Page 62 - 捷運技術 第29期

56 29 92 8

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1( )1 3....................................(1)
( a s)/ a
(Ts Ta)/Ta

Q (m3/sec)
1 (0.7 1.1)

g (m/sec2)
(kg/m3)
T (K)
a
s

400 50 2 2

1.0 9.8 (673 298)/298 0.5 2 2 1 3
2.91m/sec

D.

3
V(t)~(g Q /t)1/5................................(2)
Q g T (1)