Ireland Social Housing History and Evolution

Ireland Social Housing History and Evolution I. List of tables and Figures Table 1 Number of Private Families in Occupation of Tenements of One-Room (1911-1936) Table 2 Characteristics of Tenure among Irish Households Table 3 List of The top 10 AHBs by size Table 4 Vacancy rate by type and region in 2011 Table 5 2015-2017 Residential units minimum requirement Table 6 Additional HAP and RAS Units (2015-2020) Figure 1 Provision of Local Authority Housing 2007-2014 Figure 2 Breakdown of Social Housing Support in Ireland (Number of Units) Figure 3 House completions II. Abbreviations RAS Rental Accommodation scheme HAP Housing Assistance Payment AHBs Approved Housing Bodies CAS Capital Assistance Scheme PAA Payment and Availability Agreement CALF The Capital Advanced Lending Facility NESDO National Economic Social Development office The development of the Irish housing system from the iconic period of the 1840s to the 1970s, when a new era of development began in Ireland, laid the foundations for the system today. (CHAPTER 2. 2011, p.54). This literature review outlines the evolution of social housing in Ireland from the beginning to the present day. It comprises of seven parts. Part 1 provides a brief history of tenements in Dublin; Slum clearance and Dublins corporation housing schemes; ownership. Part 2 examines the Social housing providers in Ireland. Part 3 Funding for social housing. Part 5 analyzes Social housing Supply and Demand; Part 6 is about Social Housing Need; Part 7 describes what the sources of social housing supply in Ireland are. 2.1 Tenement life. Slums The origin of tenements in Dublin may be tracked back as far as the sixteenth century when the population probably did not exceed sixty thousand.'(Kearns, K.C.2006) Â   Â   The vast majority of the Irish population lived in rural areas. Great famine and industrialization in urban areas had led to a growth in slum housing due to increased population, as well as poor sanitation and the spread of disease. (Chapter 2. 2011). Between 1841 and 1900 Irelands population declined but Dublins increased from 236,000 to 290,000. Dublins slums were the worst in all of Europe for nearly 150 years. Between 1900 and 1938 there were over six thousand tenement houses in Dublin occupied by over one hundred thousand tenement dwellers. Those people had occupied spacious Georgian houses abandoned by their original owners who left into newly-built suburbs. House prices dropped and went into the hands of landlords who tried to fit houses with as many residents as they could. Dwellings that had once been single-family homes were increasingly divided into multiple living spaces to accommodate this growing population. It was a logical solution for the citys lower classes who were simply seeking space to sleep in and shelter. (Kearns, K.C.2006). Tenement dwellings were overcrowded, some areas had 800 people to the acre. In one house lived as many as a hundred persons. Accordingly, in a single tiny room lived fifteen to twenty family members. (Kearns, Kevin C.2006).Table 1 demonstrates how many people lived in a one room tenements. (Census of Population. 1936). Despite the fact that Dublins overall density was 38.5 persons per acre the density statistics were astonishingly high as for example: Inns Quay 103, Rotunda 113, Mountjoy 127, and Wood Quay 138. Massive population was concentrated in close-knit communities around the Liberties, dockland and Northside. Table 1Source: Census of Population 1936 The living conditions were hellish. The buildings were not properly maintained and therefore were decayed, dangerous, and sometimes collapsed, killing occupants. The greatest deterioration and decay that buildings suffered was the second half of the nineteenth century. Those tenement districts were known as slumlands. (Kearns, K.C.2006). The slums along Church Street, Beresford Street, Cumberland Street, Railway Street, Gardiner Street, and Corporation Street and on Marys Lane were particularly appalling. The worst tenement slums around Liberties were on the Coombe and Francis Street, Cork Street, Chamber Street, and Kevin Street. (Kearns, K.C.2006, p.8). Maintenance and repair of the buildings was very expensive, so only the remaining wealthy Georgian house residents were able to do so because residents had no financial resources to keep buildings in a prime form. As a result over 60,000 people were in need of re-housing. There was a critical housing shortage. Dublins slums existed until 1940s. (Kearns, K.C.2006) 2.2 Slum clearance and Dublins corporation housing schemes The first nationwide system of welfare was formed on The Poor Relief (Ireland) Act 1838. Unfortunately system was not able to manage such huge levels of poverty and homelessness. (Meghen. 1955, p.44) In the end of 19th century there were a lot of various schemes, and legislation acts such as Public Health Act 1848, Artisans and Laborers Dwellings Act 1875, Housing of the Working Classes Act 1890, etc.; Charitable trusts, Philanthropic trusts, Guinness Trust, Sutton Housing Trust and many others that had to provide affordable and good quality social housing and also housing for the working classes. (Chapter 2. 2011, p.21-25). Despite all efforts the housing shortages were growing and by the 1914 tenement housing situation was so desperate that a real solution was needed without delay. (Kearns, K.C.2006). First intentions to promote slum clearance was not successful due to high cost of slum sites and re-housing of households. (Chapter 2. 2011). Only with the creation of the 1913 Housing Bill and the 1932 Housing Act did attention focus on financing slum clearance schemes and the provision of local authority housing for the lower-income classes. For the first time local authorities were empowered to deal directly with the slum problem in a systematic way. Unfit properties could be officially condemned and acquired compulsorily to be renovated or demolished. (Kearns, K.C.2006, p.21). During the 1940s and 1950s the Corporation has set a target that was a part of slum clearance program, to build four and five-story blocks of flats across the city center. Also at the same time, new housing development projects have been implemented in Cabra, Ballyfermot, Crumlin, Glasnevin, Donnycarney and Marino. (Kearns, K.C.2006, p.21). According to the Kennys Report (1973) the Irish population had increased from 1,229,000 in 1961 to 1,556,000 in 1971. Migration and economic growth increased need for housing and White Paper (1969) estimated that 15-17,000 houses would be required by the mid-1970s annually. 2.3 Ownership In the nearly 20th century only 20% of all Irish population were the owners of their houses and the rest 90% have rented their accommodation. (Sirr L. 2014). Home ownership quelled agitation for three reasons: having improved living conditions removed a primary cause of protest and discontent; a regular income was needed in order to maintain the newly owned home in respectable manner, which implied the requirement to be in work; and home owners were less likely to strike or protest due to fact that they now had something to lose-their homes. (Sirr L. 2014. p3). There was a various sales and taxation schemes that encouraged and facilitated Home ownership. (Sirr L. 2014). Over the number of years Ireland become as a nation of home owners. (Goodbody. 2015, p.15). However there are new generation of renters, not forced, but wanting to rent for personal and professional reasons, and the private rented sector is now replete with people who choose to rent, not because they couldnt get a mortgage but because they do not want to own a property. (Sirr L. 2014. p6). The table 2 below shows the number of renters increased during decade. Goodbody states that in 2011, there were 29% of households rent, with 18.5% of those in the private sector. (2015) Table 2Source: Goodbody 2015 More people are now renting, while people on lowest incomes are squeezed out of the relatively small rental market and are at greater risk of homelessness. (Irish Times, 8 Oct, 2015) In 2011 the National Economic and Social Council stated that the main future providers of new social housing will be the housing associations. (2014). There are three main providers of social housing accommodation in Ireland: Local authorities are the largest providers of social housing that dominate for nearly 120 years and controlled approximately 137,000 dwellings in 2014. The provision of social housing units by local authorities which is evident from Figure 1. Figure 1Source: Department of the Environment, Community and Local Government Approved Housing Bodies (AHBs). There are some 500 in Ireland that manage approximately 27,000 homes. Until 2011 AHBs were 100% funded by government under Capital Assistance Scheme (CAS). The top 10 are listed by size in the table 3 below. Table 3Source: Housing Agency, 2014 Private rental sector provides accommodation for 74,000 households supported by Rent Supplement. (Environment, Community and Local Government. 2014). The breakdown of housing support in Ireland is demonstrated in a Figure 2. Figure 2Source: The Social Housing Strategy 2020 According to Social housing newsletter published in 2012 there are the main grant funding schemes in Ireland: Local authority acquisition/construction program. By this programme local authorities buy or construct new housing units. Government provides 100% capital grant. Capital Assistance Scheme (CAS). Operates since 1984. Funding up to 100%. Scheme is for AHBs that provide housing for people with specific needs i.e. elderly, homeless people, and people with disabilities. Payment and Availability Agreement (PAA). This programme is designed to assist Approved Housing Bodies that make their properties available for use as social housing for around 30 years. Capital Advance Leasing Facility (CALF) Provides a long-term government loan for a 25 year period with a simple fixed interest rate of 2% per annum. Established in 2011. The Housing Finance Agency Provides loan to local authorities and AHBs social housing and other housing-related purposes. Established in 1982. Commercial lenders. Some interest in lending to the sector with a maximum duration of 7-10 years have shown Bank of Ireland, Allied Irish Bank and Ulster Bank. (Fund Structuring Services Final Report, 2014) The Social Housing Leasing Initiative Launched in 2009. Properties are leased from private property owners. The purpose is to provide accommodation to those on social housing waiting lists. The Capital Advanced Lending Facility (CALF). This is along-term government loan, when 30 per cent of the total funding required is covered by government, and balance is covered from a financial institution. Introduced in 2011 and is for term of between 10 and 30 years. 5.1 Demand Demand for housing will continue to increase. According to new figures from the Housing Agency homes that were built in Dublin last year only met half of the demand. Irelands population increased by 30% in the last 20 years. At the moment approximately 4.6 million people live in a country. It is the highest population for 150 years. An increasing population and a declining household size will both increase demand for housing units. (2015). National Economic Social Development office (NESDO) defines the factors that stimulate housing demand: Economic growth; Demographic developments; Patterns of income distribution; The level and distribution of wealth; The cost and availability of finance; Fiscal policy; The level of housing stock. According to Goodbodys research, to meet demand the housing supply needs to increase. (2015) 5.2 Supply The Irish housing market experienced an oversupply due to an overbuilding in the 2000s boom years. As a result 11.5% of the housing stock was vacant in 2011. But at the same time there was significant supply shortages in Dublin standing at 5%. (Goodbody. 2015). Table 4 demonstrates vacancy rate by type and region in 2011. Table 4Source: Goodbody 2015 In recent years demand for social housing has been rising due to increased population. Table 5 below outlines that almost 21,000 additional residential units are required to be supplied each year over the next three years to meet demand. Table 5Source: Housing Agency. Outlook for 2015-17 Factors that may affect the slow supply: Construction sector capacity; The scale of price declines; Funding; Planning; Building regulations; There are now 100,000 people on the social housing waiting list. Government announced recently that it will supply 35,000 additional housing units over the next six years as part of its Social Housing Strategy. In 2014 Irish housing completions grew by 33% to 11,000 units (Goodbody. 2015) as the figure 3 shows below: Figure 3Source: Goodbody 2015 The Irish housing market has changed radically in recent years and the existing framework underpinning the supply and funding of social housing supports is no longer adequate to address housing need.'(Coffey, 2004). The Environment, Community and Local Government (2014) excludes six main groups in the Housing Needs Assessment: Renting with Rent Supplement (47%) Renting without Rent Supplement (26%) Living with Parents (18%) Emergency Accommodation for Homeless People (2%) People with Disability (4%) It is estimated that c.40% of households in the private rental sector are in receipt of some form of government support. (Goodbody. 2015, p.16). 7.1 Sources of social housing supply in Ireland: Rent Supplement was started in 1970s as a short-term housing or welfare support. (Sirr L. 2014, p.79). It has played a central role in the expansion of the private rented sectorp31 and has become increasingly important for low-income tenants. (Sirr L. 2014, p.31). Rent Supplement is paid to people who are jobless and whose main income comes from social welfare payments. In other words it is payable for those who cannot provide accommodation from their own resources. People who are in full-time employment cannot claim Rent Supplement. (Sirr L. 2014, p.80) Rental Accommodation Scheme (RAS) was established in 2004 for those who were getting Rent Supplement for long time (eighteen months or longer). If Social housing was not available, they were accommodated in a private rented dwellings which were leased by local government for four to ten years. (Sirr L. 2014p31). Contracts were drawn up between Local authorities and Landlords to provide housing for people with a long-term housing need. Rent is between 88 and 92 per cent of the market rent and is paid directly to the landlord. (Citizens information, 2012). Housing Assistance Payment (HAP) is a new social housing support that replaced Rent Supplement introduced in 2014. Rent is directly paid to the Landlord by Local authority. (Citizens information, 2015). Table 6 outlines the number of households that are expected to be accommodated directly under HAP and RAS during 2015-2020. Table 6Source: Environment, Community and Local Government (2014) Social Housing Strategy 2020 Minister for the Environment, Community and Local Government Alan Kelly said that Working together, and through combining public, voluntary and private investment, we can provide our growing population with the required level of quality, affordable homes. (2014) The strategy responds robustly to that challenge by providing a roadmap that will accommodate 90,000 households, the entire Housing Waiting List, by 2020. (Coffey, 2004). It has a new vision to provide an access to secure, good quality and affordable housing every household in Ireland. Over a period of six years should be provided 35,000 new social housing units, also 75,000 households should be supported through the private rental sector. (Environment, Community and Local Government. The Social Housing Strategy 2020: Support, Supply and Report. 2014). Environment, Community and Local Government states that their plans should be delivered during two phases: Phase 1, building on Budget 2015, sets a target of 18,000 additional housing units and 32,000 HAP/RAS units by end 2017. Phase 2 sets a target of 17,000 additional housing units and 43,000 HAP/RAS units by end 2020.'(2014). Census of Population, (1936), [Online]. Available: http://www.cso.ie/en/media/csoie/census/census1936results/volume1/C,1936,Vol,1.pdf [Accessed 6th October 2015]. Chapter 2, (2011) Outline of the Development of the Irish Housing System [Online]. Available: http://www.nuigalway.ie/media/housinglawrightsandpolicy/Chapter-2-Outline-of-the-Development-of-the-Irish-Housing-System-Housing-Law,-Rights-and-Policy.pdf [Accessed 6th October 2015]. Citizens information (2012) Rental Accommodation Scheme [Online]. Available: http://www.citizensinformation.ie/en/housing/local_authority_and_social_housing/rental_accommodation_scheme.html [Accessed 7th October 2015]. Coffey, P TD Minister of State Department of the Environment, Community and Local Government (2014). In Environment, Community and Local Government. The Social Housing Strategy 2020: Support, Supply and Report. [Online]. Available: http://www.environ.ie/en/PublicationsDocuments/FileDownLoad,39622,en.pdf [Accessed 30th September]. Environment, Community and Local Government (2014). The Social Housing Strategy 2020: Support, Supply and Report. [Online]. Available: http://www.environ.ie/en/PublicationsDocuments/FileDownLoad,39622,en.pdf [Accessed 30th September]. European Investment Bank (2014) Final Report for the Department of Public Expenditure and Reform: Social Housing and Energy Efficiency in Ireland. Fund Structuring Services. [Online] Available: http://per.gov.ie/wp-content/uploads/EIB-Report-on-Financial-Instruments-and-Social-Housing.pdf.[Accessed 3rd October 2015]. Goodbody (2015) Irish Housing Market: A detailed analysis. [Online] Available: http://www.finfacts.ie/biz10/Irish%20Housing%E2%80%93Goodbody_via_Finfacts.pdf [Accessed 28 September 2015]. Housing Agency (2015) National Statement of Housing Supply and Demand 2014 and Outlook for 2015-17. Housing Agency, Dublin. Kearns, K. C. (2006) Dublin Tenement Life: An Oral History of the Dublin Slums. Gill Macmillan Ltd. Kelly. A TD Minister for the Environment, Community and Local Government (2014). In Environment, Community and Local Government. The Social Housing Strategy 2020: Support, Supply and Report. [Online]. Available: http://www.environ.ie/en/PublicationsDocuments/FileDownLoad,39622,en.pdf [Accessed 30th September]. Kenny J. 1973 Committee on the Price of Building, Dublin Lorcan, S (2014) Renting in Ireland: The Social, Voluntary and Private Sectors Meghen, P.G (2011) Building the Workhouses, In Chapter 2, Outline of the Development of the Irish Housing System[Online]. Available: http://www.nuigalway.ie/media/housinglawrightsandpolicy/Chapter-2-Outline-of-the-Development-of-the-Irish-Housing-System-Housing-Law,-Rights-and-Policy.pdf [Accessed 5th October 2015]. National Economic Social Development office, Housing in Ireland: Performance and Policy Background Analysis. The demand for housing in Ireland. [Online] Available: http://files.nesc.ie/nesc_background_papers/NESC_112_bg_3.pdf. [Accessed 5th October 2015]. Norris, M. (2014) Policy drivers of the retreat and revival of private renting: Regulation, finance, taxes and subsidies. In Lorcan, S. Renting in Ireland: The Social, Voluntary and Private Sectors OConnor, N (2015) Housing crisis: Ireland needs five to 10 new Ballymun as soon as possible. Irish Times, 8th October Redmond. D (2014) The private rented sector and rent supplement: The emergence and development of social housing. In Lorcan. S. Renting in Ireland:The Social, Voluntary and Private Sectors The Irish Council for Social Housing (2012) Social Housing Newsletter: Budget 2012 Report. Impact on Social Housing [online] Available: http://www.icsh.ie/sites/default/files/attach/publication/385/socialhousing-winter2011.pdf [Accessed 1st October 2015] White Paper (2011) Housing Progress and Prospects. In Chapter 2 Outline of the Development of the Irish Housing System [Online]. Available: http://www.nuigalway.ie/media/housinglawrightsandpolicy/Chapter-2-Outline-of-the-Development-of-the-Irish-Housing-System-Housing-Law,-Rights-and-Policy.pdf [Accessed 6th October 2015].

Energy Efficient Operation of Three Phase Induction Motor

Energy Efficient Operation of Three Phase Induction Motor Energy Efficient Operation of Three Phase Induction Motor Using DELSTAR Converter for Machine Tools Abstract DELSTAR converter is an electronic system to be interfaced with the existing STAR DELTA starter for machine tools. Induction motor consumes more power while it is operated at DELTA mode for a long time under no load condition. The proposed system gives the solution for the above stated problem. When the load on the motor is less than 40% of full load, it switches the motor to operate in STAR mode to save energy. When the load increases beyond 40%, it automatically switches the motor to operate in DELTA mode. The starting regimen is not disturbed. The proposed converter is recommended for applications where load changes are not too fast (not more than 120 times/hour). This can be used with any capacity motor by choosing appropriate current transformers (C.Ts) and setting the current level using the potentiometer built in. Keywords DELSTAR converter, machine tools, energy saving, current transformers Introduction Lathes will perform as many operations like face, turn, neck, taper, drill, bore, spin, file, polish, hone, buff, knurl, cut internal and external threads and cut off work. Relatively hard materials are handled by a metal lathe. For repetitive production of parts, turret lathes and capstan lathes are used. Induction motor of several HP is coupled with turret lathe and CNC machines too. Induction motors draw higher currents during their starting operations than is the case under full load running conditions. In the early days Direct-on-Line have been used. The short duration inrush currents, greatly exceeds the Starting currents. Complex starting methods to reduce Starting currents is compromised by other inrush currents [1], [4]. Induction motors are started normally with direct on line, but when large motors are started with D.O.L. starter, due to starting surge current, the supply line voltage is disturbed. To limit the starting surge current, reduced voltage is given to induction motors at start and then have full supply voltage when they run up to near rated speed. Comparison between the different starting methods of induction motor in terms of power quality is to figure out the reliable starting method which has the less power quality problems [5]. Efficient torque/current characteristics are provided by STAR-DELTA, industries prefer STAR-DELTA starters for their application. The large amounts of losses which occur at low speeds determine the users given by the wound rotor only for starting. The losses specific to the additional rotor resistor are quite important [3] while analyzing the performance of the induction motor. Industries will operate three phase induction motors at delta connection mode since machine runs very efficiently when the machine under fully loaded condition. When the motor is loaded less than 40% of the full load, it runs under inefficient energy zone. So, the induction motor will consume more power from the supply side during partially loaded condition. In order to compensate the power consumption, the motor load is virtually added by connecting stator winding from delta mode to star mode. If the load on the motor is increased above 40% of full load current, winding connection automatically changes from star to delta for efficient operation. Figure 1 Block diagram of proposed system System Analysis Existing System Motor draws more current than the full load at the time of starting, resulting in burnout of motor winding and / or starter. When DOL starter is used, because of high starting current, there is a big voltage dip in the electrical installation and therefore DOL starter is not suitable for higher rating squirrel cage induction motors. Significant energy wastage results reduced motor life. The system which exists is starting current reduction and the starters at the time of start of motor is star-delta starter. The STAR-DELTA starter is used at the time of starting only, not under running condition. The starter may be operated semi-automatically or fully-automatically. The semi-automatic operation is done by the push button switch. Fully-automatic starter is built with the timer which is used to change the STAR to DELTA connection after some predefined time. The both types of STAR-DELTA starter changes the winding connection from STAR to DELTA, and it is not possible to change the windi ng connection from the DELTA to STAR during running of induction motor. This problem is overcome by employing proposed starter with induction motor which changes the winding connection during both starting and running condition. 2.2 Explored Technology The proposed converter (refer figure 1) is to change the winding connection from STAR to DELTA and vice versa at the running condition of the induction motor. The switching process is done according to the load variation of the motor at particular instant. The construction of the converter is also similar to the starter with the small modification in the circuit. It is an automatic converter and the automatic process is made by the microcontroller. In the ancient system, there is no microcontroller available. Any one of the phase is taken for the current sensing using current sensor. The sensor circuit continuously senses the load variation in the motor and the output is produced according to the variation of load. When the load on the motor is less than 40% of the full load rated current, the controller activates the STAR connected contactors, so that the motor can run at STAR connection. When the load on the motor is above 40% of full load rated current, the controller activates th e DELTA connected contactors, so that the motor can run at DELTA connection. The converter accurately operates for the pre-setting value of the current sensor. If the motor load current reaches to 41% of the full load rated current the converter switches the motor from STAR to DELTA. And, if the motor load current comes 39% of the full load current, the converter switches the motor from DELTA to STAR. The converter can sense the current continuously so that the losses are reduced by maximum amount. Moreover, the converter can also be used as the starter. System Specification Hardware units are split into many sub units and each unit requires power supply to energize the circuit. Figure 2 Power supply circuit for relays and microcontroller +12V SPDT relay and +5V SPDT relay were used here. So that relay requires +12V supply and +5V also for microcontroller unit. The LM7812 and LM7805 are the voltage regulators which is used to regulate the output voltage of the bridge rectifier in Figure 2. Then the output is again filtered with the capacitor. +24V power supply is used to energize the sensor unit. The current is sensed with the help current transformer with buffer unit to adjust the current setting. This circuit is designed with the help of LM317k voltage regulator in figure 3. Figure 3 Circuit diagram for sensor unit motor Above the preset value, the transistor operates and relay gets energized so that microcontroller switches the operation into DELTA mode. Microcontroller switches the operation into DELTA mode. The conversion process takes minimal time in milli seconds and give accurate change over from STAR to DELTA and vice versa. ULN2003 is a driver which drive the signal input from current sensor to the microcontroller and also the STAR and DELTA contactor. The analog output from the microcontroller is not suitable to operate the +12V relay. So the analog output of the microcontroller is changed from the +5V to +12V with the help of driver unit (refer Figure 4). The microcontroller is to control the switching of STAR or DELTA relay while the motor is under the running condition. When the load is current is below the predefined value, the controller will energize the STAR contactor and if the controller input is high, it will activate the DELTA contactor. The input and output are enabled in the same port of the microcontroller. The pin 2 is enabled for STAR and the pin 3 is enabled for DELTA. The mode of operation is displayed in the Liquid Crystal Display. XTAL1 and XTAL2 are the input and output respectively of an inverting amplifier which is used as a crystal oscillator in the frequency range of 1.2 MHz to 12 MHz. The RESET circuit is connected with the microcontroller in pin 9 (refer Figure 5). Figure 4 ULN2003 driver circuit Figure 5 Circuit diagram of controller unit The output of the relay driver is given to the relay coil for energizing. The output of the relay driver unit is either 0V or 5V. The relay is connected in 15th pin of the driver IC. So, whenever the output of the relay is +5V then the star contactors will be activated. The delta unit is also used to connect the motor with the converter part. Figure 6 Circuit diagram of star contactor The output of the delta relay driver unit is either 0V or 5V. So, whenever the output of the relay is +5V then the delta contactor will be activated. Figure 7 Circuit diagram of delta contactor With the help of the above arrangements, the contactors change the winding connection from STAR to DELTA and DELTA to STAR simultaneously while the motor is under running condition. The LCD display unit will display the motor running condition and also the load current. LEDs are used to indicate the status of the relays. Experimental Results The converter is tested with 5HP squirrel cage induction motor by conducting simple brake test in laboratory. The power factor is fairly good in delta mode compare to the star for the same current values of the motor. The performance of the induction motor is good in delta connection but only when the motor is under fully loaded condition. Under no load or partially loaded condition, the motor operated in inefficient zone since machine consumes more energy than star mode. The table given below proves that the converter can improve the efficiency of the motor at the same time; it can reduce the energy consumed by the motor significantly. TABLE I Energy Saving Data For A 5 HP Motor Load Current in Amps. Power Factor Output Power in Watts Volt Amps Delta Star Delta Star Delta Star Delta Star 3.7 0.8 0.17 0.23 367 128 2140 532 4.4 0.95 0.15 0.24 476 165 3025 641 4.7 1 0.15 0.34 545 233 3177 673 4.8 1.4 0.28 0.65 866 606 2961 887 5 2.1 0.43 0.80 1240 986 2922 1231 5.5 2.7 0.53 0.85 1741 1493 3298 1735 6.3 5 0.71 0.86 2691 2559 3661 2918 The tests conducted on a 5 HP motor with a full load current of 7.9 amps, the energy savings on no load is 65.3%, reduction in operating current is upto 79.4%, reduction in demand 78.8% and improvement in power factor 60%. Figure 8 Characteristics of Motor (Star Delta) Discussions And Future Developments This work concluded that the star delta converter is very useful for all the kind of three phase induction motors from smaller rating to the larger rating, the converter can be designed accordingly. In the present days, the starters only used and it has low sensitivity. If the automatic star delta star converter is replaces the starter, the performance and life time of the motors will be increased. Since the converter can be operatable at the running time of the motor it reduces the losses in switching and during operation. The converter is designed with the small hardware units and it is very easy to install with the motors. Cost wise also the converters is very economical. This converter will reach the market with cheaper cost soon and reduces the energy consumption. References P. C. Krause, O. Wasynczuk, and S. D. Sudhoff, Analysis of Electric Machinery and Drive Systems, 2nd ed. Piscataway, NJ: IEEE Press, 2002. D. Gritter, D. Wang, and T. G. Habetler, Soft starter inside delta motor modeling and its control, in Proc. IEEE-IAS Annu.Meeting, Oct. 8-12, 2000, vol. 2, pp. 1137-1141. Williams, A. Jack., Griffith, M. Shan, Evaluating the Effects of Motor Starting on industrial and Commercial Power Systems, IEEE Transactions on Industry Applications, 1978, Vol. IA-14, No. 4, pp. 292-305. Larabee, J., Pellegrino, B., Flick, B. Induction motor starting methods and issues, Industry Applications Society 52nd Annual Petroleum and Chemical Industry Conference, 2005, pp.217-222. Phillip W. Rowland, Low Impact Motor Control with Star-Delta Starting, IEEE Annual Textile, Fiber and Film Industry Technical Conference, 1998, pp. 10/1 10/9. Austin H. Bonnett, The Benefits of Allowing for Increased Starting Current in AC Squirrel Cage Induction Motors, IEEE Transactions on Industrial Applications, 1991, Vol. 27, No.6, pp. 1169-1174. Chapman S.J., Electric Machinery Fundamentals, 4th ed., Australia: Mc Graw-Hill, 2005, pp. 380-472. AUTHORS BIOGRAPHY PREMKUMAR Mcompleted his Bachelor of Engineering in Electrical Electronic Engineering in Sri Ramakrishna Institute of Technology, (SRIT), Coimbatore -641010, India. He also completed his Master degree in Applied Electronics in Anna University of Technology, Coimbatore, India. Currently, pursuing his Ph.D. in Anna University, Chennai. The author has presented many Technical Papers in various National International Conferences. Currently, he is working as an Assistant Professor in Electrical Electronics Engineering. His field of interest is Electrical machines, embedded systems, Renewable energy resources, Robotics, Electrical drives Control and Power electronics. SOWMYA R received her B.E. in Electrical and Electronics Engineering from Saranathan College of Engineering, Tiruchirappalli, India in 2013 and M.Tech. in Energy Engineering from National Institute of Technology, Tiruchirappalli , India, in 2015. She worked as an Assistant Professor/ Dept. of Electrical and Electronics Engineering in KPR Institute of Engineering and Technology, Coimbatore, India for the academic year 2015-2016. She is currently working as an Assistant Professor/Dept. of Power Engineering in GMR Institute of Engineering and Technology, Rajam, India. Her research interest includes control systems, Electric vehicle and Renewable Energy.

Critical Thinking and Computer Logic :: Case Study, solution

With the PCLM solution came another set of problems, the largest being that of what to do with the existing personal computers. We had just assumed we could dispose of the outdated computers as you would any other item, by placing it in the trash. That turned out to not be the case, we had to obey all local, State, and Federal regulations regarding the proper disposal of personal computers and CRT monitors. The other unforeseen circumstance was compiling with Federal laws associated to properly destroying all sensitive customer information off the PC hard drives. HIPAA physical safeguard contain the following regulation; disposal, implement policies and procedures to address the final disposition of electronic protected health information, and or the hardware or electronic media on which it is stored; media re-use, implement procedures for removal of electronic protected health information from electronic media before the media are made available for re-use; accountab ility, maintain a record of the movements of hardware and electronic media and any person responsible therefore. (Phoenix Health Systems, 2006) With regards to disposing or recycling of old computer equipment there are very many key things that need to be considered. What are the fees for disposing or recycling of computer and other electronic equipment? Is disposing of electronic equipment equally as environmentally safe compared to recycling? What are the long-term effects of disposing this kind of materials? Can anyone benefit from the recycling of computers or other electronic devices? These are some of the things that should be considered when deciding to dispose of old or unwanted computer materials. Each company must see which option is best for them and their ideals. Usually there are nominal fees for companies to pick up and dispose of computers, monitors, and printers, the same can be said for recycling. There are even free options that are sometimes offered by non-profit or government agencies in order to help ease the land filling of this type of materials. Just last year the Michigan Department of Information Technology and the Michigan Department of Environmental Quality teamed up with Dell, Inc. to host free computer recycling collections at three locations across Michigan to provide citizens with a better alternative for disposing of their electronic computer equipment (State of Michigan To Hold Computer Recycling Events, http://www.

Patriarchy in Franz Kafkas The Metamorphosis :: Metamorphosis essays

Patriarchy in The Metamorphosis Patriarchy, that is, the supremacy of the father in a family and the reckoning of descent and inheritance in the male line, plays a major part in family life. However, the institution of patriarchy is not just limited to European cultures. In this essay, we will examine the instances of patriarchy in "The Metamorphosis" and compare it to instances in Japan. In the beginning of "The Metamorphosis," we can tell from the way Gregor's family is organized that Gregor is the 'father figure,' in that he is the primary breadwinner and the one who makes most of the decisions for his family. On page 1781, we can see Gregor thinking that me would "take charge of the family's affairs again," hence showing that before he turned into a bug, he was the dominant person in the family. He is the only person in the family who actually goes out to earn money. His father has already retired, while his mother and sister, following the standards of that time, do not go out and work. Gregor is the only one who goes out as a traveling salesman, and is responsible for earning money for the whole family. His father stays at home and only "lies wearily buried in bed"(1778) while Gregor goes out on business trips. From this, we can see that Gregor has taken over his father's responsibilities as head of the household. He is earning money and supporting the family while his father has retired and only stays at home, doing nothing. This conforms with the practice of patriarchy in that the son, Gregor in this case, inherits the position and responsibilitles as head of this household from his father. In Japan, the son of a family is expected to take over the responsibilities of taking care of his family when his father retires, similar to how Gregor takes over in his family. The son is also expected to look after his parents after they grow old and retire, similar to how Gregor looks after his retired father and mother. If he does not look after his parents, he is thought of as being 'unfilial' and seen as a bad person. In contrast, daughters are expected to go out and find a good husband and get married, similar to Grete at the end of "The

Trapped by Two Cultures in Beets, Made You Mine, America, and Sangre 24 :: Cultural Identity Essays

Something that has always fascinated me is the confrontation with a completely different culture. We do not have to travel far to realize that people really lead different lives in other countries and that the saying "Home sweet home" often applies to most of us. What if we suddenly had to leave our homes and settle somewhere else, somewhere where other values and beliefs where common and where people spoke a different language? Would we still try to hang on to the 'old home' by speaking our mother tongue, practising our own religion and culture or would we give in to the new and exciting country and forget our past? And what would it be like for our children, and their children? In Identity Lessons - Contemporary Writing About Learning to Be American I found many different stories telling us what it is like to be "trapped" between two cultures. In this short essay I aim to show that belonging to two cultures can be very confusing. In 'Beets' by Tiffany Midge we meet a family of four, where the mother is an Indian and the father is white. The eldest daughter learns about the Plains Indians and their culture in school, but the "truth" she is told there is different from the one her father wants to prove. Such mixed messages are also what the speaker of Abraham Rodriguez Jr's 'The Boy Without a Flag' receives. He refuses to salute the American flag, because his father keeps on talking about all the bad things America has done to their home Puerto Rico, and thus believes that he has done what is expected of him, but the father gets angry with him for jeopardizing his education and future. The boy feels as if the father has collaborated with the enemy and does not understand how this could have happened. It took him until he had grown up to understand that the father only wanted what was best for him. Â   In 'Made You Mine, America' Ali Zarrin describes his coming to the USA as a teenager to study and find himself a better future. It was a struggle for him to cope with the differences from his native country in the Middle East: America was to be the country of dreams and possibilities, but he had to realize it had the poor and homeless people as well.

Driving While Using Cell Phones

Abstract of Cell phone and drivers research paper This report assesses the risks and benefits associated with cellular phone use while driving. The interest of policymakers in this issue has been heightened by the recent decisions of selected foreign countries and several U. S localities to restrict or prohibit the use of cellular phones while driving. The weight of the scientific evidence to date suggests that use of a cellular phone while driving does create safety risks for the driver and his passengers as well as other road users.The magnitude of these risks is uncertain but appears to be relatively low in probability compared to other risk in daily life. It is not clear whether hands-free cellular phone designs are significantly safer than hand-held designs, since it may be that conversation rather than dialing or handling is responsible for most of the attributable risk due to cellular phone use while driving. The benefits of using this communication device while driving appear to be important.They include benefits to the users, households, social networks, businesses, and communities. Many of these benefits, which include public health and safety considerations, have not yet been recognized or quantified. Simple suggestions that drivers can â€Å"pull over† on the side of the road to make calls from cellular phones are unrealistic and, in certain situations, potentially dangerous. It is not know which of the benefits of cellular phone use would be foregone under various regulatory scenarios.Cellular phone use while driving should be a concern of motorists and policymakers. We conclude that although there is evidence that using a cellular phone while driving poses risks to both the driver and others, it may be premature to enact substantial restrictions at this time. Indecision about whether cellular phone use while driving should be regulated is reasonable due to the limited knowledge of the relative magnitude of risks and benefits.In light of thi s uncertainty, government and industry should endeavor to improve the database for the purpose of informing future decisions of motorists and policymakers. In the interim, industry and government should encourage, through vigorous public education programs, more selective and prudent use of cellular phones while driving in order to enhance transport safety.

Shall I Compare Thee to a Summer’s Day

Word Count: 617 Teanna Armstrong Enc 1102 Essay #3 March 11, 2013 Sonnet, Theme, and Structure of â€Å"Shall I Compare thee to a Summer’s Day? † A sonnet’s structure has symbolism and it presents the theme in many poems of Literature. In the poem â€Å"Shall I Compare thee to a Summer’s Day? † by William Shakespeare happens to be a sonnet. To begin with, the sonnet mentioned above is called a Shakespearean sonnet. It is composed of three four-line quatrains and a concluding two-line couplet. Certain components of the author’s point are suggested to be based on its structural patterns; components such as thought and feeling.Meaning this sonnet can introduce the subject in the first quatrain, expand and develop it in the second and third quatrains, and conclude something about it in its final couplet. This whole set up helps the reader to capture the theme; and helps the author to organize the theme. As well as, the sonnet’s structure p lays a key role, other than just being a Shakespeare and sonnet. The structure of the sonnet is strictly constrained, and this one in particular is believed to be a fixed form sonnet. Poems in fixed forms are recognized by their rhyme, meter, and repetition.Furthermore, usually in its opening line the central idea of the poems is expressed. The theme of the poem â€Å"Shall I Compare the to a summer’s day† May be stated as: Can someone, or the subject, really be compared to all the components of a summer after understanding the theme it shows the reader that the sonnet is asking is the subject comparable to a summer’s day, making the structure of the poem easier to understand. To illustrate, the theme is hinted in the first half of the first stanza; which starts the order of the sonnet’s theme. It is clearly indicated that the second line: â€Å"Shall I compare thee to a summer’s Day? (874) is the question that he will be answering. This question also shows that a comparison will be made. The question that remains is what is being compared to what. This is answered in the second line, which states â€Å"Thou art more lovely and more temperate† (874). This statement shows that Shakespeare is comparing a summer’s day to a person who is more lovely and temperate compared to the day of a summer. Moreover, the structure of this sonnet has setup the central theme for the reader in the first stanza. What lies in the next two stanzas are details and deeper emotions or thoughts to fill the reader’s mind with illusions of the sonnet.These middle stanzas are placed in Shakespearean sonnets for this essential reason. The details in this particular selection creates more compare and contrast examples between that person and a Summer’s day. Although Shakespeare wrote the contrast and compare by explaining all of the Cons of summer in these two stanzas, and in the last two line, also known as the couplet, he tur ns the direction back onto the person he was speaking of to show what the cons were compared to. Not only that, but Shakespeare also showed meaning in this couplet: â€Å"So long as men can breathe†¦ This gives life to thee† (874).The statement stated before is meaning the opposite of what was said in the first two stanzas about the summer. Instead, Shakespeare is indicating that the person will live on through his poem forever unlike a Summer’s day. In Conclusion, many poems have different components that lead the reader to realize the central theme. In sonnets particularly, everything is placed where it should be for a reason. All sonnets have symbolism and presents the theme in many pieces of literature as explained above. . Works Cited 1. Diyanni, Robert. Literature: Reading Fiction, Poetry, and Drama. Unites States of America: McGraw-Hill Companies, 2007. Print.