4

4.1 4.1.1 4.1.2 4.1.3 4.2 4.2.1 4.2.2 4.2.3 4.2.4

4.3 4.3.1 4.3.2 4.3.3 4.4 4.4.1 4.4.2 4.4.3 4.5 4.5.1 4.5.2 4.5.3

4.1 ()

4.1.1 ()() ()() () ()

4.1.1 1.

4.1.1 2. (1)

()

(2)

()

4.1.1 +++()+ 3.

(1)T

1) 2) 3)1/3 4)

0.2mm

(2)

1/4()

(3)

4. ()

(1)()() 61

lOm1m2m

()

(2)

6-2

(3)()

4.1.2

1.

(1) 1.03.513%36%16%45%

(2)

(3)63

4.1.2 2. (GB 502432002)6-16-2

41

81118160%41110

120

200

320

500

800

1250

2000

3000

4000

160

250

400

630

1000

1600

2500

3500

4.1.2 6-2 mm

D

100

80

90

250

240

560

530

1120

1060

120

110

280

260

630

600

1250

1180

140

130

320

300

700

670

1400

1320

160

150

360

340

800

750

1600

1500

180

170

400

380

900

850

1800

1700

200

190

450

420

1000

950

2000

1900

220

210

500

480

4.1.2 1015 6-3 mm

D

b

D(b)(320

05

05

075

320D(b)(450

06

06

075

450D(b)(630

075

06

075

630D(b)(1000

075

075

10

1000D(b)(1250

10

10

10

1250D(b)(2000

12

10

12

2000D(b)(4000

12

4.1.3 () 1.

4.1.3 2.()80%()

1),RRR/b=1.02.0(b)R/b1.02)()()30

90()3)3015

4)ld(ld)

4.2

4.2.1 (1) (2) (3)

4.2.1 (4)() (5)

4.2.1 (GB 50019-2003)9.1.56-46-5

6-4 ( m/s) 810 m/s

dBA

2535

34

2

3550

47

23

5065

69

35

6585

812

58

4.2.1 6-5 1.80% 2.50%

NR

/(m/s)

/(m/s)

45

17.8

25.4

35

12.7

17.8

25

8.6

12.7

45

12.7

22.9

35

8.9

15.2

25

6.1

10.2

45

10.2

19.8

35

7.4

13.2

25

4.8

8.6

4.2.1 (6)10% -15%10%

4.2.2 1) 2) 3) 4) 5)() 6) 7)

4.2.3 1.

(1) (2)

(3)6-4

1-1v12-2v2(v1v2 )pq1=pq2 , pj2pj1,2-21-1(AB)6-4

1-12-2 (6-1)

Z1-2 Pa

1-2

(6-1)

(6-2)

6-3 Kl

(6-2)(6-3) (6-4) Kv1v21-21-2v1v2Kv1v2K,K0.5K 0.5

K,KK0.75(6-3)v1pjpj

2. 1) 2)()

3)()6-4 6-16-2abd vDv4)6-5Rmpm=lRm BZ= p=pm+Z

5)15%15%

()

6)

4.2.3 6-1 K=0.15mm1080m3/h295Pa

1.2.3.6-6 6-1A B C D E F G

4. (1)1-2()6-44m/s1080m3/h

6-1F320250mm

(2)2-34m/s2160m3/hF=0.15m2500320mmv=3.75m/sD=390mm

(3)3-4645.5m/s3240m3/hF=0.163m2500320mmv=5.6m/sD=390mm (4)5-6 34 (5)7-2 1-2 (6)8-3 1-2

4.2.3 5. (1)1-2(9m) 1) 3.75m/s281mm6-5Rm=0.71Pa/m12

6-5

2) 1080m3/h0.88.3.22m/s5m/s3m/s

500250mm

B7=3.5

320250mm500250mm F1/F2=320250/500250=0.64B1130o=0.76(123.75m/s)

90o b/h=250/320=0.78R/b=1B27=0.28 OoB16=0.83 90o b/h=320/250=1.28R/b=1B27=0.3 500320mm250320mmB23=0.1(45 o)

qv2/qv= 1080/2160=0.5F2/F=320250/500320=0.5B34=0.12(3.75m/s)

4.2.3 12

12

(2)23(5m) 1) 3.75m/s390mm65Rm= 0.49Pa/m

2) F1/F=500320/500320=1B35=0.247()

(3)34(8m) 1) 5.6m/s390mm6-5Rm= 1Pa/m

2) 90o b/h=500/320=1.56R/b=1B27=0.31 0oB16=0.83

34 34

(4)45 p4-5=295Pa()

(5)56(6m) 1) v=5.6m/sD=390mm6-5Rm= 1Pa/mpm5-6=61Pa=6Pa 2) 3240m3/h0.8F0/F1 =0.88-12.5m/s

500900mm

B6=0.9

500mm900mm500mm320mmB23=0.1(45o565.6m/s) 90o b/h=500/320= 1.56R/b=1B271=0.31b/h=320/500=0.64R/b=1B272=0.27= 0.58

() f/F0.5B20=0.25(565.6m/s)

56

56

(6)72(3m) 1) 1-2v=3.75m/sD=281mmRm =0.71Pa/m

2) 12 Z1=12.1Pa =0.76(3.75m/s)90o =0.28 =0.83

L2/L=1080/2160=0.5F2/F=320250/500320=0.5B34=0.5(3.75m/s)

7-2

7-2

(7)83(13m) 1) 1-2v=3.75m/sD=281mmRm=0.71Pa/mpm8-3=130.71Pa= 9.23Pa 2) 1-2 Z1=12.1Pa =0.76(3.75m/s) 90o =0.28 =0.83 90o =0.3 Z6=0.21Pa

23Z7=4.65Pa 8-3

8-3

6667

6. (1)1-27-21-2p1-2=38.02Pa72p7-2=34.23Pa 15% 7-2

(2)1-2-38-31-2-3p1-2-3 = 38.02Pa+7.1Pa =45.12Pa83p8-3=44.5Pa

15%

7.123456

15%

3240m3/h10%

4.2.4 1)6-7

6-86-8 a) b)

2)1.52.5

3)

4)2m1m

4.3 1)(6-10)2)(6-11)3)

4.3.1 1. 6-5

pj(Pj )Pa

6-6

PdPa6-9 6-7

2.()

(6-8)

(6-9) 69

3.qV0

(6-10) F m26-9f

(6-11)

f0m2

6-116-10

(6-12)

f0qV0pjqV0iV0600=0.10.5=0.6f0v0=vji0 = qV0 /f0

4.3.2 (qV0)f0pj

1)Ff0 2)f0

610

3)F f0 6-11

90=9060 6-12

4.3.3 1)() 610602)()611

1)2)3)4) 1)8.3.2v0 f0 vjpj

2)vj/vd1.73vd1pq13)1-2p1-22pq24)pq2pd22()5)3)4)

4.3.3 62 8000m3/h6-1381.5m ? (0.6) 6-13 6-2

1)8.3.24.5m/s

2)vj/vd1.73

6-45065db(A)1vd1=4m/s

1

1

3)1-2qV1-2=7000m3/hD1=840mm(D1D2D21-2)6-5Rm1-2=0.17 Pa/m6-8

qV0/qV

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

0.15

0.05

0.02

0.01

0.03

0.07

0.12

0.17

0.23

0.29

0.35

6-81=0.04

1-2

2

4)2 2

2602

34 34143.35Pa

4.3.3 69614614

4.4

4.4 1)2)3)4)

4.4 ()()

4.4.1 ()1000mm1000mm

1.()()

(613)

(614)

mA1A1= 1.89710-3(A1=10-3)A2A2= 3.79510-3(A2=210-3)fn/106kJ W/(mK)h8000h |t| pi/m3

S %i %(6%10%)n 46 510S W/(m2K)S=8.14W/(m2K) S=11.63 W/(m2K)D0 m

20mm25mm30mm40mm50mm60mm

2.()

(6-15)

(6-16a)

mtjtS=tL+(1 3)tLta t ta

(616a) (x2.3) (616b)

(x2.3) (616c)

4.4.1 63 ta=30a=85%tL=26.4187=0.04 W/(mK)S=8.14 W/(m2K) D0=108mm

1)(63)

0.02m20mm2)(64a)

0.03m30 mm

(6-13)-(6-16)6-96-106-11

4-9 (5) ( mm

DN1525

13

DN1525

19

DN1540

DN50

20

25

DN1540

20

DN3280

15

DN3280

22

DN50150

25

DN100

19

DN100

25

DN200

30

DN1550

19

DN1540

25

DN1540

DN50

25

30

DN1540

25

DN6580

22

DN5080

28

DN50150

30

DN100

25

DN100

32

DN200

35

DN1525

25

DN1532

32

DN1540

DN50

30

35

DN1540

30

DN3280

28

DN4080

36

DN50150

35

DN100

32

DN100

40

DN200

40

4-10 ( mm4-11 ( mm

6

9

10

10

9

13

10

15

14

30

40

13

19

20

30

9

13

4

40

50

19

25

30

40

15

21

4.4.2 0.2 W/(mK) 270.042W/(mK)3500.12W/(mK)

4.4.2 (= 6080kg/m3) (= 80350kg/m3)

1. (1) 1)110

2)50%98%

3)

(2) 1)

2) (3)()

1) 2)()()()()1()()

(4)(GB 502221995)(A)(B)(B1) (B2) (B3) (5)

2.() (1)()()()()100150()

() () () (2)

()

(3)

(EPS)

(B2)80

(4)(LDPF)B1

(5)(NR)

(5) B1

(6)

(6) (PVC)B1

(7)

(8)

(9) (10)

3. 1)0.0250.15W/(mK)2)

3) 4)5)6).7)8)9)

6.4.3

1.

()() 20mm

2. 1) + + ()

2) + ()

3) + + () ()

3. + + () ()

6.5

4.5.1 1.

2. ()

(500mm), 615

616

617

6.5.2 ()()

4.5.2 1.5

4.5.2 6-18

2.1)2) 3.1)2)3)4)5)(6-19)

4.5.2 6-19

4.5.3 1. 70 6-20

4.5.2 0o90o 620

2.6-21

4.5.3

60-22

1 2 3

4(GB502432002) 5 6)(GB500192003)9.1.5

7) 8) 9)

10)() 11) 12)

13) 14) 15)