本帖最後由 serrurier 於 2013-12-19 07:24 AM 編輯
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Scotland Canals
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# L: Q+ V/ ^+ ]At the beginning there were two canals:
3 A1 N4 X1 y9 C2 ]1 d* k. Z. }tvb now,tvbnow,bttvbCanal Forth and Clyde was built in 1777, between harbors Grangemouth and Falkirk connecting Glasgow with west cost of Scotland.$ Z4 M: J" D( C( b+ x9 L
Canal Union between Falkirk and Edinburgh was finished in 1822. Because of geographical difficulties, which created a difference of 79 ft. in elevation, the two canals were connected by 11 locks.) d2 K8 s F4 u1 a. {
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1 ?9 g3 I n/ |# cwww2.tvboxnow.comIn 1963,after 150 yrs of existence of this water way with 11 locks the construction of a huge water carousel started.
8 x% S2 s" q# L7 q6 H. F- O公仔箱論壇This extraordinary idea was finished in 2002 and became a symbol of Scotland.This invention saves not only time but also energy.
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This is the only rotational boat transporter in the world. It has two arms and each arm forms a kind of huge tub filled with water.
+ c" J4 F, g2 tBoats enter the tub, then the tub locks up and the huge arm starts rotating .
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8 [% G9 T6 \ e% F5 K3 K( I- ^Entrance to lower canaltvb now,tvbnow,bttvb$ M: _$ X! S6 Y) C! {: H& }* E( k
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A Boat is approaching the “tub”
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7 K# G2 b& ]! Z* @+ e3 s( v8 K公仔箱論壇There are boats in both “tubs” upper and lower
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Rotation is startingtvb now,tvbnow,bttvb4 ]9 V; z& ~; z' v
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Boats in both rotating arms
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/ T) Y' v$ L: c; wRotation
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Just before “landing”
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1 V t# U$ T" T1 H: y* Q# h公仔箱論壇Closing the gate, regulation of level of water and“tubs” rotation Takes 15 min. only.
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One“tub” 78 ft. long with water and boat weights about 300 tons.
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The“tubs” are filled according the Archimedes’ Law. So the weight of “tubs” are balanced. To open the upper and lower lock and turn the whole system by 180◦they need an engine of 22.5 kW which only use 1.5 kWh* Y4 |$ j# \. j5 M0 N8 F
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