy Out Fuel 788.09KW Power 331 KW (42%) Heat to cooling water 157.6KW(20%) Heat to oil cooler 23.64 KW (3%) Heat to exhaust 197.02 KW (25%) Conv. and Radiation 78.809KW(10%) Total 788.09 KW 788.09 KW Table 2.4 Flow rates for the Volkswagen 331 KW engine: Particulars Mass flow rate Fuel 63.3286 kg/hr Air 1583.21 /hr Cooling Water 226.22 kg/min or lts/min Exhaust 1583 kg/hr 2.2.2 DIESEL CELL ENERGY BALANCE The energy balance for the diesel cell has been shown the table 2.5. Some of these calculations are being done in the ventilation system section. Table 2.5 Energy balance for the diesel test cell for 450 BHP diesel engine Item Energy In Item Energy Out Fuel 788.09 KW Exhaust Gas 150 KW Ventilation Fan Power 10 KW Dynamometer Power 373 KW Electrical Cell Services 25 KW Engine Cooling Water 157.6 KW Ventilation Air 150.868 KW Cell Wall Losses 5 KW Total 823.09 KW Total 823.09 KW 2.3.1 GASOLINE ENGINE ENERGY BALANCE This cell is required to test the engines from 1.6 litre variable vane turbocharger with variable valve timing to 3 litres 400 BHP engine. Engine: Toyota corolla 1.6 litre VVT, 110 [emailprotected] rpm, 150 [emailprotected] rpm The energy balance and flow rate calculations are same as that of the previous. Assuming 30 30-30-10 thumb rule. The calorific value of petrol is = 48000 KJ/kg. Table 2.6 Energy Balance for the Toyota corolla1.6 litre 80 KW petrol engine Item Energy In Item Energy Out Fuel 267KW Power 80 KW (30%) Heat to cooling water 80 KW (30%) Heat to exhaust 80 KW (30%) Conv. and Radiation 27 KW (10%) Total 267 KW 267 KW The 30-30-30-10 rule is used for the assumption that means assuming 30% thermal efficiency of the engine and the fuel power input has been calculated on this basis. Later, 30% heat loss is carried away by the engine cooling water and the exhaust of the engine. The 10% heat is lost to the surrounding air by convection and radiation. Following table represents the various flow rates for the engine assuming the air fuel ratio at full load to be 15:1 for the gasoline engines. Table 2.7 Flow rates for the Renault 1.6 litres VVT 80 KW engine Particulars Mass flow rate Fuel 20 kg/hr Air (A:F = 15:1) 250 /hr Cooling Water 115 kg/min or lts/min Exhaust 320 kg/hr Engine: A 3.0 litre 400 BHP (294 KW) gasoline engine Energy balance and flow rates have been calculated similarly as previous cases. Table 2.8 Energy Balance for the 3.0 litre 400 BHP petrol engine Item Energy In Item Energy Out Fuel 980KW Power 294 KW (30%) Heat to cooling water 294 KW (30%) Heat to exhaust 294 KW (30%) Conv. and Radiation 98 KW (10%) Total 980 KW 980 KW The values shown in the above table have been calculated assuming the 30-30-30-10 rule as discussed in the previous section and the table below shows the various flow rates for the gasoline engine. Table 2.9 Flow rates for the Renault 1.6 litres VVT 80 KW engine Particulars Mass flow rate Fuel 73.5 kg/hr Air (A:F = 15:1) 920 /hr Cooling Water 422 kg/min or lts/min Exhaust 1178 kg/hr 2.3.2 GASOLINE CELL ENERGY BALANCE: The table below represents the energy flows in and out of the cell when operating on full capacity of 400 BHP gasoline engine Table 2.10 Energy balance for the gasoline test cell for 400 BHP engine Item Energy In Item Energy Out Fuel 980 KW Exhaust Gas 274 KW Ventilation Fan Power 5 KW Dynamometer Power 250 KW Electrical Cell Services 25 KW Engine Cooling Water 294 KW Ventilation Air 187 KW Cell Wall Losses 5 KW Total 1010 KW Total 1010 KW The energy balance sheets for the diesel and gasoline engines lay a firm foundation for the design of the in-cell services and selection of the equipments that have been carried out in the later chapters. CHAPTER 3 3.2 TEST CELL DESIGN The test cells must be provided with the following services: Water supply and drainage system Fuel supply system Ventilation system Taking engine exhaust to exterior Fire and safety regulations Portable test stand for the engine and dynamometer Control room or console etc We have to keep the temperature maintained at the ambient, so we have to give importance to ventilation system also. General purpose engine test cell has been shown in fig. 3.1. A typical test cell layout that has been used for these types of engines has also been shown in the fig. 3.2. Such type of cells is usually built side by side with common control room. The engines are imported in the cell from the rear door whereas the operator could enter from the front door. A thick glass is mounted between the control room and the engine cells so the operator could have a look at the cells while sitting inside the control room. [1] Fig. 3.1 General arrangement inside an engine cell aligned against a wall and the control room on the other side of the engine. Fig. 3.2 A layout of the test facility with two cells having a common control room .. Fig. 3.1 and 3.2 shows the typical layout of a facility incorporated with two separate cells and a common control room with a thick glass window separating the cell and the control room. The cells are aligned with a wall which leads the exhaust outlet to the atmosphere. 3.3 CELL SERVICES 3.3.1 VENTILATION SYSTEM Ventilation system plays a very important role in any engine testing laboratory or testing cell. inside the cell due to running of heavy engine a high temperature is developed also at the surface of the engine . so it is necessary to carry away this heat ventilation system should be strong enough , also it is necessary to keep the surrounding temperature at ambient conditions. The convection and radiation losses are assumed as below (based on diesel engine): Engine 78.809 KW (10% as mentioned in heat balance) Exhaust Manifold 10 KW Exhaust tailpipe and silencer 10 KW Dynamometer 40 KW Electrical equipments 15 KW Forced draught fan 5 KW Subtotal 158.809 KW Total (assuming 95% efficiency of the ventilation system) 150.868KW Table 3.2 Heat losses to be considered for the ventilation system design For the total heat loss from engine by convection and radiation H = 150.868 KW, the volume flow rate of air can be calculated as: Taking H = 150.868 KW, C = 1.01 KJ/Kg-K, à Ã‚  = 1.2 kg/m3, and temp rise of 10, the mass flow rate is: 12.447 m3/sec. or 746.87 m3/min. the air flow velocity in the duct could be taken in between 15-20 m/sec. For this value, the cross-sectional area could be 0.37-0.49 m2. So, from a range of standard duct area, it could be taken as 600mm X 600mm ( square duct) as it results into the air flow velocity of 19.5m/sec (satisfies the range of 15-20 m/sec) and velocity pressure or dynamic pressure of 228 Pa. [3] from the above data centrifugal and axial fans were selected for the inlet and outlet respectively . typical ventilation system is as shown in the fig. Specification of the fan used in the ventilation system is as follows: Fan Air vol. (m3/hr) Speed (rpm) Power (KW) Centrifugal 920 2250 0.29 Axial 958 1680 0.21 Table 3.4 represents the specification of fans selected for ventilation 3.3.3 COOLING WATER SYSTEM Water is an almost ideal cooling fluid as it has a high specific heat value, low viscosity, relatively low corrosivity and is freely available (Martyr and Plint, 2007). The required flow rates can be calculated similarly to that of air if the heat to be transferred and the change in temperature is known. Additives such as ethylene glycol (antifreeze) can be added to the water to improve the operating temperature range of the cooling system and inhibit corrosion, although the specific heat value will be reduced. There are various types of cooling water circuits that can be considered like: Open water circuit, where the water is supplied directly from the mains and is therefore not circulated back. Closed water cooling circuits, where the water is supplied from a sump or tank and can be circulated back. This has an advantage that the coolant could me mixed in water sump to improve the cooling effect. Closed pump circuit 3.4 DIESEL TEST CELL LAYOUT C:UsersrohitDesktopdiesel cell layout.png Fig. 3.4 The diesel cell layout base on all the calculation done CHAPTER 4 DYNAMOMETERS Dynamometers are used inside the test cell to measure the torque which developed on the engine output shaft. It also measures the power output of the engine. 4.1 WORKING OF DYNAMOMETER Fig. 4.1 typical setup of dynamometer The dynamometer resists the rotation of the engine shaft to measure its torque. The rotor rotates inside the stator which as the name indicates is stationary. The rotor exerts torque on the stator and this balanced by the load cell. The toque is given by: T = F X B And so the power developed by the engine could be known as: P = 2à Ã¢â€š ¬NT KW If the engine speed (in rpm) is measured using tachometer, the power could be easily calculated using the above equation. 4.2 TYPES OF DYNAMOMETER : The dynamometer types which are in practice include: Hydraulic Dynamometer DC Dynamometer AC Dynamometer Eddy current Dynamometer Each one of the above mentioned dynamometers has different set of working principle. There are four quadrants in which a dynamometer can operate: rotating clockwise producing or absorbing torque and rotating counter clockwise producing or absorbing torque. Figure gives a diagrammatical layout of these four quadrants. Most water brakes can only operate in the first quadrant. Eddy current dynamometers can operate in the first two quadrants, while AC/DC dynamometers can be used in all four quadrants. Figure 3-13: Dynamometer operating quadrants (Martyr and Plint, 2007) 4.3 DYNAMOMETER SELECTION: Different types of dynamometer has been studied by considering the advantage and disadvantage of each type of dynamometer the AC dynamometer has been chosen as it can perform in all the four quadrants and has lower inertia than the DC dynamometers, which makes it less vulnerable to vibrations due to rotation of the shaft. Diesel Cell: As the cell has been designed to fit in the engine ranging from 75-500 BHP. The dynamometer selected for this cell is AC 500 1811. 373 kw manufactured by Mustang dynamometer . The specifications are listed in table 4.2: Horsepower Cooling Type Constant torque range(ft-lb) Max Torque (ft-lb) 500 Blower 2455 2455 Table 4.2 AC dynamometer selected for diesel cell Gasoline Cell: The gasoline cell has been designed in such a way that it will test the engine with a maximum of 400 BHP. The selected dynamometer was AC 400 HP dynamometer manufacture by Dyne systems and its specifications are listed in the table 4.3 Horsepower Constant Torque range (ft-lb) Constant HP range Max Torque (ft-lb) 400 1175 3525 1787.91 Table 4.3 AC dynamometer selected for the gasoline cell CHAPTER 5 SELECTION OF INSTRUMENTS 5.1 SHAFT SPEED MEASUREMENT Tachometer is used for the engine speed measurement the non contacting digital tachometer is used so that it will not affect on the speed of the shaft . following tachometer is selected Make: Check-line ltd, Model: ctd-1000hd, Non-contact type, Measuring rang : 1.00-99999 Rpm, Prize: 5.2 TEMPERATURE MEASUREMENT The inlet air, coolant inlet and outlet, exhaust and oil temperatures can be measured with thermocouples. Depending on the temperature to be measured, K and J type Thermocouples are the most common thermocouples available. J types operate in a smaller range, approximately to 150 °C while K types operate up to 1500 °C 5.3 FLOW RATE MEASUREMENTS a) Turbine-flow meter: Omega, model: FTB790 Series. It has an output range of 0-5V DC b) Fuel-flow meter: Fischer-Porter Digital fuel flow meter is selected c) Air-flow meter: Mass-air flow meter manufactured by Shijiazhuang Fortune Industrial Trading Co., Ltd. and FHC Ind, model: FHC-CMF I-DNXX Limited has been selected. temp range of -40 to 200. 5.4 PRESSURE TRANSDUCERS Omega high accuracy pressure transducer has been selected Model: PX01C1 -100G5T 5. Range: 0-400 bar, with 0 to 5 Vdc Output accuracy . 5 EMISSION EQUIPMENT The equipments used should be of euro 5 standards following chart shows the emission norms for euro 5 and euro 6 standards: EURO 5 EURO 6 PERTOL DIESEL PETROL DIESEL CO 1 0.5 1 0.5 THC 0.1 0.1 NMHC 0.068 0.068 NOX 0.06 0.18 0.06 0.08 HC+NOX 0.23 0.17 PM 0.005 0.005 0.005 0.005 Fig. 5.2 EURO 5 and EURO 6 emission standards Exhaust gas analyser: XM2000 5 -gas analyser Exhaust Measurement System provides a portable, low cost tool for continuous analysis of engine exhaust gas components (HC, CO, CO2, NO, O2) system. XM2000 -gas analyser manufactured by Dyne Systems Inc. 5.6 PRICE-LIST Items Price ( Reason for purchase Dynamometers 1,20,000 Power and Torque measurement Centrifugal Fans 500 Forced Draught Axial Fans 1800 Ventilation Exit Feet levelling for beds 700 Absorb vibrations 6 thermocouples 100 Temp. measurement 2 Infrared thermometers 280 Non-invasive temp. 2 Digital Tachometers 125 Engine Speed measurement 2 Data-Acquisition System 1,10,000 Record and transfer data to control room 2 Pressure Transducers 700 Cylinder Pressures All types of flow meters 10,000 Measure mass flow rates Gas Leak Detectors 400 To detect leaks Smoke Detectors 50 To detect fire 5-Gas Analyzers (2nos) 4,50,000 To check emission TOTAL COST 6,67,780  £ CHAPTER 6 CONCLUSION

post colonial :: essays research papers fc

George, Rosemary Marangoly, and Helen Scott. "An Interview with Tsitsi Dangarembga." Novel (Spring 1993):309-319. [This interview was conducted at the African Writers Festival, Brown Univ., Nov. 1991] Excerpt from Introduction: "Written when the author was twenty-five, Nervous Conditions put Dangarembga at the forefront of the younger generation of African writers producing literature in English today....Nervous Conditions highlights that which is often effaced in postcolonial African literature in English--the representation of young African girls and women as worthy subjects of literature....While the critical reception of this novel has focused mainly on the author's feminist agenda, in [this] interview...Dangarembga stresses that she has moved from a somewhat singular consideration of gender politics to an appreciation of the complexities of the politics of postcolonial subjecthood" (309). Full text also available from EBSCOHost Academic Search Elite, Article No. 9312270407. Veit-Wild, Flora. [Interview with Dangarembga] "Women Write about Things that Move Them." Matatu: Zeitschrift fur afrikanische Kultur und Gesellschaft 3.6(1989): 101-108. Wilkinson, Jane. "Tsitsi Dangarembga." Talking with African Writers: Interviews with African Poets, Playwrights and Novelists. London: James Currey, 1992. 189-198. Tsitsi Dangarembga (b. 1959) was interviewed 4 Sept. 1989 in London by Jane Wilkinson, and I here highlight some points made in that interview. There seem to be many autobiographical parallels between Tsitsi’s and Tambu’s lives, although Tambudzai (supposed to be 13 in 1968 in the novel) would be slightly older than Dangarembga (who was 9 in 1968). Dangarembga says that she wrote of "things I had observed and had had direct experience with," but "larger than any one person’s own tragedies†¦[with] a wider implication and origin and therefore were things that needed to be told" (190). One important theme in Nervous Conditions is that of remembering and forgetting—especially the danger of Tambu’s forgetting who she is, where she came from—as her brother Nhamo did. Dangarembga acknowledges this in the interview (191). "I personally do not have a fund of our cultural tradition or oral history to draw from, but I really did feel that if I am able to put down the little I know then it’s a start" (191). Nyasha, the author says, doesn’t have anything to forget, for she never knew, was never taught her culture and origins—and this forms "some great big gap inside her." "Tambudzai, on the other hand is quite valid in saying that she can’t forget because she has that kind of experience. Nyasha is so worried about forgetting because it’s not there for her to remember.