????????(genernal ventilation ?silution ventilation) - PowerPoint PPT Presentation

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Title:

????????(genernal ventilation ?silution ventilation)

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Title: Author: cla Last modified by: ntu Created Date: 6/14/2004 11:02:08 AM Document presentation format: – PowerPoint PPT presentation

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Title: ????????(genernal ventilation ?silution ventilation)


1
????????
  • ??????

2
???????
  • ???????????,????????
  • (?)?????????????
  • (?)???????????????
  • (?)???????????
  • (?)???????????

3
????????
  • ???????????
  • ??????????????????
  • ???????????

4
????????(genernal ventilation ?silution
ventilation)
  • ??????,??????????????
  • ????????????????,??????????????????????,??????????
    ?

5
????????????????
  • (1)????????????
  • (2)??????????
  • (3)??????????
  • (4)???????????????

6
(?)????????
  • 1?????
  • 2?????
  • 3??????

7
(?)????????????
  • ????????,???????????????,?????,????????

8
(?)??????
  • ?????????Q,?????????(g/h)???,?????c(ppm)???,?????
  • ??M??????
  • K????3?10

9
????????
  • ??????????????????????,????????????
  • ???????????????,????????????????????????,?????????
    ???????
  • ?????????????????????????????

10
(?)????????
  • ???????????????????????????,????????????
  • ???????????,?????,???????????????
  • ????????????,?????,???????????

11
(1)????????????
  • ??????????????,???????????,??????????????
  • ?????????????????

12
(2)??????
  • ???????????????????????????????????????,??????????
    ?,????????????

13
(3)??????
  • ???????????????,?????????????,????????????????????
    ???
  • ???????????????

14
(4)??????
  • ????????????????????????,??????????????????????

15
1.?????
  • ????????? (Q,m3/min),?????????????,???????????????
    ??????

16
(1)?????????
  • Q60AV
  • ?? A???????,m3
  • V?????????,m/s

17
(2)???????????????
  • ????????
  • ?? Vc????,m/s
  • X?????????????????

18
(3)?????????
  • ??P???,m
  • H??????,m
  • V????????????????
  • ??m/s
  • L????

19
2.????????
  • ??????????,?????????(vena contrata),??????????,???
    ??,????2??,??????,????????,????????????

20
  • ???????????V(m/s)????????Ce??,???????????????100?
    ???,??????

21
  • ?? PV ??????mmH2O
  • Psh????mmH2O
  • Ce ????,???
  • PShPv he
  • ?? he??????
  • ?

??Fh???????? ????????????????Ce?Fh
22
(?)????????
  • ??????????,?????????,????,?????????,??????????????
    ????????????????????,???????????????????10m/s?????
    ,????15m/s,??????20m/s,???25m/s????25m/s???
  • ??????,????????????????????????,??????????????????
    ?????

23
1.????
  • ?????????,??????????????,??????,?????????(de
    cm)???????
  • ?? ???????????

24
2.?????????(????)
  • ????????????????????,?????,?????????????,?????????
    ?????
  • ?? f????????
  • ?????
  • d ????
  • g????,9.8m/s2
  • V????,m/s

25
  • ??????????????????(friction chart)?????????????1,?
    d,V,Q????????????R?Pu,??????????????????PRu??1.5(?
    ???),2.0(?????),????????PVC????0.9?????????PRu????
    ??????

26
3. ??????????????? ???? ????
  • ??????????,????????????????????,?????????
  • PR ?pv
  • PR????,mmH2O
  • ???????
  • PV??mmH2O

27
(?)????????
  • ???????????????,??????,?????,????????,????????????
    ???????????
  • ????????????,????????????????????,???????????????

28
1.????
  • ??????????,??????????????????????????,
  • ?????????????????????,??????????????,?????????????
    ????
  • ??????????????????,??????,????????,???????????????
    ?????????

29
  • ??????????????,?????????,??????????,??????????????
    ????????????????,??????????,?????????,????????????
    ??????????,???????,???????????????,??????????

30
  • ????????????,??????????,??????????,?????????,?????
    ???
  • ?????????,??????????????,????????,????????

31
2.??????
  • ??????????????????,??????????
  • ????????,????????,??????????,?????????
  • ?????????????,?????????????????????????????

32
(?)??????
  • 1.?????,Ptf(mmH2O)
  • Ptf Pto-Pti
  • ?PRi
  • ??????????????????,???????????????????????????????
    ????????,????????????????????????????????,????????
    ??

33
  • ??????????????,??????????????,????????????????????
    ,??????,?????,????????????,?????????

34
2.???????,Q(m3/min)
  • ??????????????,???????????????????????,??????????
    ????????
  • ?????,???????????,?????????????,??????????????????
    ???

35
3.??????
  • ??? BHP
  • ???? HP
  • ?? BHP???
  • HP????,??
  • Ptf ?????,mmH2O
  • Q ???????,m3/min
  • ? ????????
  • 1.2?????????
  • 1.4??????????

36
(?)????
  • ???????????????,??????
  • 1.??????
  • ???????????????,????????????,??????,???????????

37
2.????????
  • ????????????,?????????????,?????????? ?

38
3.????
  • ???????????????,????????,???????

39
  • ?????????????????????????,???????????????,????????
    ?????????????????????????????
  • ?????????????????????,????????????????????,?????,?
    ????????
  • ???????????????,???????????????

40
(?) ????
  • ????????????????????,?????????????????????????????
    ,??????,????????????,
  • ???????????????????????

41
1.????
  • ???????????????????????,???????,??????????????????
    ??????????????
  • ????(?)??????????
  • ?????????
  • ????????
  • ????????????
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