Hayot faoliyati xavfsizligi

HISOB QISM

Navoiy mashinasozlik zavodida tabiiy havo almashtirish qurilmalarini ishlash prinsipini xisoblash.

1. qurilma ko’ndalang kesim yuzi – F

2.qo’shimcha havo almashish kanali – G

3. zaxira koeffitsenti – α

4. changni ajralish meyori -Vt

5. xisobiy harorat – 200 C

6. havo dinamik qayishqoqligi

Mn=1,8*10-3

(I*nas)/c 2

7. havo quvurining uzunligi –L=20i

8. havo quvurdagi tezlik- wa=5i/n

9. siklon gidravlik qarshilik- 0=500ia

10. shamollatish qurilmasi umumiy foydali ish koeffitsenti-η=0,5

11. chang moddasinig demetri- d=100*10-6 i

12. chang moddasining zichligi-

Hisoblash

1. Arximed kretiyasi

Ar= d3ppcd/M2c=(110*10-6)

3*1650*1,28*9,81/(1,18*10-4) 2=2,8/1,4=2

2. Kretiya xisobi

Re=Ar/18+0,61 =2/18+0,61

3. Changlashtirishning xisobiy miqdori

V=Wi*(Fγ+Fa) 0

Wi=1,2Waco

Wi=1,2*4=4,8

W=4,8*2,96*1,16+6,5*10-4

4. Havo quvurining deametri

Da= a= 16,50/0,785*0,21

5. Ventilatsiya qurilmasining gidravlik qarshiligi

ne+ 0+ in

ne=Wa2*Pn*L*a/2=1012,88

0=λ*L* ne/da=0,025*24*1012,88/670=0,9

in=1,65*1012,88*24*1,16=46527,6

P=1012,88+0,9+46527,6=47541,38

6. Ventilator quvvatini hisoblash

Naa=V* /1000*η=136,8

Zavodda shamollatish qurilmasni balandligi 20 metr deametri 10 metr biz havo almashish harakatini ko`rib chiqdik bunda ventelyator quvvati 136,8 yuborladi.