Petersburg Cooling Tower Auxiliary Power Usage with VFD’s/ Control Strategy Michael J Smith – IPL Engineering & Project Management Abstract--The temperature control strategy for the cooling tower fans involves two automatic modes of operation as well as provisions for manual operation. Both modes will provide sequencing for starting/stopping each of the 14-250hp‚ 480vac fans that have been made available for automatic control. Auxiliary power savings on the 3MVA‚ 4160vac tower load can be between
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LEANING TOWER OF PISA The tower in Pisa‚ Italy‚ is famous simply because it leans. Although the tower is famous because it leans‚ it is an outstanding example of Romanesque architecture‚ and would probably be famous‚ even if it didn’t lean. The height of the tower is 55.86 m (183.27 ft) from the ground on the lowest side and 56.70 m (186.02 ft) on the highest side. The width of the walls at the base is 4.09 m (13.42 ft) and at the top 2.48 m (8.14 ft). Its weight is estimated at 14‚500 metric
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Blaise Main Leaning Tower of Pisa Mrs. Carlson The Leaning Tower of Pisa is a freestanding bell tower located at the Cathedral Square in Pisa‚ Italy. It was built in three different stages over 177 year period. There has been controversy about the real identity of the architect for many years. Construction on the first floor began in August of 1173. Five years later‚ while building the third floor
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Her Majesty’s Royal Palace and Fortress‚ more commonly known as the Tower of London‚ is a historic castle on the north bank of the River Thames in central London‚ England. It lies within the London Borough of Tower Hamlets‚ separated from the eastern edge of the City of London by the open space known as Tower Hill. It was founded towards the end of 1066 as part of the Norman Conquest of England. The White Tower‚ which gives the entire castle its name‚ was built by William the Conqueror in 1078‚ and
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Introduction Traveling is one of the ways of discovering new countries. Millions of people all over the world spend their holidays traveling. They travel to see other continents‚ modern cities and the ruins of ancient towns‚ they travel to enjoy picturesque places‚ or just for a change of scene. Its always interesting to discover new things‚ different ways of life‚ to meet different people‚ to try different food‚ to listen to different musical rhythms. Those who live in the country like to go
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Leaning Tower of Pisa Torre Pendente di Pisa Location: Pisa‚ Italy Built: 1173-1350 Architect: Unknown. The tower may have been designed by Bonanno Pisano and Guglielmo of Innsbruck‚ Austria or Diotisalvi. The Tower of Pisa was designed as a bell tower but its main purpose was to promote the town of Pisa. The foundation of the tower was only three meters thick and the soil underneath was unstable. A series of wars interrupted the construction for many years. During the long pause‚ the soil continued
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novel‚ “The Seventh Tower” by Garth Nix‚ is a fantasy tale of two children from very different worlds‚ socially and geographically‚ who are forced by fate to work together towards a common goals. The world has been shrouded by a magical veil that blocks out the sun‚ and thus the only source of the natural light comes from objects that are grown above the Veil known as sunstones. These stones range in size and power and are grown at the top of the seven lofty towers- one tower for each color in the
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I slowly lay back in the grass. The sight in front of me is too much to take in while standing. The wetness of the grass sends a chill running down my spine and along my arms. My sweatshirt cannot warm me from this chill tonight. It is the infamous chill that one receives when something really touches them. When you hear a story and it makes you happy or sad or when someone tells you that they love you. It is a meaningful chill‚ one you will never forget. All of the lights begin to dim and the
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How do deaf people use telephones? What about doorbells and alarm clocks? There are many everyday devises that we hearing people take for granted‚ among these are telephones‚ smoke alarms‚ doorbells‚ and alarm clocks. When we look at how members of the deaf community use these everyday items we must consider that members within the community have very different communication needs‚ abilities‚ and preferences. Hard-of-hearing people for example can use a standard telephone with the addition of
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and Controversy Surrounding the Eiffel Tower The Eiffel Tower is one of France’s most notable landmarks and one of the most recognizable structures in the world. It has been visited by roughly 243‚376‚000 people between its opening in 1889 through the end of 2008 (Official Site‚ 2008). Recently‚ it has averaged over 6.5 million visitors annually. In 2007 alone‚ its visitor total reached an astonishing 6‚822‚000 individuals (Mills‚ 2008). The Eiffel Tower stands next to the Seine River in Paris
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