Cálculos circulación forzada

8/16/2019 Cálculos circulación forzada

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TABLA DE DATOS EXPERIMENTALES.

Corriente

(Kg/h)

Diámetro

e! t"n#$e(%m)

Tem&er"t$r"

' (C)

Tiem&o e

o&er"%in *(min)

Di+eren%i"'

e "!t$r" eni,e! -h(%m)

MA So!$%ini!$i" .0 12 3.4

MP So!$%in%on%entr"" 34.0 15 0

E So!,entee,"&or"o 34.0

E EC 3.610 3

M7 7"&or e

"g$" e%"!er"

42.6

M7 M7C 6.4822 40

M96O Ag$" e%onen'"%i

n0

tentr"" t'"!i" 828 15

MR M"'" ere%ir%$!"%in :

tentr"" t'"!i": :

6 31

SEC;ENCIA DE C"!? ="'to má'i%o.

M A= π di

2∆ h ρtA=70 ° C

4θ =

π (0.596m )2 (0.0340m)(977.63 Kgm3 )4 (5min )( 1h60min )

=111.28 Kg

h

M P=π di

2∆ h ρtP=78° C

4θ =

π (0.346m )2 (0.06m)(972.85 Kgm3 )4 (5min)( 1h60min )

=65.86 Kg

h


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E=

π (0.346m )2 (0.0325m )(974.08 Kgm3 )4 (5min)( 1h60min )

=35.71 Kg

h

M v=

π (0.402m )2 (0.0245m )(958.05 Kgm3 )4 (5min )( 1h60min )

=35.75 Kg

h

M H 2 O=

π (0.56m)2 (0.10m )(987.56 Kgm3 )4 (5min)

(

1h

60min

)

=291.88 Kg

h

M AReal= M P+ E=(65.86+35.71 ) Kg

h =101.57

Kg

h

6. B"!"n%e e '!io' en %"" e+e%to.

No 'e &$een %"!%$!"r e>io " #$e no 'e tienen !"' %om&o'i%ione' e!"' %orriente'.

3. B"!"n%e e %"!or en %"" e+e%to. E,"!@e %"!or '$mini'tr"o? %"!or">'or>io %"!or no "&ro,e%h"o.

Q|1|= M P H P+ E H E− M A H A

H A=Cp A ∆ T A=1 Kcal

Kg ° C (70−0) ° C =70

Kcal

Kg

H P=Cp P ∆ T A=1 Kcal

Kg° C (78−0 )° C =78

Kcal

Kg

H E @76 ° C =Tabla=629.74 Kcal

Kg

|¿|=(65.86 Kgh )(78 Kcal Kg )+(35.71 Kgh )(629.74 Kcal Kg )−(111.28 Kgh )(70 Kcal Kg )Q¿


3/6

|¿|=19835.49 Kcal

h

Q ¿

Pa!aQ ":

Q "=

M # $ # @100° C =

(35.75

Kg

h

)(539.02

Kcal

Kg

)=19269.96

Kcal

h

|¿|=19269.96 Kcal

h −19835.49

Kcal

h

Pa!a Q P:Q P=Q"−Q¿

Q P=−565.53 Kcal

h

4. $er" im&$!'or" tot"! " !" tr"n'+eren%i" e %"!or (-T).∆ T =Tvat −t%=(100−76)° C =24° C

. Coe%iente e tr"n'+eren%i" g!o>"! (;).

A=π di &' t =π (0.03m) (2.54m ) (4 )=0.958m2

Q|¿|

A ∆ T =

19835.49 Kcal

h

(0.958m2 )(24° C )=862.71

Kcal

h m2

° C ( =¿

0. "%tor e e%onomF"? %"&"%i" e e,"&or"%in %"&"%i" etr"n'+eren%i" e %"!or en +orm" g!o>"!.

)1=

E

M # =

35.71 Kg

h

35.75 Kg

h

=0.99

C E= E

A=

35.71 Kg

h

0.958m2 =37.27

Kg

h m2


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Q|¿| A =

19835.49 Kcal

h

0.958m2 =20705.10

Kcal

h m2

C TC =¿

1. E%ien%i" =!o>"!.

Q|¿|Q "

*100=19835.49

Kcal

h

19269.96 Kcal

h

*100=102.93

+=¿

5. Cá!%$!o' e !" m"'" e Re%ir%$!"%in.

, T =(76−26 ) -C =50° C

M R= Q"Cp,T

=19269.96

Kcal

h

(1 Kcal Kg °C )(50 °C )=385.40

Kg

h

. Cá!%$!o e !"' ,e!o%i"e'.- 7e!o%i" e Entr""

# E= M R

A .l/01 ρ

A .l/01=4 π

4(di )2=4

π

4(0.03m )2=2.82*10−3 m2

# E=385.40

Kg

h

(2.82*10−3 m2)(997.13 Kg

m

3 )=137.06

m

h =0.0381

m

- 7e!o%i" e S"!i"

# "= M R

A .l/01 ρ


5/6

# "=385.40

Kg

h

(2.82*10−3m2)(993.37 Kg

m3 )=137.57

m

h =0.0382

m

- 7e!o%i" Mei"

# M =# E+# "

2=

0.0381 m

+0.0382

m

2=0.0382

m

=137.52

m

h

82. Tiem&o e re'ien%i" e !" 'o!$%in entro e !o' t$>o' en (min).

θ= &

# M =

2.54m

0.0382 m

=66.49 =1.10min

CONDENSADOR.8. C"!or S$mini'tr"o &or e! e,"&or"or.

Q"= E $v@76 ° C =(65.94 Kgh )(553.73 Kcal Kg )=36512.95 Kcalh

6. C"!or tr"n'mitio &or e! "g$" e %onen'"%in.

|¿|= M H 2O Cp (t al−t ent )=(291.88 Kgh )(1 Kcal Kg° C ) (78−51)° C Q¿

|¿|=7880.76 Kcal

h

Q¿

3. C"!or no "&ro,e%h"o &or e! %onen'"or.

|¿|=(36512.95−7880.76 ) Kcal

h =28632.19

Kcal

h

Q p=Q−Q¿

4. E%ien%i" tGrmi%".


6/6

Q|¿|Q "

*100=7880.76

Kcal

h

36512.95 Kcal

h

*100=21.58

+=¿

. $er" im&$!'or" e tr"n'+eren%i" e %"!or.

∆ T =t a−t ent =(70−51 ) ° C =19° C

0. Coe%iente g!o>"! e tr"n'+eren%i" e %"!or.

A=π di &' t 2=π (0.03m ) (2.54 m ) (8 ) (2 )=3.83m2

Q|¿| A ∆ T

=

7880.76 Kcal

h

(3.83m2) (19° C )=108.29

Kcal

h m2

° C

( =¿

Cálculos circulación forzada

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