ra mi lm cao mi

mi lm mi (duy tr) lm v theo trn v

khng qu an ton lao ( an ton thng 10 0C < Tat

Khi mi xung quanh chy trn v mi .

Trnh trn

mi lm (khng )

mi kh gy nh knh

gi thnh nhin v nhin ha kh than )

Ty theo n m ta phn qu trnh n thnh 3

Classe H - n trnh (insulation for heat conservation)

Classe C - n cch v trnh trn (cold insulation and anti-

sweat protection)

Classe PP - trong an ton lao (personnel

protection)

C dng n-cch vo lm gi thnh m

bao n.

c

ring

Hon ton khng

thi c pH trong 7-8

Khng phn v chy lm

Gi thnh

hnh +52000 C: v (mineral wool fibre) theo ASTM C547 Class I

hnh 201 648 0C : calcium silicate to ASTM C533 Type I

n dng cho cng (Class H, PP)

hnh +52000 C : v theo ASTM C592 Class I

hnh 201 648 0C: calcium silicate to ASTM C533 Type I

dng cch cho v (Class C)

dng tinh (cellular glass) theo tiu ASTM C551

-40 +50C : n v dy n 38 (mm)

-150 -400C: n

bao nhm thp (tn)

: dy bao 0,5 (mm) 0,6 (mm)

: dy bao 0,4 (mm) OD 36 ; 0,5(mm) OD .

5 .3 Ch trong qu trnh hnh n

tra khi hnh n p, tra khuyt ..)

v lm v kh, c khi hnh n

tr bch tr khi n ch khng gian tho bulng

v tr thc n, c hnh cn nghing 450

Khng hnh n che quan st ghi tn

Khng thi cng hnh n trong c

Trong qu trnh n n thi khng khi hnh kim

TH TS

Ta hi

ho

Bi ton 1

Xc dy TS mn trong cc sau:

an ton lao : 10 0C S 520C

Trnh trn : TS > Tdew

Bi ton 2

Xc dy n (top )- ch kinh

F= M2 + M1(top

M2 : chi ph do ra mi

M1 (top) : chi ph cho qu trnh n (gi chi ph thi cng )

i , ho

- i

- o

-

Q=k.dt/dx

- Tch phn trnh thu

- Trao mi

- hai trnh trn thu

-

Trao mi v thnh trong c trao hi

qua thnh v dy n

Trao ngoi n v mi c trao ho

- hi nn coi gn thnh trong mi v qua

pha thnh trong

- Do thnh n nn qua thnh

(1)

(2)

dy n l

trnh ton 1