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目前顯示的是 十一月, 2008的文章

Siphon, Ebb and Flow

英文版, English version 中文版, Chinese version 西班牙文版, Espanol version 
Siphon 1 A pipe or tube fashioned or deployed in an inverted U shape and filled until atmospheric pressure is sufficient to force a liquid from a reservoir in one end of the tube over a barrier higher than the reservoir and out the other end. 2兩 端的大氣壓力一樣,但管內兩端的水受重力作用而各自下墜,下墜瞬間,在圓弧頂部拉出一個真空,因真空而有壓力差,此時兩端的大氣壓 力再次從兩端將兩管的水壓回,但壓回的力量是大氣壓力減去管內的水壓(F=(Patm-PH2O)*A),而長管內的水比短管內的水還要重,所以壓回的力 量是短管的壓力大於長管的壓力,所 以,虹吸管內的水就會不斷的由短管端流入而由長管端流出。
3如果我們用兩根連通管,所以效率會變成兩倍。
4如果用兩根連通管,但是其中一個連接抽水馬達,此時一根連通管是抽水,所以另一根把水送回,大氣壓力將兩管的水平衡,所 以,一個馬達可以有兩倍的動力,水就會不斷的循環。

問題1:請比較上連通管與下連通管的差異? 問題2:請問雙連通管時,管徑與高度差的關係? Basic Ebb and flow operation 

1 As liquid fills the dosing tank, the level of liquid in the tank and inside the siphon bell rise at the same rate. (The siphon bell is open at the bottom). The siphon is vented to the atmosphere through the vent piping. This rising action continues until the level of the liquid reaches the open end of the outside vent…